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Link to this [[Wet detention pond - Channel protection / water quality outlet configuration|table]]
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Revision as of 01:53, 29 March 2013

Wet detention pond - Channel protection / water quality outlet configuration
Link to this table

Design methodology
1-yr 24-hr "Kerplunk" (K124) 1-yr 24-hr routed (R124) 1/2 Pre-development 2-yr 24-hr peak "Kerplunk" (R224) 1/2 Pre-development 2-yr 24-hr peak routed (R224)
Orifice diameter (inches) 10.5 6.9 10.0 11.6
Oriface elevation (ft) 105.0 105.0 105.0 105.0
Surface area at orifice elevation (ac) 0.6 0.6 0.6 0.6
Peak discharge per design event (cfs) 6.4 2.1 5.8 5.8
Peak water elevation per design event (ft) 107.9 108.2 108.7 108.5

Note that the routed method for the 1-year design (R124) is much less than the kerplunk method (K124) due to the more constricted orifice.