appendix c swmm 4 to 5 comparison - chesapeake, … c-1. swmm 4 to 5 conversion differen ces (50-yr...
TRANSCRIPT
Appendix CSWMM 4 to 5 Comparison
Department of Public Works
Tab
le C
-1.
SWM
M 4
to 5
Con
vers
ion
Diff
eren
ces (
50-Y
r Sc
enar
io 3
Res
ults
with
No
Dat
a C
hang
es)
Coo
per'
s Ditc
h M
DPU
This
tabl
e de
pict
s "ap
ples
-to-a
pple
s" d
iffer
ence
s bet
wee
n th
e (o
rigin
al) S
WM
M V
ersi
on 4
and
(con
verte
d) V
ersi
on 5
mod
els.
In o
rder
to p
reve
nt c
lutte
r, on
ly th
e 50
-yea
r Sce
nario
3 re
sults
are
show
n.Th
e fin
al m
odel
s del
iver
ed w
ith th
is T
echn
cial
Mem
oran
dum
inco
rpor
ate
chan
ges a
s doc
umen
ted
in th
e m
emor
andu
m.
231
251
297 31
3315
431
499
51355
9
907
0
50,0
00
100,
000
150,
000
200,
000
250,
000
Flood Volume (ft3)
Nod
e N
umbe
rSW
MM
4SW
MM
5
Coo
per's
Ditc
h W
ater
shed
C
ity o
f Che
sape
ake,
Virg
inia
C-1
UR
S N
o. 1
1657
815
O
ctob
er 2
012
Tab
le C
-1.
SWM
M 4
to 5
Con
vers
ion
Diff
eren
ces (
50-Y
r Sc
enar
io 3
Res
ults
with
No
Dat
a C
hang
es)
Coo
per'
s Ditc
h M
DPU
Nod
e N
umbe
r
SWM
M 4
50-y
ear
Nod
al F
lood
Vol
ume
(ft3
)
SWM
M 5
50-y
ear
Nod
al F
lood
Vol
ume
(ft3
)
Agr
eem
ent
SWM
M 4
to 5
(per
cent
)12
361
,000
61,0
0010
0%
129
17,0
0048
,000
282%
151
29,0
0022
,000
76%
169
68,0
0046
,000
68%
171
40,0
0022
745
,000
53,0
0011
8%
231
113,
000
83,0
0073
%
243
69,0
0069
,000
100%
251
65,0
0011
6,00
017
8%
259
22,0
0022
,000
100%
297
194,
000
196,
000
101%
313
75,0
0085
,000
113%
315
185,
000
224,
000
121%
317
22,0
0022
,000
100%
357
36,0
0034
,000
94%
367
18,0
0023
,000
128%
379
58,0
00
417
17,0
0040
,000
235%
419
42,0
0042
125
,000
48,0
0019
2%42
560
,000
57,0
0095
%42
729
,000
431
168,
000
76,0
0045
%
437
29,0
0045
316
,000
16,0
0010
0%
Res
ults
of s
elec
t pon
ding
are
a (F
lood
vol
ume
varie
s to
pond
ing
area
)
Res
ults
of s
elec
t pon
ding
are
a (F
lood
vol
ume
varie
s to
pond
ing
area
)C
ompu
tatio
nal d
iffer
ence
s in
SWM
M e
ngin
es
Res
ults
of s
elec
t pon
ding
are
a (F
lood
vol
ume
varie
s to
pond
ing
area
)
Res
ults
of s
elec
t pon
ding
are
a (F
lood
vol
ume
varie
s to
pond
ing
area
)
Exp
lana
tion
Res
ults
of s
elec
t pon
ding
are
a (F
lood
vol
ume
varie
s to
pond
ing
area
)
Coo
per's
Ditc
h W
ater
shed
C
ity o
f Che
sape
ake,
Virg
inia
C-2
UR
S N
o. 1
1657
815
O
ctob
er 2
012
Tab
le C
-1.
SWM
M 4
to 5
Con
vers
ion
Diff
eren
ces (
50-Y
r Sc
enar
io 3
Res
ults
with
No
Dat
a C
hang
es)
Coo
per'
s Ditc
h M
DPU
Nod
e N
umbe
r
SWM
M 4
50-y
ear
Nod
al F
lood
Vol
ume
(ft3
)
SWM
M 5
50-y
ear
Nod
al F
lood
Vol
ume
(ft3
)
Agr
eem
ent
SWM
M 4
to 5
(per
cent
)E
xpla
natio
n46
561
,000
61,0
0010
0%47
738
,000
37,0
0097
%49
916
1,00
014
8,00
092
%51
113
,000
13,0
0010
0%51
371
,000
82,0
0011
5%55
980
,000
92,0
0011
5%56
117
,000
563
14,0
0061
157
,000
46,0
0081
%61
521
,000
13,0
0062
%62
525
,000
23,0
0092
%63
111
,000
14,0
0012
7%63
556
,000
47,0
0084
%75
560
,000
791
44,0
0041
,000
93%
841
10,0
0085
373
,000
65,0
0089
%86
965
,000
68,0
0010
5%87
310
,000
907
145,
000
145,
000
100%
947
11,0
0095
942
,000
38,0
0090
%96
116
,000
989
13,0
0015
,000
115%
% A
gree
men
tT
otal
Vol
ume
(ft3
):2,
467,
000
2,
439,
000
98.9
%
Com
puta
tiona
l diff
eren
ces i
n SW
MM
eng
ines
Com
puta
tiona
l diff
eren
ces i
n SW
MM
eng
ines
Com
puta
tiona
l diff
eren
ces i
n SW
MM
eng
ines
Coo
per's
Ditc
h W
ater
shed
C
ity o
f Che
sape
ake,
Virg
inia
C-3
UR
S N
o. 1
1657
815
O
ctob
er 2
012
!
!!!
!
!!!
!!
!
!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!! !
!
!
!
!
!
!!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
! !
!!
!
!
!
!
!!!
!
!!!!
!!
!
!!
!
!
!!
!
!!
!
!!!!!
!
!
!!!
!!
!!!!!!
!
!
!
!
!
!
!!
!
!
!!!
!!
!
!
!
!
!!!
!!
!!!
!
!
!
!!
!
!
!
!!!
!
!!!
!
!!
!
!
!
!
!
! !!!
!!!
!!
!
!!
!!
!
!
!
!
!
! !
!
! !
!!
!
!
!
!
!
!!
!
!
!
!!
!!
!
!!
!
!
!!
!!
!!
!
!
!
!!
!!
!
!
!!
!
!
!!!
!
!
!! ! !! !
!
!
!!
!
!
!
!
!
!
!
!!
!! !
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ! !! !
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!!!
!!
!!
!
!
!
! !
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!!
!
!
!
