HomeMy WebLinkAboutParcel Map 31751 Parcel 2 Hydrology Report
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ENGINEERING, INC.
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317 S/
CONSTRUCTION TESTING & ENGINEERING, INC.
SAN DIEGO, CA RIVERSIDE, CA VENTURA, CA
2414 Vineyard Ave. 490 E. Princeland Ct. 1645 PaclficAve.
Suite G Suite 7 Suite 105
Escondido, CA 92029 Corona, CA 91719 Oxnard, CA 93033
(760)746-4955 (909)371-1890 (805)486-6475
(760) 746-9806 FAX (909) 371-2168 FAX (805) 486-9016 FAX
TRACY, CA
242W.Larch
SuiteF
Tracy, CA 95376
(209)839-2890
(209) 839-2895 FAX
Hydrology Study
T emecula Highlands
Tentative Parcel Map No. 31751
Temecula, California
Prepared For:
The Garrett Group, L.L.C.
43529 Ridge Park Drive
Temecula, CA 92590
Prepared By:
Construction Testing & Engineering, Inc.
2414 Vineyard Avenue, Suite G
Escondido, CA 92029
CTE Job No. 10-6418
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LANCASTER, CA
42156 10th St. W.
Unitk
Lancaster, CA 93534
(661)726-9676
(661) 72tM1246 FAX
SACRAMEl'qO, CA N. PALM SPRINGS, CA
3628 Madiso;J Ave. 19020 N. Indian Ave.
Suite 22 Suitel-K
N. Highlands, CA 95660 N. Palm Springs, CA 92258
(916) 331-6010 (760)321).4677
(916) 331-<i0:7I"AX (760) 328-4896 FAX
November 21,2003
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GEOTECHNICAL. ErrVIRONMENTAL. CONSTRUCTION INSPECTION AND TESTING. CIVIL ENGINEERING. SURVEYING
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TABLE OF CONTENTS
Section
OBJECTIVE
ASSUMPTIONS
INTRODUCTION
DISCUSSION
RATIONAL METHOD CALCULATIONS
ATTACHMENTS
ATTACHMENT I - HYDROLOGY MAP - DEVELOPED CONDITION
A TT ACHMENT 2 - HYDROLOGY MAP - EXISTING CONDITIONS
ATTACHMENT 3 - HYDROLOGIC SOILS GROUP MAP F'OR MURRIETA
ATTACHMENT 4 - VARIOUS CHARTS & GRAPHS FOR BASIN A
A TT ACHMENT 5 - VARIOUS CHARTS & GRAPHS FOR BASIN B
A TT ACHMENT 6 -VARIOUS CHARTS & GRAPHS FOR EXISTING BASIN IE
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Hydrology Study
Tentative Parcel Map No. 31751
Temecula, California
November 21, 2003
OBJECTIVE
To calculate 100-year flows and to size the drainage pipes for Tentative Parcel Map No. 31751,
Temecula Highlands, located in Temecula, California.
ASSUMPTIONS
1. Flow calculations per Riverside County Flood Control and Water Conservation District's
Hydrology Manual (April 1978).
2. n = 0.015 for RCP pipes.
INTRODUCTION
The site is located just east of the Interstate 15 County Center Drive in Temecula, California.
The project site is approximately 5.7 acres in size. The site currently contains a single
commercial building. The proposed development is to construct ,m additional commercial
building on the site.
DISCUSSION
The site is located on an existing gentle slope. The existing site Hows to the southeastern edge of
the site via ribbon gutters and curb and gutters (see Existing Hydrology Map - Attachment 2).
The existing site discharges into County Center Drive via curb underdrains located at both
corners of the property. The developed site would connect directly into the existing storm drain
system in County Center Drive at approximately the same locations as the curb underdrains
discussed above (see Developed Hydrology Map - Attachment 1).
The pipe designations can be found on the hydrology map located in Attachment 1. Manning's
calculations can be found in Attachments 4 and 5.
C:\SDSK\PROJ\1O-641 8\H,drology Study.doc
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RATIONAL METHOD CALCULATIONS
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ATTACHMENT 1
HYDROLOGY MAP - DEVELOPED CONDITION
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A IT ACHMENT 2
HYDROLOGY MAP - EXISTING CONDITION
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A IT ACHMENT 3
HYDROLOGIC SOILS GROUP MAP FOR MURRIETA
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I LEGEND ~ HYDROLOGIC SOILS GROUP MAP
SOILS GROUP BOUNOARY FOR
A SOILS GROUP OESIGNATION
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HYDROLOGY ~/IANUAL ~~ 0..
