HomeMy WebLinkAboutParcel Map 17288 Parcel 3 & 4 Hydrology & Hydraulics
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HYDROLOGY AND HYDRAULIC CALCS.
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DESIGN RUNOFF
METHOD OF COMPUTING RUNOFF
Used rational method per Riverside County Flood Control
and Water Conservation District Hydrology Manual.
Q = CIA
WHERE :
Q = Peak Discharge (CFS.)
C = Coefficient Of Runoff
I = Rainfall Intensity (in/hr.) - Corresponding
to Time of Concentration
A = Area (Acres)
10 Year and 100 Year Frequency was calculated
Collection areas are located so as to conform.to Riverside
County Road Department criteria. QIO must. not peak higher
than the top of the curb. QIOO must not peak higher than
R/W elevation.
AUG 9 2001
CITY OF TEMECULA
ENGINEERING DEPARTMENT
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1000
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LIMITATIONS:
,
I. Maximum lonoth = 1000
2. Maximum orca = 10 Acres
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KEY
L --H-Tc-K-Tc'
EXAMPLI;::
(I) L =550', H =5.0', K = SinQIe Family(I/4 Ac.) 35
Dovolopmont , Tc = 12.6 min.
(2) L =550', H =5.0', K = Commarcial .
Dovelopment , Tc = 9.7 min.
4
Reference: Oiblio~rophy item No. 35.
RCFC e WeD
HYDROLOGY ~JJANUAL
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TIME OF CONCENTRATION
FOR INITIAL SUBAREA
PLATE D-3
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INTENSITY - DURATION
CURVES DATA
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II , I I I I r I , I I , I illll I n I'
RUNOFF COEFFICIENT CURVES
SOIL GROUP-B
COVER TYPE URBAN LANDSCAPING
AMC-II
(RUNOFF INDEX NUMBER 56)
.2
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RAINFALL
INTENSITY IN INCHES PER HOUR'
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