GladbrookTamd GLADBROOK OITY WE L Y/-18257/12/45

Loc. SE-TTw Sec. 9, T85N R1$W El. 95 '̂ T.D. 51' ^^P

0-51 Pleistocene K ^1'

V/ell bottoired in gravel

Jorporallon, Rochester, N. Y. Binder and nolo. In lenci P«lenled. FOIIM 410540

Gto rack. Ci~e*w*5 i<Sfi• $4

Ciiy k/e't a/o. <f-

|/«c. S#/<f '**£; l-VS-fiJ-teV-Spr-,^ Crit, 7*p,&4tfl -9-'<*l>ev<L CG-») isp r*+l or = 754'

trpe Mf// Coj co^-h •

7-.£>. STI ' 0"fy H cl~f)

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H,/\UPH0EAf?HAl?T^t_4D5RooK, XowA^nGINST^^ -town Weh-TuNF l93*7 THoRFEW^llC

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(LOGICAL SUKV2IIowa City, Iowa

l^r

OK0L0GI AHD GA30HD WAT® ILITI

at

GUDBKOOK, TAibi COUNT*

Introduction

Tho town of Gladbrook ie located in the northe atern part of Tana County,

in section* 9 end 10 of Spring Creole Township, (T. 85 «., -„ 16 \..). The

ppfttlatloa according to l';to, etsuma ie 945*

Gladbrook io situated on the gently rolling upland of Iowan drift which

slopes nortbw..rvJ ir. town to tho valley of fiolf Creek, ivin^ alnoet rjj much as

100 feet of relief within tho tovm Units. The area is drained by V'olf Creek

which flowa eastward at the northern edge of town to join the Cads* liiver in

ok Ho?k County.

The t.>. n i: served by the Chicago liorthrestern Railway, Bhfcw^a Groat

Eastern Bailway, :t k« ttgfcny 96, and County roads "P" tnd "Zn.

Prws-^at Sr-ter Supply

A well 323 feet deep was drilled for the town in 19U by l« Am ron'

Sarshalit©*n at the site of the water tor.er. The well reportedly would furnish

i: 3 plloaf t ainute. Ten inch casing extendi, froa the surface to 16a fe«t, and

8-inch casing froa 16j to Ai? feet. The log, acco:-ding to the drillers, is as

follows!

Iisconain >nd Kansan drift 0 to 168 feetKiosisoippien liae, solid 168 to «5 feetMiaaissipr.ian line end shale to ACO feetDevoid*n line 400 to 6o5 feetSilurian line 685 to 89 feet

This well .ro.iuceu fro« the cherty loloadteo of tho Silurian, the sane

horizon »hich supplies none farm wells in tho vicinity.

-2-

Another city we&i Is reported in teen, 269 feet deep, psaduoiiig fro©

t&© Hsjoetsa© of $£&> £f@e Gre©& fomatlca of SmreBisa egs. Ho otao? inforsintlOB

about this «e&l toco obfeiicrjblc frasj tho files of tSio Geological £a7ve§r«

She prosaist cit^r tmtsar BUpj&sf if. obtained Emm tvo gravel paeised wells,

about 50 foot dsop, located is the los-tyis^ wlley of Wolf Crook at the north

edge of ta@a» Oas of t&eee ©ells, drilled by Sfcwp© Sell Co. of Sse loise© in

1937, ia 52 feat deep end is finitahed with e brses sersten 15 inches ia diaiaeter

end 23 feat long* M@ sen furnished 253 gailoaa & E&nufc© tsfcsa drilled.

ftiQ ^reseat sup;^ ie treated for iron reaHHral, aerated ami filtered*

Ths area around Gludbroak is eov«rc& with © thigh osntl© of glaeiol drift

of Xossn and iisns&s& ag@. 3ho Zos&n drift et t&e surftecs, ea soil s© t&© under-

lying Kcinsen drift, ie-coiapoffled a©iEly of yoll«» ^osi blus dey, seasstet Bendy

or srmrelljr in plsese but sppersntly ©ita no g«e& ©ecd «ar ©eavsl beds shieh

ero Bfiter-bearing. a tain li^er of Feovlun losse ©cy eotresr th© Souan drift

iB 3&3G8S*

la tho imiley of lolf Creek, ellart&l eesde and gravel® ©stond to e

3opth of at least S3 feat, sad ar© watar-beayiog*

Imsdi©t©lsr beneath $fr© drift lio tho aidless of th© Seplo $111 foraation

of ©iseissipfsten eg©* fhs drillers log for the deep 01% ©ell shows bedrock

ns 8&&«gj solid Uiseimsij^itn limestone, out from infomation obteiSned frea

other mils drilled is the vioisi%, it aeeos certain tn&t th© first isduratsd

rock ©neaws&ered will' a© t&e Ssple Sill chel©» Xhis far.-satioij consists

estiraly of gr^y, green and bram ssels:*, tfUghtly c&lcsreo&s* Xn© total

thlcteaom of the fora&tiaa at Glsdbrooi; etould ba about 150 feat, but due to

Hie tiiieiasess of taa drift, only about 75 feet should seen?*

-3-

She Xd&e Creek formation of Seva&i&c ag© lies beneath tho Sapl© gill

dude* '£hi;> fosft&t&en consist of three oeisbere, .hieh in doucendias order

sre the Osea, Csrro Gordo, end Juniper Hill*

She Oisea end Cerro Gordo as^bers are foasiHferoue liEietstonss and

de&asiteo with, tain sfel© etrea&a, tsai their eosMned taie&ieaB is ©bout 70

feet* She Junipsr Sill aes&e? io e eelctsreouB green ea&le, end io about 90

feet thicii «t Glt:dbvoaIi.

Hk@ Shell Easok and Cedsp Valley formations of Itevoalun age, lie beneath

the Idta® Creek formation* Qiese two forafitieng ore not separatea to subaur-

feee geology, bot& ceheietiBg of jjal© £prey to huff limestones with a feu thin

<§olemite bade* Site eaafcined tSsiolsiess of those forsL&tione at Gladbreo*; i&

@bm2t 155 feet*

fas ©apsipiaieoa fersstto of Beronien age lies belos the Cedar Velley

end ia ebout 235 feet thick ©t QladhToak. Shi© foraotlon coauioto elcost

entirely of gesy to bra^n doleaites, slightly esndy or sael^ at the bsee,

with bede of gypsum or anhydrite sear the top, base, nad scattered ecceeion&ily

in other parts of the section. & heavy chert sons also occurs about 75 feet

below the top of the forsastioQ,

Boloasitoe of SOwrios eg©, probably belonging to the Bon^Sstan formation,

lie bsseatfis tae S&jfeipinicon fojmtioa end ere ebeut 155 feet thick at GladbreoSu

Sney consist af huff to <$reb dolealtes, porous in part, end very ohertjr. Qhert

is eepeeisily heavy near the top*

fus Mafiuo&eta fosmtion, of Ordovieien age, lies benetitn the Silurian

doleiEeites* The uupsr portion of the* Sfequoketa consists almost entirely of

gr&y sad green shales, aUghtSy calcareous* She lower hundred feet or so,

hoKover, are dolomites, slightly ebaly, with abundant chert* TBbls lower sane

probably eorrel&toe ^i& the Hl^ln seethe? of the liBsguokote fors&tion of the

*4*»

outcrop ereo* IJae total thickness of this forsstieii ie about 25® feet ct

CrJ^dbrook*

3a© Galena f oro&ti&a lies undo? t&© Maquo&ets, end i© about 195 feet thick

at Qlndbrook* It eoneiets aleost entirely of lisssetone tmft dolossite, with a

fes eherty sonse aesr the taiddle and base* She Selene overlies the Secorah

end Plettevill© fam&t&ons, saich neve en eggyeju&t© thic^eae of ebout 80

feet, end ^hicb consist of limestones with ffeveral £re@n s&s&es*

•En© St* Fetor s'omation, e oless, Hfeite eendstose, underlies the PlettevUle

forsfittiow, fhs tMeiattoea of the £&» Pets? eaaistoso at GladbrooSt i© about 35 to

40 feet,

2ne St* f©top fers&tion 1& uuiarltia in sequence dosnasrd by the v;il2or?

