HomeMy WebLinkAboutTract Map 3883 Lot 301 Hydrology Calculations Custom Residence7.3
PROJECT NO:
FILE CATETORY:
Hydrology Calculations
For
Custom Residence
A.P.N. 919-240-001
Calle Tiara
Temecula, California
Prepared For:
Keith Whitehead
KTW Investments, LLC
39252 Winchester Rd. #107-289
Temecula, CA 92563
Prepared by:
Medofer Engineering Inc.
28610 Midsummer Lane Q pFESSrpy
Menifee, California 92584 Q yA M o F2c909) 816-5830
No.47604
c Em.
CIVI9
OF CALIFO
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Michael A. Medofer ate
RCE 47604, expires 12/31/15
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Table of Contents
Discussion Section 1
Hydrology Calculations — Existing Condition 100 yr. Section 2
Hydrology Calculations — Existing Condition 10 yr. Section 3
Hydrology Calculations— Developed Condition 100 yr. Section 4
Hydrology Calculations— Developed Condition 10 yr. Section 5
Hydraulic Calculations Section 6
Reference Material/Hydrology Maps Section 7
Discussion
I.INTRODUCTION
1. Project Description
The subject of this report, Custom residence at A.P.N. 919-240-001, is located at the corner
of Calle Tiara and Calle Felicidad in Temecula, California. The development consists of
construction of a single family residence on a previously rough graded 0.66 acre lot(see vicinity
map).
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VICINITY MAP
NO SCALE
2. Existing Drainage Conditions
The property is located within a previously developed residential subdivision with paved roads
to the north and west, and existing single family residences to the south and east. The existing
paved roads have asphalt berms at the edge of pavement to convey surface drainage. In the
existing condition, the drainage in the lot is split with approximately 0.17 acres draining via
surface flow to the corner of Calle Tiara and Calle Felicidad, and approximately 0.49 acres
draining via surface flow to the southeasterly corner of the property and into the neighboring
lot.
3. Proposed Development and Facilities
Developed flows will be conveyed via drainage swales to the existing points of discharge within
the lot, as described in the existing drainage conditions discussion. In the developed condition,
the drainage in the lot is split with approximately 0.21 acres draining via drainage Swale to a
rip rap dissipator at the corner of Calle Tiara and Calle Felicidad, and approximately 0.45 acres
draining via drainage Swale to a rip rap dissipator at the southeasterly corner of the property
and into the neighboring lot.
4.Description of Analysis/Methodology
Hydrology: This report incorporates a CiviICADD/Civil Design Computer Program based on
the Riverside County Flood Control and Water Conservation Rational Method, Unit
Hydrograph, Basin Routing methods. These computer programs require input data for rainfall,
soil type, type of development, and topographic data for the study area. A series of 10-yr and
100-yr rational method studies were run for both the existing and developed conditions.
Rainfall Data: Standard intensity-duration curve data generated from Plate D-4.1 of the
Riverside County Flood Control and Water Conservation Rational Hydrology Manual for the
Sun City area was used.
Soil Type Data: The soil type was obtained from the Hydrologic Soils Group Map within the
Riverside County Flood Control and Water Conservation Rational Hydrology Manual. A copy
of this map is included within this report. The predominant soil type obtained from the
Hydrologic Soils Group Map was determined to be Type BC.
Type of Development: Both existing and ultimate conditions were analyzed. For the existing
condition, undeveloped land use was assumed to model current storm discharges.
The project site is planned for a single family residence. Therefore, the hydrology report
incorporates factors that generate discharges representing residential, '/z acre lot type
development throughout the site for the ultimate developed condition.
Topographic Data: The Hydrology Maps define the subareas and contains information used
as the basis of generating the project hydrology study.
Runoff Index: Runoff Index factors for undeveloped and developed conditions were obtained
from Plate E-6.1 of the Riverside County Flood Control and Water Conservation Hydrology
Manual.
Impervious Cover: Impervious cover factors for developed areas were obtained from Plate E-
6.3 of the Riverside County Flood Control and Water Conservation Hydrology Manual.
5.Summary & Conclusion
The hydrologic analysis in this report compares the existing storm flows for the tributary
drainage basin the project site lies within, to the developed condition storm flows due to the
project. As shown in the table below, there is a minor decrease in flow due to the development,
but the decrease is incremental compared to the flows for the tributary drainage basin.
BASIN 'A'BASIN 'B' TOTAL
EXISTING Qioo, cfs 0.70 1.76 2.46
DEVELOPED Qioo,cfs 0.83 1.68 2.51
DIFFERENCE, cfs 0.05
EXISTING Qio, cfs 0.46 1.16 1.62
DEVELOPED Qio,cfs 0.54 1.09 1.63
DIFFERENCE, cfs 0.01
The total 100-year event flow for the developed project condition is calculated as 2.51 cfs, and
the 10-year event flow is calculated as 1.63 cfs. There is negligible increase in runoff to the
discharge points, as shown in the table above, due to the increase in impervious surfaces and
also because of the minor diversion of approximately 0.04 acres.
