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Fair Haven City Zoning Code

§ 30-9.3H

Exhibit H.

[2002 Code § 16.36.030H]
RUNOFF COEFFICIENTS AMC II
Land Use Description
Hydro. Soil Group
A
B
C
D
Cultivated land:
Without conservation treatment
0.49
0.67
0.81
0.88
With conservation treatment
0.27
0.43
0.61
0.67
Pasture or range land:
Poor condition
0.38
0.63
0.78
0.84
Good condition
—
0.25
0.51
0.65
Meadow: good condition
—
—
0.44
0.61
Wood or forest land:
Thin stand, poor cover, no mulch
—
—
0.59
0.79
Good cover
—
—
0.45
0.59
Open spaces, lawns, parks, golf courses, cemeteries
Good condition: grass cover on 75% or more of the area
—
0.25
0.51
0.65
Fair condition: grass cover on 50% to 75% of the area
—
0.45
0.63
0.74
Commercial and business areas (85% impervious)
0.84
0.90
0.93
0.96
Industrial districts (72% impervious)
0.67
0.81
0.88
0.92
Residential:
Average lot size — Average % Impervious
1/8 acre or less
65
0.59
0.76
0.86
0.90
1/4 acre
38
0.26
0.55
0.70
0.80
1/3 acre
30
—
0.49
0.67
0.78
1/2 acre
25
—
0.45
0.65
0.76
1 acre
20
—
0.41
0.63
0.74
Paved parking lots, roof, driveways, etc.
0.99
0.99
0.99
0.99
Streets and roads:
Paved with curbs and storm sewers
0.99
0.99
0.99
0.99
Gravel
0.57
0.76
0.84
0.88
Dirt
0.49
0.69
0.80
0.84
Source: New Jersey Department of Environmental Protection, Technical Manual for Stream Encroachment (Trenton, New Jersey: Department of Environmental Protection, 1984), p. 51.