|
| |
Appendix 8a
Average precipitation and runoff values for Wyoming counties
Runoff computed at 10% of mean monthly precipitation
Albany County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
1.07
|
0.11
|
|
Feb
|
0.74
|
0.07
|
|
Mar
|
1.05
|
0.11
|
|
Apr
|
1.16
|
0.12
|
|
May
|
1.44
|
0.14
|
|
Jun
|
1.42
|
0.14
|
|
Jul
|
1.62
|
0.16
|
|
Aug
|
1.32
|
0.13
|
|
Sept
|
1.28
|
0.13
|
|
Oct
|
0.79
|
0.08
|
|
Nov
|
0.96
|
0.10
|
|
Dec
|
1.05
|
0.11
|
|
Total
|
13.90
|
1.39
|
Big Horn County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.25
|
0.03
|
|
Feb
|
0.14
|
0.01
|
|
Mar
|
0.31
|
0.03
|
|
APR
|
0.77
|
0.08
|
|
May
|
1.25
|
0.13
|
|
Jun
|
1.07
|
0.11
|
|
Jul
|
0.45
|
0.05
|
|
Aug
|
0.61
|
0.06
|
|
Sept
|
0.80
|
0.08
|
|
Oct
|
0.50
|
0.05
|
|
Nov
|
0.29
|
0.03
|
|
Dec
|
0.31
|
0.03
|
|
Total
|
6.75
|
0.68
|
Campbell County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.42
|
0.04
|
|
Feb
|
0.56
|
0.06
|
|
Mar
|
0.69
|
0.07
|
|
APR
|
0.95
|
0.10
|
|
May
|
2.19
|
0.22
|
|
Jun
|
2.65
|
0.27
|
|
Jul
|
1.25
|
0.13
|
|
Aug
|
1.17
|
0.12
|
|
Sept
|
1.19
|
0.12
|
|
Oct
|
0.91
|
0.09
|
|
Nov
|
0.51
|
0.05
|
|
Dec
|
0.55
|
0.06
|
|
Total
|
13.04
|
1.30
|
Carbon County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.77
|
0.08
|
|
Feb
|
0.72
|
0.07
|
|
Mar
|
1.05
|
0.11
|
|
APR
|
1.52
|
0.15
|
|
May
|
1.58
|
0.16
|
|
Jun
|
1.33
|
0.13
|
|
Jul
|
0.89
|
0.09
|
|
Aug
|
0.92
|
0.09
|
|
Sept
|
1.04
|
0.10
|
|
Oct
|
1.02
|
0.10
|
|
Nov
|
1.03
|
0.10
|
|
Dec
|
0.78
|
0.08
|
|
Total
|
12.65
|
1.27
|
Converse County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.40
|
0.04
|
|
Feb
|
0.41
|
0.04
|
|
Mar
|
0.79
|
0.08
|
|
APR
|
1.68
|
0.17
|
|
May
|
2.17
|
0.22
|
|
Jun
|
1.64
|
0.16
|
|
Jul
|
1.51
|
0.15
|
|
Aug
|
0.76
|
0.08
|
|
Sept
|
0.82
|
0.08
|
|
Oct
|
0.68
|
0.07
|
|
Nov
|
0.63
|
0.06
|
|
Dec
|
0.39
|
0.04
|
|
Total
|
11.88
|
1.19
|
Crook County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.8
|
0.08
|
|
Feb
|
0.8
|
0.08
|
|
Mar
|
1.55
|
0.16
|
|
APR
|
3.06
|
0.31
|
|
May
|
4.18
|
0.42
|
|
Jun
|
4.15
|
0.42
|
|
Jul
|
2.23
|
0.22
|
|
Aug
|
1.69
|
0.17
|
|
Sept
|
1.83
|
0.18
|
|
Oct
|
1.73
|
0.17
|
|
Nov
|
1.08
|
0.11
|
|
Dec
|
1.76
|
0.18
|
|
Total
|
24.86
|
2.49
|
Fremont
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.30
|
0.03
|
|
Feb
|
0.30
|
0.03
|
|
Mar
|
0.57
|
0.06
|
|
APR
|
1.37
|
0.14
|
|
May
|
1.71
|
0.17
|
|
Jun
|
1.44
|
0.14
|
|
Jul
|
0.62
|
0.06
|
|
Aug
|
0.60
|
0.06
|
|
Sept
|
0.89
|
0.09
|
|
Oct
|
0.83
|
0.08
|
|
Nov
|
0.36
|
0.04
|
|
Dec
|
0.32
|
0.03
|
|
Total
|
9.31
|
0.93
|
Goshen County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.55
|
0.06
|
|
Feb
|
0.51
|
0.05
|
|
Mar
|
1.35
|
0.14
|
|
APR
|
1.89
|
0.19
|
|
May
|
2.93
|
0.29
|
|
Jun
|
