REP39202

• Permit No: C1980004
• IBM Index Class Name: Report
• Doc Date: 1/27/1997
• Doc Name: 1996 Annual Hydrologic Report for McClane & Munger Canyon
• From: Grand Valley Coal Company
• To: DMG
• Annual Report Year: 1996
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

TABLE 3 -MONTHLY AND ANNUAL PRECIPITATION ASHFORD CANYON
L~
,~
WATER
YEAR
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
TOTAL
1977 1.35 1.40 2.65 0.81 621+:!
1978 1.27 1.49 1.35 2.30 0.89 0.03 0.27 0.45 0.20 ::::8.25+..:-
1979 0.60 4.30 2.36 1.51 0.25 0.20 0.33 0.13 i"'9:68+:
1980 0.60 0.60 1.10 6.00 4.70 3.07 1.00 0.60 1.45 0.75 19.87+
1981 2.20 0.78 0.86 0.84 0.35 2.23 0.53 2.55 0.60 1.25 1.05 2.45 15.69
1982 4.57 0.86 0.83 2.13 0.41 324 0.28 0.70 0.23 0.59 1.18 4.22 19.24
1983 2.19 3.21 1.66 0.79 1.80 2.52 2.35 2.92 2.20 1.74 1.23 2.22 24.83
1984 3.14 4.13 3.40 0.86 0.47 1.91 2.65 1.59 3.56 1.32 3.54 0.43 27.02
1985 2.97 0.99 4.02 1.69 D.94 2.80 3.00 1.49 0.59 1.99 0.08 2.60 23.16
1986 3.56 4.94 0.34 0.32 1.51 1.74 2.53 2.99 0.13 2.27 1.23 3.58 25.14
1987 2.02 0.79 0.87 1.57 1.37 2.79 0.97 1.80 1.40 2.46 3.62 0.79 20.47
1988 1.96 1.89 2.21 1.96 0.48 1.45 1.86 1.77 0.60 0.02 0.89 0.62 15.91
1989 0.26 1.35 2.01 0.78 3.21 1.87 0.28 0.16 0.98 0.07 1.13 1.18 13.28
1990 0.75 0.43 0.12 0.54 1.79 1.27 1.53 0.33 0.65 1.10 0.43 1.79 10.73
1991 1.05 0.55 0.86 1.08 0.95 3.05 1.97 0.56 0.57 1.26 3.00 2.05 16.95
1992 2.42 1.70 0.88 0.78 1.75 2.51 0.96 2.92 0.16 1.70 1.41 0.87 18.06
1993 2.29 1.88 2.08 5.02 4.47 2.73 1.42 2.37 D.58 0.15 1.14 1.38 25.51
1994 3.02 1.42 0.71 0.45 2.04 0.28 2.64 0.74 0.25 0.00 2.14 1.88 15.57
1995 2.2 1.94 1.71 2.09 1.30 1.52 1.25 3.39 3.12 1.97 1.48 1.52 23.49
1996 0.24 0.33 0.47 2.01 3.26 1.07 1.61 0.60 0.94 0.44 0.24 1.77 12.98
1997 1.55 1.75 1.19
AVERAGE 1.94 1.77 1.45 1.43 1.63 2.06 1.60 1.53 0.94 1.02 1.43 1.57 19.25
MAXIMUM 4.57 4.94 4.02 6.00 4.70 324 3.00 3.39 3.56 2.48 3.62 4.22 27.02
MINIMUM 0.24 0.33 0.12 0.32 0.35 0.28 0.28 0.16 0.03 0.00 0.08 0.43 10.73
ST. DEV. 1.14 1.32 0.98 1.52 1.31 0.80 0.80 0.98 0.99 0.81 1.02 1.05 8.88
Return Period ears 100 50 25 10 5
Preci nation in Inches 2.4 2.1 1.9 1.4 1.2
Number of Events 0 1 2 6 3
2.5
2
1.5
1
0.5
0
AHR - 96
MONTHLY AVERAGE PRECIPITATION
U. S. Bureau of Land Management rain gage in Ashford Canyon.
1/4 NE, 1!4 NW, Section 4, T7S, R102W, 6TH PM
(Apruobmatey 4.5 miles North of Munger Canyon.)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
TABLE 3
1-16-97