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AKRF Environmental Planners was retained by Westchester County to analyze watershed characteristics and propose flood mitigation measures for five sub watersheds throughout the county. This involved the analysis of watershed soil types, permeability ratings, stream connectivity and flow loads, as well as the design of appropriate storm water management designs. Assembled with Arc GIS by Eymund Diegel.
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BR
ON
X R
IVER
LAUREL BROOK
GRASSY SPRAIN
BROOK
TROUBLESOME BROOKBR
ONX
RIVE
R
STAT
E HW
Y 22
MID
LAND
AVE
MAIN S
T
STAT
E H
WY
BR
ON
X R
IVER
PK
WY
PONDFIELD RD
SAGA
MOR
E RD
COLU
MBU
S AV
E
GRA
MAT
AN A
VE
FISHER AVE
HIGHLAND AVE
TUCKAHOE RD
NEW ROCHELLE RD
YONKERS AVE
MILL RD
PALMER AVE
WINTER HILL RD
CALIFORNIA
RD
SCARSDALE RD
STATE HWY SPRAIN BROOK PKWY
STATE HWY CROSS COUNTY HWY PKW
CROS
S CO
UNTY
HW
Y PK
WY
MIDLAND AVE
Uf
UpBUf
Uc
Ff
UlD
UlC
UpB
UlC
UlC
UpB
UlC
UpC
UlC
Uf
Uf
UbUpB
UlDUmC
UlC
UlC
UwB
UlD
UpB
Ub
UwB
CrC
Uf
UlD
UwB
UpB
UvB
UpC
Uc
UpC
W
UlC
UhB
UpD
UlD
Uc
RhA
CrC
W
UpB
UwB
UpC
UlD
Uc
Ub
Ub
CsD
LcB
UvC
UwB
UlC
UlC
CsD
UrBUlD
UvC
Ff
Uc
UpC
UwB
CrC
UlC
UlD
Ub
UvC
UrBUwB
CsD
UpB
CsD
UwB
CsD
UpC
CsD
UwB
Uc
UwB
UlD
UwB
UlC
UvB
Ub
UwB
UlD
UpC
UrB
LcB
W
Ub
UpC
UlC
UpB
UrB
Ff
UvC
UrB
Uf
ChB
Yonkers
Bronxville
Tuckahoe
Eastchester
Mount Vernon
Figure 3
Legend
Stream Level Watershed
Scout Field Park Site
Impervious road or building
Westchester County Mapped Outfalls
0 500 1,000Feet
Contributary Drainage Map
Aerial Source - Microsoft Virtual Earth 2009
Soil Type
Carlisle muck
Charlton loam, 15 to 25 percent slopes
Charlton loam, 2 to 8 percent slopes
Charlton loam, 25 to 35 percent slopes
Charlton loam, 8 to 15 percent slopes
Charlton-Chatfield complex, rolling, very rocky
Chatfield-Charlton complex, hilly, very rocky
Chatfield-Hollis-Rock outcrop complex, hilly
Chatfield-Hollis-Rock outcrop complex, rolling
Fluvaquents-Udifluvents complex, frequently flooded
Hollis-Rock outcrop complex, very steep
Leicester loam, 3 to 8 percent slopes, stony
Palms and Carlisle soils, ponded
Palms muck
Paxton fine sandy loam, 2 to 8 percent slopes
Raynham silt loam
Ridgebury loam, 3 to 8 percent slopes
Riverhead loam, 0 to 3 percent slopes
Riverhead loam, 3 to 8 percent slopes
Sun loam
Sutton loam, 0 to 3 percent slopes
Sutton loam, 3 to 8 percent slopes
Udorthents, smoothed
Udorthents, wet substratum
Urban land
Urban land-Charlton complex, 2 to 8 percent slopes
Urban land-Charlton complex, 8 to 15 percent slopes
Urban land-Charlton-Chatfield complex, hilly, very rocky
Urban land-Charlton-Chatfield complex, rolling, very rocky
Urban land-Chatfield-Rock outcrop complex, rolling
Urban land-Paxton complex, 15 to 25 percent slopes
Urban land-Paxton complex, 2 to 8 percent slopes
Urban land-Paxton complex, 8 to 15 percent slopes
Urban land-Ridgebury complex, 1 to 8 percent slopes
Urban land-Riverhead complex, 2 to 8 percent slopes
Urban land-Riverhead complex, 8 to 15 percent slopes
Urban land-Woodbridge complex, 2 to 8 percent slopes
Water
Woodbridge loam, 3 to 8 percent slopes
WESTCHESTER COUNTY DPW - FLOOD MITIGATION
10-2
3-20
09
