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Site Catchment Flowpaths for DRAINS Modelling Project number: 20220146 Calculations: B. Parry Street Address: 59 Kabi Rd Locality: Cooroy, Noosa Shire Council Date: 29/08/2022 Catchment A Sheet Flow Component (Using Fig 4.4 QUDM, Overland Sheet Flow Times) Length 140 m top 26 m AHD bottom 11 m AHD slope 0.107142857 m/m tc 20 min Rural Flow (Using Table 4.6.6 Modified Stream Velocity) Flow path 820 m top rl 11 m AHD bottom rl 5.5 m AHD Bed Slope 0.7% Assumed Velocity 1.5 m/s (Steep Country, 8-15%, floodplain storage limited) tc 9.11 Min Catchment Tc 30.00 min Catchment B Sheet Flow Component (Using Fig 4.4 QUDM, Overland Sheet Flow Times) Length 187 m top 26 m AHD bottom 12 m AHD slope 0.07486631 m/m tc 22 min Rural Flow (Using Table 4.6.6 Modified Stream Velocity) Flow path 1095 m top rl 12 m AHD bottom rl 2.8 m AHD Bed Slope 0.8% Assumed Velocity 1.5 m/s (Hilly, 4-8%, floodplain storage limited) tc 12.17 Min Catchment Tc 35.00 min
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