N.H. Code Admin. R. Env-Sw 104.61
“Time of concentration” means the time it takes for runoff to travel from the hydraulically most distant point of the watershed to the design point.
Source. (See Revision Note #1 at chapter heading for Env-Sw 100) #8460-B, eff 10-28-05; ss by #14103, effective 10-23-24 (formerly Env-Sw 104.52) (see Revision Note #2 at chapter heading for Env-Sw 100)