SWMM 5 Watershed and Water Quality Information for the Earth
Watershed Management for the Earth
Annotated SWMM 5.0.013 Output File
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1. Output File Title and Header Lines
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EPA STORM WATER MANAGEMENT MODEL - VERSION 5.0 (Build 5.0.013)
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SW 1 0 9A1 'BROWARD COUNTY Multi FAMILY SITE - Runoff example # 47'A2 'RUNO
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1. Output File Title and Header Lines
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Analysis Options
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Flow Units ............... CFS
Infiltration Method ...... GREEN_AMPT
Flow Routing Method ...... DYNWAVE
Starting Date ............ JUL-15-1977 06:30:00
Ending Date .............. JUL-15-1977 10:15:00
Antecedent Dry Days ...... 7.0
Report Time Step ......... 00:05:00
Wet Time Step ............ 00:05:00
Dry Time Step ............ 00:05:00
Routing Time Step ........ 30.00 sec
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1. Output File Title and Header Lines
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Element Count
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Number of rain gages ...... 1
Number of subcatchments ... 4
Number of nodes ........... 5
Number of links ........... 4
Number of pollutants ...... 5
Number of land uses ....... 1
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1. Output File Title and Header Lines
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Pollutant Summary
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Ppt. GW Kdecay
Name Units Concen. Concen. 1/days CoPollutant
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COD MG/L 5.00 0.00 0.00
TOT.SOL MG/L 5.00 0.00 0.00
TOT.NIT MG/L 0.30 0.00 0.00
TSS MG/L 5.00 0.00 0.00
O-PO4-P MG/L 0.00 0.00 0.00
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1. Output File Title and Header Lines
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Landuse Summary
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Sweeping Maximum Last
Name Interval Removal Swept
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HOUSING 0.00 0.00 0.00
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1. Output File Title and Header Lines
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Raingage Summary
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Data Interval
Name Data Source Type hours
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GAGE1 RainSeries1 INTENSITY 0.08
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1. Output File Title and Header Lines
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Subcatchment Summary
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Name Area Width %Imperv %Slope Rain Gage Outlet
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CA-1 5.00 600.00 39.00 2.7000 GAGE1 P001
CA-7 1.60 200.00 48.60 2.7000 GAGE1 P005
CA-8 4.57 500.00 46.70 2.7000 GAGE1 P009
CA-11 3.58 600.00 47.00 2.7000 GAGE1 P011
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1. Output File Title and Header Lines
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Node Summary
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Invert Max. Ponded External
Name Type Elev. Depth Area Inflow
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P001 JUNCTION 1.10 20.00 0.0
P005 JUNCTION 1.58 20.00 0.0
P009 JUNCTION 3.60 20.00 0.0
P011 JUNCTION 2.89 20.00 0.0
Outlet OUTFALL 0.00 4.00 0.0
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1. Output File Title and Header Lines
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Link Summary
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Name From Node To Node Type Length %Slope Roughness
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P001 P001 Outlet CONDUIT 220.0 0.5000 0.0150
P005 P005 P001 CONDUIT 240.0 0.2000 0.0150
P009 P009 P005 CONDUIT 505.0 0.4000 0.0240
P011 P011 P005 CONDUIT 655.0 0.2000 0.0240
