Cypress Creek has a rectangular cross section with a bottom width of 200 ft, n = 0.03, and S0 = 0.001 ft/ft. East Creek has the same characteristics except that the bottom width is 100 ft. The 100- yr storm hydrographs are shown for both creeks. The assumption is made that the flow in the creeks remains constant above point C and that the 100-yr hydrograph for Cypress Creek includes the inflow from East Creek at point C.