Quiz 6

Volume required for a detention basin developed for stormwater management:
Post develop runoff volume - Pre development runoff volume
Pre-development runoff volume
Avergae of post and pre development volumes
None of the answers
avergae of post and pre-development volumes
The CN for wet conditions of soil is
Greater than that for dry condition of the soil
Lesser than that for dry condition
CN value > 100
None of the answers
The following factors do NOT influence Curve Number (CN)
Slope of the watershed
Soil type
Land use
Land use condition
None of the answers
For a given land cover type, the CN is highest for soil type (select one)
A
B
C
D
How any hydrologic soil groups are available or used that used for CN estimation?
4
3
2
5
The practical value of CN for impervious areas is equal to
98
99
100
90
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