The hydraulic calculations included in this report show the velocities of the 100-year storm
flows leaving the property is less than 2.6 feet per second.
Rational Method
Existing Condition
100 Year Storm
It 1
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software, (c) 1989 - 2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:tiaraexal00.out
CUSTOM RESIDENCE
APN 919-240-001
EXISTING HYDROLOGY
100-YEAR STORM EVENT
Hydrology Study Control Information **********
English (in-lb) Units used in input data file
Medofer Engineering, Inc. , Menifee, CA - S/N 959
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District
1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 2
Standard intensity-duration curves data (Plate D-4.1)
For the [ Murrieta,Tmc,Rnch Callorco ] area used.
10 year storm 10 minute intensity = 2.360 (Tn/Hr)
10 year storm 60 minute intensity = 0.880 (In/Hr)
100 year storm 10 minute intensity = 3.480 (In/Hr)
100 year storm 60 minute intensity = 1.300 (In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.300 (In/Hr)
Slope of intensity duration curve = 0.5500
Process from Point/Station 1.000 to Point/Station 1.100
INITIAL AREA EVALUATION ****
Initial area flow distance = 70.000 (Ft. )
Top (of initial area) elevation = 1270.000 (Ft. )
Bottom (of initial area) elevation = 1267.000 (Ft. )
Difference in elevation =3.000 (Ft. )
Slope = 0.04286 s (percent)= 4 .29
TC = k(0.530) * [ (length^3) / (elevation change) ] ^0.2
Initial area time of concentration = 5.444 min.
Rainfall intensity = 4.866(In/Hr) for a 100.0 year storm
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.849
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.500
Decimal fraction soil group C = 0.500
Decimal fraction soil group D = 0.000
RI index for scil (AMC 2) = 82.00
Pervious area fraction = 1.000; Impervious fraction = 0.000
Initial subarea runoff = 0.702 (CFS)
Total initial stream area = 0. 170(Ac. )
Pervious area fraction = 1.000
End of computations, total study area = 0.17 (Ac. )
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area £raction(Ap) = 1.000
Area averaged RI index number = 82.0
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software, (c) 1989 - 2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:TIARAEXB100.out
CUSTOM RESIDENCE
APN 919-240-001
EXISTING HYDROLOGY
100-YEAR STORM EVENT
Hydrology Study Control Information **********
English (in-lb) Units used in input data file
Medofer Engineering, Inc. , Menifee, CA - SIN 959
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District
1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 2
Standard intensity-duration curves data (Plate D-4.1)
For the [ Murrieta,Tmc,Rnch Callorco ] area used.
10 year storm 10 minute intensity = 2 .360 (In/Hr)
10 year storm 60 minute intensity = 0.880 (In/Hr)
100 year storm 10 minute intensity = 3.480(In/Hr)
100 year storm 60 minute intensity = 1.300 (In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.300 (In/Hr)
Slope of intensity duration curve = 0.5500
Process from Point/Station 1.000 to Point/Station 2 . 100
INITIAL AREA EVALUATION ****
Initial area flow distance = 194 .000 (Ft. )
Top (of initial area) elevation = 1270.000 (Ft. )
Bottom (of initial area) elevation = 1250.500 (Ft. )
Difference in elevation = 19.500 (Ft. )
Slope = 0.10052 s (percent)= 10.05
TO = k(0.530) * [ (length^3) / (elevation change) ] ^0.2
Initial area time of concentration = 6.902 min.
Rainfall intensity = 4 .271 (In/Hr) for a 100.0 year storm
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.842
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.500
Decimal fraction soil group C = 0.500
Decimal fraction soil group D = 0.000
RI index for soil (AMC 2) = 82.00
Pervious area fraction = 1.000; Impervious fraction = 0.000
Initial subarea runoff = 1.763 (CFS)
Total initial stream area = 0.490(Ac. )
Pervious area fraction = 1.000
End of computations, total study area = 0.49 (Ac. )
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 82.0
Rational Method
Existing Condition
10 Year Storm
TIARAEXA10.out
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989-2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:TIARAEXA10.out
CUSTOM RESIDENCE
APN 919-240-001
EXISTING HYDROLOGY
10-YEAR STORM EVENT
Hydrology Study Control Information
English (in-lb) Units used in input data file
Medofer Engineering, Inc. Menifee, CA-S/N 959
Rational Method Hydrology Program based on
Riverside County Flood Control&Water Conservation District
1978 hydrology manual
Storm event(year) = 10.00 Antecedent Moisture Condition =2
Standard intensity-duration curves data(Plate D-4.1)
For the[ Murrieta,Tmc,Rnch Callorco]area used.
