Determine the time of concentration, tc, for use in the NRCS Method for a watershed located in Nashville, Tennessee having a hydraulic path described as follows:
Overland flow: woods (light underbrush), 100’ long, 3.0% average slope
Shallow concentrated flow: 1,200’ long, 4.0% average slope
Stream flow: 1,500’ long, 0.75% average slope
Note: For a stream cross section, use the one in problem 6.
Determine time of concentration, tc, for use in the NRCS Method for a drainage basin located near Bismarck, North Dakota, having a hydraulic path described as follows:
Overland flow: average grass, 100’ long, 1.6% average slope
Shallow concentrated flow: 680’ long, 3.2% average slope
Stream flow: 2950’ long, 0.61% average slope
Average cross section: