Each model was run iteratively with different flow rates to determine when the river overtopped. All cross sections were evaluated for overtopping every time the simulation was run. Each model began to overtop the bank at the same cross section, which had a minimum bank elevation of 842.3 feet above mean sea level. The pre-dredged river was found to be able to convey a flow rate of up to 350 cfs, the river with 50 feet of dredging was able to convey 550 cfs, and the river dredged bank to bank could convey 800 cfs. It should be noted that the extent of overtopping was not evaluated, just the presence of it. The pictures to the right show the different cross sections at their respective maximum flow rates. This particular cross section had dredging from bank to bank for both the 50 foot model as well as the completely dredged model since it is narrower than 50 feet.

 

The three models were also run with the 10-year flood flow, 700 cfs. The pre-dredged model had a maximum water surface elevation of 845.14 feet at this flow, the 50 foot dredging model had an elevation of 843.82 feet, and the bank to bank dredging model had an elevation of 843.49 ft. The 50 feet of dredging provided a 1.3 feet reduction in water surface, and the bank to bank dredging  further provided .3 feet in water surface reduction for the 10-year storm.