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MCU14/0106 & OPW15/0001 Appendix E - Stormwater Management Plan
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Flow Comparison
ARI Node H vs Node C
(Years) Existing Case EX04 Unmitigated Case DE10 Mitigated Case DE17 Impact Impact Impact Impact
Flow (m3/s) Critical Flow (m3/s) Critical Flow (m3/s) Critical (Existing v (Existing v (Existing v (Existing v
Duration Duration Duration Unmitigated) Unmitigated) Mitigated) Mitigated)
(min) (min) (min) (m3/s) (%) (m3/s) (%)
2 0.3 60 min 0.5 25 min 0.5 25 min 0.2 67% 0.2 67%
5 0.5 25 min 0.8 60 min 0.8 60 min 0.3 60% 0.3 60%
10 0.6 60 min 0.9 90 min 0.9 90 min 0.3 50% 0.3 50%
20 0.7 60 min 1.1 90 min 1.1 90 min 0.4 57% 0.4 57%
50 0.8 60 min 1.3 60 min 1.3 60 min 0.5 63% 0.5 63%
100 0.9 60 min 1.5 90 min 1.5 60 min 0.6 67% 0.6 67%
Flow Comparison
ARI Node G4b vs B
(Years) Existing Case EX04 Unmitigated Case DE10 Mitigated Case DE17 Impact Impact Impact Impact
Flow (m3/s) Critical Flow (m3/s) Critical Flow (m3/s) Critical (Existing v (Existing v (Existing v (Existing v
Duration Duration Duration Unmitigated) Unmitigated) Mitigated) Mitigated)
(min) (min) (min) (m3/s) (%) (m3/s) (%)
2 0.3 120min 0.0 60 min 0.0 60 min -0.3 -100% -0.3 -100%
5 0.5 120 min 0.1 60 min 0.1 60 min -0.4 -80% -0.4 -80%
10 0.6 90 min 0.1 60 min 0.1 60 min -0.5 -83% -0.5 -83%
20 0.7 90 min 0.1 25 min 0.1 25 min -0.6 -86% -0.6 -86%
50 0.9 90 min 0.1 60 min 0.1 60 min -0.8 -89% -0.8 -89%
100 1.0 90 min 0.1 60 min 0.1 60 min -0.9 -90% -0.9 -90%
Flow Comparison
ARI Nodes G4b & H vs B & C
(Years) Existing Case EX04 Unmitigated Case DE10 Mitigated Case DE17 Impact Impact Impact Impact
Flow (m3/s) Critical Flow (m3/s) Critical Flow (m3/s) Critical (Existing v (Existing v (Existing v (Existing v
Duration Duration Duration Unmitigated) Unmitigated) Mitigated) Mitigated)
(min) (min) (min) (m3/s) (%) (m3/s) (%)
2 0.7 - 0.6 - 0.6 - -0.1 -14% -0.1 -14%
5 1.0 - 0.8 - 0.8 - -0.2 -20% -0.2 -20%
10 1.2 - 1.0 - 1.0 - -0.2 -17% -0.2 -17%
20 1.4 - 1.2 - 1.2 - -0.2 -14% -0.2 -14%
50 1.7 - 1.4 - 1.4 - -0.3 -18% -0.3 -18%
100 1.9 - 1.6 - 1.6 - -0.3 -16% -0.3 -16%
Flow Comparison
ARI Node Culvert
(Years) Existing Case EX04 Unmitigated Case DE10 Mitigated Case DE17 Impact Impact Impact Impact
Flow (m3/s) Critical Flow (m3/s) Critical Flow (m3/s) Critical (Existing v (Existing v (Existing v (Existing v
Duration Duration Duration Unmitigated) Unmitigated) Mitigated) Mitigated)
(min) (min) (min) (m3/s) (%) (m3/s) (%)
2 3.0 25 min 4.5 25 min 3.1 60 min 1.5 50% 0.1 3%
5 3.9 25 min 6.2 25 min 3.7 60 min 2.3 59% -0.2 -5%
10 4.4 25 min 7.0 25 min 4.0 60 min 2.6 59% -0.4 -9%
20 5.1 25 min 8.0 25 min 4.8 60 min 2.9 57% -0.3 -6%
50 5.5 60 min 8.5 60 min 5.6 60 min 3.0 55% 0.1 2%
100 6.3 60 min 9.3 60 min 6.4 60 min 3.0 48% 0.1 2%
Flow Comparison
ARI Node SINK
(Years) Existing Case EX04 Unmitigated Case DE10 Mitigated Case DE17 Impact Impact Impact Impact
Flow (m3/s) Critical Flow (m3/s) Critical Flow (m3/s) Critical (Existing v (Existing v (Existing v (Existing v
Duration Duration Duration Unmitigated) Unmitigated) Mitigated) Mitigated)
(min) (min) (min) (m3/s) (%) (m3/s) (%)
2 3.7 - 5.1 - 3.7 - 1.4 38% 0.0 0%
5 4.9 - 7.0 - 4.5 - 2.1 43% -0.4 -8%
10 5.6 - 8.0 - 5.0 - 2.4 43% -0.6 -11%
20 6.5 - 9.2 - 6.0 - 2.7 42% -0.5 -8%
50 7.2 - 9.9 - 7.0 - 2.7 38% -0.2 -3%
100 8.2 - 10.9 - 8.0 - 2.7 33% -0.2 -2%
O:\J13041\XPSTORM\Results\Results.E04.DE08.DE17.xls\WBNM.Compare.Mit
8/05/2015,12:29 PM
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