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4 <br />A = area in acres of each wetting furrow <br />A 0 gates) x R x L = ( 18 ) x (19) x ( 14 ) _ (1 - 7) x (2,S) x ac ( 16) <br />43560 43560 43560 <br />Q= Volume of irrigation water to fulfill design (gallon per minute) <br />Gross Irrigation Application x 450 x A <br />T <br />= x450x(16) = (�x450x(G?-75)gpm — ---------- gpm <br />(I I ) U/ ) <br />450 is a conversion constant: <br />450 gpm -'- I acre-inch/hr <br />• <br />SYSTEM EFFICIENCY ( maintenance, cleaning head gate, checking water, farmer needed <br />time off) ... – 10G O lo (23) <br />(N RCS states numerous farmers in the Norwood area do not take a day off, so 100'%, as seen on <br />NRCS design for side roll sprinkler design that DRMS approved) <br />IA' 001) IRRIGATION WORK SHEF Irrigation Design worksheet Project 14nnavio,I)CI-I'd <br />• Attachment 2.05.4(2)(e)-7-8 <br />