! !!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
945
129
379
589631
243
841
453
499
559
989
259
907
563
615 611
869
513
431421
123
149
853317
315357
297
251
227
959961
625
477
465
791
635
511
417
313
231
BATTLEFIELDBLVD
CEN
TER
VILL
ETP
KE
JOH
NST
OW
NR
D
CEDAR RD
TUC
KST
BENEFIT RD
HIL
LWE
LLR
D
PARKER RD
BATT
LEST
TRIN
KLE
ST
MOUNT PLEASANT RD
DAR
DEN
ST
BIN
FOR
DST
WATER
SR
D
CH
ESA
PEA
KE
EX
PY
FENTRESS RD
SIGN PINE RD
OLD DR
FEN
TRES
SLO
OP
GLORIA DR
PEACEFUL RD
HANBURY RD
WIL
LOW
OAK
DR
HICKORY RD
BACK RD
ETHERIDGE MANOR BLVD
MIL
LS
TON
ER
D
BEAVER DAM RD
BELLS MILL RD
HEAD OF RIVER RD
FOREST RD
JULE DR SYDENHAMBLV
D
REBEL RD
FORDSMERE RD
SHEA DR
SAINT BRIDESRD
ELAINE ST
MAN
ND
R
BRIARFIELDDR
BECKLEY
LN
HALL
DR
FOREST MILLS RD
WINFALL DR
FRANK DR
THISTLEY LN
EDIN
BUR
GH
PKW
Y
CADDIE ST
HOLLAND DR
BUTTERFLY DR
WAR
RIC
KR
D
BLACKTHORNE DR
HARW
ICH
DR
PAMLICO BLVD
BAY
DO
N L
N
MILLWOOD AVE
KEG
MA
N R
D
STADIU
MDR
ALLEN DR
BRA
ND
ER
MILL
DR
AMBROSE ST
CO
RAPEAKE
DR
CU
RR
ITUC
KD
R
ASHLEY RD
FAIRHAVEN RD
LUR
AYTE
R
MARION DR
WOODBRIDGE DR
HILLSIDE AVE
FLINTLOC
K RD
ARTHURS CT
WOODCOTT DR
NUGENT DR
BARTELL DR
RESERVATION RD
FERN
HAM
LN
UNSER DR
LYNETTE AVE
DOVE DR
RIVER GATE RD
LUID DR
WILLARD DR
MELO
NIE
DR
ERIKPAUL
DR
SIERRA DR
WARHAWKS RD
DOWNING DR
SABER DR
UN
KN
OW
N
VANETTE DR
TIKI
WAY
KING
SBU
RY
DR
GWINIVERE ST
WILSO
ND
R
PRIN
CE
EDW
ARD
DR
BUTTS STATION RD
TROTTERS LN
MARSTON DR
CED
ARLN
EWELL LN
REDBAY
LN
CAR
AWAN
LN
LOCKS RD
ARCH RD
FAIRFIELD
DR
DO
CTO
REA
SON
RD
KEELING DR
HURDLE DR
CAR
AVEL
LED
R
LUTHER ST
DEW
ALDR
D
WATERWHEEL RD
CO
BBLE
SCO
TTW
AY
YORKSHIRE
TRL
RAVEN
WO
OD
SD
R
WOODARDS FORD RD
STARDALE DR
PACELS WAY
GR
EEN
WAY
DR
CH
ESA
PEA
KE
EX
PRES
SW
AYEX
PY
BEAUREGARD DR
GIL
ES
DR
HAVEN CIR
RU
THER
FOR
DD
R
ALBEMARLE
DR
PRISCILLA LN
HABITAT XING
GREENGABLE WAY
HILLCREST PKWY
REDLEAFE CIR
GR
ANTH
AM L
N
CALEBDR
GLA
DES
DA
LE D
R
HIC
KORY
FOR
EST
DR
ANGUS RD
RAVENSTONE DR
AVON RD
GREAT BRIDGE BLVD
MEGGETT DR
REMINGTON
DR
MIL
LLA
NDIN
G R
D
LINKENBOROUGH DR
NEW
ZEAL
AND
REA
CH
CANTOR ST
FOXGATE QUARTER
LAKE CIR
CH
ALB
OU
RN
ED
R
WO
ODF
ORD
DR
PINE BARK DR
SUMMIT RIDGE DR
WATERFALL WAY
CLEARWATER LN
DRAUGHON RD
WA
RR
EN
AVE
CALLISON DR
DAR
BYR
UN
DR
ILEX ST
CAROL DR
EDNA ST
NAPLES
CT
AMIE DR
PLEASANT WAY
WELCH LN
ETHERIDGE RD
BELL
INGHAM
DR
MILL
RU
N
RAM
SG
ATELN
ABERDEEN LN
DUPONTST
CO
LON
YD
R
VILLA DR
BRITWELL DR
TILDEN AVE
ROBERT ST
STONEGATE PKWY
LAU
REL
RID
GE
LN
LIBR
ARY
DR
GLASGOW ST
HAN
BURY
CT
HAW
K BL
VD
WHISPER HOLLOW DR
KEMPSVILLE RD
WATER OAK CT
WE
SS
EX
DR
GRAYROCK
RD
BASIN
RD
CORBY GLEN AVE GRAVER LN
GLO
SSST
HODGES RD
GRANDY DR
VIN
EYAR
DD
R
JAM
AIC
AAV
EWIC
KWO
OD
DR
WO
OD
YR
IDG
EC
T
GO
LDEN
MAP
LED
R
NORLINA DR
AVONLEA DR
HERI
TAG
E DR
TAXUS ST
DEN
HAM
ARC
H
WHITEHURST RD
BRIDGEVIEW CIR
FOR
DYC
ED
R
EDENBRIDGE DR
ALBEMAR
LEC
T
CATR
INA
LN
HELEN AVE
WHITE DOGWOOD DR
CALUMET ST
MARBLE ARCH
TREE FERN DR
MONTEBELLO CIR
FLAXM
ILL DR
BROADWINSOR CRES
WIL
DC
ATP
KW
Y
BAR
TLETT
DR
WAT
ER
VIE
WC
IR
MID
DLE
OAKS
DR
PINE
S O
FW
ARR
ICK
DR
LON
GAV
E
GRENADIER DR
HILD
APIN
ED
R
DU
STY R
D
SANDY RD
JO ANNE CIR
HAR
TSW
OO
DTE
R
JODI
LYN
NTR
L
OLD
VIN
TAG
ER
D
WINDSOR RD
BENSON LN
CHU
RCH
ILL
DR
VICTO
RIA
DR
NORMAN WAY
CED
ARLAKES D
R
OLD
CEN
TER
VILL
ETP
KE
TWO
GATESCIR
HO
LLYG
ATE
LN
ROUT
E16
8RA
MP
DO
NN
ING
TON
DR
SHAD
OW
OO
DLN
MONTEVALE DR
FRESNO DR
CHANDLER DR
ASHFORTH WAY
SOUTHFIELD DR
SANDYHILL W
AY
SWEETBAY DRWATERFORD DR
ROYAL OAK DR
GREENFIELD LN
SPURLANE CIR
HERITAGE PT
DRURY LN
NIC
HO
LAS
CT
SPU
RLO
CK
WAY
CONSTANCE DR
CH
ELTI
NG
HAM
CT
HAW
KHU
RS
TD
R
BEACON HILL RD
INLET QUAY
UN
ION
FOR
GE
LN
RUFFIN RICKS ST
WINDLESHAM DR
HIGH POINT LN
CO
NQ
UE
STD
R
MIL
DE
NH
ALL
DR
GLOVERS CT
ROANO
KEARCH
WYM
ER
SC
T
CHRI
SCT
CHRISTA DR
BRUTON CT
RATHW
ELLCT
MERIDIAN
DR
WAYNE AVE
HATTER
ASC
RES
HALLBRIDGE DR
DILLWYN DR
SYCAMORE LN
KINGSBRIDGE PL
FRANCONIA DR
TALLAHASSEEDR
COPELANDDR
PINE LEVEL LN
ARC
HER
DR
GLENDA CRES
HAWLEY CT
WO
OD
SMER
ER
D
STO
NELE
IGH
CT
LORI DR
REFUGE XING
MANTEO CT
MO
WBR
YC
T
HESTERDR
WATSON RD
KINGDOM WAY
WOODMONT DR
TYBO
UR
NE
CT
PIN
OAK
PL
NORTHFIELD ST
IVANHOECT
FARGOCT
WANCHESE CT
STERLING CT
DINWIDDIE CT
MEREDITH DR
GAMMON TRL
AVERY CT
ASTO
NPL
PON
TIA
CS
T
SEPTEMBER LN
BLAC
KTH
OR
NE
CT
LON
GPT
RIDGECREST PL
ETH
ERID
GE
RD
CHESAPEAKEEXPY
KEELING
DR
FAIRFIELD DR
CH
ESAPEAKEEXPY
SIGN PINE RD
OLD DR
UN
KNO
WN
WATERS RD
CHESAPEAKEEXPY
LAKEC
IR
CALUMET ST
! Existing NodesExisting Links
130,000
50-year Adtl. Flood Vol., cf10-year Flood Vol., cf
Figure C-1. Flooding for 10-Yr and 50-Yr Storms: Existing Hydrology, Existing Drainage (Scenario 1) - SWMM 4
See GIS for Complete Details
0 2,500 5,000
Feet
±
Node # 10-year 50-year Node # 10-year 50-year Node # 10-year 50-year123 - 25,000 417 - 17,000 625 - 25,000 129 - 12,000 421 - 24,000 631 - 12,000 149 43,000 111,000 431 18,000 164,000 635 15,000 55,000 227 - 34,000 453 - 14,000 791 - 42,000 231 12,000 74,000 465 - 29,000 841 - 73,000 243 12,000 34,000 477 - 39,000 853 25,000 277,000 251 - 63,000 499 16,000 138,000 869 33,000 65,000 259 - 22,000 511 - 13,000 907 86,000 151,000 297 56,000 188,000 513 17,000 69,000 945 - 89,000 313 23,000 73,000 559 81,000 220,000 959 15,000 42,000315 96,000 181,000 563 - 17,000 961 - 16,000 317 - 23,000 589 70,000 228,000 989 - 12,000 357 - 36,000 611 - 59,000379 29,000 80,000 615 - 23,000
Nodal Flooding Volumes for Existing Drainage / Existing Hydrology, ft3
Relative Volume
SWMM 4
Cooper's Ditch Watershed City of Chesapeake, Virginia
C-4 URS No. 11657815 October 2012
!
!!!
!
!!!
!!
!
!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!! !
!
!
!
!
!
!!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
! !
!!
!
!
!
!
!!!
!
!!!!
!!
!
!!
!
!
!!
!
!!
!
!!!!!
!
!
!!!
!!
!!!!!!
!
!
!
!
!
!
!!
!
!
!!!
!!
!
!
!
!
!!!
!!
!!!
!
!
!
!!
!
!
!
!!!
!
!!!
!
!!
!
!
!
!
!
! !!!
!!!
!!
!
!!
!!
!
!
!
!
!
! !
!
! !
!!
!
!
!
!
!
!!
!
!
!
!!
!!
!
!!
!
!
!!
!!
!!
!
!
!
!!
!!
!
!
!!
!
!
!!!
!
!
!! ! !! !
!
!
!!
!
!
!
!
!
!
!
!!
!! !
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ! !! !
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!!!
!!
!!
!
!
!
! !
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!!
!
!
!