10 year storm 10 minute intensity= 2.360(In/Hr)
10 year storm 60 minute intensity= 0.880(ln/Hr)
100 year storm 10 minute intensity= 3.480(In/Hr)
100 year storm 60 minute intensity= 1.300(In/Hr)
Storm event year= 10.0
Calculated rainfall intensity data:
1 hour intensity= 0.880(In/Hr)
Slope of intensity duration curve=0.5500
Process from Point/Station 1.000 to Point/Station 1.100
INITIAL AREA EVALUATION ****
Initial area flow distance= 70.000(Ft.)
Top (of initial area) elevation = 1270.000(Ft.)
Bottom (of initial area) elevation= 1267.000(Ft.)
Difference in elevation= 3.000(Ft.)
Slope= 0.04286 s(percent)= 4.29
TC = k(0.530)*[(IengthA3)/(elevation change)]A0.2
Initial area time of concentration = 5.444 min.
Rainfall intensity= 3.294(In/Hr)fora 10.0 year storm
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.827
Decimal fraction soil group A= 0.000
Decimal fraction soil group B= 0.500
Decimal fraction soil group C = 0.500
Decimal fraction soil group D= 0.000
RI index for soil(AMC 2) = 82.00
Pagel
TIARAEXA10.out
Pervious area fraction= 1.000; Impervious fraction = 0.000
Initial subarea runoff= 0.463(CFS)
Total initial stream area = 0.170(Ac.)
Pervious area fraction = 1.000
End of computations, total study area= 0.17 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number= 82.0
Page 2
TIARAEXB10.out
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989-2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:TIARAEXB10.out
CUSTOM RESIDENCE
APN 919-240-001
EXISTING HYDROLOGY
10-YEAR STORM EVENT
Hydrology Study Control Information '*"' "
English (in-lb) Units used in input data file
Medofer Engineering, Inc., Menifee, CA-S/N 959
Rational Method Hydrology Program based on
Riverside County Flood Control &Water Conservation District
1978 hydrology manual
Storm event(year) = 10.00 Antecedent Moisture Condition =2
Standard intensity-duration curves data(Plate D-4.1)
For the[ Murrieta,Tmc,Rnch Callorco]area used.
10 year storm 10 minute intensity= 2.360(In/Hr)
10 year storm 60 minute intensity= 0.880(In/Hr)
100 year storm 10 minute intensity= 3.480(In/Hr)
100 year storm 60 minute intensity= 1.300(In/Hr)
Storm event year= 10.0
Calculated rainfall intensity data:
1 hour intensity= 0.880(In/Hr)
Slope of intensity duration curve =0.5500
Process from Point/Station 1.000 to Point/Station 2.100
INITIAL AREA EVALUATION **"
Initial area flow distance= 194.000(Ft.)
Top (of initial area)elevation = 1270.000(Ft.)
Bottom (of initial area) elevation = 1250.500(Ft.)
Difference in elevation = 19.500(Ft.)
Slope= 0.10052 s(percent)= 10.05
TC = k(0.530)*[(IengthA3)/(elevation change)]A0.2
Initial area time of concentration = 6.902 min.
Rainfall intensity= 2.891(In/Hr)fora 10.0 year storm
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.817
Decimal fraction soil group A= 0.000
Decimal fraction soil group B = 0.500
Decimal fraction soil group C= 0.500
Decimal fraction soil group D= 0.000
RI index for soil(AMC 2) = 82.00
Pagel
TIARAEXB10.out
Pervious area fraction= 1.000; Impervious fraction = 0.000
Initial subarea runoff= 1.158(CFS)
Total initial stream area = 0.490(Ac.)
Pervious area fraction = 1.000
End of computations, total study area= 0.49 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number= 82.0
Page 2
Rational Method
Proposed Condition
100 Year Storm
tiaradeva100.out
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989-2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:tiaradeval00.out
CUSTOM RESIDENCE
APN 919-240-001
DEVELOPED HYDROLOGY
100-YEAR STORM EVENT
Hydrology Study Control Information
English (in-lb) Units used in input data file
Medofer Engineering, Inc., Menifee, CA-S/N 959
Rational Method Hydrology Program based on
Riverside County Flood Control&Water Conservation District
1978 hydrology manual
Storm event(year) = 100.00Antecedent Moisture Condition = 2
Standard intensity-duration curves data(Plate D-4.1)
For the [ Murrieta,Tmc,Rnch Callorco]area used.
10 year storm 10 minute intensity= 2.360(In/Hr)
10 year storm 60 minute Intensity= 0.880(In/Hr)
100 year storm 10 minute intensity= 3.480(In/Hr)
100 year storm 60 minute intensity= 1.300(In/Hr)
Storm event year= 100.0
Calculated rainfall intensity data:
1 hour intensity= 1.300(In/Hr)
Slope of intensity duration curve = 0.5500
Process from Point/Station 3.000 to Point/Station 1.100
INITIAL AREA EVALUATION ****
Initial area flow distance= 94.000(Ft.)
