8/7/2019 Chesapeake Bay Report Card

1/6

report card2010

Chsk By

8/7/2019 Chesapeake Bay Report Card

2/6

C

D-

C

C-

D

:HVWHUQ6KRUHWULEXWDULHV

+RZGRHVWKH%D\VZDWHUTXDOLW\DIIHFWPH"

Hlthy wtr qlity prvid bttr hbitt diti fr rb, fih, d thr qtipi. Dilvd xyg i til t th rvivl f ll th rgi; gd wtr

lrity i dd fr qti gr, whih r hbitt d rry r fr qtirgi; d lw hlrphyll a lvl idit bld yt, whih bfitbth h d qti pi lik. T thr iditr r irprtd it Wtr Qlity Idx. T Chpk By Wtr Qlity Idx rd C i 2010,whih i idrd drtly pr.

P sysm hlh. Ti rgi hdth d lrgt dli f ll rgi,fr C i 2009 t D i . Fr fth ix iditr drppd i r.

Inml ssssmn. Phytplktity diti ti tb vry pr with fr th frth

yr i rw. Wtr qlity iditrrid tdy fr lt yr. A vrllhlth r t b lltd d tiffiit biti dt.

C-

D

8SSHU:HVWHUQ6KRUHM sysm hlh. Frth firt ti i 2007, thi i t thhight-rkd rgi. Bthi ityr drppd hrply, d vry prwtr lrity prit i thi rgi.

F 3DWDSVFRDQG%DFN5LYHUVVy sysm hlh. Friditrhlrphyll a, wtr lrity,phytplkt ity, d qtigrrd .

F /RZHU:HVWHUQ6KRUH0'Vy sysm hlh

lws-nk gin in h By.Dpit lt yr light iprvt, thirgi' hlth ti t dli. Fivf th ix iditr rd F.

3DWX[HQW5LYHUP sysm hlh. N iprvti vrll hlth f thi rgi. Whil wtrqlity iditr dlid, phytplkt

d bthi iti iprvd.

3RWRPDF5LYHU

5DSSDKDQQRFN5LYHU

8/7/2019 Chesapeake Bay Report Card

3/6

&+(6$3($.(%$

8/7/2019 Chesapeake Bay Report Card

4/6

Mly sysm hlh.Wtr lrity r drd ftr

vrl yr f iprvt. Tr i phytplkt ity r frthi rgi.

Wtrlrity

Dilvdxyg

Chlrphyll a Aqtigr

Phytplktity

Bthiity

,QGLFDWRUVXVHGLQWKHUHSRUWFDUGT i f thi rprt rd i t prvid trprt, tily, d ggrphilly dtildt f 2010 Chpk By hlth. Chpk By hlth i dfid th prgrfthree water quality indicators (hlrphyll a, dilvd xyg, d wtr lrity)d three biotic indicators (qti gr, phytplkt ity, d bthiity) twrd itifilly drivd lgil thrhld r gl. T ix iditrr bid it vrrhig By Hlth Idx, whih i prtd th rprt rdvrll r. Dtild thd vilbl t www.eco-check.org/reportcard/chesapeake/ .

(DVWHUQ6KRUHWULEXWDULHVDQGPDLQVWHP%D\D

C-

D

C

C+

C-

M sysm hlh. Tvrll hlth f thi rgi rid

th lt yr. Bthiity r dlid th t fll iditr, fllwd by wtr lrity.

8SSHU(DVWHUQ6KRUHP sysm hlh. Whil wtrqlity iditr dlid, bitiiditr tyd th . Dpit ltyr iprvt, thi rgi hlth t b dliig.

&KRSWDQN5LYHUP sysm hlh. Ti rgi

hd th grtt ir i wtr lrityr, bt ll biti iditr dlid.Ovrll r rid tdy.

/RZHU(DVWHUQ6KRUH7DQJLHU

8SSHU%D\M sysm hlhhighs-nk gin in h By.Ovrll hlth drppd lightly fr ltyr. Bthi ity r drdfr A i t B i .

0LG%D\Mly sysm hlh.

Whil ll wtr qlity iditr dlid,phytplkt ity ti tiprv d rd th hight i yr.

/RZHU%D\

8/7/2019 Chesapeake Bay Report Card

5/6

T Pt Rivr rgi' vrll hlth r drd fr49 i 2009 t i 2010, hgig th vrll grd fr C t D. Ti dli i r y b rltd t vrl ftr,ildig high trflw i lt witr d rly prig.