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1. Output File Title and Header Lines
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Cross Section Summary
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Full Full Hyd. Max. No. of Full
Conduit Shape Depth Area Rad. Width Barrels Flow
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P001 CIRCULAR 4.00 12.57 1.00 4.00 1 88.03
P005 CIRCULAR 3.00 7.07 0.75 3.00 1 25.85
P009 CIRCULAR 2.25 3.98 0.56 2.25 1 10.61
P011 CIRCULAR 2.50 4.91 0.63 2.50 1 9.94
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1. Output File Title and Header Lines
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************************** Volume Depth
Runoff Quantity Continuity acre-feet inches
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Total Precipitation ...... 2.050 1.668
Evaporation Loss ......... 0.031 0.025
Infiltration Loss ........ 1.010 0.822
Surface Runoff ........... 1.001 0.815
Final Surface Storage .... 0.030 0.025
Continuity Error (%) ..... -1.116
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1. Output File Title and Header Lines
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************************** COD TOT.SOL TOT.NIT TSS O-PO4-P
Runoff Quality Continuity lbs lbs lbs lbs lbs
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Initial Buildup .......... 5056.849 13379.165 125.370 13379.165 103.603
Surface Buildup .......... 25.386 23.165 0.450 23.165 0.347
Wet Deposition ........... 27.850 27.850 1.671 27.850 0.011
Sweeping Removal ......... 0.000 0.000 0.000 0.000 0.000
Infiltration Loss ........ 13.218 13.218 0.793 13.218 0.005
BMP Removal .............. 0.000 0.000 0.000 0.000 0.000
Surface Runoff ........... 3889.258 13415.981 36.540 13415.795 50.129
Remaining Buildup ........ 1204.513 0.417 90.118 0.417 53.813
Continuity Error (%) ..... 0.061 0.004 0.032 0.006 0.014
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1. Output File Title and Header Lines
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************************** Volume Volume
Flow Routing Continuity acre-feet Mgallons
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Dry Weather Inflow ....... 0.000 0.000
Wet Weather Inflow ....... 1.002 0.326
Groundwater Inflow ....... 0.000 0.000
RDII Inflow .............. 0.000 0.000
External Inflow .......... 0.000 0.000
External Outflow ......... 0.999 0.325
Internal Outflow ......... 0.000 0.000
Evaporation Loss ......... 0.000 0.000
Initial Stored Volume .... 0.000 0.000
Final Stored Volume ...... 0.002 0.000
Continuity Error (%) ..... 0.132
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1. Output File Title and Header Lines
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************************** COD TOT.SOL TOT.NIT TSS O-PO4-P
Quality Routing Continuity lbs lbs lbs lbs lbs
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Dry Weather Inflow ....... 0.000 0.000 0.000 0.000 0.000
Wet Weather Inflow ....... 3677.075 13369.954 34.442 13733.273 46.681
Groundwater Inflow ....... 0.000 0.000 0.000 0.000 0.000
RDII Inflow .............. 0.000 0.000 0.000 0.000 0.000
External Inflow .......... 0.000 0.000 0.000 0.000 0.000
Internal Flooding ........ 0.000 0.000 0.000 0.000 0.000
External Outflow ......... 3520.686 13340.513 32.712 14520.531 44.121
Mass Reacted ............. 0.000 0.000 0.000 0.000 0.000
Initial Stored Mass ...... 0.000 0.000 0.000 0.000 0.000
Final Stored Mass ........ 0.585 0.017 0.010 0.017 0.008
Continuity Error (%) ..... 4.237 0.220 4.993 -5.733 5.466
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1. Output File Title and Header Lines
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Time-Step Critical Elements
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Link P001 (42.09%)
Link P005 (6.83%)
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1. Output File Title and Header Lines
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Highest Flow Instability Indexes
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All links are stable.