Elver fOKSitloti, conal£Btin& of about H5 feet of dolcaite, ettsasBhat eharty end

san^f; the Hoot Valley (Sen Eichnond) ferostien, conBieting of about 90 feet of

doloaitic Basid&ton©5 end the Oaeote forastioa, consisting of about 220 feet of

eherty doXeatts* 132. of these fers&tions ere of Ordovioiea age, belonging to

the Srritirio du Ghi^n group*

Iho Jordan sandstone tsfcleh underlies the Oscoim formation, caneieta of

about 30 feet of sandstone, slightly doio©itio* St in of Casbrien age, end ie

underlain by the dolffisitee end sandy dolea&tsB of th© St. Lanpenae forsatios.

Urn eble£ possible soirees of ipmuad satar at SLetShreofc ©r®, in descending

opder, the alluvial deposits along Wolf Greek, the Owen-Cerro Gordo ambers of

tho Idtse Creek formation, th® top of the Silurian dolosaites, toe Galena lime

stone and doioait©, the St* Peter sandstone, end th© Jordan sandstone, fhese

sources will be treated separately ie the foUoudos discussion*

oliuvici deposits found alon^ telf Creek furnish lorge e&ounts of cotes?,

es sSekjioi by the present city weHo to that ogguifer* 2a© eater is fairly soft

{see englya&e at end of the report), contains so fluoride end i© los in sul

phates but ha© objeotiombl© SEOunte of both iron end SEang&neee which sould

neeeesit&fc© treatment to prevent treu&Ees in the distribution ^nte^ <ant p^evoot

steiaiR;' of clothing and deaestie flsbires* the mfcsg lev@l is near the surface

keeping gsBBping caste at e faintratta* Sack a ensiles conrce, newevtar, ie oe-

eaaiomlly euseeptibl© to bacteriolofioei contoainatioft fros unused cells or

faulty ecnetruction of the well itself catd ©ita aucti en 03eonfiively feign iron

contest it Eiay be neceseery to clean the screen in the sell periodically*

. fa© 0Een end Gerro Gordo l&acstane member© of th© Bavoaien EAse Greek

formation ftp© another g0aaibl© source of water at Gledbrooh* One city well ie

reported to h&v® been drilled to this horlr*<Hu In th© general vicinity of

GledtoaelJ, however, these limestones ere not very productive ©nd even ©ith

&eidis£»g of the formtlon lssald {tsobably not furnish enough setor for the

tarn* 3he t|ueiity of estop should be satisfactory, of moderate nerdsess end

no eseGsii&ve esotait of sny undeeireble constituent* She sates* level should be

vsithia 100 to 150 feet of the surface* TeBipsratww© of the water should be about

52 degrees P* il ^eH to this horisa© ^radS require eaeing froa the surface to

solid Uma&taae of en ap£rosiaat© depth of 23$ feet to prevent the glacial drift

end Sajie 53111 £h&le firea caving*

She Silurien doloaiteB, eBpeei&XJy the upper part, furnieh watsr to a

answer of wllo is the vicinity of GladbrooK, end the deopeet &ity well produces

fros this bor&ssn* "Shin oity eoll ie reported to have ^reduced 1S5 gallons e

ffiinmt®* Kesrhy fexs* sells ©re occasiomUy reported to produce e© saefe ee SO

tjc:ll9B8 e minute siltft v©ry little drewdom* 3he Quality of water ie fairly

goad, in spite of the feet that gjpeua occurs in the overlying SapaipisicoB

formation* Ui® $&pnm probably account© for the higher then everege sulphate

content of the s&ter, end the resulting increase in hardness* Total hsrdaeas,

hovover, :?baalt£ sot exceed 559 parte per oiliiou (about 33 grates per solion).

?he static raster level shauld tes fros ISO to 175 feet beloa the ground surface.

tesper&tnre of tha «?at©r ehoaild be about 56 to 5$ dfigjrcen F* & sell to this

aorisoa ?io»ld require easing to e deptb of ©bout 403 feet to prevent caving of

overlying gi&ei&l drift end ebBles*

$a© l&oeetossa end do&baltee of the Galena forcsatioa noraflHy produce sasil

©EOUfitE of water* She eaounte to be espeeted, however, ore not lerge, although

ooidising of the soaes at tjhiea water ess encountered ©euH psote&ly increase

production ee&eshnt* So inforastion is available on the quaHty of ©atsr frea

these soues, but it should be satisfactory* She static eater level should

preh&biy be @£t&i» 175 feet of ground surface, ffae tesper&turo of the enter

would ssrobmbSy be no greater than 53 to 60 degrees F* A well to thie or

greater depths ghs&ld be cased frost th© surface through the Haipioicsts eheles,

to e depth of Ghent 1100 feet, to prevent caving of the aheloe and else to

shut out the gypsum end store sinerelised tratore of the Wapsiplnicon foraation*

lite St* Peter eead^tone, Is ssay parte of Xftsft, ie « very good aquifer*

In the vicinity of Glcdbraok, hoaever, tho sandstone ie fairly thin and other

ssell© drilled in the area have reported encountering little catar et this depth*

Probr bly no ctro then 75 to 103 gallons &Diuute, at tho noot, coull be expected

frost this forsatioa. !Sh© fsuslity of eater £stm the St* Peter should be eetiefae*

tsry Pii.Hk the peisaifel© eneeption of enpreoioblt? eoousts of iron* The ttstor level

should be sithia 350 feat of the gsound, anil the tesper&turo slightly Sa escesa

of &> degrees F* A ©ell to tbie formation uould require easing to a depth of

11^0 feet (through the Hsgaohote shalee) end possibly e liner through the shales

of the Ueeoreh-Plettevill© formations to prevent their caving*

-#-

ffee Jorden sandstone ie almost univereel^ e good wottap-produeing horisoa*

fit Ql&dbreslc, aspl© eaaustu of E&tss for & tos® eupply could be derived frea

this foreetioa* l&e ^usH^ of Eater fros it should be very satisfactory, elth

a total htm&ieBB of shout 400 pert© per million (S3 to 24 grains per geHoa)

end no obleetiosmbls eenetitaaats is eppreefcbl© cusoonts* <£%e t&tor level

abeaM be within 151) feet of the greunji cad tho toBpffirattarc of the mtep froB

6S to 64 degrees F* A well to the Jordan sandstone seuM respire casing to

110$ feet tbrov^h the HswHAteta shales and possibly a linar through the

Deeereh, PlGtt&viile end St* Peter fercatioas to prevent Gfa&i© caving end to

shut out any mtor frea tho ISt* Peter if it ©eeasd to be of andeetoable quality*

*21 deaths sectioned in &© foregoing paragraphs bev© been bfe&ed en e

©t&rtiitg elev^tSe© the eeao 00 the old deep oitgr sell at the smter toner* & •

sffissBry of forta&t&ojta to be eneountered in drilling ©t this site, Rita their

lit&olflfjie ehur&etor, thicSraeBS end depth r&nge ie given on e following pstgo*

So predict the £am*tlsa@ to be £«un£ is e ©ell drilled at eay other lceetion

to Gladbrooli the form&t would hove to be corrected for the difference in

starting elevetisn*

Sheaics! enslysen of water from city sells into the wolf Greek elluv&al

depeeito end the appaar SUnrtcua dolsaitee sre eeosa on & aeperato ehset*

2he Geological Survey ?.ill be glad to be of nay estfietanee in the drilling

or testing of any sell drilled for* tho tovn of Gladferook. Sua^les should be

esved from each five-foot intorvel of drilling or of each formation if lees

then 5 feet thick. i-'Eaple sad® end log boa&s for thi» jaopeee -ill be gladly

fyraiehed by sa© Survey for this purpose*

-s-

Summary of Geologic FormationsGlhdbrook, Iowa

(for a wall to be drilled at the site of the rreaent water tower in town)

Formation and Character Thloknmaa Denth

PLKI8T0CEHS

Glaei 1 irift (yellow and blue cl y, ithBase stuvi end creval) 170 0 to 170

mibsissippiam axsam

Maple Hill formation (shale) 75 170 to 245

...