2.38
|
0.24
|
|
Jul
|
2.20
|
0.22
|
|
Aug
|
1.33
|
0.13
|
|
Sept
|
1.21
|
0.12
|
|
Oct
|
0.90
|
0.09
|
|
Nov
|
0.71
|
0.07
|
|
Dec
|
0.63
|
0.06
|
|
Total
|
16.59
|
1.66
|
Hot Springs County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.54
|
0.05
|
|
Feb
|
0.53
|
0.05
|
|
Mar
|
1.06
|
0.11
|
|
APR
|
1.25
|
0.13
|
|
May
|
2.16
|
0.22
|
|
Jun
|
1.77
|
0.18
|
|
Jul
|
0.79
|
0.08
|
|
Aug
|
0.85
|
0.09
|
|
Sept
|
1.17
|
0.12
|
|
Oct
|
1.21
|
0.12
|
|
Nov
|
0.71
|
0.07
|
|
Dec
|
0.69
|
0.07
|
|
Total
|
12.73
|
1.27
|
Johnson County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.30
|
0.03
|
|
Feb
|
0.32
|
0.03
|
|
Mar
|
0.61
|
0.06
|
|
APR
|
1.40
|
0.14
|
|
May
|
2.26
|
0.23
|
|
Jun
|
2.34
|
0.23
|
|
Jul
|
1.29
|
0.13
|
|
Aug
|
1.15
|
0.12
|
|
Sept
|
1.15
|
0.11
|
|
Oct
|
0.88
|
0.09
|
|
Nov
|
0.41
|
0.04
|
|
Dec
|
0.36
|
0.04
|
|
Total
|
12.47
|
1.25
|
Laramie County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.69
|
0.07
|
|
Feb
|
0.54
|
0.05
|
|
Mar
|
1.63
|
0.16
|
|
APR
|
1.97
|
0.20
|
|
May
|
3.06
|
0.31
|
|
Jun
|
2.68
|
0.27
|
|
Jul
|
2.17
|
0.22
|
|
Aug
|
1.48
|
0.15
|
|
Sept
|
1.33
|
0.13
|
|
Oct
|
0.95
|
0.10
|
|
Nov
|
0.81
|
0.08
|
|
Dec
|
0.74
|
0.07
|
|
Total
|
18.05
|
1.81
|
Lincoln County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
1.52
|
0.15
|
|
Feb
|
1.27
|
0.13
|
|
Mar
|
1.32
|
0.13
|
|
APR
|
1.81
|
0.18
|
|
May
|
2.04
|
0.20
|
|
Jun
|
1.98
|
0.20
|
|
Jul
|
1.22
|
0.12
|
|
Aug
|
1.26
|
0.13
|
|
Sept
|
1.71
|
0.17
|
|
Oct
|
1.44
|
0.14
|
|
Nov
|
1.49
|
0.15
|
|
Dec
|
1.53
|
0.15
|
|
Total
|
18.59
|
1.86
|
Natrona County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.51
|
0.05
|
|
Feb
|
0.58
|
0.06
|
|
Mar
|
1.28
|
0.13
|
|
APR
|
1.72
|
0.17
|
|
May
|
2.16
|
0.22
|
|
Jun
|
1.23
|
0.12
|
|
Jul
|
1.13
|
0.11
|
|
Aug
|
0.91
|
0.09
|
|
Sept
|
0.69
|
0.07
|
|
Oct
|
1.00
|
0.10
|
|
Nov
|
0.67
|
0.07
|
|
Dec
|
0.57
|
0.06
|
|
Total
|
12.45
|
1.25
|
Niobrara County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.58
|
0.06
|
|
Feb
|
0.56
|
0.06
|
|
Mar
|
0.83
|
0.08
|
|
APR
|
1.94
|
0.19
|
|
May
|
2.19
|
0.22
|
|
Jun
|
2.14
|
0.21
|
|
Jul
|
1.75
|
0.18
|
|
Aug
|
1.12
|
0.11
|
|
Sept
|
1.18
|
0.12
|
|
Oct
|
0.88
|
0.09
|
|
Nov
|
0.66
|
0.07
|
|
Dec
|
0.49
|
0.05
|
|
Total
|
14.32
|
1.43
|
Park County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.40
|
0.04
|
|
Feb
|
0.34
|
0.03
|
|
Mar
|
0.68
|
0.07
|
|
APR
|
1.46
|
0.15
|
|
May
|
2.16
|
0.22
|
|
Jun
|
1.81
|
0.18
|
|
Jul
|
0.93
|
0.09
|
|
Aug
|
0.77
|
0.08
|
|
Sept
|
1.21
|
0.12
|
|
Oct
|
0.74
|
0.07
|
|
Nov
|
0.52
|
0.05
|
|
Dec
|
0.33
|
0.03
|
|
Total
|
11.35
|
1.14
|
Platte County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.62
|
0.06
|
|
Feb
|
0.57
|
0.06
|
|
Mar
|
1.12
|
0.11
|
|