Top (of initial area) elevation = 1269.000(Ft.)
Bottom(of initial area)elevation= 1267.000(Ft.)
Difference in elevation = 2.000(Ft.)
Slope = 0.02128 s(percent)= 2.13
TC = k(0.420)'[(IengthA3)/(elevation change)]A0.2
Initial area time of concentration = 5.584 min.
Rainfall intensity = 4.799(In/Hr)fora 100.0 year storm
SINGLE FAMILY (1/2 Acre Lot)
Runoff Coefficient = 0.823
Decimal fraction soil group A= 0.000
Decimal fraction soil group B =0.500
Decimal fraction soil group C = 0.500
Decimal fraction soil group D= 0.000
RI index for soil(AMC 2) = 62.50
Pagel
tiaradeva100.out
Pervious area fraction = 0.600; Impervious fraction = 0.400
Initial subarea runoff= 0.829(CFS)
Total initial stream area= 0.210(Ac.)
Pervious area fraction = 0.600
End of computations, total study area= 0.21 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 0.600
Area averaged RI index number= 62.5
Page 2
TIARADEVB100.out
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989-2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:TIARADEVB100.out
CUSTOM RESIDENCE
APN 919-240-001
DEVELOPED HYDROLOGY
100-YEAR STORM EVENT
Hydrology Study Control Information
English (in-lb) Units used in input data file
Medofer Engineering, Inc. Menifee, CA-SIN 959
Rational Method Hydrology Program based on
Riverside County Flood Control&Water Conservation District
1978 hydrology manual
Storm event(year) = 100.00 Antecedent Moisture Condition = 2
Standard intensity-duration curves data(Plate D-4.1)
For the [ Murrieta,Tmc,Rnch Callorco]area used.
10 year storm 10 minute intensity= 2.360(In/Hr)
10 year storm 60 minute intensity= 0.880(In/Hr)
100 year storm 10 minute intensity= 3.480(ln/Hr)
100 year storm 60 minute intensity= 1.300(In/Hr)
Storm event year= 100.0
Calculated rainfall intensity data:
1 hour intensity= 1.300(ln/Hr)
Slope of intensity duration curve=0.5500
Process from Point/Station 4.000 to Point/Station 2.100
INITIAL AREA EVALUATION **"
Initial area flow distance= 244.000(Ft.)
Top (of initial area) elevation = 1271.810(Ft.)
Bottom (of initial area) elevation = 1250.500(Ft.)
Difference in elevation = 21.310(Ft.)
Slope= 0.08734 s(percent)= 8.73
TC = k(0.420)'[(IengthA3)/(elevation change)]A0.2
Initial area time of concentration = 6.165 min.
Rainfall intensity= 4.544(In/Hr)fora 100.0 year storm
SINGLE FAMILY (1/2Acre Lot)
Runoff Coefficient=0.819
Decimal fraction soil group A=0.000
Decimal fraction soil group B =0.500
Decimal fraction soil group C = 0.500
Decimal fraction soil group D= 0.000
RI index for soil(AMC 2) = 62.50
Pagel
TIARADEVB100.out
Pervious area fraction= 0.600, Impervious fraction = 0.400
Initial subarea runoff= 1.675(CFS)
Total initial stream area= 0.450(Ac.)
Pervious area fraction = 0.600
End of computations, total study area= 0.45 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap)= 0.600
Area averaged RI index number= 62.5
Page 2
Rational Method
Proposed Condition
10 Year Storm
TIARADEVA10.out
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989-2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:TIARADEVA10.out
CUSTOM RESIDENCE
APN 919-240-001
DEVELOPED HYDROLOGY
10-YEAR STORM EVENT
Hydrology Study Control Information
English (in-lb) Units used in input data file
Medofer Engineering, Inc. Menifee, CA-S/N 959
Rational Method Hydrology Program based on
Riverside County Flood Control &Water Conservation District
1978 hydrology manual
Storm event(year) = 10.00Antecedent Moisture Condition = 2
Standard intensity-duration curves data(Plate D-4.1)
For the [ Murrieta,Tmc,Rnch Callorco]area used.
10 year storm 10 minute intensity= 2.360(In/Hr)
10 year storm 60 minute intensity= 0.880(In/Hr)
100 year storm 10 minute intensity= 3.480(In/Hr)
100 year storm 60 minute intensity= 1.300(In/Hr)
Storm event year= 10.0
Calculated rainfall intensity data:
1 hour intensity= 0.880(In/Hr)
Slope of intensity duration curve= 0.5500
Process from Point/Station 3.000 to Point/Station 1.100
INITIALAREA EVALUATION ****
Initial area flow distance= 94.000(Ft.)
Top (of initial area) elevation = 1269.000(Ft.)
Bottom (of initial area)elevation = 1267.000(Ft.)