Line Creek formation

Owen-Cerro Qftrdo members (linerstone, ahaly)

Juniper Hill aeaber (shale)

Shell Bock-Cedar Valley formiiti ;:t (limoatone)

fapaipinioon fora-'.tio.'. (liaeutone, dolomite,with gypsum and some chert)

samtm BEBHi

Hopkinton (T) formation (dolomito, cherty)

OmTJOVTCIAS SISTSM

laquoketn formation (ahal-j, with chertydolomite near the oaso)

Galena formation (limestone and dolomite)

jJocorah-PlattevIlle formations (limestone,with green shales)

St. Pater formation (sandstone)

lilies River format!M v oloaito, cherty endsandy in part)

Root Valley (Maw Biohmond) formation (sandstone, doloaitic)

Oneota formation (dolomite, cherty)

ClMBBlAh SI&TM

Jordan formation (sandstone, slightly joloaitic)

St. Lawrence formation (dolomite, sanfcr)

7o 2tf 315

A5 315 to 400

135 400 to 535

235 535 to 770

155 770 to 925

250 925 to 1175

195 1175 to |

80 1370 to 1450

35 1450 to 1485

145 1485 to I

90 1630 to 1720

220 1720 to 1940

80 1940 to 2020

_ 2020 to —

-9-

Kiner&i Analyses of feelle at Gladbrook, loam

(all figures in parts j>er million)

Constituent

Total solids

Insoluble matter

Alkalinity (»e0)

Alkalinity (Phn)

Fe203* ^hPl * **2°3Nitrogen as nitrate

. 1 •.. li m solium

Oalcium

Magnesium

Iron (unf!ltared)

manganese

FluorIda

Chloride

Sulphate

Bicarbonate

Calculated hardness (as CcCC-3)

Omlanlntod hardness (groins pargallon as CaCO^)

Gladbrook City BailDepth 828 feet

1205.

1S.0

264.

0.0

2.0

0.00

175.5

1U.5

40.4

0.3

0.1

2.0

27.0

579.6

322*1

527.

9M

Gladbrook City SellDepth 52 feet

720.

124.0

154.

0.0

46.5

0.50

4.4

90.8

28.9

16-1

0.5

0.0

26.0

171-0

187.9

375*

21.9

I01A GEOLOGICAL SURYHIowa City, Iowa

GBOLOilX AMD GBOOHD aATEh ILITI

at

GLADBROQg, TAMA COUNT!

Introduction

loan of Gladbrook is locate.; in the norths-: stem part of Tama County,

in sections 9 and 10 of Spring Creek Township, (T. 85 N., t* 16 V,'.). The

population according to 194 census is 945*

Gladbrook io situated on the gently rolling upland of Iowan drift which

:e northward in town to the valley of Boll" Creak, giving almost as much as

100 feet of relief within the town limits. The area is drained by Wolf Creek

which flows eastward at the northern edge of to?n to join the Ce; far in

Black Bark County.

The town if- served by the Chicago Northwestern Railway, Chicago Great

Western Bailway, Sfc-te highway 96, end County roads "P" md "i.".

: .••.••:• ..u.:: ly

A well 188 feet deep was drilled for the town in 1914 by 1* A. Ford of

Marahallto a t Uie site of tho water tor.er. The well reportedly would furnish

125 gallons t minute. Ten inch casing extends froa the surface to 168 feet, and

8-inch casing from 160 to 412 feet. The log, according to the drillers, is as

follows!

Weconain and Kansan drift 0 to 16S feetaissii-sippien lime, solid 168 to 25>3 feetMiaaissippian lise end shale 258 to 400 feetDevoid;n lima 400 to 685 featSilurian lima 685 to 323 feet

This well produces from the cherty cioloaitQ.-j of the Silurian, the same

horizon which supplies some farm walls in the vicinity.

-2-

Anothex city well is reported in town, 260 feet deep, producing from

the limestone of the Lime Creek formation of iJevonian age. No other information

about this well was obtainable frum the files of the Geological Purvey.

The inaaeat city water supply is obtained from two gravel pecked ftells,

about i>0 feet deep, locate i in tlie low-lying valley of ;olf Creek i»t the north

edge 01" to*n. One of these walla, drilled by Thorpe Yield. Co. of Oes Moines in

1937, is 52 feet deep and is finished with a brass screen 15 Inches la :liameter

and 20 feet long. This well furnished 250 gallons a minute whan drilled.

The present supply is treated for iron romovj1, aerated and filtered.

The arer around Gladbrook is covered with a thick mantle of glacial drift

of Iowan and Ivunsan age. The Iowan drift at the surface, as well as the under

lying Kansen drift, is composed mainly of yellow .nd blue clay, soaewhat sandy

or gravelly in places but apparently with no good sand or gravel beds which

are water-bearln,;. j'< thin layer of Peorian loess nay cover the Iowan drift

in places.

In the valloy of Rolf Cree.:, ;lluviil sands and gravels extend to a

depth of at least 50 feet, and era water—bearing.

Immediately beneath the drift lie the shales of the Maple Hill formation

of Mississippian age. The drillers log for the deep city well shoes bedrock

as being solid Mississippi, a liniestone, but from Information obtained from

other wells drilled in the vicinity, it seems certain that the first indurated

rock encountered will be the Maple Hill shale. This formation consists

entirely of gray, green and brown shales, slightly calcareous. The total

tnicknuBH of the formation at Gladbrook should be about 150 feet, but due to

the thickness of the drift, only about 75 feet should occur.

•»3—

Sue Lime Creek foamtion of 3evanian age lies beneath toe Maple 0111

shale* Shis formation consiete of three seabere, which in descending order

ere the Ocen, Cerra Gordo, and Juniper Sill*

The Onen end Cerro Gordo aeaberB are fogsiUferouo limeotonee end

doloaiteo sith thin shelo etreaks, tmA their combined thickness is about 70

feet* fhe Juniper Hill sesber ie e calcareous green stale, end is about 90

feet thick at Glrubroak.