! !!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!681
589631
243
841
453
499
989
367259
907
563
615 611
869
513
431427437
421
129
123
149
853317
315357
297
251
227
959
625
477
465
791
945
559
635
511
419417
313
231
BATTLEFIELDBLVD
CEN
TER
VILL
ETP
KE
JOH
NST
OW
NR
D
CEDAR RD
TUC
KST
BENEFIT RD
HIL
LWE
LLR
D
PARKER RD
BATT
LEST
TRIN
KLE
ST
MOUNT PLEASANT RD
DAR
DEN
ST
BIN
FOR
DST
WATER
SR
D
CH
ESA
PEA
KE
EX
PY
FENTRESS RD
SIGN PINE RD
OLD DR
FEN
TRES
SLO
OP
GLORIA DR
PEACEFUL RD
HANBURY RD
WIL
LOW
OAK
DR
HICKORY RD
BACK RD
ETHERIDGE MANOR BLVD
MIL
LS
TON
ER
D
BEAVER DAM RD
BELLS MILL RD
HEAD OF RIVER RD
FOREST RD
JULE DR SYDENHAMBLV
D
REBEL RD
FORDSMERE RD
SHEA DR
SAINT BRIDESRD
ELAINE ST
MAN
ND
R
BRIARFIELDDR
BECKLEY
LN
HALL
DR
FOREST MILLS RD
WINFALL DR
FRANK DR
THISTLEY LN
EDIN
BUR
GH
PKW
Y
CADDIE ST
HOLLAND DR
BUTTERFLY DR
WAR
RIC
KR
D
BLACKTHORNE DR
HARW
ICH
DR
PAMLICO BLVD
BAY
DO
N L
N
MILLWOOD AVE
KEG
MA
N R
D
STADIU
MDR
ALLEN DR
BRA
ND
ER
MILL
DR
AMBROSE ST
CO
RAPEAKE
DR
CU
RR
ITUC
KD
R
ASHLEY RD
FAIRHAVEN RD
LUR
AYTE
R
MARION DR
WOODBRIDGE DR
HILLSIDE AVE
FLINTLOC
K RD
ARTHURS CT
WOODCOTT DR
NUGENT DR
BARTELL DR
RESERVATION RD
UNSER DR
LYNETTE AVE
DOVE DR
RIVER GATE RD
LUID DR
WILLARD DR
MELO
NIE
DR
ERIKPAUL
DR
SIERRA DR
WARHAWKS RD
DOWNING DR
SABER DR
UN
KN
OW
N
VANETTE DR
TIKI
WAY
KING
SBU
RY
DR
GWINIVERE ST
WILSO
ND
R
PRIN
CE
EDW
ARD
DR
BUTTS STATION RD
TROTTERS LN
MARSTON DR
CED
ARLN
EWELL LN
REDBAY
LN
CAR
AWAN
LN
LOCKS RD
ARCH RD
FAIRFIELD
DR
DO
CTO
REA
SON
RD
KEELING DR
HURDLE DR
CAR
AVEL
LED
R
LUTHER ST
DEW
ALDR
D
WATERWHEEL RD
CO
BBLE
SCO
TTW
AY
YORKSHIRE
TRL
RAVEN
WO
OD
SD
R
WOODARDS FORD RD
STARDALE DR
PACELS WAY
GR
EEN
WAY
DR
CH
ESA
PEA
KE
EX
PRES
SW
AYEX
PY
BEAUREGARD DR
GIL
ES
DR
HAVEN CIR
RU
THE
RFO
RD
DR
ALBEMARLE
DR
PRISCILLA LN
HABITAT XING
GREENGABLE WAY
HILLCREST PKWY
REDLEAFE CIR
GR
ANTH
AM L
N
CALEBDR
GLA
DES
DA
LE D
R
HIC
KORY
FOR
EST
DR
ANGUS RD
RAVENSTONE DR
AVON RD
GREAT BRIDGE BLVD
MEGGETT DR
REMINGTON
DR
MIL
LLA
NDIN
G R
D
LINKENBOROUGH DR
NEW
ZEAL
AND
REA
CH
CANTOR ST
FOXGATE QUARTER
LAKE CIR
CH
ALB
OU
RN
ED
R
WO
ODF
ORD
DR
PINE BARK DR
SUMMIT RIDGE DR
WATERFALL WAY
CLEARWATER LN
DRAUGHON RD
WA
RR
EN
AVE
CALLISON DR
DAR
BYR
UN
DR
ILEX ST
CAROL DR
EDNA ST
NAPLES
CT
AMIE DR
PLEASANT WAY
WELCH LN
ETHERIDGE RD
BELL
INGHAM
DR
MILL
RU
N
RAM
SG
ATELN
SCAR
LETTD
R
ABERDEEN LN
DUPONTST
CO
LON
YD
R
VILLA DR
BRITWELL DR
TILDEN AVE
ROBERT ST
STONEGATE PKWY
LAU
REL
RID
GE
LN
LIBR
ARY
DR
GLASGOW ST
HAN
BURY
CT
HAW
K BL
VD
WHISPER HOLLOW DR
KEMPSVILLE RD
WATER OAK CT
WE
SS
EX
DR
GRAYROCK
RD
BASIN
RD
CORBY GLEN AVE GRAVER LN
GLO
SSST
HODGES RD
GRANDY DR
VIN
EYAR
DD
R
JAM
AIC
AAV
E
STOCKLEYBRIDGE DR
WIC
KWO
OD
DR
WO
OD
YR
IDG
EC
T
GO
LDEN
MAP
LED
R
NORLINA DR
AVONLEA DR
HERI
TAG
E DR
TAXUS ST
DEN
HAM
ARC
H
WHITEHURST RD
BRIDGEVIEW CIR
FOR
DYC
ED
R
EDENBRIDGE DR
ALBEMAR
LEC
T
CATR
INA
LN
HELEN AVE
WHITE DOGWOOD DR
CALUMET ST
MARBLE ARCH
TREE FERN DR
MONTEBELLO CIR
FLAXM
ILL DR
BROADWINSOR CRES
WIL
DC
ATP
KW
Y
BAR
TLETT
DR
WAT
ER
VIE
WC
IR
MID
DLE
OAKS
DR
PINE
S O
FW
ARR
ICK
DR
LON
GAV
E
GRENADIER DR
HILD
APIN
ED
R
DU
STY R
D
SANDY RD
JO ANNE CIR
HAR
TSW
OO
DTE
R
JODI
LYN
NTR
L
OLD
VIN
TAG
ER
D
WINDSOR RD
BENSON LN
CHU
RCH
ILL
DR
VICTO
RIA
DR
NORMAN WAY
CED
ARLAKES D
R
OLD
CEN
TER
VILL
ETP
KE
TWO
GATESCIR
HO
LLYG
ATE
LN
ROUT
E16
8RA
MP
DO
NN
ING
TON
DR
MONTEVALE DR
FRESNO DR
CHANDLER DR
ASHFORTH WAY
SOUTHFIELD DR
SANDYHILL W
AY
SWEETBAY DRWATERFORD DR
ROYAL OAK DR
GREENFIELD LN
SPURLANE CIR
HERITAGE PT
DRURY LN
NIC
HO
LAS
CT
SPU
RLO
CK
WAY
CONSTANCE DR
CH
ELTI
NG
HAM
CT
HAW
KHU
RS
TD
R
BEACON HILL RD
INLET QUAY
UN
ION
FOR
GE
LN
RUFFIN RICKS ST
WINDLESHAM DR
HIGH POINT LN
CO
NQ
UE
STD
R
MIL
DE
NH
ALL
DR
GLOVERS CT
ROANO
KEARCH
WYM
ER
SC
T
CHRI
SCT
CHRISTA DR
BRUTON CT
RATHW
ELLCT
MERIDIAN
DR
WAYNE AVE
HATTER
ASC
RES
HALLBRIDGE DR
DILLWYN DR
SYCAMORE LN
KINGSBRIDGE PL
FRANCONIA DR
TALLAHASSEEDR
COPELANDDR
PINE LEVEL LN
ARC
HER
DR
GLENDA CRES
HAWLEY CT
WO
OD
SMER
ER
D
STO
NELE
IGH
CT
LORI DR
REFUGE XING
MANTEO CT
MO
WBR
YC
T
HESTERDR
WATSON RD
KINGDOM WAY
WOODMONT DR
PIN
OAK
PL
NORTHFIELD ST
IVANHOECT
FARGOCT
WANCHESE CT
STERLING CT
DINWIDDIE CT
MEREDITH DR
GAMMON TRL
AVERY CT
ASTO
NPL
PON
TIA
CS
T
SEPTEMBER LN
BLAC
KTH
OR
NE
CT
LON
GPT
RIDGECREST PL
ETHERIDGE RD
CHESAPEAKEEXPY
KEELING
DR
FAIRFIELD DR
CH
ESAPEAKEEXPY
SIGN PINE RD
OLD DR
UN
KNO
WN
WATERS RD
CHESAPEAKEEXPY
LAKEC
IR
CALUMET ST
! Existing NodesExisting Links
120,000
50-year Adtl. Flood Vol., cf10-year Flood Vol., cf
Figure C-2. Flooding for 10-Yr and 50-Yr Storms: Existing Hydrology, Existing Drainage (Scenario 1) - SWMM 5
See GIS for Complete Details
0 2,500 5,000
Feet
±
Relative Volume
SWMM 5Node # 10-year 50-year Node # 10-year 50-year Node # 10-year 50-year
123 - 23,000 419 - 41,000 615 - 13,000129 - 27,000 421 10,000 47,000 625 - 23,000149 45,000 112,000 427 - 28,000 631 - 13,000227 - 37,000 431 16,000 75,000 635 10,000 46,000231 10,000 60,000 437 - 26,000 681 - 61,000243 11,000 34,000 453 - 15,000 791 - 41,000251 - 56,000 465 - 32,000 841 - 65,000259 - 19,000 477 - 38,000 853 15,000 257,000297 57,000 190,000 499 14,000 128,000 869 33,000 66,000313 29,000 83,000 511 - 13,000 907 85,000 152,000315 109,000 221,000 513 16,000 82,000 945 - 15,000317 - 22,000 559 75,000 174,000 959 - 38,000357 - 34,000 563 - 11,000 989 - 15,000367 - 23,000 589 47,000 188,000 417 - 39,000 611 - 46,000
Nodal Flooding Volumes for Existing Drainage / Existing Hydrology, ft3
Cooper's Ditch Watershed City of Chesapeake, Virginia
C-5 URS No. 11657815 October 2012
!