Difference in elevation = 2.000(Ft.)
Slope = 0.02128 s(percent)= 2.13
TC = k(0.420)*[(length43%elevation change)]40.2
Initial area time of concentration = 5.584 min.
Rainfall intensity= 3.248(In/Hr)fora 10.0 year storm
SINGLE FAMILY(1/2 Acre Lot)
Runoff Coefficient= 0.793
Decimal fraction soil group A= 0.000
Decimal fraction soil group B = 0.500
Decimal fraction soil group C = 0.500
Decimal fraction soil group D= 0.000
RI index for soil(AMC 2) = 62.50
Pagel
TIARADEVA10.out
Pervious area fraction = 0.600; Impervious fraction = 0.400
Initial subarea runoff= 0.541(CFS)
Total initial stream area= 0.210(Ac.)
Pervious area fraction = 0.600
End of computations, total study area= 0.21 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 0.600
Area averaged RI index number= 62.5
Page 2
TIARADEVB10.out
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Soflware,(c) 1989 -2001 Version 6.4
Rational Hydrology Study Date: 03/12/15 File:TIARADEVB10.out
CUSTOM RESIDENCE
APN 919-240-001
DEVELOPED CONDITION
10-YEAR STORM EVENT
Hydrology Study Control Information
English (in-lb) Units used in input data file
Medofer Engineering, Inc. Menifee, CA S/N 959
Rational Method Hydrology Program based on
Riverside County Flood Control&Water Conservation District
1978 hydrology manual
Storm event(year) = 10.00 Antecedent Moisture Condition =2
Standard intensity-duration curves data(Plate D-4.1)
For the[Murrieta,Tmc,Rnch Callorco]area used.
10 year storm 10 minute intensity= 2.360(ln/Hr)
10 year storm 60 minute intensity= 0.880(In/Hr)
100 year storm 10 minute intensity= 3.480(In/Hr)
100 year storm 60 minute intensity= 1.300(In/Hr)
Storm event year= 10.0
Calculated rainfall intensity data:
1 hour intensity= 0.880(In/Hr)
Slope of intensity duration curve= 0.5500
Process from Point/Station 4.000 to Point/Station 2.100
INITIAL AREA EVALUATION ***'
Initial area flow distance= 244.000(Ft.)
Top (of initial area) elevation = 1271.810(Ft.)
Bottom (of initial area)elevation= 1250.500(Ft.)
Difference in elevation = 21.310(Ft.)
Slope= 0.08734 s(percent)= 8.73
TC = k(0.420)*[(IengthA3)/(elevation change)]A0.2
Initial area time of concentration = 6.165 min.
Rainfall intensity = 3.076(ln/Hr)far a 10.0 year storm
SINGLE FAMILY (112 Acre Lot)
Runoff Coefficient=0.789
Decimal fraction soil group A= 0.000
Decimal fraction soil group B= 0.500
Decimal fraction soil group C = 0.500
Decimal fraction soil group D= 0.000
RI index for soil(AMC 2) = 62.50
Pagel
TIARADEVB10.out
Pervious area fraction = 0.600; Impervious fraction = 0.400
Initial subarea runoff= 1.091(CFS)
Total initial stream area= 0.450(Ac.)
Pervious area fraction= 0.600
End of computations, total study area= 0.45 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap)=0.600
Area averaged RI index number= 62.5
Page 2
Hydraulic Calculations
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TIARA-RIPRAP-A.OUT
FILE: TIARA-RIPRAP-A.WSW W S P G W - CIVILDESIGN Version 14.06 PAGE / 1 p 1 e
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WATER SURFACE PROFILE LISTING Date: 4-15-2015 Time: 2:37:42
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100.000 67.400 .229 67.629 83 2.15 .07 67.70 .00 .22 2.37 .010 1.000 3.00 0 .0
001 .0200 9229 00 23 .94 .59 .200 00 3.00 TRAP
I I I I I I I I I
100.002 67.400 .237 67.637 63 2.05 .07 67.70 .00 .22 2.42 .010 1.000 3.00 0 .0
003 .0200 8088 00 24 .88 .59 .200 00 3.00 TRAP
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100.005 67.400 .245 67.645 83 1.96 .06 67.70 .00 .22 2.47 .010 1.000 3.00 0 .0
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I I I I I I I I I I I I
100.009 67.400 .253 67.653 B3 1.86 .05 67.71 .00 .22 2.52 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
006 .0200 6216 00 25 .18 .59 .200 00 3.00 TRAP
I I I I I I I
100.015 67.400 .262 67.662 83 1.78 .05 67.71 .00 .22 2.57 .010 1.000 3.00 0 .0
008 .0200 5451 00 26 .73 .59 .200 00 3.00 TRAP
I I 1 1 I 1 I 1 1 1
100.023 67.400 .270 67.671 83 1.69 .04 67.72 .00 .22 2.62 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
011 .0200 4781 01 27 .69 .59 .200 00 3.00 TRAP
I I I I I I I
100.034 67.401. .279 67.680 83 1.62 .04 67.72 .00 .22 2.68 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
014 .0200 4194 01 28 .E5 .59 .200 00 3.00 TRAP
I I I I I I I I
100.048 67.401 .289 67.690 83 1.54 .04 67.73 .00 .22 2.73 .010 1.000 3.00 0 .0
018 .0200 3680 01 29 .61 .59 .200 00 3.00 TRAP
FILE: TIARA-RIPRAP-A.WSW W S P G W - CIVILDESIGN Version 14.06 PAGE 2
Program Package Serial Number: 1648
WATER SURFACE PROFILE LISTING Date: 4-15-2015 Time: 2:37:42
x+++a.+......-.e...x.........x:ex+a-.++s,..........re.a..-a........x+++.+.r+...+....>+«++,.i......r...a.f..>++.-... +x..t."