She Shell Book and Cedar Volley feanzatlone of Devonian cage, lie beneath

the List© Creek formation* Those two formations ere not separated in subsur

face geology, both eoneieting of pclo gray to buff limestones tsith a few thin

dolosdte beds* The combined thickness of these formations at Cledbrook is

ebout 135 feat*

The S&psipiiaicon formation of Bevonian age lies below toe Cedar valley

end ie ebout 235 feet thick at Gledbrook. Shis formation consiete almost

entirely of gray to brorcn doloniteB, slightly sandy or shaly at the base,

with bed© of gypsum or anhydrite near toe top, base, and scattered occasionally

in other parts of toe section. A heavy chert stone also occurs about 75 feet

below toe top of the foro&tion*

Eolflaitee of Silurian ego, probably belonging to the Bopkinton formation,

lie baue&to toe ^apeiplnicon formation end are about 155 feet thick at Gladbrook*

They consist of buff to drab dolomites, porous in part, end very cherty* Chert

is GDpeeielly heavy near toe top*

The @equeketo formation, of Qrdovicinn ego, lies beneath toe Silurian

doloaitea* She upper portion of toe EEeonoketa eonaiote aliooet entirely of

gray and green aheles, slightly calceroous. She lower hundred feet or so,

however, ere doloaites, slightly shaly, with abundant chert* fhie loser acne

probably correlates with toe Elgin aesber of toe Maejuokete fonsaticn of toe

*<4-

otttorap area. 2a© total thickness of this forsntion ia ©bout 230 feet at

Gladbrook*

the (felons, £exmtien lie© under toe Saonokets, and ie about 195 feet thick

at Gladbrook* It consists elaoDt entirely of lioaatone end doloaite, with a

few cherty zones near toe taiddle end base* She Galons ovorliee toe Becorah

end HatteviHe farmatione, ehich neve an aggregate thickness of ©boat 80

feet, and chich eonoiat of lineotonoa with severe! green shales.

The St* Peter foxa&tion, a elesn, ghite sandstone, underlies toe Plattovills

foraatioR. fha thickness of toe £t* Fetor sandstone at Gladbrook ia about 35 to

40 feet*

The St* Peter fam&tlea is underlain in eeojusnee dosveard by the MUoa

Biver foroation, consisting of about 145 feet of dolomite, soae&hat cherty and

sandy; toe Eoot velley (Hew Bichmond) fomation, consisting of about 90 feet of

doloMtie sand0tone$ and the Oneato formation, consisting of about 220 feet of

cherty doloiaite* £31 of these formations are of Grdovician age, belonging to

toe Prairie du (Men group*

Tho Jordan sandstone tfhlch underlies toe Onoota formation, consists of

ebout 30 feet of s&Bdetoao, slightly doloaitio. It is of Caiabrlen age, and is

underlain by toe dolcsites and sandy dolositeB of toe St* Laurence formation*

Poagifelo Graunu-gfvtar aainraea

The chief pessfbls sources of ground voter at Gladbrook are, in descending

orders toe alluvial deposits along Wolf Greek, the Gereu-Carro Gordo maabere of

toe Line Greek foraation, toe top of toe Silurian delfiaitee, toe Galena lime

stone and dolomite, the St* Peter sandstone, and toe Jordan sandstone* These

sources Bill be treated separately in toe follewliig discussion*

•fee nHuvicl deposits found along V.olf Greek furnish large aaosnts of water,

as @bos?n by toe present city trolls to that aquifer* 'She Bator is fairly eeft

(see analysis at end of toe report), contains no fluoride end is lot? in sul

phates but has objectionable amounts of both iron and sanganase which sould

necessitate trestssot to prevent trembles in the distribution syates and prevent

staining of clothing and domasti© fixtures Tho water level is near the surface

keeping pumping costs at e mtnfaffli* Such a. ahallo© soaroe, however, is oc

casionally susceptible to bacteriological contasinatioa from unused veils or

faulty construction of the well itself and t?ito suck en excessively high iron

content it say be necessary to clean the screen in toe ©ell periodically*

The Oven end Cerro Gordo lisoetose meabers of toe Devonian Lime Greek

formation ere another possible source of water at Gladbrook* One cito well is

reported to have been drilled to this horlson* In toe general vicinity of

Gledbrook, however, these liBeatonee are not very productive and even tilth

acidising of the formation could probably not furnish enough eater for toe

tocn* ike quality of water should be satisfactory, of aederato hardness end

no exeoesive amount of any undesirable eonstitoent* a© Eater level should oe

vsithin 100 to 150 feet of toe surface* Temperature of toe water should to about

52 degrees f# & isell to tola horisan would require casing from the surface to

solid limestone of an approsdaate depth of 235 feet to prevent toe glaelnl drift

end slaple Sill shale from caving*

The Silurian delositeB, especially toe upper part, furnish sator to a

nuaber of wells in toe vieinity of Gl&dbrook, and toe deepest city well produces

froa this horisoa* Tkie city weH is reported to have produced 125 gallons a

ts&nute* Baarby faona sella ere occasionally reported to produce as such as 20

gellons a nisiute with vary little drawdown. The quality of mter is fairly

good, in spite of toe feet tost gypsum occurs in toe overlying

formation* ike gypausi probably accounts for too higher than average sulphate

content of toe Qatar, and toe resulting increase in hardness* Total hardness,

however, should not exceed 550 parts per oiilion (about 32 grains per gallon)*

The st&tic eater level should be froa 150 to 175 feet below toe ground surface*

Ieaparcture of toe mter should be about 56 to 53 degrees F* &eell to this

horlson mvld require casing to a depth of about 400 feet to prevent caving of

overlying glacial drift end shales*

The limestones and doloaitcs of toe Galena formation normally produce small

amounts of tsatar* The aaounts to be expected, hosever, are not large, although

acidising of toe sones at ^hich cater cas encountored would probably increase

production soms&hRt* Bo inforuation is available on toe quality of cater from

these sones, but it should be satisfactory* She static enter level should

probably be within 175 feet of ground surface* The temperature of the \sater

could probably be no greater than 53 to 60 degress F» A troll to tola or

praetor deptos should be cased from toe surface through toe Mequoketo shales,

to a depth of about 1100 feet, to prevent caving of toe shales and also to

shut out toe gypsura and more oineraliaed waters of toe Qapslpinieon foraation*

fhe St* Peter1 sandstone, in oany parts of loisa, is a vary good aquifer.

In toe vioiaity of Gladbrook, however, toe sandstone is fairly thin and otoer

sells drilled in toe area have reported encountering little setar at this depth*

Frob&hly no more than 75 to 100 gallons a minute, at too most, could be expected

frost this formation. The enaUty of tsetear froa toe St. Peter should be satisfac

tory tvith toe possible exception of appreciable s&ounts of iron* Th© trater level

should be oitoin 150 feet of the ground, and toe temperature slightly in excess

of 60 degress F» &sell to tola foraation tsould require casing to a depth of

1100 feet (through toe Hequoheta shales) and possibly a Una? torou&h toe shales

of toe Bacorah-Plflttevillo formations to prevent their covins*

«-7—

The Jordan sandstone is alsost univereelly a good mtea>$»roducing horison*

At Gladbreok, asple oiMuntji of tsater for a town supply could be derived from

toia famftticn* fhe quali^ of mtor £ram it should be vsstf satisfactory, v?ith

a total hardness of about 400 parts par million (23 to 24 grains per gallon)

and no objectionable constitnaats in apgreeSabl© amounts* She water level

should bs sltois 150 feet of toe ground end toe teapar^twe of toe setter from

62 to 64 degrees F. A well to toe Jordan sandstone would require casing to

1100 feet through toe SJaonoketa shales and possibly a liner through toe

Decorah, Pletteville and St* Fetor foroatioas to prevent shale caving end to

shut out &ny water from toe St* Peter if It seemed to be of undesirable Quality*

Ml depths tasntioned in toe foregoing paragraphs have been based on a

storting elevation toe easts as toe old deep city well at toe vsater toner* a

sume^y of forsat&oss to be encountered is drilling at this site, talto their

lithologie charaetey, toiokness end depth range is given 09 a following page.

