Sediment trap sizing table Sediment trap sizing table

Sediment trap sizing table
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Drainage area (ac)	Total Volume (ft3)	Wet Volume (ft3)	Dry Volume (ft3)	Minimum Depth (ft)	Depth of Permanent Pool (ft)	Minimum Bottom Length (ft)	Minimum Bottom Width
1	3600	1800	1800	2.5	1.5	46	23
2	7200	3600	3600	2.75	1.5	64	32
3	10800	5400	5400	3.0	1.75	76	38

Table assumes 2:1 side slopes; Minimum depth is from trap bottom to weir crest and includes both wet and dry storage