2011-02-24_HYDROLOGY - M1978327

• Permit No: M1978327
• IBM Index Class Name: HYDROLOGY
• Doc Date: 2/24/2011
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Applegate Group, Inc.
• Permit Index Doc Type: Hydrology Report
• Email Name: ECS
• Media Type: D
• Archive: No

Table No. 1
Kauffman #1 Pit
Jake Kauffman and Son, Inc.
ro? Applegate
Group, ine.
10/26/10
Job No. 05-149
evaporati ve Losses
Month Percent of
Annual
Evaporation
(A) Gross Lake
Evaporation
(ft)
(B)
Precipitation
(in)
(C) Effective
Precipitation
(ft)
(D) Net Lake
Evaporation
(ft)'
(E) Total Lake
Evaporation
(ac-ft)
(F)
]an-11 3.0% 0.10 0.51 0.03 0.07 0.41
Feb-11 3.5% 0.11 0.48 0.03 0.08 0.52
Mar-11 5.5% 0.17 1.40 0.08 0.09 0.58
Apr-11 9.0% 0.29 1.65 0.10 0.19 1.19
May-11 12.0% 0.38 2.28 0.13 0.25 1.56
Jun-11 14.5% 0.46 1.91 0.11 0.35 2.19
Jul-11 15.0% 0.48 1.50 0.09 0.39 2.44
Au -11 13.5% 0.43 1.38 0.08 0.35 2.19
Sep-11 10.0% 0.32 1.76 0.10 0.21 1.35
Oct-11 7.0% 0.22 0.78 0.05 0.18 1.11
Nov-11 4.0% 0.13 0.82 0.05 0.08 0.50
Dec-11 3.0%
Am"PUMN 0.10
IZINWIM 0.28 0.02
WATI 0.08

0. M- 0.50

E
Exposed Water Surface = 42.5 acres
Pre-1981 Water Surface = 36.2 acres
Net Lake Surface = 6.3 acres
Annual Precipitation = 14.75 in/yr
Gross Annual Evaporation = 38 in/yr
LEGEND:
(A) Percent of annual evaporation from SEO guidelines for elevations < 6,500 feet
(B) Gross lake evaporation, (B) = (A) * [gross annual evaporation/12] - Taken from NOAA Technical Report NWS 33
(C) Precipitation data from NCWCD Weather Station
(D) Effective precipitation, (D) = [(C)/12] * 70%
(E) Net lake evaporation, (E) = (B) - (D)
(F) Total lake evaporation, (F) = (E) * exposed surface area
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