To predict the fonnstlens to be found in a sell drilled at any other location

is Gladbrook toe forecast would have to be corrected for toe difference is

storting elevation*

Gbeolcnl analyses of rater from city sells into toe Keif Greek alluvial

deposits and toe upper Silurian dolomites are shown on a separate sheet.

fee Geological Survey will be glad to be of any assistance in toe drilling

or testing of tss& ©ell drilled for toe toss of Gladbrook. Sastples should be

saved from each five-foot interval of driHiag or of each formation if less

than 5 feet thick. Staple sacks and log books for this purpose .ill be gladly

furnished by toe Survey for thie purpose*

of Geolojic FormationsGladbrook, Iowa

(for a well to be drilled at the site of the -resent water toner in town)

Formation and Character 'fkicknepa Depth

PLEISTOCEKS

Glacial drift (yellow and blue clay, .itbsome sand and gravel)

•IHttWiPfia 1ISTBM

Maple Mill formation (shale)

Liae Creek formation

Owen-Cerro dordo members (limestone, shaly)

Juniper Hill member (shale)

Shell Back-Cedar Valley format! ns (limestone)

•apsipLnicon ftNftttn (limestone, doloaite,with gypsum and some chert)

SILURIAH SXSTBf

Hopkinton (T) formation (dolomite, cherty)

OBDOVICIAs SYSTEM

Xaquoketa formation (shale, witn chertydolomite near the base)

lena formation (limestone and dolomite)

h-i rille form (limestone,with green shrles)

St. Peter formation (sandstone)

.•/or formation (dolomite, cherty andsandy in part)

Hoot Valley (Mew Richmond) formation (sandstone, doloaitic)

Oneota formation (dolomite, cherty)

CAMBIIAft EXSTfll

Jordan formation (saudstone, slightly uolomitic)

St. Lawrence formation (dolomite, sandy)

170 0 to 170

75 170 to 245

70 245 to 315

85 315 to 408

135 400 to 535

235 535 to 770

155 770 to 925

250 925 to 1175

195 1175 to 1370

80 1370 to 145C

35 1450 to 1485

145 1485 to 1630

90 1630 to 1720

220 1720 to 1940

80 1940 to 2020

2020 to —

-9-

Minsral Analyses of hells at Gladbrook, Iowa

(all figures in parts i>er million)

Constituent

Gladbrook City "fiellDepth 823 feet

Gladbrook City fcellDepth 5? feet

Total solids 1205. 720.

Insoluble matter 18.0 124.0

Alkalinity ('ieO) 264. 154.

Unity (Phn) 0.0 0.0

Fe203+ AljOj •»• MngO^ 2.0 46.5

Nitrogen as nitrate 0.00 0.50

Alkali an sodium 175.5 4.4

Calcium 144.5 90.8

Magnesium 40.4 28.9

Iron (unfLltered) 0.3 16.0

Manganese 0.1 0.5

Fluoride 2.0 0.0

Chloride 27.0 26.0

Sulphate 579.6 171.0

Bicarbonate 3?-".l 137.9

Calculated hardness (as CaCO-j) 527. 375.

Calculated hardness (grains pergallon as CF.CO3) 90*8 21.9

\ '1

§•

$^

January £4, 1938

Mr* George Koster, MayorGladbrook, Iowa

Dear Sirs

Thank you very much for th© Information which you furnished us on the Gladbrookcity well, As you suggest, I will get theremaining data froa the Thorpe V/ell Company.

Very truly yours,

H« G. flershey

HGHtA

CTOIDN OF QLADBROOKINCORPORATED

O-IMTX^fl U qLADBROOK. IOIDA /Z - Ja- J/.

GEOLOGICAL BOARD

NELSON G. KRASCHEL

GOVERNOR OF IOWA

EUGENE A. GILMORE STATE or |OWAPRESIDENT STATE UNIVERSITY OF IOWA

'OWA GEOLOGICAL SURVEY103 geology duild1ng

phi:sii)[:nt iowa otati: collfgf.

IOWA CITYARTHUR C. TROWBRIDGE

PRESENT IOWA ACADEMY or BCIBNCH ARTHUR C. TROWBRIDGECHARLES W. STORMS DIRECTOR AND STATE GEOLOGIST

AUDITOR Of STATF

December 28, 1937

The MayorGladbrook, Iowa

Dear Sir:

Information has reached up that the town of3-ladbrook recently completed drilling a new wpterveil. The Iowa Geological Survey has been attempting for the past several years to obtain recordsof all wells drilled In the state. Our successIn doing so depends on the cooperation of city of-flcials^ and your assistance in this case will begreatly appreciated.

We would like to know the depth, location,and elevation of the well; the depth at whichwater was found and where It stands In the well;and the kinds and thicknesses of formations-oassed through. Regarding the formations, we areparticularly anxious to learn If bedrock was encountered. If the first solid formation was ashale or limestone or sandstone, we would like todetermine at what depth it was first found. It'•ill also be valuable for us to know the size andlength of casing and where it is placed in the well.

Thanking you for your assistance and cooperation in this work, I remain,

Very truly yours,

c

H. G. Hershey

HGH:A

December 28, 193?

The MayorGladbrook, Iowa

Dear Sirs

Information hae reached us that the town ofGladbrook reoently completed drilling a new waterwell. The Zowa Geological Survey.hae been attempting for the past several years to obtain recordsof all wells drilled in the state. Our suooessin doing so depends on the oooperatlon of city officials, and your assistance in this case will begreatly appreciated.

We would like to know the depth, looation,and elevation of the well* the denth at whichwater was found and where it stands in the well;and the kinds and thicknesses of formationspassed through. Regarding the formations, we areparticularly anxious to learn if bedrook was encountered. If the first solid formation was ashale or limestone or sandstone, we would like todetermine at what depth it was first found. Itwill also be valuable for us to know the else andlength of casing and where it Ste plaoed in the well.

Thanking you for your assistance and oooperatlon in this work, I remain,

Very truly yours,

H. 0. Hershey

ROB8A

<S>/adJ>r#ok.

IOWA GEOLOGICAL SURVEY

Water Well Data Sheet £22 »-1888«~

Town Cz>/adJ>r<?Q £ County ~7~£Ztr76l_ T. $5" N.,R./TW.

Name &/a rfJ?re>Ok. C/fa (Me// Location .££* 1: Afl/|>Seo. 9

Contractor T/igy-pe jAfetfC*. $$*%!*& Driller £,£. lA/glfcer~ Use £>/y Sq^ftyDrilling

Construction (xr<i/£J f^tc/i^ Drilling Dates Jans**y-Ala*dJ'iW Depth_Curb

Topog- C4//e>/ g£ H/ol-f- CreeJc Elev. i/< ^/ Ref.Final

Static / below Pumping 2.1' Draw // ' Z^° TimeLevel /£> curb Level S3' down /7 ' gpm 40° pumpedDepth to Calc. g/ft. Prin.bot.pump ft. with ft. suction pipe, drawdown Prod.Producinghorizons

Total

Depth 52

Date

Water levels and pumping tests on various horizons during drilling •

DepthRange

Stat.

Level

PumpLevel

Draw

dovmgpm. Temp. Producing

horizons

Producingformations

Formations

cased out

Additional information Cg<,iyjc\ ; S4 curjffy,g jet art 49•'

IHC,

/(t> f,pt. -fvm o-4-t *"•& Jo o-F /6> sere**, fyo** 4-1-SI f**

0Qulcler?> j*. lp,H-^ *p-»r€//

Samplerange

Yes

Lo%2 Cond._

Remarks

MicroscopicStudy RangeInsoilRes.

Study Range

Laboratory DataNumber Number

samples Duplicates Cond.

Boxed

Strip_Log"stripLog

Range

Gen.

_L°g_Gen.

Log

Blue

Print_Insol.Res.

Preparod

Date -7/.

SamplesWashed

Well

Corel.

IOWA GEOLOGICAL SURVEX

Iowa City, Iowa ''<•-, ,ji/3I

GEOLOGY AND GRODHD WATER POSSIBILITY

at

GLADBROOK, TAUA COUNT!

Introduction

The town of Gladbrook ic located in the northeastern part of Tama County,

in sections 9 and 10 of Spring Creek Township, (T. 85 N., R. 16 K.). The

population according to 194.: census is 945.

