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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /> Tab le 8-2 <br /> Keesee Di tch <br /> Maximum Irrigation Efficiency Analysis Components <br /> Nov Dec Jan Feb Mar Apr Ilay Jun Jul Aug Sep Oct <br />Typical Diversion (cfs) 8 7 5 6 6 12 13 "13 14 13 11 9 <br />Ditch Seepage (%) 10 11 12 11 11 9 9 9 8 9 9 10 <br />Delivery EffiCiency (%) 90 89 88 89 89 91 91 91 92 91 91 90 <br />Field Efficiency (%) 70 65 60 65 70 75 78 78 78 78 78 75 <br />Maximum Efficiency (%) 63 56 53 58 62 68 71 71 72 71 71 68 <br /> <br />NOTES: - Typical diversion rates based on 1950 - 1987 diversion records. <br /> <br />- Ditch seepeage based on Horstell (1976) method and Figure 8-1. <br /> <br />- Field efficiency based on Colorado Irrigation Guide (SCS, 1979) methodology and <br />assumption of reduced efficiency for non-irrigation season months. <br /> <br />- Maximum irrigation efficiency for total irrigation system obtained by multiplying <br />delivery efficiency times field efficiency. <br /> <br />HRS Hater Consultants, Inc. <br />82046-02 September, 1988 <br />