I Invert I Depth I Water I Q I Vol Vel I Energy I Super ICriticallFlow ToplHeight/IBase Wtl INo Wth
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100.066 67.401 .298 67.700 83 1.47 .03 67.73 .00 .22 2.79 .010 1.000 3.00 0 .0
022 .0200 3229 01 30 .58 .59 .200 00 3.00 TRAP
Page 1
TIARA-RIPRAP-A.OUT
I I I I I I I I I I I I I
100.08B 67.402 .308 67.710 83 1.40 .03 67.74 .00 .22 2.65 .010 1.000 3.00 0 .0
028 .0200 2834 01 31 .54 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
100.116 67.402 .318 67.720 83 1.34 .03 67.75 .00 .22 2.91 .010 1.000 3.00 0 .0
034 .0200 248E 01 32 .51 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
100.150 67.403 .328 67.731 83 1.27 .03 67.76 .00 .22 2.97 .010 1.000 3.00 0 .0
042 .0200 2184 01 33 .48 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
100.192 67.404 .339 67.743 83 1.21 .02 67.77 .00 .22 3.03 .010 1.000 3.00 0 .0
051 .0200 1918 01 34 .45 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
100.243 67.405 .350 67.755 83 1.16 .02 67.78 .00 .22 3.10 .010 1.000 3.00 0 .0
063 .0200 1684 01 35 .42 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I
100.305 67.406 .361 67.767 83 1.10 .02 67.79 .00 .22 3.17 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
076 .0200 1479 01 36 .40 .59 .200 00 3.00 TRAP
I I I I I I I I I
100.382 67.408 .372 67.780 83 2.05 .02 67.80 .00 .22 3.23 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
093 .0200 1299 01 37 .38 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
100.474 67.409 .384 67.794 83 1.00 .02 67.81 .00 .22 3.31 .010 1.000 3.00 0 .0
113 .0200 1141 01 38 .35 .59 .200 00 3.00 TRAP
FILE: TIARA-RIPRAP-A.WSW W S P G W - CIVILDESIGN Version 14.06 PAGE 3
Program Package Serial Number: 1648
WATER SURFACE PROFILE LISTING Date: 4-15-2015 Time: 2:37:42
Axe...sAeAA.,-,....,+..«+x....+.>....++....,.....+.a.++....+xx.......++......++++++..+.+...++.x.+.-.x..x+x...,,..+. . ,...+.
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I I I I I I I I I I I I I
100.588 67.412 .396 67.606 83 .96 .01 67.B2 .00 .22 3.38 .010 1.000 3.00 0 .0
138 .0200 1003 01 40 .33 .59 .200 00 3.00 TRAP
I I I I I I I I I I I
100.726 67.415 .409 67.823 83 .91 .01 67.84 .00 .22 3.45 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
170 .0200 0881 01 41 .31 .59 .200 00 3.00 TRAP
I I I I I
100.896 67.41E .421 67.839 83 .87 .01 67.65 .00 .22 3.53 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
209 .0200 0774 02 42 .29 .59 .200 00 3.00 TRAP
I I I I I I I 1 1
101.104 67.422 .434 67.857 83 .83 .01 67.87 .00 .22 3.61 .010 1.000 3.00 0 .0
259 .0200 0681 02 43 .28 .59 .200 00 3.00 TRAP
Page 2
TIARA-RIPRAP-A.00T
I I I I I I I I I I I I I
101.363 67.427 .448 67.875 83 .79 .01 67.88 .00 .22 3.69 .010 1.000 3.00 0 .0
323 .0200 0598 02 45 .26 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
101.686 67.434 .462 67.895 83 .75 .01 67.90 .00 .22 3.77 .010 1.000 3.00 0 .0
408 .0200 0526 02 46 .25 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
102.094 67.442 .476 67.918 83 .72 .01 67.93 .00 .22 3.B5 .010 1.000 3.00 0 -0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
523 .0200 0462 02 48 .23 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I I
102.617 67.452 .490 67.943 83 .69 .01 67.95 .00 .22 3.94 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
686 .0200 0406 03 49 .22 .59 .200 00 3.00 TRAP
I I I I I I I I I I I I
103.303 67.466 .505 67.971 83 .65 .01 67.98 .00 .22 4.03 .010 1.000 3.00 0 -0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
928 .0200 0357 03 51 .27. .59 .200 00 3.00 TRAP
