Use ONLINE CONCEPTUAL OVERLAND to calculate the following overland flow hydrographs::

1. Using the Horton equation, calculate the rising limb of an overland flow hydrograph. Use plane length L = 100; plane slope S_o = 0.01; rainfall excess i = 36 mm/hr; and Manning n = 0.06.

2. Using the Horton equation, calculate the receding limb of an overland flow hydrograph. Use plane length L = 100; plane slope S_o = 0.01; rainfall excess i = 36 mm/hr; and Manning n = 0.06.

3. Using the Izzard equation, calculate the rising limb of an overland flow hydrograph. Use plane length L = 100; plane slope S_o = 0.01; rainfall excess i = 36 mm/hr; and water temperature T = 20°C.