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A IT ACHMENT 4
VARIOUS CHARTS & GRAPHS FOR BASIN A
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LIMITATIONS:
I. Maximum length = 1000'
2. Maximum area = 10 Acres
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EXAMPLE:
(I) L =550', H =5.0', K = Single Family(l/4 Ac.) 35
Development, Tc = 12..6 min.
(2) L =550', H =5.0', K=Comm.rcial
Development, Tc = 9.7 inin.
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BASIN A-I RIBBON GUTTER
Channel calculator
Given Input Data:
shape ...........................
So 1 vi ng fo r .....................
Flowrate ........................
slope ...........................
Manni ng' s n .....................
Hei ght ..........................
Bottom wi dth ....................
left slope ......................
Right slope .....................
computed Results:
Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ve 1 OC1 ty ........................
Flow area .......................
Flow perimeter ..................
Hydraulic radius ................
TOp wi dth .......................
Area........................... .
Peri meter .......................
Percent full....................
Critical Information
Critical depth ..................
critical slope ..................
critical velocity...............
Critical area ...................
Critical perimeter .... ..........
Critical hydraulic radius .......
Critical top width ..............
specific energy.................
Minimum energy..................
Froude number .... ...............
Flow condition ..................
tmp#l
Trapezoi da 1
Depth of Flow
8.7700 cfs
0.0042 ft/ft
0.0150
6.0000 in
0.0000 in
0.0200 ft/ft
0.0200 ft/ft
3.6995 in
1.8455 fps
4.7521 ft2
370.0210 in
1.8494 in
369.9470 in
12.5000 ft2
600.1200 in
61. 6578 %
3.4316 in
0.0063 ft/ft
2.1448 fps
4.0889 ft2
343.2297 in
1.7155 in
343.1611 in
0.3612 ft
0.4290 ft
0.8287
subcritical
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CONCRETE CURB & GUTTER
BASIN A-2
Channel calculator
Given Input Data:
shape ...........................
Solving for .....................
Flowrate ........................
slope........ ...................
Manni ng' s n .....................
Hei ght ..........................
Bottom wi dth ....................
Left slope ......................
Right slope.....................
computed Results:
Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ve 1 OCl ty ........................
Flow a rea .......................
Flow perimeter ..................
Hydraulic radius ................
TOp wi dth .......................
Area........................... .
Perimeter .......................
Percent full ....................
Critical Information
cri ti ca 1 depth ..................
Critical slope..................
Critical velocity... ............
Critical area ...................
Critical perimeter ..............
Critical hydraulic radius .......
Critical top width ..............
specific energy.................
Mi ni mum energy ..................
Froude number ...................
Flow condi ti on ..................
tmp#l
Trapezoidal
Depth of Flow
10.8900 cfs
0.0108 ft/ft
0.0150
19.0000 in
0.0100 in
16.0000 ft/ft
0.0400 ft/ft
5.7001 in
3.8509 fps
2.8279 ft2
148.3384 in
2.7452 in
142.8695 in
31. 4165 ft2
494.4269 in
30.0007 %
6.5084 in
0.0053 ft/ft
2.9539 fps
3.6866 ft2
169.3707 in
3.1344 in
163.1263 in
0.7055 ft
0.8135 ft
1. 3930
supercritical
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LINE A1
Q = 10.89 cfs (BASIN A)
24" RCP @ 1. 8%
Manning pipe calculator
Given Input Data:
shape ...........................
solving for .....................
Di ameter ........................
Flowrate ........................
slope ...........................
Manning's n .....................
computed Results:
Depth ...........................
Area ............................
Wetted Area .....................
wetted perimeter ................
perimeter .......................
Ve loci ty ........................
Hydraulic Radius ................
Percent Full....................
Full flow Flowrate ..............
FU 11 flow vel oci ty ..............
Critical Information
Critical depth ..... .............
Critical slope ..................
cri ti ca 1 vel oci ty ...............
cri ti ca 1 area ...................
Critical perimeter. .............
Critical hydraulic radius .......
Critical top width ..............
specific energy.................
Minimum energy..................
Froude number ...................