Gladbrook in situated on the gently rolling upland of Iowan drift which

slopes northward in town to tho valley of wolf Creek, giving almost as much as

100 feet of relief within the town limits. The area is drained by iiolf Creek

which flows eastward at the northern edge of town to join the Cedar River in

Blfcck Hawk County.

The town is served by the Chicago Northwestern Railway, Chicago Greet

Besterfl Railway, St; to highway 96, and County roads "P* and "2".

Present Water Supply

A well 823 feet deep was drilled for the town in 1914 by E. A. Ford of

Marshall-town at the site of the water tov.or. The well reportedly would furnish

125 gallons a ainute. Ten inch casing extends fi*osi the surface to 168 feet, and

8-inch casing froa 16.1 to 412 feet. The log, according to the drillers, is as

followsJ

Wisconsin and Kansan drift 0 to 168 feetMississippian lime, solid 168 to 258 feetUiBSissippian lime and shale I to 400 feetDevonian lime 400 to 685 feetSilurian lime 685 to 823 feet

This well produces from the cherty dolomites of the Silurian, the aame

horizon which supplies some fErm wells in the vicinity.

-8-

Another ciiy .well is reported in town, 260 feet deep, producing from

the limestone of the Idas Croak formation of Devonian age. Bo other information

about this wail was obtainable front the files of the Geological Survey.

Tho present eity water supply la obtained from two gravel packed wells,

about 50 feat deep, located ia the la&-lying valley of Self Creek at the north

edge of tosn. One of those wells, drilled by Shorpe Well Co* of Sea lolneB ia

1937> la 52 feat deep and ie finiahed with a brass, screen 15. inches ia diameter

and 20 feet long. This sell furnished 250 gallons a oinute vhen drilled.

The present supply is treated for iron removal, aerated and filtered*

She area around Gladbrook is covered with a thick oontle of glacial drift

of Iowan and Kansan age. The Xoean drift at the surface, as sen as the under

lying Kansan drift, Is composed oainly of yellow and blue day, somewhet sandy

or gravelly in places hut apparently with no good sand or gravel beds ehich

are raatar-boaring. A thin layer of Peoriaa loess may cover the Iowan drift

in places.

In the valley of ffrlf Creek, alluvial sands and gravels ©stand to a

depth of at least 50 feet, and are «atar-bearing.

Immediately beneath the drift lie the shales of the Haple "«T» formation

of LJiosiasippian age* Tho drillers log for the deep city v/ell shoes bedrock

as being solid Illssissippi&n lioestone, but from information obtained froa

other wells drilled in the vicinity, it seems certain that the first indurated

rook encountered will be the Saple Mill shale* This formation consists

entirely of gray, green and broua shales, slightly calcareous. She total

thickness of the formation at Gladbrook should be about 150 feet, but due to

the thickness of the drift, only about 75 feet should occur*

-3-

She Lima Creek formation of Devonian age lies beneath the Maple USUI

Shale* Shis formation consists of three members, whieb in descending order

are the Ouen, Cerro Gordo, and Juniper urn-

The ©sen and Cerro Gordo members are fossiliferous limestones and

dolomites sith this shale streaks, and their combined thickness ie about 70

feet* She Juniper Hill member ie a calcareous green shale, and is about 90

feet thick at Gladbrook.

She Shell Hook and Cedar Valley formations of Devonian age, lie beneath

the Lime Creek formation* These tso formations are not separated in subsur

face geology, bote consisting of pale gray to buff limestones with a few thin

dolomite beds* The combined thickness of these formations at Gladbrook ia

about 135 feet*

She Wapsipialeon formation of Devonian age lies below the Cedar Valley

and is about 235 feet thick at Gladbrook* Shis formation consists almost

entirely of gray to bromi dolomites, slightly sandy or shaly at the base,

tilth beds of gypsum or anhydrite near the top* base, and scattered occasionally

in other parts of the section* A heavy chert acne also occurs about 75 feet

below tho top of the formation.

Dolomites of Silurian age, probably belonging to the Hopkinton formation,

lie beneath the Wopsipinicon foroation and are about 155 feet thick at Gladbrook*

They consist of buff to drab dolomites, porous in part, and very cherty. Chert

ie especially heavy near the top*

She Haquoketa formation, of Ordovician age, lies beneath the Silurian

dolomites. She upper portion of the Maquoketa consists almost entirely of

gray and green shales, slightly calcareous. The lower hundred feet or ao,

however, are dolomites, slightly shaly, with abundant chert. Shis lower aone

probably correlates with the Elgin member of the Maquoketa formation of the

•4&W

outcrop area* She total thickness of this formation is about 250 feet at

Gladbrook*

The Galena fonaation lies under the ESagueketa, and is about 195 feet thick

at Gladbrook. It consists almost entirely of limestone and dolomite, with a

few cherty acnes near the middle and base* The Galena overlies the Seeorah

and Platteville formations, obleh have an aggregate thickness cf about 80

feet, and which consist of limestones with several green shalee*

She St* Peter formation, a clean, unite sandstone, underlies the Platteville

formation* She thickness of the St* Peter sandstone at Gladbrook is about 35 to

40 feet*

The St* Peter formation is umlorlf-.ln ia sequence doansard by th© billow

fiiver formation, eoasisting of about 145 feet of dolomite, somewhat cherty and

sandy5 the Boot Valley (Sent Richmond) formation, consistins of about 90 feet of

dolooitic sandstone; end the Oneota formation, consisting of about 220 feet of

cherty d&ealte* £31 of these formations are of Ordovician age, belonging to

the Prairie du Galen group*

She Jordan sandstone which underlies toe Oneota formation, consists of

about 30 feet of sandstone, slightly dolooltie. It is of Cambrian age, and is

underlain Iff the dolomites and sandy dolomites of the St. Laurence formation.

Possible Ground-gatar. Sources

She chief possible sources of ground water at Gladbrook are, ia descending

order, the alluvial deposits along Wolf Creak, the Owen-Carro Gordo members of

the Lime Greek formation, the top of the PHl"rtnn dolomites, the Galena lime

stone and dolomite, the St* Peter sandstone, and the Jordan sandstone* Shese

sources will be treated separately in th© following discussion*

She alluvial deposits found along Wolf Creek furnish large amounts of water,

as shorn by the present city walls to that aquifer. She water is fairly soft

(see analysis at end of tho report), contains no fluoride end is Ion in sul

phates hot has objectionable amounts of bath iron and manganese which would

necessitate treatment to prevent troubles la the distribution system and prevent

staining of clothing and domestic fixtures* She water level is near the surface

keeping pumping costs at a minimum. Such a shallots source, however, is oc

casionally susceptible to bacteriological contamination from unused trails or

faulty construction of the well itself end with such en excessively high iron

content it stay be necessary to clean the screen ia the sell periodically*

She Owea and Cerro Gordo limestone members of the Devonian Lime Creek

formation are another possible source of water atGladbrook* One city well ie

reported to have been drilled to this horison* In the general vicinity of

Gladbrook, however, these limestones are not vary productive and even with

acidising of the formation would probably act furnish enough water for the

town* The quality of water should be satisfactory, of moderate hardness and

ao excessive amount of any undesirable constituent* The water level should be

within 100 to 150 feet of the surface* Temperature of the water should be about

52 degrees F« A well to this horisen would require casing from the surface to

solid limestone of aa approximate depth of 235 feet to prevent the glacial drift

and Sepia alill shale from caving.

