REP50256

• Permit No: M1996049
• IBM Index Class Name: Report
• Doc Name: SUBSTITUTE SUPPLY PLAN FOR THE L G EVERIST MARYLAND CREEK RANCH AGGREGATE OPERATION M-96-049
• Media Type: D
• Archive: No

TABLE IA
NET EVAPORATION CALCULATIONS
FOR FIRST YEAR OF OPERATION

Month Monthly
Evaporation
Distribution
(%~a)ro Gross
Evaporation
(inches)t~ Average Year
Precipitation
(inches)o' Effective
Precipitation
(inches)t" Net Uoit
Evaporation
(inches)"' Net Unit
Evaporation
(feet} Total
Evaporation
(acre-feet)j6'
]anuary I.0 0.34 1.06 0.74 0.00 0.00 0.00
February 3.0 1.00 I.OB 0.76 0.24 0.02 0.06
March 6.0 2.01 1.31 0.92 1.09 0.09 0.27
April 9.0 3.02 1.35 0.95 2.07 0.17 0.52
May 12,5 4.19 1.40 0.98 3.21 0.27 0.80
lone 15.5 5.19 1.10 0.77 4.42 0.37 1.11
July 16.0 5.36 1.64 1.15 4.21 0.35 I.OS
August 13.0 4.36 1.63 1.14 3.22 0.27 0.80
September 11.0 3.68 1.28 0.90 2.78 0.23 0.70
October 7.5 2.51 0.83 0.58 1.93 0.16 0.48
November 4.0 1.34 0.97 0.68 0.66 0.06 0.17
December 1.5 0.50 1.10 0.77 0.00 0.00 0.00
Annual 100.0 33.50 14.75 10.34 23.83 1.99 5.96
(1) State Engineds Office distribution above 6500 feet msl (Febmary 28, 1995. Gravel Pit Grneral Criteria Cor Substitute Supply Plans).
(2) From NOAH Technical Release NWS 33 distributed as ptt SEO distribution.
(3) From NOAA Annual Climatological Data, Dillon, Colorado (1952.1992).
(4) Equal to 70 percent of the average year precipitation.
(5) Equal to gross evaporation minus effective precipitation.
(6) Calculated (or 3 surface acres oCcxposed groundwattt in Mining Cell I.