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CONSUMPTIVE USE OF: NATIVE GRASS REVEGETATION <br />(BLANEY-GRIDDLE METHOD) KEENESBURG COAL MINE <br /> <br /> <br />Month <br />Avg <br />Tem 2 <br />Daytime <br />Hours 0 <br />C.U. <br />Factor ® <br />Crop <br />Co-ef, ~ <br />% of Mo. <br />Irri ated © <br />C.U. <br />Inches ~ <br />Precip. <br />Inches 0 <br />C.U. of Irr.Water <br />Inches feet <br />Effective <br />Preci . <br />May 24th 56.3 10.01 5.64 .90 3 .15 .34 .05 .10" <br />June 66.4 10.09 6.70 .92 47 2.90 1.21 2.06 .84" <br />July 72.8 10.22 7.44 .92 10 .68 .89 .12 .56" <br />ugust 71.3 9.55 6.81 .91 21 1.30 1.28 .50 .80 <br />Sept.6th 62.7 8.39 5.26 .87 3 .14 -- .14 -0- <br /> <br />!:H/5nrhac total <br />10 Avg. Temp. of Denver, CO from S.C.S. Publication T.R, No. 21 <br />Q2 Taken from page 9 of T.R.No.21 - S.C.S. publication. <br />O3 Product of Avg. Temp. x °o of daytime hours. •, <br />® Crop co-efficient for pasture grass; taken from page 80 of T.R.No.21 - S.C.S. Publication <br />O5 Info taken from "Precipitation & Irrigation Records" for Keenesburg Mine. Published by C.S.U. <br />Keenesburg Coal Mine Report - Table II - L8. <br />© Product of C.U. Factor x Crop Co-efficient x % of month irrigated. <br />O7 Info. taken from "Precipitation Z Irrigation Records" for Keenesburg I~1ine. Report by <br />® Taken from graph on page 26 of T. R.No.21 (monthly precipitation vs. monthly cons, use). <br />O9 Difference between consumptive use and effective precipitation. <br />