!!!
!
!!!
!!
!
!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!! !
!
!
!
!
!
!!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
! !
!!
!
!
!
!
!!!
!
!!!!
!!
!
!!
!
!
!!
!
!!
!
!!!!!
!
!
!!!
!!
!!!!!!
!
!
!
!
!
!
!!
!
!
!!!
!!
!
!
!
!
!!!
!!
!!!
!
!
!
!!
!
!
!
!!!
!
!!!
!
!!
!
!
!
!
!
! !!!
!!!
!!
!
!!
!!
!
!
!
!
!
! !
!
! !
!!
!
!
!
!
!
!!
!
!
!
!!
!!
!
!!
!
!
!!
!!
!!
!
!
!
!!
!!
!
!
!!
!
!
!!!
!
!
!! ! !! !
!
!
!!
!
!
!
!
!
!
!
!!
!! !
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ! !! !
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!!!
!!
!!
!
!
!
! !
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!!
!
!
!
! !!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
945
129
379
425
589631
243
841
453
499
559
989
259
907
563
615 611
869
513
431421
123
149
853317
315
169
357
297
251
227
959961
625
477
465
791
935
367
635
511
417
313
231
BATTLEFIELDBLVD
CEN
TER
VILL
ETP
KE
JOH
NST
OW
NR
D
CEDAR RD
TUC
KST
BENEFIT RD
HIL
LWE
LLR
D
PARKER RD
BATT
LEST
TRIN
KLE
ST
MOUNT PLEASANT RD
DAR
DEN
ST
BIN
FOR
DST
WATER
SR
D
CH
ESA
PEA
KE
EX
PY
FENTRESS RD
SIGN PINE RD
OLD DR
FEN
TRES
SLO
OP
GLORIA DR
PEACEFUL RD
HANBURY RD
WIL
LOW
OAK
DR
HICKORY RD
BACK RD
ETHERIDGE MANOR BLVD
MIL
LS
TON
ER
D
BEAVER DAM RD
BELLS MILL RD
HEAD OF RIVER RD
FOREST RD
JULE DR SYDENHAMBLV
D
REBEL RD
FORDSMERE RD
SHEA DR
SAINT BRIDESRD
ELAINE ST
MAN
ND
R
BRIARFIELDDR
BECKLEY
LN
HALL
DR
FOREST MILLS RD
WINFALL DR
FRANK DR
THISTLEY LN
EDIN
BUR
GH
PKW
Y
CADDIE ST
HOLLAND DR
BUTTERFLY DR
WAR
RIC
KR
D
BLACKTHORNE DR
HARW
ICH
DR
PAMLICO BLVD
BAY
DO
N L
N
MILLWOOD AVE
KEG
MA
N R
D
STADIU
MDR
ALLEN DR
BRA
ND
ER
MILL
DR
AMBROSE ST
CO
RAPEAKE
DR
CU
RR
ITUC
KD
R
ASHLEY RD
FAIRHAVEN RD
LUR
AYTE
R
MARION DR
WOODBRIDGE DR
HILLSIDE AVE
FLINTLOC
K RD
ARTHURS CT
WOODCOTT DR
NUGENT DR
BARTELL DR
RESERVATION RD
FERN
HAM
LN
UNSER DR
LYNETTE AVE
DOVE DR
RIVER GATE RD
LUID DR
WILLARD DR
MELO
NIE
DR
ERIKPAUL
DR
SIERRA DR
WARHAWKS RD
DOWNING DR
SABER DR
UN
KN
OW
N
VANETTE DR
TIKI
WAY
KING
SBU
RY
DR
GWINIVERE ST
WILSO
ND
R
PRIN
CE
EDW
ARD
DR
BUTTS STATION RD
TROTTERS LN
MARSTON DR
CED
ARLN
EWELL LN
REDBAY
LN
CAR
AWAN
LN
LOCKS RD
ARCH RD
FAIRFIELD
DR
DO
CTO
REA
SON
RD
KEELING DR
HURDLE DR
CAR
AVEL
LED
R
LUTHER ST
DEW
ALDR
D
WATERWHEEL RD
CO
BBLE
SCO
TTW
AY
YORKSHIRE
TRL
RAVEN
WO
OD
SD
R
WOODARDS FORD RD
STARDALE DR
PACELS WAY
GR
EEN
WAY
DR
CH
ESA
PEA
KE
EX
PRES
SW
AYEX
PY
BEAUREGARD DR
GIL
ES
DR
HAVEN CIR
RU
THER
FOR
DD
R
ALBEMARLE
DR
PRISCILLA LN
HABITAT XING
GREENGABLE WAY
HILLCREST PKWY
REDLEAFE CIR
GR
ANTH
AM L
N
CALEBDR
GLA
DES
DA
LE D
R
HIC
KORY
FOR
EST
DR
ANGUS RD
RAVENSTONE DR
AVON RD
GREAT BRIDGE BLVD
MEGGETT DR
REMINGTON
DR
MIL
LLA
NDIN
G R
D
LINKENBOROUGH DR
NEW
ZEAL
AND
REA
CH
CANTOR ST
FOXGATE QUARTER
LAKE CIR
CH
ALB
OU
RN
ED
R
WO
ODF
ORD
DR
PINE BARK DR
SUMMIT RIDGE DR
WATERFALL WAY
CLEARWATER LN
DRAUGHON RD
WA
RR
EN
AVE
CALLISON DR
DAR
BYR
UN
DR
ILEX ST
CAROL DR
EDNA ST
NAPLES
CT
AMIE DR
PLEASANT WAY
WELCH LN
ETHERIDGE RD
BELL
INGHAM
DR
MILL
RU
N
RAM
SG
ATELN
ABERDEEN LN
DUPONTST
CO
LON
YD
R
VILLA DR
BRITWELL DR
TILDEN AVE
ROBERT ST
STONEGATE PKWY
LAU
REL
RID
GE
LN
LIBR
ARY
DR
GLASGOW ST
HAN
BURY
CT
HAW
K BL
VD
WHISPER HOLLOW DR
KEMPSVILLE RD
WATER OAK CT
WE
SS
EX
DR
GRAYROCK
RD
BASIN
RD
CORBY GLEN AVE GRAVER LN
GLO
SSST
HODGES RD
GRANDY DR
VIN
EYAR
DD
R
JAM
AIC
AAV
EWIC
KWO
OD
DR
WO
OD
YR
IDG
EC
T
GO
LDEN
MAP
LED
R
NORLINA DR
AVONLEA DR
HERI
TAG
E DR
TAXUS ST
DEN
HAM
ARC
H
BRIDGEVIEW CIR
FOR
DYC
ED
R
EDENBRIDGE DR
ALBEMAR
LEC
T
CATR
INA
LN
HELEN AVE
WHITE DOGWOOD DR
CALUMET ST
MARBLE ARCH
TREE FERN DR
MONTEBELLO CIR
FLAXM
ILL DR
BROADWINSOR CRES
WIL
DC
ATP
KW
Y
BAR
TLETT
DR
WAT
ER
VIE
WC
IR
MID
DLE
OAKS
DR
PINE
S O
FW
ARR
ICK
DR
LON
GAV
E
GRENADIER DR
HILD
APIN
ED
R
DU
STY R
D
SANDY RD
JO ANNE CIR
HAR
TSW
OO
DTE
R
JODI
LYN
NTR
L
OLD
VIN
TAG
ER
D
WINDSOR RD
BENSON LN
CHU
RCH
ILL
DR
VICTO
RIA
DR
NORMAN WAY
CED
ARLAKES D
R
OLD
CEN
TER
VILL
ETP
KE
TWO
GATESCIR
HO
LLYG
ATE
LN
ROUT
E16
8RA
MP
DO
NN
ING
TON
DR
SHAD
OW
OO
DLN
MONTEVALE DR
FRESNO DR
CHANDLER DR
ASHFORTH WAY
SOUTHFIELD DR
SANDYHILL W
AY
SWEETBAY DRWATERFORD DR
ROYAL OAK DR
GREENFIELD LN
SPURLANE CIR
HERITAGE PT
DRURY LN
NIC
HO
LAS
CT
SPU
RLO
CK
WAY
CONSTANCE DR
CH
ELTI
NG
HAM
CT
HAW
KHU
RS
TD
R
BEACON HILL RD
INLET QUAY
UN
ION
FOR
GE
LN
RUFFIN RICKS ST
WINDLESHAM DR
HIGH POINT LN
CO
NQ
UE
STD
R
MIL
DE
NH
ALL
DR
GLOVERS CT
ROANO
KEARCH
WYM
ER
SC
T
CHRI
SCT
BRUTON CT
RATHW
ELLCT
MERIDIAN
DR
WAYNE AVE
HATTER
ASC
RES
HALLBRIDGE DR
DILLWYN DR
SYCAMORE LN
KINGSBRIDGE PL
FRANCONIA DR
TALLAHASSEEDR
COPELANDDR
PINE LEVEL LN
ARC
HER
DR
GLENDA CRES
HAWLEY CT
WO
OD
SMER
ER
D
STO
NELE
IGH
CT
LORI DR
REFUGE XING
MANTEO CT
MO
WBR
YC
T
HESTERDR
WATSON RD
KINGDOM WAY
WOODMONT DR
TYBO
UR
NE
CT
PIN
OAK
PL
NORTHFIELD ST
IVANHOECT
FARGOCT
WANCHESE CT
STERLING CT
DINWIDDIE CT
MEREDITH DR
GAMMON TRL
AVERY CT
ASTO
NPL
PON
TIA
CS
T
SEPTEMBER LN
BLAC
KTH
OR
NE
CT
LON
GPT
RIDGECREST PL
ETH
ERID
GE
RD
CHESAPEAKEEXPY
KEELING
DR
FAIRFIELD DR
CH
ESAPEAKEEXPY
SIGN PINE RD
OLD DR
UN
KNO
WN
WATERS RD
CHESAPEAKEEXPY
LAKEC
IR
CALUMET ST
! Existing NodesExisting Links
130,000
50-year Adtl. Flood Vol., cf10-year Flood Vol., cf
Figure C-3. Flooding for 10-Yr and 50-Yr Storms: Future Hydrology, Existing Drainage (Scenario 2) - SWMM 4
See GIS for Complete Details
0 2,500 5,000
Feet
±
Relative Volume
Node # 10-year 50-year Node # 10-year 50-year Node # 10-year 50-year123 28,000 62,000 379 29,000 59,000 615 - 22,000 129 - 18,000 417 - 17,000 625 - 25,000 149 184,000 348,000 421 10,000 25,000 631 - 12,000 169 - 68,000 425 - 60,000 635 15,000 55,000 227 - 45,000 431 21,000 168,000 791 - 44,000 231 25,000 113,000 453 - 16,000 841 - 73,000 243 30,000 69,000 465 - 61,000 853 25,000 276,000 251 - 63,000 477 - 38,000 869 33,000 65,000 259 - 22,000 499 24,000 161,000 907 86,000 151,000 297 60,000 194,000 511 - 13,000 935 - 80,000 313 23,000 75,000 513 18,000 71,000 945 - 145,000 315 97,000 185,000 559 191,000 391,000 959 15,000 42,000 317 - 22,000 563 - 17,000 961 - 16,000 357 - 36,000 589 70,000 230,000 989 - 14,000 367 - 18,000 611 - 59,000
Nodal Flooding Volumes for Existing Drainage / Future Hydrology, ft3
SWMM 4
Cooper's Ditch Watershed City of Chesapeake, Virginia
C-6 URS No. 11657815 October 2012
!