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1. Output File Title and Header Lines
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Routing Time Step Summary
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Minimum Time Step : 14.86 sec
Average Time Step : 24.29 sec
Maximum Time Step : 30.00 sec
Percent in Steady State : 0.00
Average Iterations per Step : 2.02
Average Iterations per Step : 2.02
StepCount : 556
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1. Output File Title and Header Lines
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Subcatchment Runoff Summary
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Total Total Total Total Total Total Peak Runoff
Precip Runon Evap Infil Runoff Runoff Runoff Coeff
Subcatchment in in in in in Mgal CFS
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CA-1 1.668 0.000 0.025 0.906 0.727 0.099 5.541 0.436
CA-7 1.668 0.000 0.025 0.762 0.879 0.038 2.136 0.527
CA-8 1.668 0.000 0.025 0.792 0.843 0.105 5.773 0.505
CA-11 1.668 0.000 0.025 0.772 0.871 0.085 4.877 0.522
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System 1.668 0.000 0.025 0.822 0.815 0.326 18.326 0.488
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1. Output File Title and Header Lines
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Subcatchment Washoff Summary
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COD TOT.SOL TOT.NIT TSS O-PO4-P
Subcatchment lbs lbs lbs lbs lbs
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CA-1 1219.569 4548.545 10.672 4548.501 14.812
CA-7 443.881 1455.191 4.361 1455.164 5.936
CA-8 1230.511 4154.249 11.728 4154.169 16.045
CA-11 995.298 3257.996 9.780 3257.961 13.336
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System 3889.258 13415.981 36.540 13415.795 50.129
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1. Output File Title and Header Lines
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Node Depth Summary
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Average Maximum Maximum Time of Max
Depth Depth HGL Occurrence
Node Type Feet Feet Feet days hr:min
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P001 JUNCTION 0.50 1.09 2.19 0 02:28
P005 JUNCTION 0.59 1.34 2.92 0 02:28
P009 JUNCTION 0.46 1.12 4.72 0 02:26
P011 JUNCTION 0.47 1.12 4.01 0 02:27
Outlet OUTFALL 0.48 1.09 1.09 0 02:28
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1. Output File Title and Header Lines
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Node InFlow Summary
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Maximum Maximum Lateral Total
Lateral Total Time of Max Inflow Inflow
Inflow Inflow Occurrence Volume Volume
Node Type CFS CFS days hr:min Mgal Mgal
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P001 JUNCTION 5.51 14.44 0 02:27 0.099 0.325
P005 JUNCTION 2.12 11.25 0 02:26 0.038 0.229
P009 JUNCTION 5.74 5.74 0 02:24 0.105 0.105
P011 JUNCTION 4.85 4.85 0 02:24 0.085 0.085
Outlet OUTFALL 0.00 14.39 0 02:28 0.000 0.325
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Node Surcharge Summary
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No nodes were surcharged.
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Node Flooding Summary
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No nodes were flooded.
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Outfall Loading Summary
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Flow Avg. Max. Total Total Total Total Total Total
Freq. Flow Flow Volume COD TOT.SOL TOT.NIT TSS O-PO4-P
Outfall Node Pcnt. CFS CFS Mgal lbs lbs lbs lbs lbs
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Outlet 97.84 4.48 14.39 0.325 3522.983 13407.048 32.715 14620.392 44.131
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System 97.84 4.48 14.39 0.325 3522.983 13407.048 32.715 14620.392 44.131
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1. Output File Title and Header Lines
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Link Flow Summary
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Maximum Time of Max Maximum Max/ Max/
Flow Occurrence Velocity Full Full
Link Type CFS days hr:min ft/sec Flow Depth
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P001 CONDUIT 14.39 0 02:28 5.16 0.16 0.27
P005 CONDUIT 10.25 0 02:28 3.82 0.40 0.41
P009 CONDUIT 5.30 0 02:26 2.55 0.50 0.54
P011 CONDUIT 4.11 0 02:27 1.77 0.41 0.49
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1. Output File Title and Header Lines
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Flow Classification Summary
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Adjusted --- Fraction of Time in Flow Class ---- Avg. Avg.
/Actual Up Down Sub Sup Up Down Froude Flow
Conduit Length Dry Dry Dry Crit Crit Crit Crit Number Change
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P001 1.00 0.02 0.00 0.00 0.98 0.00 0.00 0.00 0.75 0.0013
P005 1.00 0.02 0.00 0.00 0.98 0.00 0.00 0.00 0.48 0.0032
P009 1.00 0.02 0.00 0.00 0.98 0.00 0.00 0.00 0.27 0.0048
P011 1.00 0.02 0.00 0.00 0.98 0.00 0.00 0.00 0.20 0.0038
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Conduit Surcharge Summary
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No conduits were surcharged.
Analysis begun on: Sat Nov 29 13:12:22 2008
Analysis ended on: Sat Nov 29 13:12:22 2008
Total elapsed time: < 1 sec
Last updated by Robert E Dickinson Nov. 29, 2008.
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Stormwater Management Model (SWMM) Information for watershed water quality, hydrology and hydraulics modelers (not associated with the EPA).
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