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Munger Creek at Centra] Facilities Area <br />Comparison of 100 Year Reconstructed Channel and Existing Channel <br />Area of New Channel <br />5.5' is minimum channel depth <br />t <br />1 ~ 5.5' ~ 1' <br />2 ~----- 15'--~ 2 <br />A = (15 x 5.5) + (11 x 5.5) = 143 ft.z <br />S = 0.0251 <br />n = 0.050 Q = 1n49 AR2/351/2 <br />P = 39.6 ft. <br />R = 3.61 <br />Q = 0.05 143 (3.61)2/3 (0.0257)1/2 <br />Q = 1588.8 cfs Maximum cfs new channel can carry without <br />overflow at some point. <br />• Area of Old Channel - Upstream <br />Section E-E is the closest upstream channel given. This section can be <br />found in Appendix Miii of original permit application. <br />30'' <br />7' <br />~- 7'--+ <br />A = (7 x 7) + (11.5 x 7) = 129.5 ft.2 <br />S = 0.025 <br />n = 0.05 Q = 1n49 AR2/351/2 <br />P = 3.82 ft. <br />Q = 0.05 129.5 (3.82)2/3 (0.025)1/2 <br />Q = 1491.07 cfs <br />• Since the relocated channel ends at the confluence of East Salt Creek and <br />Munger Creek, no downstream calculations are required. <br />