Flow condi ti on ..................
tmp#l
ci rcular
Depth of Flow
24.0000 in
10.8900 cfs
0.0180 ft/ft
0.0150
10.7629 in
3.1416 ft2
1. 3650 ft2
35.2204 in
75.3982 in
7.9782 fps
5.5807 in
44.8453 %
26.3043 cfs
8.3729 fps
14.2526 in
0.0070 ft/ft
5.5954 fps
1. 9462 ft2
42.2043 in
6.6405 in
24.0000 in
1. 8861 ft
1. 7816 ft
1. 6980
supercri ti ca 1
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ATTACHMENT 5
V ARlOUS CHARTS & GRAPHS FOR BASIN B
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Te' LIMITATIONS:
I L 100 I. Maximum length = 1000' Te
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1000 90 2. Maximum area = 10 Acres !I
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II EXAMPLE: E
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7 (I) L =!I!lO', H =5.0', K = Single Family (1/4 Ad 3!1
Development, Tc = 12.6 min.
6 (2) L =550' I H =!I.O', K = Commercial
I 100 40
Development, Tc = 9.7 min.
5
I ~A~IN B-1
4 L" nl' ~ = ~\<, >. C'\MIMf:~r..1 De\lf\ap'^'t>\ t
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RCFC 8 WCD TIME OF CONCENTRATION
I HYDROLOGY ~AANUAL FOR INITIAL SUBAREA
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CALCULATION SHEET
PLATE 0-4.7
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CONCRETE CURB & GUTTER
BASIN B-1
Channel Calculator
Given Input Data:
Shape ...........................
Solving for.....................
Flowrate ........................
Slope ...........................
Manni ng 0 s n .....................
Hei ght ..........................
Bottom width ....................
Left slope ......................
Ri ght slope .....................
computed Results:
Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ve 1 OC1 ty ........................
Flow a rea .......................
Flow perimeter ..................
Hydraulic radius ................
Top wi dth .......................
Area........................... .
Peri meter .......................
percent full ....................
Critical Information
cri ti cal depth ..................
Critical slope ..................
Critical velocity...............
cri ti ca 1 area ...................
Critical perimeter ..............
Critical hydraulic radius .......
Critical top width ..............
specific energy.................
Minimum energy..................
Froude number ...................
Flow condition ..................
tmp#l
Trapezoi da 1
Depth of Flow
1. 5500 cfs
0.0045 ft/ft
0.0150
6.0000 in
0.0100 in
16.0000 ft/ft
0.0260 ft/ft
2.7429 in
1. 5399 fps
1.0066 ft2
108.2901 in
1.3385 in
105.6776 in
4.8159 ft2
236.8689 in
45.7150 %
2.5124 in
0.0072 ft/ft
1. 8353 fps
0.8445 ft2
99.1918 in
1.2260 in
96.7988 in
0.2654 ft
0.3141 ft
0.8030
subcritical
Page 1
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LINE B1
Q = 1.55 cfs (BASIN B-1)
24" RCP @ 2.0%
Manning pipe Calculator
Given Input Data:
shape ...........................
Solving for .....................
Di ameter ........................
Flowrate ........................
slope ...........................
Manni ng' s n .....................
computed Results:
Depth ...........................
Area........................... .
Wetted Area ..... ................
Wetted Perimeter. ...............
Perimeter .......................
Ve loci ty ........................
Hydraulic Radius ................
Percent Full ....................
Full flow Flowrate ..............
Full flow velocity..............
Critical Information
cri ti ca 1 depth ..................
cri ti cal slope ..................
Critical velocity...............
Critical area ...................
Critical perimeter .......... ....
Critical hydraulic radius .......
Critical top width .......... ....
Specific energy.................
Minimum energy..................
Froude number ...................
Flow condi ti on ..................
tmp#l
Circular
Depth of Flow
24.0000 in
1. 5500 cfs
0.0200 ft/ft
0.0150
3'.8527 in
3.1416 ft2
0.3260 ft2
19.7873 in
75.3982 in
4.7546 fps
2.3724 in
16.0528 %
27.7272 cfs
8.8258 fps
5.1678 in
0.0060 ft/ft
3.1186 fps
0.4970 ft2
23.1618 in
3.0900 in
19.7302 in
0.6724 ft
0.6460 ft
1. 7790
Supercritical
Page 1
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ATTACHMENT 6
VARIOUS CHARTS & GRAPHS FOR EXISTING BASIN IE
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LIMITATIONS:
I. Maximum lenoth = 1000'
2. Maximum area = 10 Acres
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Fair Cover
Undeveloped
Poor eo""
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EXAMPLE:
(I) L =550', H =5.0', K = Sinole Family(l/4 Ac.) 35
Development, Tc = 12.6 min.
(2) L =550', H =5.0', K = Commercial
Development, Tc = 9.7 min.
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RCFC a WCD
HYDROLOGY tvlANUAL
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TIME OF
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FOR INITIAL SUBAREA
PLATE 0-3
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