FILE: TIARA-RIPRAP-A.WSW W S P G W - CIVILDERIGN Version 14.5b PAGE 4
Program Package Serial Number: 1648
WATER SURFACE PROFILE LISTING Date: 4-15-2015 Time: 2:37:42
Invert I Depth I Water I Q Vel Val Energy I Super ICriticallFloW ToplHeight/IBase Wtl INo Wth
Station I Elev I (FT) I Elev I (CFS) I (FPS) Head I Grd.EI. l Elev I Depth Width Did.-FTlor I.D. I ZL IPrs/Pip
L/Elem ICh Slope I I I SF Avel HF ISE DpthIFroude NlNorm Dp "N" I X-Falll ZR IType Ch
I I I I I I I I I I I I I
104.231 67.485 .520 68.005 83 .62 .01 68.01 .00 .22 4.12 .010 1.000 3.00 0 .0
769 -0200 0322 02 52 .19 .59 .200 00 3.00 TRAP
I I I
105.000 67.500 .530 68.030 83 .60 .01 68.04 .00 .22 4.18 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
Page 3
TIARA-RIPRAP-B.OUT F/Q /5
FILE: TIARA-RIPRAP-S.WSW W S P G W - CIVILDESIGN Version 14.06 PAGE 1
Program Package Serial Number: 1648 Q
WATER SURFACE PROFILE LISTING Date: 4-15-2015 Time: 4:24:47
prA%hs A> oa I Co jae'
I Invert I Depth I Water I 4 I Vol Vet I Energy I Super ICriticallFlow ToplHe4ght/1Bdse Wtl No Wth
Station I Elev I (FT) I Elev I (CFS) I (FPS) Head Grd.E1. 1 Elev Depth I Width IDia.-FTlor I.D. I ZL IPrs/Pip
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- -I
L/Elem ICh Slope I I I I SF Avel HF ISE DpthlFroude NINorm Dp I "N" I X-Fall1 ZR IType Ch
I I I I I I I I I
200.000 50.600 .323 50.923 1.68 2.64 .11 51.03 .00 .32 2.94 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
001 .0400 9555 00 32 1.00 .69 .200 00 3.00 TRAP
I I I I I I I I I I
200.001 50.600 .334 50.934 1.68 2.52 .10 51.03 .00 .32 3.00 .010 1.000 3.00 0 .0
002 .0400 8389 00 33 .94 .69 .200 00 3.00 TRAP
I I I I I I I I I
200.003 50.600 .344 50.944 1.68 2.40 .09 51.03 .00 .32 3.07 .010 1.000 3.00 0 .0
004 .0400 7367 00 34 .89 .69 .200 00 3.00 TRAP
I I I I I I I
200.007 50.600 .355 50.956 1.68 2.29 .08 51.04 .00 .32 3.13 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
006 .0400 6470 00 36 .83 .69 .200 00 3.00 TRAP
I
200.014 50.601 .367 50.967 1.6B 2.18 .07 51.04 .00 .32 3.20 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
009 .0900 5683 01 37 .78 .69 .200 00 3.00 TRAP
I I I
20C.023 50.601 .378 50.979 1.68 2.08 .07 51.05 .00 .32 3.27 .010 1.000 3.00 0 .0
013 .04D0 4992 01 38 .74 .69 .200 00 3.00 TRAP
I I I I I I I I I
200.035 50.601 .390 50.992 1.68 1.98 .06 51.05 .00 .32 3.34 .010 1.000 3.00 0 .0
017 .0400 4386 01 39 .69 .69 .200 00 3.00 TRAP
I I I I
200.052 50.602 .402 51.005 1.68 1.89 .06 51.06 .00 .32 3.41 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
022 .0400 3B53 01 40 .65 .69 .200 00 3.00 TRAP
I I I I I I 1 I I
200.074 50.603 .415 51.018 1.68 1.B0 .05 51 .07 .00 .32 3.49 .010 1.000 3.00 0 .0
028 .0400 3386 01 41 .62 .69 .200 00 3.00 TRAP
3 FILE: TIARA-RIPRAP-B.WSW W S P G W - CIVILDESIGN Version 14.06 PAGE 2
P-ogram Package Serial Number: 1648
WATER SURFACE PROFILE LISTING Date: 4-15-2015 Time: 4:24:47
I Invert I Depth I Water I 4 Vol Val I Energy I Super ICriticallFlow ToplHeight/IBase WLI INo Nth
Station I Elev I (FT) I Elev I (CFS) I (FPS) Head I Grd.El. l Elev I Depth I Width IDia.-FTlor I.D. 1 ZL 1Prs/Pip
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- -I
L/Elem ICh Slope I I I I SF Avel HF ISE DpthlFroude NIMorm Dp I "N" I X-Fa111 ZR IType Ch
I I I I I I I I I I I
200.102 50.604 .42E 51.032 i.68 1.72 .05 51.08 .00 .32 3.57 .010 1.000 3.00 0 .0
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I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
035 .0400 2976 01 43 .58 .69 .200 00 3.00 TRAP
I I I I I I I I
200.137 50.605 .441 51.047 1.68 1.64 .04 51.09 .00 .32 3.65 .010 1.000 3.00 0 .0
