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Committee of the Whole/Documents/Conceptual Servicing Brief Appendix B: PCSWMM Storm Water Model Input Parameters
Appendix

Conceptual Servicing Brief Appendix B: PCSWMM Storm Water Model Input Parameters

December 14, 2021Pages 244–2483 sections

Detailed technical data parameters used to model pre- and post-development storm water runoff scenarios.

2. APPROVAL OF AGENDA (motion to approve)
Victoria-Gonzales IDF data0.3804 ha total subcatchment areaPost-development imperviousness modeled at 90%

APPENDIX B

Page 244–248

PCSWMM STORM WATER MODEL

Page 244–248

INPUT PARAMETERS

2-year storm pre-development attributes:

PCSWMM Subcatchment S1 input parameters for 2-year storm pre-development scenario
PCSWMM Subcatchment S1 input parameters for 2-year storm pre-development scenario
Parameter Value
Infiltration
Infiltration Method CURVE_NUMBER
Curve Number 90
Conductivity (mm/h) 0
Drying Time (days) 7
Attributes
Name S1
X-Coordinate 721.393
Y-Coordinate 1106.339
Description
Tag
Rain Gage SCS_Type_IA_44.9mm
Outlet OF1
Area (ha) 0.3804
Width (m) 29.262
Flow Length (m) 130
Slope (%) 3.65
Imperv. (%) 28.76
N Imperv 0.012
N Perv 0.15
Dstore Imperv (mm) 2.5
Dstore Perv (mm) 5
Zero Imperv (%) 25
Subarea Routing PERVIOUS
Percent Routed (%) 100
Curb Length 0
N-Perv Pattern
Dstore Pattern
Infil. Pattern
Snow Pack
LID Controls 0
LID Names
Groundwater NO
Erosion NO
Results
Precipitation (mm) 44.9
Runon (mm) 0

2-year storm post-development attributes:

PCSWMM Subcatchment S1 input parameters for 2-year storm post-development scenario
PCSWMM Subcatchment S1 input parameters for 2-year storm post-development scenario
Parameter Value
Infiltration
Infiltration Method CURVE_NUMBER
Curve Number 90
Conductivity (mm/h) 0
Drying Time (days) 7
Attributes
Name S1
X-Coordinate 721.393
Y-Coordinate 1106.339
Description
Tag
Rain Gage SCS_Type_IA_44.9mm
Outlet OF1
Area (ha) 0.3804
Width (m) 29.262
Flow Length (m) 130
Slope (%) 3.65
Imperv. (%) 90
N Imperv 0.012
N Perv 0.15
Dstore Imperv (mm) 2.5
Dstore Perv (mm) 5
Zero Imperv (%) 25
Subarea Routing IMPERVIOUS
Percent Routed (%) 100
Curb Length 0
N-Perv Pattern
Dstore Pattern
Infil. Pattern
Snow Pack
LID Controls 0
LID Names
Groundwater NO
Erosion NO
Results
Precipitation (mm) 44.9
Runon (mm) 0

10-year storm pre-development attributes:

PCSWMM Subcatchment S1 input parameters for 10-year storm pre-development scenario
PCSWMM Subcatchment S1 input parameters for 10-year storm pre-development scenario
Parameter Value
Infiltration
Infiltration Method CURVE_NUMBER
Curve Number 90
Conductivity (mm/h) 0
Drying Time (days) 7
Attributes
Name S1
X-Coordinate 721.393
Y-Coordinate 1106.339
Description
Tag
Rain Gage SCS_Type_IA_75.3mm
Outlet OF1
Area (ha) 0.3804
Width (m) 29.262
Flow Length (m) 130
Slope (%) 3.65
Imperv. (%) 28.76
N Imperv 0.012
N Perv 0.15
Dstore Imperv (mm) 2.5
Dstore Perv (mm) 5
Zero Imperv (%) 25
Subarea Routing PERVIOUS
Percent Routed (%) 100
Curb Length 0
N-Perv Pattern
Dstore Pattern
Infil. Pattern
Snow Pack
LID Controls 0
LID Names
Groundwater NO
Erosion NO
Results
Precipitation (mm) 75.3
Runon (mm) 0

10-year storm post-development attributes:

PCSWMM Subcatchment S1 input parameters for 10-year storm post-development scenario
PCSWMM Subcatchment S1 input parameters for 10-year storm post-development scenario
Parameter Value
Infiltration
Infiltration Method CURVE_NUMBER
Curve Number 90
Conductivity (mm/h) 0
Drying Time (days) 7
Attributes
Name S1
X-Coordinate 721.393
Y-Coordinate 1106.339
Description
Tag
Rain Gage SCS_Type_IA_75.3mm
Outlet OF1
Area (ha) 0.3804
Width (m) 29.262
Flow Length (m) 130
Slope (%) 3.65
Imperv. (%) 90
N Imperv 0.012
N Perv 0.15
Dstore Imperv (mm) 2.5
Dstore Perv (mm) 5
Zero Imperv (%) 25
Subarea Routing IMPERVIOUS
Percent Routed (%) 100
Curb Length 0
N-Perv Pattern
Dstore Pattern
Infil. Pattern
Snow Pack
LID Controls 0
LID Names
Groundwater NO
Erosion NO
Results
Precipitation (mm) 75.3
Runon (mm) 0
Page 244–248
Extracted from: 2021 12 14 Committee of the Whole Agenda - Agenda - Pdf