peak {VFS}

Rational method to calculate peak discharge

Description

Very simple estimate of peak discharge.

Usage

peak(intensity, area, c = 0.25)

Arguments

intensity

Precipitation intensity (mm/hr).

area

Field area (ha).

c

Runoff coefficient, related to slope, soil type, and land cover (0-1). Forest may be 0.05 - 0.25, while paved surfaces may be 0.95.

Value

Peak discharge (m^3/s).

Author(s)

Sarah Goslee

References

Hromadka, T. V, II and Whitley, R. J. (1994) The rational method for peak flow rate estimation. Water Res Bull 30(6), 1001–1009.

Examples

    # peak discharge from a grassy meadow
    peakd.meadow <- peak(intensity = 55, area = 1, c = 0.1)

    # peak discharge from an urban area
    peakd.urban <- peak(intensity = 55, area = 1, c = 0.8)