044 .0400 2616 01 44 .54 .69 .200 00 3.00 TRAP
I I I I I I I l I I I I
200.181 50.607 .455 51.062 1.68 1.56 .04 51.10 .00 .32 3.73 .010 1.000 3.00 0 .0
055 .0400 2299 01 45 .51 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I I
200.236 50.609 .469 51.07E 1.68 1.49 .03 51.11 .00 ,32 3.81 .010 1,000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- f-
069 .0400 2021 01 47 .48 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I
200.305 50.612 .483 51.095 1.68 1.42 .03 51.13 .00 .32 3.90 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
086 .0400 1777 02 48 .45 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I
200.390 50.616 .497 51.113 1.68 1.35 .03 51.14 .00 .32 3.99 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
107 .0400 1562 02 50 .43 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I I
200.497 50.620 .513 51.132 1.68 1.29 .03 51.16 .00 .32 4.08 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
134 .0400 1374 02 51 .40 .69 .200 00 3.00 TRAP
I I I I I I 1 I I I I I I
200.631 50.625 .528 51.153 1.68 1.23 .02 51.18 .00 .32 4.17 .010 1.000 3.00 0 .0
269 .0400 1208 02 53 .38 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I
200.800 50.632 .544 51.176 1.68 1.17 .02 51.20 .00 .32 4.26 .010 1.000 3.00 0 .0
I- I-I- I- l- -I- -I- 1- -I-I-I- -I- -I- I-
215 .0400 1062 02 54 .36 .69 .200 00 3.00 TRAP
FILE: TIARA-RIPRAP-B.WSW W S P G W - CIVILDESIGN Version 14.06 PAGE 3
Program Package Serial Number: 1648
WATER SURFACE PROFILE LISTING Date: 4-15-2015 Time: 4.24:47
x............,.............. +«a...............+.....+.+..........+........+.++.....+ ........e-. .+.... .1x11-1
I Iwert I Depth I Water I Q I Val Vel I Energy I Super ICriticall Flow ToplHeight/]Base Wt1 No Wth
Station I Elev I (FT) I Elev I (CIS) I (FPS) Head I Grd.El. 1 Elev I Depth I Width Dia.-FTlor I.D. I ZL Prs/Pip
L/Elem ICh Slope I I I I SF Ave[ HF ISE DpthlFroude NINorm Dp I "N" I X-Fa111 ZR IType Ch
I I I I I I I
x
I I I I I I
201.015 50.641 .560 51.201 1.68 1.12 .02 51.72 .00 .32 4.36 .010 1.000 3.00 0 .0
279 .0400 0934 03 56 .34 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I
202.293 50.652 .577 51.228 1.68 1.07 .02 51.25 .00 .32 4.46 .010 1,000 3.00 0 .0
I- 1-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
366 .0400 0822 03 58 .32 .69 .200 00 3.00 TRAP
I I I I I I I I I I
201.659 50.666 .594 51.260 1.68 1.02 .02 51.28 .00 .32 4.56 .010 1.000 3.00 0 .0
I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
495 .0400 0723 04 59 .30 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I I
202.154 50.686 .611 51,297 1.68 .97 .01 51.31 .00 .32 4.67 .010 1.000 3.00 0 .0
I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
702 .0400 0636 04 61 .28 .69 .200 00 3.00 TRAP
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I I I I I I I I I I I I
202.856 50.714 .629 51.343 1.68 .93 .01 51.36 .00 .32 4.77 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
1.075 .0400 0559 06 63 .26 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I
203.931 50.757 .647 51.405 1.68 -Be .01 51.42 .00 .32 4.88 .010 1.000 3.00 0 .0
1.069 .0400 0503 05 65 .25 .69 .200 00 3.00 TRAP
I I I I I I I I I I I I I
205.000 50.800 .659 51.459 1.68 .86 .01 51.47 .00 .32 4.96 .010 1.000 3.00 0 .0
I- I-I- I- I- -I- -I- I- -I-I-I- -I- -I- I-
k
Page 3
Hydrology Maps
Reference Material
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HYDROLOGY EXHIBIT
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A.P.N. 919-240-001
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