June 2022 G-01483.84-017-R-Rev0 Because the 41 Table 17: Initial Stage Q1 Catchment characteristics and peak runoff estimation. Catchment type Catchment reference Cumulative area (km2) Flow path length (m) Elevation change (m) Time of concentration (mins) Peak flow (m3/s) WRS SW01/02 0.0146 190 26 1.5 0.062 WRS SW10 0.0076 430 44 5.0 0.071 Clean CW North (to culvert crossing 4) 0.041 500 95 4.4 1.821 Clean CW South (to culvert crossing 5 at portal) 0.029 390 77 3.6 1.306 Clean CW Low South to (to culvert crossing 6) 0.031 470 100 4.0 1.386 WRS SW Low South (to culvert crossing 7) 0.001 105 11 1.7 0.058 WRS SW South Haul/Access (to culvert crossing 8) 0.053 975 104 9.3 0.496 Clean CW South East to culvert crossing 9 0.020 332 79 3.0 0.875
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