She fiUnrinn dolomites, especially the upper part, furnish water to a

number of wells ia the vicinity of Gladbrook, and the deepest city well produces

from this horizon* Shis city well is reported to have produced 125 gallons a

minute. Heerby farm walls are occasionally reported to produce as much as 20

gallons a minute with very little drawdown* She quality of water is fairly

good, in aplte of toe fact that gypsum occurs ia toe overlying Wapgipinlcoa

formation* She gypsum probably accounts for the higher than average sulphate

content of the water, and toe resulting increase in hardness* Total hardness,

however, should not exceed 550 parts per million (about 32 grains per gallon)*

The static water level should be from 150 to 175 feet below toe ground surface*

Temperature of toe water should be about 56 to 53 degrees P. A well to this

horiaon would require casing to a depth of about 400 feet to prevent caving of

overlying glacial drift and shales*

She limestones and dolomites of the Galena formation normally produce small

amounts of water* The amounts to be eapeotod, however, are not large, although

acidising of toe cones at which water was encountered would probably increase

production somewhat* So information is available on toe quality of water froa

these cones, but It should be satisfactory* The static water level should

probably be within 175 feet of ground surface* The temperature of toe water

would probably be ao greater than 58 to 60 degrees F« A wall to this or

greater depths should be cased from toe surface through the Stequoketa shales,

to a depth of about U00 feet, to prevent caving of the shales and also to

shut out the gypsum and more mineralized waters of toe Kapsipinicon formation*

The St* Peter sandstone, in many parts of Iowa, is a very good aquifer*

Xn toe vicinity of Gladbrook, however, toe sandstone is fairly thin and other

wells drilled in toe area have reported encountering little water at this depth*

Probably no more toaa 75 to 100 gallons a minute, at toe most, could be espeeted

from tola formstioa. She quality of water from the St* Peter should be satisfac

tory with toe possible exception of appreciable amounts of iron* She water level

should be within 150 feet of the ground, and toe temperature slightly ia excess

of 60 degrees F. Awell to tola formation would require casing to adepth of

33m feet (through the Haquokete shales) sad possibly aliner through the shales

of the Dacorah-Plnttoville formations to prevent their caving*

-7-

She Jordan sandstone is almost universally a good water-producing horlson*

At Gladbrookj, ample amounts of water for a towa supply could be derived from

this formation* The quality of water from It should be very satisfactory, with

a total hardness of about 400 parts par million (23 to 24 grains per gclloa)

and no objectionable constituents ia appreciable amounts* She water level

should be within 150 feet of toe ground end the temperature of toe water from

62 to64 degrees F* &well to the Jordan sandstone would require casing to

UOQ feet through the Haquoketa shales and possibly a liner through toe

Decoreh, Platteville and St* Peter formations to prevent shale caving and to

shut cut any water from toe St* Peter if it seemed to bo of undesirable quality.

All depths mentioned in toe foregoing paragraphs have been based on a

starting elevation toe same as the old deep city well at the water tower* A

ouEE&ary of formations to be encountered in drilling at this site, wito their

litoologlc character, thickness end depth range is given on a following page*

So predict toe formations to be found ia a well drilled at any other location

in Gladbrook toe forecast would have to be corrected for toe difference ia

starting elevation*

Chemical analyses of water froa city wells into toe Wolf Creek alluvial

deposits sad toe upper Silurian dolomites are shown on-a separate sheet*

The G&elogieal Survey will be glad to be of any assistance in toe drilling

or testing of any well drilled for the towa of Gladbrook* Samples should be

saved from each five-foot interval of drilling or of each formation If less

than 5 feet thick. Sample seeks and log books for this purpose will be gladly

furnished by the Survey for this purpose*

—Q«a

- Summary of Geologic FormationsGladbrook, Iowa

(for a well to be drilled at toe site of the present water tower in town)

Formation and Character Thtoknnflft £gB&

PLEISTOCENE

Glacial drift (yellow and bine day, withsome saad and gravel) 170 0 to 170

MXSSXSSXPPXaH SXSSM

Maple Mill formation (shale) 75 170 to 245

DEVQHIAw 6XSSM

Lime Creek formation

Owea-Cerro Gordo members (limestone, shaly)

Juniper Bill member (shale)

Shell Beck-Cedar Valley formations (limestone)

Kapaipiaicon formation (limestone, dolomite,wito gypsum and some Chert)

GBNSm SXSTB1

Hopkinton (V) formation (dolomite, cherty)

oRnoviciAH &mm

aaquoketa formation (shale, with chertydolomite near the base)

Galena formation (limestone and dolomite)

Daoorah-Platteville formations (limestone,wito green shales)

St. Peter formation (sandstone)

gfillow ffiver formation (dolomite, cherty sadsandy in part)

Boot Valley (Sew Bichmond) formation (sandstone, dolomltie)

Oneota formation (dolomite, cherty)

CAMBRIAN SZSTBf

Jordan formation (sandstone* slightly dolomltie)

St* Lawrence formation (dolomite, sandy)

70 245 to 315

B5 315 to 400

135 400 to 535

235 535 to 770

155 770 to 925

250 925 to 1175

195 1175 to 1370

80 1370 to 1450

35 1450 to 1485

145 1485 to 1630

90 1630 to 1720

220 1720 to 1940

80 1940 to 2020

«• 2020 to —

-9-

Mineral Analyses of Wells at Gladbrook, Iowa

(all figures in parts i»er million)

ConstituentGladbrook City Well

Depth 828 feet

Total solids 1205.

Insoluble matter 18.0

Alkalinity (MeO) 264.

Alkalinity (Phn) 0.0

Fe2°3+ ^Vb * Mb203 2.0

Nitrogen as nitrate 0.00

Alkali as sodium 175.5

Calcium 144.5

Magnesium 40.4

Iron (unfiltered) 0.3

Manganese 0.1

Fluoride 2.0

Chloride 27.0

Sulphate 579.6

Bicarbonate 322.1

Calculated hardness (as CaCOo) 527.

Calculated hardness (grains pergallon as C6CO3) 30.8

Gladbrook City WellDepth 52 feet

720.

124.0

154.

0.0

46.5

0.50

4.4

90.8

28.9

16.0

0.5

0.0

26.0

171.0

187.9

375.

21.9

Sheet No I.. Name of Well Survey No.. M

Location Date Drilled Analyst.00

10-

20-

30

40

50

60

70

80

90

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12

34

96

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91

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31

41

51

61

71

81

9

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UNITED STATES DEPARTMENT OF THE INTERIOR

Geological SurveyWater Resources Division

Water Quality(ppm)

Card Q

W-183*3

0?S /aid O^&DQlC\DBR00K T0U»> tUELJ-

State: X0 lUft I il I County:TrW)1 2

31k. Town: GlADS/WK

Well No.

SamplingDepth

SiO=

Latitude TjQBMhb ll !l U !q l»> I Oil ia5 ' 11 IS

V 3—1—

<3 JO~7&

aType I I Kxl0e30 31 35

Seq.r-nNo. LLJ Date

19

4015

20

pH I7J7 1 ITemp. °F36 38

JL

iiil

395 L

26 29

1l C

42 44II iteWi4T "—49

Mg J *L50 53Na 3/1 Ik

58 ^54

^T4|6>

25

41

Source No.

HC03 3 I 2 C03 S04 tl CI 6_i78 79 8062 65 66 67

Duplicate Columns 1-25 from Card Q

N03

68 72 73

Card R

o{s26 28

Cu

•3111 po432

n B M33 35 36 38 39

Zn

JPe41 42

5>045

Mn °1L.046 49

HtbLSolids 52 53 54

Determined I5l9l6 Calc.

58 63 64

Color No. R78 79 80

Card S

Duplicate Columns 1-25 from Card Q

IBr

RSC

29 31

ABS45

Beta

(pc/D

T

Alk. as

CaC0332

47

I

55 57

Ca,Mg69

2 5 (035

50

70

Free

C02

HardnessNon^

Carb.73 74

4 5 4

S36 38

1

/ 1 ?77

39 41

Alpha

(pc/D

1•

26 28

42 44

55 57 58 60

48

Ra

(pc/D61 63

U

(ug/D64 66

Recorded by; nWfiQU)Ar\)

No.