!!!
!
!!!
!!
!
!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!! !
!
!
!
!
!
!!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
! !
!!
!
!
!
!
!!!
!
!!!!
!!
!
!!
!
!
!!
!
!!
!
!!!!!
!
!
!!!
!!
!!!!!!
!
!
!
!
!
!
!!
!
!
!!!
!!
!
!
!
!
!!!
!!
!!!
!
!
!
!!
!
!
!
!!!
!
!!!
!
!!
!
!
!
!
!
! !!!
!!!
!!
!
!!
!!
!
!
!
!
!
! !
!
! !
!!
!
!
!
!
!
!!
!
!
!
!!
!!
!
!!
!
!
!!
!!
!!
!
!
!
!!
!!
!
!
!!
!
!
!!!
!
!
!! ! !! !
!
!
!!
!
!
!
!
!
!
!
!!
!! !
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ! !! !
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!!!
!!
!!
!
!
!
! !
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!!
!
!
!
! !!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
681
425
589631
243
841
453
499
989
367259
907
563
615 611
873
869
513
431427437
421
129
123
149
853317
315
169
357
297
251
227
959
625
477
465
791
935
945
559
635
511
419417
313
231
937
BATTLEFIELDBLVD
CEN
TER
VILL
ETP
KE
JOH
NST
OW
NR
D
CEDAR RD
TUC
KST
BENEFIT RD
HIL
LWE
LLR
D
PARKER RD
BATT
LEST
TRIN
KLE
ST
MOUNT PLEASANT RD
DAR
DEN
ST
BIN
FOR
DST
WATER
SR
D
CH
ESA
PEA
KE
EX
PY
FENTRESS RD
SIGN PINE RD
OLD DR
FEN
TRES
SLO
OP
GLORIA DR
PEACEFUL RD
HANBURY RD
WIL
LOW
OAK
DR
HICKORY RD
BACK RD
ETHERIDGE MANOR BLVD
MIL
LS
TON
ER
D
BEAVER DAM RD
BELLS MILL RD
HEAD OF RIVER RD
FOREST RD
JULE DR SYDENHAMBLV
D
REBEL RD
FORDSMERE RD
SHEA DR
SAINT BRIDESRD
ELAINE ST
MAN
ND
R
BRIARFIELDDR
BECKLEY
LN
HALL
DR
FOREST MILLS RD
WINFALL DR
FRANK DR
THISTLEY LN
EDIN
BUR
GH
PKW
Y
CADDIE ST
HOLLAND DR
BUTTERFLY DR
WAR
RIC
KR
D
BLACKTHORNE DR
HARW
ICH
DR
PAMLICO BLVD
BAY
DO
N L
N
MILLWOOD AVE
KEG
MA
N R
D
STADIU
MDR
ALLEN DR
BRA
ND
ER
MILL
DR
AMBROSE ST
CO
RAPEAKE
DR
CU
RR
ITUC
KD
R
ASHLEY RD
FAIRHAVEN RD
LUR
AYTE
R
MARION DR
WOODBRIDGE DR
HILLSIDE AVE
FLINTLOC
K RD
ARTHURS CT
WOODCOTT DR
NUGENT DR
BARTELL DR
RESERVATION RD
FERN
HAM
LN
UNSER DR
LYNETTE AVE
DOVE DR
RIVER GATE RD
LUID DR
WILLARD DR
MELO
NIE
DR
ERIKPAUL
DR
SIERRA DR
WARHAWKS RD
DOWNING DR
SABER DR
UN
KNO
WN
VANETTE DR
TIKI
WAY
KING
SBU
RY
DR
GWINIVERE ST
WILSO
ND
R
PRIN
CE
EDW
ARD
DR
BUTTS STATION RD
TROTTERS LN
MARSTON DR
CED
ARLN
EWELL LN
REDBAY
LN
CAR
AWAN
LN
LOCKS RD
ARCH RD
FAIRFIELD
DR
DO
CTO
REA
SON
RD
KEELING DR
HURDLE DR
CAR
AVEL
LED
R
LUTHER ST
DEW
ALDR
D
WATERWHEEL RD
CO
BBLE
SCO
TTW
AY
YORKSHIRE
TRL
RAVEN
WO
OD
SD
R
WOODARDS FORD RD
STARDALE DR
PACELS WAY
GR
EEN
WAY
DR
CH
ESA
PEA
KE
EX
PRES
SW
AYEX
PY
BEAUREGARD DR
GIL
ES
DR
HAVEN CIR
RU
THE
RFO
RD
DR
ALBEMARLE
DR
PRISCILLA LN
HABITAT XING
GREENGABLE WAY
HILLCREST PKWY
REDLEAFE CIR
GR
ANTH
AM L
N
CALEBDR
GLA
DES
DA
LE D
R
HIC
KORY
FOR
EST
DR
ANGUS RD
RAVENSTONE DR
AVON RD
GREAT BRIDGE BLVD
MEGGETT DR
REMINGTON
DR
MIL
LLA
NDIN
G R
D
LINKENBOROUGH DR
NEW
ZEAL
AND
REA
CH
CANTOR ST
FOXGATE QUARTER
LAKE CIR
CH
ALB
OU
RN
ED
R
WO
ODF
ORD
DR
PINE BARK DR
SUMMIT RIDGE DR
WATERFALL WAY
CLEARWATER LN
DRAUGHON RD
WA
RR
EN
AVE
CALLISON DR
DAR
BYR
UN
DR
ILEX ST
CAROL DR
EDNA ST
NAPLES
CT
AMIE DR
PLEASANT WAY
WELCH LN
ETHERIDGE RD
BELL
INGHAM
DR
MILL
RU
N
RAM
SG
ATELN
ABERDEEN LN
DUPONTST
CO
LON
YD
R
VILLA DR
BRITWELL DR
TILDEN AVE
ROBERT ST
STONEGATE PKWY
LAU
REL
RID
GE
LN
LIBR
ARY
DR
GLASGOW ST
HAN
BURY
CT
HAW
K BL
VD
WHISPER HOLLOW DR
KEMPSVILLE RD
WATER OAK CT
WE
SS
EX
DR
GRAYROCK
RD
BASIN
RD
CORBY GLEN AVE GRAVER LN
GLO
SSST
HODGES RD
GRANDY DR
VIN
EYAR
DD
R
JAM
AIC
AAV
E
STOCKLEYBRIDGE DR
WIC
KWO
OD
DR
WO
OD
YR
IDG
EC
T
GO
LDEN
MAP
LED
R
NORLINA DR
AVONLEA DR
HERI
TAG
E DR
TAXUS ST
DEN
HAM
ARC
H
WHITEHURST RD
BRIDGEVIEW CIR
FOR
DYC
ED
R
EDENBRIDGE DR
ALBEMAR
LEC
T
CATR
INA
LN
HELEN AVE
WHITE DOGWOOD DR
CALUMET ST
MARBLE ARCH
TREE FERN DR
MONTEBELLO CIR
FLAXM
ILL DR
BROADWINSOR CRES
WIL
DC
ATP
KW
Y
BAR
TLETT
DR
WAT
ER
VIE
WC
IR
MID
DLE
OAKS
DR
PINE
S O
FW
ARR
ICK
DR
LON
GAV
E
GRENADIER DR
HILD
APIN
ED
R
DU
STY R
D
SANDY RD
JO ANNE CIR
HAR
TSW
OO
DTE
R
JODI
LYN
NTR
L
OLD
VIN
TAG
ER
D
WINDSOR RD
BENSON LN
CHU
RCH
ILL
DR
VICTO
RIA
DR
NORMAN WAY
CED
ARLAKES D
R
OLD
CEN
TER
VILL
ETP
KE
TWO
GATESCIR
HO
LLYG
ATE
LN
ROUT
E16
8RA
MP
DO
NN
ING
TON
DR
MONTEVALE DR
FRESNO DR
CHANDLER DR
ASHFORTH WAY
SOUTHFIELD DR
SANDYHILL W
AY
SWEETBAY DRWATERFORD DR
ROYAL OAK DR
GREENFIELD LN
SPURLANE CIR
HERITAGE PT
DRURY LN
NIC
HO
LAS
CT
SPU
RLO
CK
WAY
CONSTANCE DR
CH
ELTI
NG
HAM
CT
HAW
KHU
RS
TD
R
BEACON HILL RD
INLET QUAY
UN
ION
FOR
GE
LN
RUFFIN RICKS ST
WINDLESHAM DR
HIGH POINT LN
CO
NQ
UE
STD
R
MIL
DE
NH
ALL
DR
GLOVERS CT
ROANO
KEARCH
WYM
ER
SC
T
CHRI
SCT
CHRISTA DR
BRUTON CT
