The following stormwater management design criteria provide
a compilation of components recommended for effective stormwater management.
The criteria reflect a moderate level of restrictions in its standards
and are based on technically sound principles. The design criteria
are provided to assist both municipalities and designers to implement
good stormwater management systems.
|
Return Interval
(years)
|
24-Hour Rainfall Total
(inches)
| |
---|---|---|
1
|
2.09
| |
2
|
2.49
| |
10
|
3.50
| |
25
|
4.14
| |
50
|
4.67
| |
100
|
5.22
|
The NRCS antecedent runoff condition II (ARC II, previously
AMC II) must be used for all simulations. The use of continuous simulation
models that vary the ARC are not permitted for stormwater management
purposes.
|