The Kirpich (1940) empirical formula for the time of concentration of a
channelised catchment, in the SI form with length in metres. Time of
concentration is the time for water to travel from the hydraulically most
distant point to the outlet, a key control on peak discharge timing.
Usage
tc_kirpich(length_m, slope)
Arguments
- length_m
Flow-path length in metres.
- slope
Channel slope (dimensionless, m/m).
Value
Time of concentration in minutes.
References
Kirpich, Z. P. (1940) Time of concentration of small
agricultural watersheds. Civil Engineering 10(6), 362.
Examples
tc_kirpich(1500, 0.05)
#> [1] 17.23937