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91 <br />0 <br />C. <br />d. <br />14 <br />TYPE OF C8A_N_NhL AND DESCRIPTION <br />EXCAVATED OR DREDGED <br />Earth, straight and uniform <br />1. Clean, recently completed <br />2. Clean, after weathering <br />3. Gravel, uniform section, clean <br />4. With short grass, few weeds <br />Earth, winding and sluggish <br />I . No vegetation <br />2. Grass, some weeds <br />3. Dense weeds or aquatic plans in deep <br />channels <br />4. Earth bottom and rubble sides <br />5. Stony bottom and weedy banks <br />6. Cobble bottom -and clean sides <br />Draglinc-c-xcavated or dredged <br />11. No,�,eoelation <br />2. Light brush on banks <br />Rock cut,; <br />I Smooth and uniform <br />2. Jagged and irregular <br />Channels not maintained, weeds and brush <br />1. Dense weeds, high as flow depth <br />2. Clean bottom, brush on sides <br />3. Sarre as abQvc, but highest state of flow <br />4. Dense brush, high state <br />MINIMUM NORMAL MAXIMUM <br />0.016 <br />0.018 <br />0.022 <br />0,022 <br />0.023 <br />0.025 <br />0.030 <br />MW <br />0.025 <br />0.035 <br />0.050 <br />0.040 <br />0.0-45 <br />0,080 <br />REFERENCE: <br />CHOW, V.T.. OP .NEL HYDRAULICS <br />McGRAW HILL BOOK COMPANY 1959 <br />0.019 <br />0.020 <br />0.022 <br />0.025 <br />0.025 <br />0.030 <br />0,027 <br />0.033 <br />0.025 <br />0.030 <br />0.030 <br />0.033 <br />0.035 <br />0.040 <br />0.030 <br />0.035 <br />0.035 <br />0.046 <br />0.040 <br />0.050 <br />0.028 0.033 <br />0.050 0,060 <br />0.03-1; 0.040 <br />0.040 0.050 <br />0.090 <br />0.120 <br />0.050 <br />0,080 <br />0.070 <br />0.110 <br />0.100 <br />0.140 <br />