80

Punched by; {Y)ttC &QU)Al\) Date: 6-J?-VJ-

Published:

UNITED STATES DEPARTMENT OF THE INTERIOR

Geological SurveyWater Resources Division

Water Quality - PflffTTrti(ppm)

Card Q

£i.flO£&J(J|< T-0UJ/V UJEI.L

State: 30 UM . \ j? I County: Ttimn 316 I Tovn: glflOgMflK4

M D Y

11 1 Date 7£ *\i 5\3.19 20 25

11 Temp.°F

36 38 39 41

Na1• K

11.

54 58 S9 61

Well No. paititude

LlL 3 \o IM I [oTsUHiiTl 1.T

fronRi,tutfl.ea!0~18"

Seq.No.

SamplingDepth

56"yType

—r—"

42 44

Ca

1i

"4T

C03

KxlOe31

i.49

S04

Mg

35PH

1

50 53Source No.

t CI 1

Si02

HC0362 65 66 67 68 72 73 78 79 80

Card R

Duplicate Columns 1-25 from Card Q

Mn

Determined

Color

l• N03 i 1 foJ 1

—1—

L B1

• ML

11

. ..• „,.. Fe

—1

£26 28 23 32 33 35 36 38 39 41 42 45

Oltp 0 Cu 1 .. Li II 7,n

11

•

46 49 SoSids 52 53 54 55 57 Hardness

1 1 1 II 1Gale. 1 1 1 1 1 Ca,Mg 5 0 0«on-

Carb.

58 63 64 69 70 73 74 77

78 79

0. L8J80

Card S

Duplicate Columns 1-25 from Card Q

IBr

RSC

Alpha(pc/D

•

26 28

42 44

55 57

29 31

ABS45

Beta

(pc/D

T

Alk. as

CaC03

47

Ra

58 60

Recorded by: fllACGOuJfiti

32 35

1 L_

48 50

1)1

61 63

Free

C02

U

(WD

S

36 38

•

64 66

1I

39 41

No. LJ80

Punched by: D)i4C tgdloFuV Date:6 O^-'O

Published;

UNITED STATES DEPARTMENT OF THE INTERIOR

Geological SurveyWater Resources Division

Water Quality(ppm)

OSS ii*U 01 BO

State: -T^UJfl i^4

Card Q

County: TfiPlft Si6" 3 4

Seq.r-|No. LLJ Date

19

Tovn: &LAbBK66'i<

Well No.

SamplingDepth

Si02

HC03

ititude

3 jo In OjllcPypwrtiftfte.

H 3 A {Q'*' 18Tl 12T

Type LU KxlOa5 -U26 29 5 31

fa 1°35

a fi3o 53

PH Liaise

Na1 7l42 44

ca II hhl« 49

iTTIq62 65

C0366 67

S04

Mg54

L-Lili CI68 72 73

Card R

38

4°il

4-4 U 51?

20

Temp.°F

25

I

L£39 41

T1—I I 1 T

58 S3BTSource No.

>m78 79 80

Duplicate Columns 1-25 from Card Q

o;a26 28

N0359"

Cu

A.1IHI P04 II II B•

"35 33 "55

Zn

36 38 39Pe

41 42ik

45

Mn Olli46 49

Satids

Calc.

LJb[52 53 54 55 57

Ca,Mg

HardnessNon-

Carb.Determined

Color

I I I IoWHI58 63

No.

78 79280

64

3 469 70 73

/ 0 374 77

Card S

Duplicate Columns 1-25 from Card Q

IBr29 31

ABS _45

Beta

(pc/D

Alk. as

CaC03

RSC

1•

26 28

42 44 47

Alpha

(pc/D55 57

Recorded by: /MBC-66uJRnJ

Ra

58 60

c3 3 i32 35

j 1

48 50

1) •

61 63

Free

C02 S

36 38

1

1t..._

U

(ug/l)64 66

39 41

No.

80

Punched by; /TlAdgO tort ft/ Date;£ -H-7i-

Published:

IOWA GEOLOGICAL SURVEY.In Cooperation with U. S. Geological survey

Location:

Town; G/rrrthrr>r>t<

AE+NW+

RECORD OK WELL

( N E).(_&_>') iCounty Tatna

sec• 9 T.££N. ,R./£Kv.r.yy.^h/ Twp,

Well name and number ,^,^, _^A^JLJ^AUZ£Al±LOCwner ___ Address

Tenant Address

^" /(9&3..

- - f -

Contractor 'EJ*^ ,. ?J/,S/ ?«•Drillers ^. ,:: . ' , ".. •• •

Addrecs _/ •- •_^_

Drilling dates i , ... • ;,.' .. .•.& -

Well data:

Elevations: Drilling curb_ Y/

Determined by

_feet; Land surface

Topographic position ;/,-* • ,- , __

Total depth: Reported _^v feet; Measured

Drilling method

feet

feet

Hole and casing aata „-^,-. ^.n,..^(Give amount, size, kind, and depth of all casing; type and

— ~ i ,/.; i -• r-. t_^ -m

position of seais and packers;j—ij

cementing; how finished—perforated pipe, screen,

gravel pack, open hole, etc.)

afeeve

Original depth to water /^ ft. below

Original elevation of water level

Sources of water: Principal

Date

_ft.; Source-; of data

.; Others

1 - —— —— .

CASING DIAGRAM LOG

Vertical scale

1,—L- -

11 ii j111 ii

1 1y,

' 1N

1

;i

1

i i :1 11—,

1

I

1!

1

\-1

1 1

— .

I"

1

||1

-

1

1

—i

1

I 1I11I1|iii1

DateProduction data:

Static depth to water /.£.

Pumping level _/„», r.,,*h ?. -/' pM(rn. ,,'• -33- "*»'> ,r'

., Measuring point

.at zso g.p.m.___

Specific capacity g.p.m. per ft. drawdown; Temperature

Pump data: Type pump .Length-Cylinder or bowls: Dia._

Power

_i Column. Dia.

.Length ,j Suction pipe

• : Airline

Estimated rate of production:

U{c of water

.g.p.m. for

Date .-..ampled

Sampled by

Total solids

Insoluble matter

Alkalinity (Meo)Alkalinity (Phn)

pH

Fe203+Mn203+Al203Alkali as sodium

Calcium

Magnesium

Iron (unfiltered)

Manganese

Nitrate

Fluoride

Chloride

Sulphate

Bicarbonate

Hardness (ppm)

Hardness (gpg)

Remarks

MTER ANALYSES (in parts per million)

WaRch t^mt,A-L, Betwc.i f-. .

/o.S

<?<*<*

Q-Q

jfaht, 7.7f.j-

_2_Zt>.4

S-O

• ff.g

0.3

153. _>

u.s-

Ott

Jits', a day

Laboratory data:Sample range 8 - -£~/Spls. prepared by >&.,.'.,..», .,. Yiashed range

Sample storage location .. - .' /No. spli-. jj No. dupls & cond. 3 - ,,'->,.-./

oy 'L.

Driller's log and cond.

Insoluble residues: Prepared by

Microscopic study ' strip .Log • •. -

C-cn. log Correl. by

.Studied by. Strip log

V.ATER LEVEL DATA

Measuring point

Date Depth to water Altitude Remarks

REMARKS

— _ '

S. =____.

l^f- i—^ <? - *f- t .(, : • 7"/„, „2 Y /£ *• ' ' • ' •• >/

~ 7/•• • -•>'• -rt "ft/it.

T

¥