Whil ttl trflw t Chpk By w withi th

rl rg drig th 2010 wtr yr (Otbr 2009Sptbr 2010), Pt Rivr dily flw w frqtlyhighr th vrg, pilly drig lt witr. w jrtr vtJry d Mrh , 2010tribtdt thi high flw. T trflw pttr w iq b iti l t hv tw vry high flw vt l tgthr,d b th diti wr fllwd by prlgdprid f lwr th vrg flw i lt prig d r.

A lrg prtg f th phphr d dit

ldig i yr rlt fr jt r tw high flwvt. T high witr flw i th Pt likly tribtd bv vrg tf itrg, phphr, d dit t th try i rly 2010. Fr f th ixwtr qlity d biti iditr r drd hrply thi yr, pibly rltf ird witr ld fllwd by drd r ld. T phytplktity r w th lwt i yr, th hlrphyll a r w th lwt iitrig bg i 1986, d th wtr lrity d bthi ity r dlidfllwig ltipl yr f iprvt. Mr ifrti i vilbl t http://www.eco-check.org/reportcard/chesapeake//summaries/potomac_river/ .

,

,

,

,

,

,

,

,

,

,

Nrl rg

dily flw

Lg-tr () dily flw

Streamflow

(cubic

feetpersecond)

SptAgJlJMyAprMrFbJDNvOt

3RWRPDF5LYHUKHDOWKGHFOLQHVLQIROORZLQJKLJKZLQWHUIORZ

Bd wtr qlity d biti iditr, th vrll hlth f Chpk By dlidfr th firt ti i fr yr, by . T vrll grd dlid fr C i 2009 t C i2010, whih idit drtly pr hlth. Oly tw rprtig rgi (J Rivrd Yrk Rivr) hd iprvd grd i 2010, thr wr hgd, d i dlid.T hight-rkd rgi i prvi yr, th Uppr Wtr Shr, drd t frthhight. T Uppr By (C+) b th tp-rkd rgi i 2010.

&KHVDSHDNH%D\KHDOWKGHFOLQHGLQ

2010 Potomac River streamflow compared to the long-term average. Two storm events contributeda large amount of nutrients and sediments to the river. Data: USGS; normal range is .

High-flow event in Great FallsPark along the Potomac River

in March 2010.

8/7/2019 Chesapeake Bay Report Card

6/6

eco-check.orgian.umces.edu umces.edu

$FNQRZOHGJHPHQWVRprt rd prdd d rld i April by EChk (noaaumces Prtrhip) d thItgrti d Appliti Ntwrk, Uivrity f Mryld Ctr fr Evirtl Si.

T dt d thd drpiig thi rprt rd rprt th lltiv ffrt f y idividld rgizti wrkig withi th Chpk By itifi d gt ity. Tfllwig rgizti tribtd igifitly t th dvlpt f th rprt rd: ChpkBy Prgr, Uivrity f Mryld Ctr fr Evirtl Si, Ntil Oi dAtphri Adiitrti, Mryld Dprtt f Ntrl Rr, Virgii Dprtt fEvirtl Qlity, Virgii Ititt f Mri Si, Vrr Irprtd, U.S. EvirtlPrtti Agy, Mryld Dprtt f th Evirt, Itrtt Cii th PtRivr Bi, Old Dii Uivrity, Mrg Stt Uivrity, d U.S. Glgil Srvy.

Front cover: tp phtitkpht.; btt phtChpk By Prgr. Inside flap: Grt FllNtil Prk.

Jtr JD, Myr DL, Hyr KE, , A pri f trbidity-bd d trflw-bd tit fpdd-dit trti i thr Chpk By tribtri: U.S. Glgil Srvy SitifiIvtigti Rprt 20095165, 37p.

:KDWGRWKHJUDGHVPHDQ"

chesapeakebay.noaa.gov

Mt wtr qlity d bilgil hlth iditr t dird lvl.Qlity f wtr i th lti td t b gd, ft ldig t gdhbitt diti fr fih d hllfih.

All wtr qlity d bilgil hlth iditr t dird lvl. Qlityf wtr i th lti td t b vry gd, t ft ldig t vrygd hbitt diti fr fih d hllfih.

Tr i ix f gd d pr lvl f wtr qlity d bilgil hlthiditr. Qlity f wtr i th lti td t b fir, ldig t firhbitt diti fr fih d hllfih.

S r fw wtr qlity d bilgil hlth iditr t dirdlvl. Qlity f wtr i th lti td t b pr, ft ldig tpr hbitt diti fr fih d hllfih.

Vry fw r wtr qlity d bilgil hlth iditr t dirdlvl. Qlity f wtr i th lti td t b vry pr, t ftldig t vry pr hbitt diti fr fih d hllfih.