Chama Errors
Status Report from SWMM GUI
EPA STORM WATER MANAGEMENT MODEL - VERSION 5.2 (Build 5.2.3)
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Example 6
Runoff Treatment
Final Design
WARNING 04: minimum elevation drop used for Conduit C_out
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Analysis Options
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Flow Units ............... CFS
Process Models:
Rainfall/Runoff ........ YES
RDII ................... NO
Snowmelt ............... NO
Groundwater ............ NO
Flow Routing ........... YES
Ponding Allowed ........ NO
Water Quality .......... YES
Infiltration Method ...... HORTON
Flow Routing Method ...... DYNWAVE
Surcharge Method ......... EXTRAN
Starting Date ............ 01/01/2007 00:00:00
Ending Date .............. 01/03/2007 00:00:00
Antecedent Dry Days ...... 5.0
Report Time Step ......... 00:01:00
Wet Time Step ............ 00:01:00
Dry Time Step ............ 01:00:00
Routing Time Step ........ 15.00 sec
Variable Time Step ....... YES
Maximum Trials ........... 8
Number of Threads ........ 1
Head Tolerance ........... 0.005000 ft
************************** Volume Depth
Runoff Quantity Continuity acre-feet inches
************************** --------- -------
Total Precipitation ...... 889.314 366.917
Evaporation Loss ......... 0.000 0.000
Infiltration Loss ........ 1.658 0.684
Surface Runoff ........... 888.471 366.569
Final Storage ............ 0.113 0.047
Continuity Error (%) ..... -0.104
************************** Cesium
Runoff Quality Continuity LogN
************************** ----------
Initial Buildup .......... 14.593
Surface Buildup .......... 13.982
Wet Deposition ........... 0.000
Sweeping Removal ......... 0.000
Infiltration Loss ........ 10.233
BMP Removal .............. 0.000
Surface Runoff ........... 14.706
Remaining Buildup ........ -6.740
Continuity Error (%) ..... -4.403
************************** Volume Volume
Flow Routing Continuity acre-feet 10^6 gal
************************** --------- ---------
Dry Weather Inflow ....... 0.000 0.000
Wet Weather Inflow ....... 888.353 289.483
Groundwater Inflow ....... 0.000 0.000
RDII Inflow .............. 0.000 0.000
External Inflow .......... 0.000 0.000
External Outflow ......... 11.683 3.807
Flooding Loss ............ 876.643 285.667
Evaporation Loss ......... 0.000 0.000
Exfiltration Loss ........ 0.000 0.000
Initial Stored Volume .... 0.000 0.000
Final Stored Volume ...... 0.014 0.004
Continuity Error (%) ..... 0.002
************************** Cesium
Quality Routing Continuity LogN
************************** ----------
Dry Weather Inflow ....... 0.000
Wet Weather Inflow ....... 14.703
Groundwater Inflow ....... 0.000
RDII Inflow .............. 0.000
External Inflow .......... 0.000
External Outflow ......... 13.157
Flooding Loss ............ 14.681
Exfiltration Loss ........ 0.000
Mass Reacted ............. 0.000
Initial Stored Mass ...... 0.000
Final Stored Mass ........ 8.627
Continuity Error (%) ..... 2.111
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Time-Step Critical Elements
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Link C11 (25.49%)
Link C_out (10.86%)
Link C7 (2.98%)
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Highest Flow Instability Indexes
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Link C11 (3)
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Most Frequent Nonconverging Nodes
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Node J11 (0.01%)
Node O2 (0.01%)
Node J9 (0.01%)
Node J10 (0.01%)
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Routing Time Step Summary
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Minimum Time Step : 0.50 sec
Average Time Step : 10.63 sec
Maximum Time Step : 15.00 sec
% of Time in Steady State : 0.00
Average Iterations per Step : 2.00
% of Steps Not Converging : 0.01
Time Step Frequencies :
15.000 - 7.597 sec : 68.47 %
7.597 - 3.848 sec : 3.99 %
3.848 - 1.949 sec : 5.29 %
1.949 - 0.987 sec : 22.19 %
0.987 - 0.500 sec : 0.06 %
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Analysis begun on: Tue Aug 1 10:42:13 2023
Analysis ended on: Tue Aug 1 10:42:13 2023
Total elapsed time: < 1 sec