RATHW
ELLCT
MERIDIAN
DR
WAYNE AVE
HATTER
ASC
RES
HALLBRIDGE DR
DILLWYN DR
SYCAMORE LN
KINGSBRIDGE PL
FRANCONIA DR
TALLAHASSEEDR
COPELANDDR
PINE LEVEL LN
ARC
HER
DR
GLENDA CRES
HAWLEY CT
WO
OD
SMER
ER
D
STO
NELE
IGH
CT
LORI DR
REFUGE XING
MANTEO CT
MO
WBR
YC
T
HESTERDR
WATSON RD
KINGDOM WAY
WOODMONT DR
PIN
OAK
PL
NORTHFIELD ST
IVANHOECT
FARGOCT
WANCHESE CT
STERLING CT
DINWIDDIE CT
MEREDITH DR
GAMMON TRL
AVERY CT
ASTO
NPL
SEPTEMBER LN
BLAC
KTH
OR
NE
CT
LON
GPT
RIDGECREST PL
OLD DR
FAIRFIELD DR
SIGN PINE RD
KEELING
DR
ETHERIDGE RD
CH
ESAPEAKEEXPY
CHESAPEAKEEXPY
WATERS RD
CHESAPEAKEEXPY
LAKEC
IR
CALUMET ST
! Existing NodesExisting Links
120,000
50-year Adtl. Flood Vol., cf10-year Flood Vol., cf
Figure C-4. Flooding for 10-Yr and 50-Yr Storms: Future Hydrology, Existing Drainage (Scenario 2) - SWMM 5
See GIS for Complete Details
0 2,500 5,000
Feet
±
Relative Volume
SWMM 5Node # 10-year 50-year Node # 10-year 50-year Node # 10-year 50-year
123 26,000 61,000 419 - 42,000 615 - 13,000 129 22,000 49,000 421 11,000 48,000 625 - 23,000 149 184,000 345,000 425 - 57,000 631 - 13,000 169 - 56,000 427 - 29,000 635 10,000 46,000 227 - 53,000 431 18,000 76,000 681 49,000 141,000231 22,000 83,000 437 - 29,000 791 - 41,000 243 30,000 69,000 453 - 16,000 841 - 65,000 251 - 56,000 465 - 61,000 853 15,000 257,000259 - 19,000 477 - 37,000 869 33,000 68,000 297 62,000 206,000 499 21,000 148,000 873 - 10,000 313 29,000 85,000 511 - 13,000 907 85,000 152,000315 110,000 224,000 513 17,000 84,000 935 - 46,000 317 - 22,000 559 153,000 287,000 937 - 34,000 357 - 34,000 563 - 15,000 945 - 55,000 367 - 23,000 589 47,000 188,000 959 - 38,000 417 - 40,000 611 - 46,000 989 - 15,000
Nodal Flooding Volumes for Existing Drainage / Future Hydrology, ft3
Cooper's Ditch Watershed City of Chesapeake, Virginia
C-7 URS No. 11657815 October 2012
!
!!!
!
!!!
!!
!
!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!! !
!
!
!
!
!
!!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
! !
!!
!
!
!
!
!!!
!
!!!!
!!
!
!!
!
!
!!
!
!!
!
!!!!!
!
!
!!!
!!
!!!!!!
!
!
!
!
!
!
!!
!
!
!!!
!!
!
!
!
!
!!!
!!
!!!
!
!
!
!!
!
!
!
!!!
!
!!!
!
!!
!
!
!
!
!
! !!!
!!!
!!
!
!!
!!
!
!
!
!
!
! !
!
! !
!!
!
!
!
!
!
!!
!
!
!
!!
!!
!
!!
!
!
!!
!!
!!
!
!
!
!!
!!
!
!
!!
!
!
!!!
!
!
!! ! !! !
!
!
!!
!
!
!
!
!
!
!
!!
!! !
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ! !! !
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!!!
!!
!!
!
!
!
! !
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!!
!
!
!
! !!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
151
129
379
425
631
243
841
453
499
561
989
259
907
563
615 611
869
513
431421
123
853317
315
169
357
297
251
227
959961
625
477
465
755
791
947
559
367
635
511
417
313
231
JOH
NST
OW
NR
D
CEN
TERV
ILLE
TPKE
RO
UTE
168
EXPY
Waters
Rd
CEDAR RD
BENEFIT RD
EdinburghPkw
y
PARKER RD
Hillcrest Pkwy
Pleasant Grove Pkwy
CHESAPEAKEEXPY
BATTLEFIELDBLVD
Southeastern Pkwy
MOUNT PLEASANT RD
WATER
SR
D
HANBURY RD
ETHERIDGE MANOR BLVD
HICKORY RD
HEAD OF RIVER RD
EDIN
BUR
GH
PKW
Y
Elbow Rd
Proposed Waters Extension Rd
BUTTS STATION RD
GREAT BRIDGE BLVD
Proposed Parker Extension
CEN
TERV
ILLETPKE
CH
ESAPEAKEEXPY
CHESAPEAKEEXPY
RO
UTE
168
EXPY
Edin
burg
hPk
wyBATTLEFIELD
BLVD
CEN
TER
VILL
ETP
KE
JOH
NST
OW
NR
D
CEDAR RD
TUC
KST
BENEFIT RD
HIL
LWE
LLR
D
PARKER RD
BATT
LEST
TRIN
KLE
STMOUNT PLE
ASANT RD
DAR
DEN
ST
BIN
FOR
DST
WATE
RS
RD
CH
ESA
PEA
KE
EX
PY
FENTRESS RD
SIGN PINE RD
OLD DR
FEN
TRES
SLO
OP
GLORIA DR
PEACEFUL RD
HANBURY RD
WIL
LOW
OAK
DR
HICKORY RD
BACK RD
MIL
LS
TON
ER
D
BEAVER DAM RD
BELLS MILL RD
HEAD OF RIVER RD
FOREST RD
JULE DR
SYDENHAM BLVD
REBEL RD
FORDSMERE RD
SHEA DR
SAINT BRIDESRD
ELAINE ST
MAN
ND
R
BRIARFIELDDR
BECKLEY
LN
HALL
DR
FOREST MILLS RD
WINFALL DR
FRANK DR
THISTLEY LN
EDIN
BU
RG
HPK
WYCADDIE ST
HOLLAND DR
BUTTERFLY DR
WAR
RIC
KR
D
BLACKTHORNE DR
HARW
ICH
DR
PAMLICO BLVD
BAY
DO
N L
N
MILLWOOD AVE
KEG
MA
N R
D
STADIU
MDR
ALLEN DR
BRA
ND
ER
MILL
DR
AMBROSE ST
CO
RAPEAKE
DR
CU
RR
ITUC
KD
R
ASHLEY RD
FAIRHAVEN RD
LURAY TER
MARION DR
WOODBRIDGE DR
HILLSIDE AVE
FLINTLOC
K RD
ARTHURS CT
WOODCOTT DR
NUGENT DR
BARTELL DR
RESERVATION RD
FER
NH
AMLN
UNSER DR
LYNETTE AVE
DOVE DR
RIVER GATE RD
LUID DR
WILLARD DR
MELO
NIE
DR
ERIKPAUL
DR
SIERRA DR
WARHAWKS RD
DOWNING DR
SABER DR
UN
KN
OW
N
VANETTE DR
TIKI
WAY
KING
SBU
RY
DR
GWINIVERE ST
WILSO
ND
R
PRIN
CE
EDW
ARD
DR
TROTTERS LN
CED
ARLN
EWELL LN
REDBAY
LN
CAR
AWAN
LN
LOCKS RD
ARCH RD
FAIRFIELD
DR
DO
