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Irrigation Water Requirements <br />Crop Data Summary <br />Job: Rifle ET <br />Location: Rifle, Colorado <br />By: RH Nichols <br />Weather Station: RIFLE <br />Latitude: 3932 Longitude: 10748 <br />Computation Method: Blaney Criddle (TR21) <br />Crop Curve: Blaney Criddle Perennial Crop <br />Begin Growth: 4!8 End Growth: 10/25 <br />Crop: Grass Hay <br />County: Garfield, CO <br />Date: 08/02101 <br />Sta No: C07031 <br />Elevation: 5320 feet above sea level <br />Net irrigation application: 1 inches <br />Estimated carryover moisture used at season: <br />Begin:0 inches End:O inches <br />~ <br />Total Dry Year Normal Year <br /> <br />Monthl g0% Chance (1) 50% Chance (1) Average Peak <br /> y D <br />il il <br />D <br /> <br />Month <br />ET a <br />y y <br />a <br /> Effective Net Inigation, Effective Net Irrigation ETc ETPk <br /> (3) Precipitation Reqirements' Precipitation Reqirements <br /> inches inches inches (2) inches inches (2) inches inches <br />,lanuary 0.00 0.00 0.00 0,00 0.00 0.00 <br />February 0.00 0.00 0.00 0.00 0.00 0.00 <br />I March 0.00 0.00 0.00 0.00 0.00 0.00 <br />~ April 1.25 0.25 1.00 0.33 0.91 0.06 <br />May 3.75 0.42 3.34 0.56 3.19 0.12 <br />.June 5.52 0.40 5.13 0.54 4.99 0.18 <br />~ July 6.98 0.48 6.50 0.64 6.33 0.23 <br />August 6.02 0.47 5.55 0.63 5.39 0.19 <br />I <br />September <br />3.69 <br />0.47 <br />3.22 <br />0.63 <br />3.06 <br />0.12 <br />October 1.61 0.39 1.22 0.53 1.08 0.06 <br />November 0.00 0.00 0.00 0.00 0.00 0.00 <br />December 0.00 0.00 0.00 0.00 0.00 0.00 <br />TOTAL 28.81 2.87 25.95 3.85 24.96 <br />0.14 <br />0.22 <br />0.28 <br />0.24 <br />0.14 <br />(1) For 80 percent occurrence, growing season effective precipitation will be equaled or exceeded 8 out of 10 <br />years. For 50 percent chance occurrence, effective precipitation will be equaled or exceeded 1 out of 2 years. <br />I;3) ET Evapotranspiration) is adjusted upwards 10% per 1000 meters above sea level. <br />'Date: 6/15/04 <br />