APR
|
1.62
|
0.16
|
|
May
|
2.81
|
0.28
|
|
Jun
|
2.14
|
0.21
|
|
Jul
|
1.97
|
0.20
|
|
Aug
|
1.53
|
0.15
|
|
Sept
|
1.15
|
0.12
|
|
Oct
|
0.88
|
0.09
|
|
Nov
|
0.67
|
0.07
|
|
Dec
|
0.62
|
0.06
|
|
Total
|
15.70
|
1.57
|
Sheridan County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
1.33
|
0.13
|
|
Feb
|
1.30
|
0.13
|
|
Mar
|
2.04
|
0.20
|
|
APR
|
2.61
|
0.26
|
|
May
|
2.32
|
0.23
|
|
Jun
|
2.21
|
0.22
|
|
Jul
|
1.43
|
0.14
|
|
Aug
|
1.37
|
0.14
|
|
Sept
|
1.84
|
0.18
|
|
Oct
|
1.65
|
0.17
|
|
Nov
|
1.37
|
0.14
|
|
Dec
|
1.51
|
0.15
|
|
Total
|
20.98
|
2.10
|
Sublette County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
2.46
|
0.25
|
|
Feb
|
1.83
|
0.18
|
|
Mar
|
1.72
|
0.17
|
|
APR
|
1.30
|
0.13
|
|
May
|
1.62
|
0.16
|
|
Jun
|
1.45
|
0.15
|
|
Jul
|
1.28
|
0.13
|
|
Aug
|
1.34
|
0.13
|
|
Sept
|
1.67
|
0.17
|
|
Oct
|
1.33
|
0.13
|
|
Nov
|
2.35
|
0.24
|
|
Dec
|
2.85
|
0.29
|
|
Total
|
21.20
|
2.12
|
Sweetwater County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.34
|
0.03
|
|
Feb
|
0.35
|
0.04
|
|
Mar
|
0.55
|
0.06
|
|
APR
|
0.62
|
0.06
|
|
May
|
1.11
|
0.11
|
|
Jun
|
1.11
|
0.11
|
|
Jul
|
0.79
|
0.08
|
|
Aug
|
0.73
|
0.07
|
|
Sept
|
0.84
|
0.08
|
|
Oct
|
0.65
|
0.07
|
|
Nov
|
0.36
|
0.04
|
|
Dec
|
0.39
|
0.04
|
|
Total
|
7.84
|
0.78
|
Teton County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
2.05
|
0.21
|
|
Feb
|
1.60
|
0.16
|
|
Mar
|
1.67
|
0.17
|
|
APR
|
2.09
|
0.21
|
|
May
|
3.10
|
0.31
|
|
Jun
|
2.36
|
0.24
|
|
Jul
|
1.59
|
0.16
|
|
Aug
|
1.56
|
0.16
|
|
Sept
|
1.97
|
0.20
|
|
Oct
|
1.89
|
0.19
|
|
Nov
|
2.03
|
0.20
|
|
Dec
|
1.88
|
0.19
|
|
Total
|
23.79
|
2.38
|
Uinta County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.47
|
0.05
|
|
Feb
|
0.32
|
0.03
|
|
Mar
|
0.67
|
0.07
|
|
APR
|
0.94
|
0.09
|
|
May
|
1.07
|
0.11
|
|
Jun
|
0.91
|
0.09
|
|
Jul
|
0.60
|
0.06
|
|
Aug
|
0.71
|
0.07
|
|
Sept
|
0.71
|
0.07
|
|
Oct
|
0.63
|
0.06
|
|
Nov
|
0.58
|
0.06
|
|
Dec
|
0.49
|
0.05
|
|
Total
|
8.10
|
0.81
|
Washakie County
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.61
|
0.06
|
|
Feb
|
0.56
|
0.06
|
|
Mar
|
1.03
|
0.10
|
|
APR
|
1.60
|
0.16
|
|
May
|
2.17
|
0.22
|
|
Jun
|
1.76
|
0.18
|
|
Jul
|
0.77
|
0.08
|
|
Aug
|
0.78
|
0.08
|
|
Sept
|
1.25
|
0.13
|
|
Oct
|
1.21
|
0.12
|
|
Nov
|
0.75
|
0.08
|
|
Dec
|
0.68
|
0.07
|
|
Total
|
13.17
|
1.32
|
Weston County
|
Month
|
Average Normal
Precipitation
(inches)
|
Runoff
(inches)
|
|
Jan
|
0.42
|
0.04
|
|
Feb
|
0.52
|
0.05
|
|
Mar
|
0.60
|
0.06
|
|
APR
|
1.58
|
0.16
|
|
May
|
2.35
|
0.24
|
|
Jun
|
2.41
|
0.24
|
|
Jul
|
1.84
|
0.18
|
|
Aug
|
1.59
|
0.16
|
|
Sept
|
1.15
|
0.12
|
|
Oct
|
0.85
|
0.09
|
|
Nov
|
0.57
|
0.06
|
|
Dec
|
0.60
|
0.06
|
|
Total
|
14.48
|
1.45
|
CNMP Workbook
| Table of Contents | |
|
About Us