CTO
REA
SON
RD
KEELING DR
HURDLE DR
CAR
AVEL
LED
R
LUTHER ST
DEW
ALDR
D
WATERWHEEL RD
CO
BBLE
SCO
TTW
AY
YORKSHIRE
TRL
RAVEN
WO
OD
SD
R
WOODARDS FORD RD
STARDALE DR
PACELS WAY
GR
EEN
WAY
DR
BEAUREGARD DR
GIL
ES
DR
HAVEN CIR
RU
THER
FOR
DD
R
ALBEMARLE
DR
PRISCILLA LN
HABITAT XING
GREENGABLE WAY
HILLCREST PKWY
REDLEAFE CIR
GR
ANTH
AM L
N
CALEBDR
GLA
DES
DA
LE D
R
HIC
KORY
FOR
EST
DR
ANGUS RD
RAVENSTONE DR
AVON RD
MEGGETT DR
REMINGTON
DR
MILL LANDINGRD
LINKENBOROUGH DR
NEW
ZEAL
AND
REA
CH
CANTOR ST
FOXGATE QUARTER
LAKE CIR
CH
ALB
OU
RN
ED
R
WO
ODF
ORD
DR
PINE BARK DR
SUMMIT RIDGE DR
WATERFALL WAY
CLEARWATER LN
DRAUGHON RD
WA
RR
EN
AVE
CALLISON DR
DAR
BYR
UN
DR
ILEX ST
CAROL DR
EDNA ST
NAPLES
CT
AMIE DR
PLEASANT WAY
WELCH LN
ETHERIDGE RD
BELL
INGHAM
DR
MILL
RU
N
RAM
SG
ATELN
ABERDEEN LN
DUPONTST
CO
LON
YD
R
VILLA DR
BRITWELL DR
TILDEN AVE
ROBERT ST
STONEGATE PKWY
LAU
REL
RID
GE
LN
LIBR
ARY
DR
GLASGOW ST
HAN
BURY
CT
HAW
K BL
VD
WHISPER HOLLOW DR
KEMPSVILLE RD
WATER OAK CT
WE
SS
EX
DR
GRAYROCK
RD
BASIN
RD
CORBY GLEN AVE GRAVER LN
GLO
SSST
HODGES RD
GRANDY DR
VIN
EYAR
DD
R
JAM
AIC
AAV
EWIC
KWO
OD
DR
WO
OD
YR
IDG
EC
T
GO
LDEN
MAP
LED
R
NORLINA DR
AVONLEA DR
HERI
TAG
E DR
TAXUS ST
DEN
HAM
ARC
H
BRIDGEVIEW CIR
FOR
DYC
ED
R
EDENBRIDGE DR
ALBEMAR
LEC
T
CATR
INA
LN
HELEN AVE
WHITE DOGWOOD DR
CALUMET ST
MARBLE ARCH
TREE FERN DR
MONTEBELLO CIR
FLAXM
ILL DR
BROADWINSOR CRES
WIL
DC
ATP
KW
Y
BAR
TLETT
DR
WAT
ER
VIE
WC
IR
MID
DLE
OAKS
DR
PINE
S O
FW
ARR
ICK
DR
LON
GAV
E
GRENADIER DR
HILD
APIN
ED
R
DU
STY R
D
SANDY RD
JO ANNE CIR
HAR
TSW
OO
DTE
R
OLD
VIN
TAG
ER
D
WINDSOR RD
BENSON LN
CHU
RCH
ILL
DR
VICTO
RIA
DR
NORMAN WAY
CED
ARLAKES D
R
OLD
CEN
TER
VILL
ETP
KE
TWO
GATESCIR
HO
LLYG
ATE
LN
ROUT
E16
8RA
MP
DO
NN
ING
TON
DR
SHAD
OW
OO
DLN
MONTEVALE DR
FRESN
OD
R
CHANDLER DR
ASHFORTH WAY
SOUTHFIELD DR
SANDYHILL W
AY
SWEETBAY DR
ROYAL OAK DR
GREENFIELD LN
SPURLANE CIR
HERITAGE PT
DRURY LN
NIC
HO
LAS
CT
SPU
RLO
CK
WAY
CONSTANCE DR
CH
ELTI
NG
HAM
CT
HAW
KHU
RS
TD
R
BEACON HILL RD
INLET QUAY
UN
ION
FOR
GE
LN
RUFFIN RICKS ST
HIGH POINT LN
CO
NQ
UE
STD
R
MIL
DE
NH
ALL
DR
ROANO
KEARCH
CHRI
SCT
BRUTON CT
RATHW
ELLCT
WAYNE AVE
HATTER
ASC
RES
HALLBRIDGE DR
DILLWYN DR
SYCAMORE LN
FRANCONIA DR
TALLAHASSEEDR
COPELANDDR
PINE LEVEL LN
ARC
HER
DR
GLENDA CRES
HAWLEY CT
WO
OD
SMER
ER
D
STO
NELE
IGH
CT
LORI DR
REFUGE XING
MANTEO CT
MO
WBR
YC
T
HESTERDR
WATSON RD
KINGDOM WAY
WOODMONT DR
TYBO
UR
NE
CT
PIN
OAK
PL
NORTHFIELD ST
FARGOCT
STERLING CT
DINWIDDIE CT
GAMMON TRL
AVERY CT
ASTO
NPL
PON
TIA
CS
T
SEPTEMBER LN
BLAC
KTH
OR
NE
CT
LON
GPT
RIDGECREST PL
KEELING
DR
CH
ESA
PEAK
EE
XPY
CH
ESA
PE
AK
EE
XPY
LAKEC
IR
CALUMET ST
KEGMAN RD
FAIRFIELD DR
ETH
ERID
GE
RD
WATERS RD
CHESAPEAKEEXPY
UN
KNO
WN
! Future NodesFuture Links74,00050-year Adtl. Flood Vol., cf10-year Flood Vol., cf
Figure C-5. Flooding for 10-Yr and 50-Yr Storms: Future Hydrology, Future Drainage (Scenario 3) - SWMM 4
See GIS for Complete Details
0 2,500 5,000
Feet
±
Relative Volume
SWMM 4Node # 10-year 50-year Node # 10-year 50-year Node # 10-year 50-year
123 29000 61000 379 34000 58000 615 0 21000129 0 17000 417 0 17000 625 0 25000151 0 29000 421 10000 25000 631 0 11000169 0 68000 425 0 60000 635 15000 56000227 0 45000 431 21000 168000 755 0 60000231 25000 113000 453 0 16000 791 0 44000243 30000 69000 465 0 61000 841 0 10000251 0 65000 477 0 38000 853 0 73000259 0 22000 499 24000 161000 869 33000 65000297 60000 194000 511 0 13000 907 82000 145000313 23000 75000 513 18000 71000 947 0 11000315 97000 185000 559 0 80000 959 15000 42000317 0 22000 561 0 17000 961 0 16000357 0 36000 563 0 14000 989 0 13000367 0 18000 611 0 57000
Nodal Flooding Volumes for Future Drainage / Future Hydrology, ft3
Cooper's Ditch Watershed City of Chesapeake, Virginia
C-8 URS No. 11657815 October 2012
!
!!!
!
!!!
!!
!
!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!! !
!
!
!
!
!
!!
!
!!
!
!
!
!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
! !
!!
!
!
!
!
!!!
!
!!!!
!!
!
!!
!
!
!!
!
!!
!
!!!!!
!
!
!!!
!!
!!!!!!
!
!
!
!
!
!
!!
!
!
!!!
!!
!
!
!
!
!!!
!!
!!!
!
!
!
!!
!
!
!
!!!
!
!!!
!
!!
!
!
!
!
!
! !!!
!!!
!!
!
!!
!!
!
!
!
!
!
! !
!
! !
!!
!
!
!
!
!
!!
!
!
!
!!
!!
!
!!
!
!
!!
!!
!!
!
!
!
!!
!!
!
!
!!
!
!
!!!
!
!
!! ! !! !
!
!
!!
!
!
!
!
!
!
!
!!
!! !
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ! !! !
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!!!
!!
!!
!
!
!
! !
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!!
!
!
!
