2009-04-14_HYDROLOGY - M2000041

• Permit No: M2000041
• IBM Index Class Name: HYDROLOGY
• Doc Date: 4/14/2009
• Doc Name: 2007-2009 Substitute Water Supply Plan Renewal
• From: OSE
• To: Deere & Ault Consultants Inc.
• Permit Index Doc Type: Hydrology Report
• Email Name: BMK
• Media Type: D
• Archive: No

Table 1
EVAPORATIVE LOSSES
Evans #2 Pit
2009 Plan Year
(l) (2) (3) (4) (5) (6) (7)
Plan Year
2009
Month Percent of
Annual
Evaporation Gross Pond
Evaporation'

(inches) Average
Precipitation

(inches)' Effective
Precipitation
70%
(inches) Net Pond
Evaporation

(inches), Net Pond
Evaporation

(acre-feet) Net Pond
Evaporation
0.5 acres
(acre-feet)
April 9.0% 4.52 0.88 0.62 3.90 0.33 0.16
May 12.0% 6.02 1.25 0.88 5.15 0.43 0.21
June 14.5% 7.28 1.25 0.88 6.40 0.53 0.27
July 15.0% 7.53 2.09 1.46 6.07 0.51 0.25
August 13.5% 6.78 1.99 1.39 5.38 0.45 0.22
September 10.0% 5.02 0.90 0.63 4.39 0.37 0.18
October 7.0% 3.51 0.57 0.40 3.12 0.26 0.13
November 4.0% 2.01 0.43 0.30 1.71 0.14 0.07
December 3.0% 1.51 0.42 0.29 1.21 0.10 0.05
January 3.0% 1.51 0.32 0.22 1.28 0.11 0.05
February 3.5% 1.76 0.31 0.22 1.54 0.13 0.06
March 5.5% 2.76 0.78 0.55 2.22 0.18 0.09
Total 100.0% 50.20 11.19 7.83 42.37 3.53 1.77
Notes:
(1) Based SEO information for elevations below 6,500 feet.
(2) Equals 50.2 inches from NWS 33, Map 3, times Column (1).
(3) From NOAH Climatological Data Annual Summary, Colorado.
(4) Equals Column (3) times 70%.
(5) Equals Column (2) minus Column (4).
(6) Equals Column (5) divided by 12.
(7) Equals Pond Surface Area times Column (6).
Deere & Ault Consultants, Inc. 12/31/2008 PA0183 Evans #2 Pin005 2009 SWSP Renewaa2009 Evans#2 SWSP Tables