! !!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
425
631
243
453
499
559
989
367259
907
615 611
873
869
513
431427437
421
129
123
853317
315
169171
151
357
297
251
227
959
625
477
465
791
635
511
419417
313
231
JOH
NST
OW
NR
D
CEN
TERV
ILLE
TPKE
RO
UTE
168
EXPY
Waters
Rd
CEDAR RD
BENEFIT RD
EdinburghPkw
y
PARKER RD
Hillcrest Pkwy
Pleasant Grove Pkwy
CHESAPEAKEEXPY
BATTLEFIELDBLVD
Southeastern Pkwy
MOUNT PLEASANT RD
WATER
SR
D
HANBURY RD
ETHERIDGE MANOR BLVD
HICKORY RD
HEAD OF RIVER RD
EDIN
BUR
GH
PKW
Y
Elbow Rd
Proposed Waters Extension Rd
BUTTS STATION RD
GREAT BRIDGE BLVD
Proposed Parker Extension
CEN
TERV
ILLETPKE
CH
ESAPEAKEEXPY
CHESAPEAKEEXPY
RO
UTE
168
EXPY
Edin
burg
hPk
wyBATTLEFIELD
BLVD
CEN
TER
VILL
ETP
KE
JOH
NST
OW
NR
D
CEDAR RD
TUC
KST
BENEFIT RD
HIL
LWE
LLR
D
PARKER RD
BATT
LEST
TRIN
KLE
STMOUNT PLE
ASANT RD
DAR
DEN
ST
BIN
FOR
DST
WATE
RS
RD
CH
ESA
PEA
KE
EX
PY
FENTRESS RD
SIGN PINE RD
OLD DR
FEN
TRES
SLO
OP
GLORIA DR
PEACEFUL RD
HANBURY RD
WIL
LOW
OAK
DR
HICKORY RD
BACK RD
MIL
LS
TON
ER
D
BEAVER DAM RD
BELLS MILL RD
HEAD OF RIVER RD
FOREST RD
JULE DR
SYDENHAM BLVD
REBEL RD
FORDSMERE RD
SHEA DR
SAINT BRIDESRD
ELAINE ST
MAN
ND
R
BRIARFIELDDR
BECKLEY
LN
HALL
DR
FOREST MILLS RD
WINFALL DR
FRANK DR
THISTLEY LN
EDIN
BU
RG
HPK
WYCADDIE ST
HOLLAND DR
BUTTERFLY DR
WAR
RIC
KR
D
BLACKTHORNE DR
HARW
ICH
DR
PAMLICO BLVD
BAY
DO
N L
N
MILLWOOD AVE
KEG
MA
N R
D
STADIU
MDR
ALLEN DR
BRA
ND
ER
MILL
DR
AMBROSE ST
CO
RAPEAKE
DR
CU
RR
ITUC
KD
R
ASHLEY RD
FAIRHAVEN RD
LURAY TER
MARION DR
WOODBRIDGE DR
HILLSIDE AVE
FLINTLOC
K RD
ARTHURS CT
WOODCOTT DR
NUGENT DR
BARTELL DR
RESERVATION RD
FER
NH
AMLN
UNSER DR
LYNETTE AVE
DOVE DR
RIVER GATE RD
LUID DR
WILLARD DR
MELO
NIE
DR
ERIKPAUL
DR
SIERRA DR
WARHAWKS RD
DOWNING DR
SABER DR
UN
KN
OW
N
VANETTE DR
TIKI
WAY
KING
SBU
RY
DR
GWINIVERE ST
WILSO
ND
R
PRIN
CE
EDW
ARD
DR
TROTTERS LN
CED
ARLN
EWELL LN
REDBAY
LN
CAR
AWAN
LN
LOCKS RD
ARCH RD
FAIRFIELD
DR
DO
CTO
REA
SON
RD
KEELING DR
HURDLE DR
CAR
AVEL
LED
R
LUTHER ST
DEW
ALDR
D
WATERWHEEL RD
CO
BBLE
SCO
TTW
AY
YORKSHIRE
TRL
RAVEN
WO
OD
SD
R
WOODARDS FORD RD
STARDALE DR
PACELS WAY
GR
EEN
WAY
DR
BEAUREGARD DR
GIL
ES
DR
HAVEN CIR
RU
THE
RFO
RD
DR
ALBEMARLE
DR
PRISCILLA LN
HABITAT XING
GREENGABLE WAY
HILLCREST PKWY
REDLEAFE CIR
GR
ANTH
AM L
N
CALEBDR
GLA
DES
DA
LE D
R
HIC
KORY
FOR
EST
DR
ANGUS RD
RAVENSTONE DR
AVON RD
MEGGETT DR
REMINGTON
DR
MILL LANDINGRD
LINKENBOROUGH DR
NEW
ZEAL
AND
REA
CH
CANTOR ST
FOXGATE QUARTER
LAKE CIR
CH
ALB
OU
RN
ED
R
WO
ODF
ORD
DR
PINE BARK DR
SUMMIT RIDGE DR
WATERFALL WAY
CLEARWATER LN
DRAUGHON RD
WA
RR
EN
AVE
CALLISON DR
DAR
BYR
UN
DR
ILEX ST
CAROL DR
EDNA ST
NAPLES
CT
AMIE DR
PLEASANT WAY
WELCH LN
ETHERIDGE RD
BELL
INGHAM
DR
MILL
RU
N
RAM
SG
ATELN
ABERDEEN LN
DUPONTST
CO
LON
YD
R
VILLA DR
BRITWELL DR
TILDEN AVE
ROBERT ST
STONEGATE PKWY
LAU
REL
RID
GE
LN
LIBR
ARY
DR
GLASGOW ST
HAN
BURY
CT
HAW
K BL
VD
WHISPER HOLLOW DR
KEMPSVILLE RD
WATER OAK CT
WE
SS
EX
DR
GRAYROCK
RD
BASIN
RD
CORBY GLEN AVE GRAVER LN
GLO
SSST
HODGES RD
GRANDY DR
VIN
EYAR
DD
R
JAM
AIC
AAV
E
STOCKLEYBRIDGE DR
WIC
KWO
OD
DR
WO
OD
YR
IDG
EC
T
GO
LDEN
MAP
LED
R
NORLINA DR
AVONLEA DR
HERI
TAG
E DR
TAXUS ST
DEN
HAM
ARC
H
WHITEHURST RD
BRIDGEVIEW CIR
FOR
DYC
ED
R
EDENBRIDGE DR
ALBEMAR
LEC
T
CATR
INA
LN
HELEN AVE
WHITE DOGWOOD DR
CALUMET ST
MARBLE ARCH
TREE FERN DR
MONTEBELLO CIR
FLAXM
ILL DR
WORM
INGTO
NDR
BROADWINSOR CRES
WIL
DC
ATP
KW
Y
BAR
TLETT
DR
WAT
ER
VIE
WC
IR
MID
DLE
OAKS
DR
PINE
S O
FW
ARR
ICK
DR
LON
GAV
E
GRENADIER D
R
HILD
APIN
ED
R
DU
STY R
D
SANDY RD
JO ANNE CIR
HAR
TSW
OO
DTE
R
OLD
VIN
TAG
ER
D
WINDSOR RD
BENSON LN
CHU
RCH
ILL
DR
VICTO
RIA
DR
NORMAN WAY
CED
ARLAKES D
R
OLD
CEN
TER
VILL
ETP
KE
TWO
GATESCIR
HO
LLYG
ATE
LN
ROUT
E16
8RA
MP
DO
NN
ING
TON
DR
PEACHTREE DR
MONTEVALE DR
FRESN
OD
R
CHANDLER DR
ASHFORTH WAY
SOUTHFIELD DR
SANDYHILL W
AY
SWEETBAY DR
ROYAL OAK DR
GREENFIELD LN
SPURLANE CIR
HERITAGE PT
DRURY LN
NIC
HO
LAS
CT
SPU
RLO
CK
WAY
CONSTANCE DR
CH
ELTI
NG
HAM
CT
HAW
KHU
RS
TD
R
BEACON HILL RD
INLET QUAY
UN
ION
FOR
GE
LN
RUFFIN RICKS ST
WINDLESHAM DR
HIGH POINT LN
CO
NQ
UE
STD
R
MIL
DE
NH
ALL
DR
ROANO
KEARCH
WYM
ER
SC
T
CHRI
SCT
CHRISTA DR
BRUTON CT
RATHW
ELLCT
WAYNE AVE
HATTER
ASC
RES
HALLBRIDGE DR
DILLWYN DR
SYCAMORE LN
FRANCONIA DR
TALLAHASSEEDR
COPELANDDR
PINE LEVEL LN
ARC
HER
DR
GLENDA CRES
HAWLEY CT
WO
OD
SMER
ER
D
STO
NELE
IGH
CT
LORI DR
REFUGE XING
MANTEO CT
MO
WBR
YC
T
HESTERDR
WATSON RD
KINGDOM WAY
WOODMONT DR
PIN
OAK
PL
NORTHFIELD ST
FARGOCT
STERLING CT
DINWIDDIE CT
GAMMON TRL
AVERY CT
ASTO
NPL
SEPTEMBER LN
BLAC
KTH
OR
NE
CT
LON
GPT
RIDGECREST PL
KEELING
DR
CH
ESA
PEAK
EE
XPY
CH
ESA
PE
AK
EE
XPY
LAKEC
IR
CALUMET ST
KEGMAN RD
HILLW
ELL RD
FAIRFIELD DR
ETHERIDGE RD
WATERS RD
CHESAPEAKEEXPY
UN
KNO
WN
! Future NodesFuture Links68,00050-year Adtl. Flood Vol., cf10-year Flood Vol., cf
Figure C-6. Flooding for 10-Yr and 50-Yr Storms: Future Hydrology, Future Drainage (Scenario 3) - SWMM 5
See GIS for Complete Details
0 2,500 5,000
Feet
±
Relative Volume
SWMM 5Node # 10-year 50-year Node # 10-year 50-year Node # 10-year 50-year
123 26,000 61,000 357 - 34,000 513 15,000 82,000 129 22,000 48,000 367 - 23,000 559 - 92,000 151 - 22,000 417 - 40,000 611 - 46,000 169 - 46,000 419 - 42,000 615 - 13,000 171 - 40,000 421 11,000 48,000 625 - 23,000 227 - 53,000 425 - 57,000 631 - 14,000 231 22,000 83,000 427 - 29,000 635 12,000 47,000 243 30,000 69,000 431 18,000 76,000 791 - 41,000 251 - 116,000 437 - 29,000 853 - 65,000 259 - 22,000 453 - 16,000 869 33,000 68,000 297 61,000 196,000 465 - 61,000 873 - 10,000 313 29,000 85,000 477 - 37,000 907 81,000 145,000 315 110,000 224,000 499 21,000 148,000 959 - 38,000 317 - 22,000 511 - 13,000 989 - 15,000
Nodal Flooding Volumes for Future Drainage / Future Hydrology, ft3
Cooper's Ditch Watershed City of Chesapeake, Virginia
C-9 URS No. 11657815 October 2012