Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of TUESDAY: APRIL 7 , 2020
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 18.3 15.2 120 19.2 20.6 93
Black Bear 8170 36.1 37.2 97 33.0 37.8 87
Blind Bull Sum 8650 26.4 23.2 114 16.2 19.3 84
Cottonwood Creek 7670 27.3 21.0 130 29.5 24.3 121
East Rim Divide 7930 12.3 10.2 121 10.0 11.6 86
Grand Targhee 9260 43.7 38.5 114 28.8 30.6 94
Granite Creek 6770 18.3 14.5 126 17.0 19.5 87
Grassy Lake 7265 34.6 31.5 110 34.6 35.5 97
Gros Ventre Summit 8750 13.1 12.9 102 12.7 12.8 99
Gunsight Pass 9820 13.9 13.8 101 13.7 13.7 100
Lewis Lake Divide 7850 28.5 29.9 95 31.8 34.9 91
Phillips Bench 8200 -M 25.4 * -M 27.8 *
Salt River Summit 7640 15.9 12.8 124 16.2 16.5 98
Snake River Station 6920 18.8 14.9 126 22.4 22.1 101
Spring Creek Divide 9000 27.0 22.5 120 25.2 23.5 107
Thumb Divide 7980 18.3 14.7 124 17.4 18.4 95
Togwotee Pass 9580 28.3 22.1 128 27.3 24.0 114
Two Ocean Plateau 9240 32.6 26.0 125 24.7 26.8 92
Willow Creek 8080 38.3 28.4 135 35.9 33.2 108
Younts Peak 8350 18.7 14.3 131 14.7 15.6 94
----- -----
Basin Index (%) 117 98
MADISON-GALLATIN
Black Bear 8170 36.1 37.2 97 33.0 37.8 87
Canyon 7870 15.5 12.4 125 15.8 16.0 99
Madison Plateau 7750 23.0 21.5 107 20.3 26.0 78
West Yellowstone 6700 12.0 9.5 126 9.5 14.1 67
Whiskey Creek 6800 16.2 14.8 109 18.3 19.9 92
----- -----
Basin Index (%) 108 85
YELLOWSTONE
Beartooth Lake 9360 24.0 21.3 113 22.3 19.4 115
Burnt Mtn 5880 8.5 4.5 189 14.6 12.9 113
Canyon 7870 15.5 12.4 125 15.8 16.0 99
Cole Creek 7850 17.6 14.6 121 13.6 12.8 106
Evening Star 9200 28.6 23.8 120 30.6 26.9 114
Fisher Creek 9100 33.7 31.2 108 34.4 31.2 110
Northeast Entrance 7350 11.4 9.0 127 13.0 12.0 108
Parker Peak 9400 -M 19.4 * -M 17.4 *
Sylvan Lake 8420 23.0 19.4 119 24.7 21.9 113
Thumb Divide 7980 18.3 14.7 124 17.4 18.4 95
Two Ocean Plateau 9240 32.6 26.0 125 24.7 26.8 92
White Mill 8700 27.4 22.2 123 22.8 23.3 98
Wolverine 7650 13.4 9.6 140 13.6 12.0 113
Younts Peak 8350 18.7 14.3 131 14.7 15.6 94
----- -----
Basin Index (%) 122 105
WIND RIVER
Burroughs Creek 8750 13.9 -M * 14.5 -M *
Castle Creek 8400 6.0 -M * 7.1 -M *
Cold Springs 9630 7.9 6.7 118 7.4 9.9 75
Deer Park 9700 14.7 15.6 94 13.3 19.8 67
Hobbs Park 10100 14.3 14.1 101 12.0 13.4 90
Kirwin 9550 12.5 9.6 130 10.9 11.4 96
Little Warm 9370 13.1 10.2 128 10.5 12.7 83
Owl Creek 8975 6.6 5.8 114 7.2 6.0 120
South Pass 9040 12.7 15.2 84 11.3 17.3 65
St. Lawrence Alt 8620 5.7 6.9 83 7.5 8.9 84
Togwotee Pass 9580 28.3 22.1 128 27.3 24.0 114
Townsend Creek 8700 9.9 9.7 102 9.9 12.0 82
----- -----
Basin Index (%) 108 87
BIGHORN BASIN
Bald Mtn. 9380 20.6 19.1 108 16.6 16.8 99
Bear Trap Meadow 8200 8.9 4.9 182 9.6 8.5 113
Bone Springs Div 9350 17.7 16.9 105 14.5 15.4 94
Grave Springs 8550 10.1 9.4 107 10.3 10.6 97
Kirwin 9550 12.5 9.6 130 10.9 11.4 96
Marquette 8760 7.5 -M * 9.0 -M *
Middle Powder 7760 12.6 12.0 105 11.9 11.6 103
Owl Creek 8975 6.6 5.8 114 7.2 6.0 120
Powder River Pass 9480 12.2 10.2 120 12.5 12.5 100
Shell Creek 9580 14.9 15.1 99 14.0 13.6 103
Timber Creek 7950 5.9 4.9 120 7.1 7.3 97
----- -----
Basin Index (%) 113 101
SHOSHONE RIVER
Blackwater 9780 23.9 22.6 106 23.7 20.3 117
Evening Star 9200 28.6 23.8 120 30.6 26.9 114
Marquette 8760 7.5 -M * 9.0 -M *
Sylvan Lake 8420 23.0 19.4 119 24.7 21.9 113
Sylvan Road 7120 13.2 10.8 122 -M 16.5 *
Younts Peak 8350 18.7 14.3 131 14.7 15.6 94
----- -----
Basin Index (%) 118 111
POWDER RIVER
Bear Trap Meadow 8200 8.9 4.9 182 9.6 8.5 113
Cloud Peak Reservoir 9860 14.3 14.8 97 13.7 13.2 104
Grave Springs 8550 10.1 9.4 107 10.3 10.6 97
Hansen Sawmill 8360 7.6 6.1 125 8.9 8.5 105
Middle Powder 7760 12.6 12.0 105 11.9 11.6 103
Powder River Pass 9480 12.2 10.2 120 12.5 12.5 100
Soldier Park 8720 7.2 -M * 8.9 -M *
----- -----
Basin Index (%) 114 103
TONGUE RIVER
Big Goose 7990 9.0 9.6 94 9.6 11.4 84
Bone Springs Div 9350 17.7 16.9 105 14.5 15.4 94
Burgess Junction 7880 11.4 11.9 96 12.6 12.3 102
Dome Lake 8880 13.6 11.8 115 9.7 13.5 72
Little Goose 8870 10.9 -M * 8.3 -M *
Sucker Creek 8880 13.2 12.1 109 12.9 14.3 90
Tie Creek 6870 8.2 5.6 146 12.8 11.7 109
----- -----
Basin Index (%) 108 92
BELLE FOURCHE
Blind Park 6890 5.6 7.0 80 8.3 11.8 70
Cole Canyon 5910 -M 5.1 * -M 9.5 *
----- -----
Basin Index (%) 80 70
CHEYENNE RIVER BASIN
Blind Park 6890 5.6 7.0 80 8.3 11.8 70
North Rapid Creek 6130 6.9 6.5 106 8.4 9.9 85
----- -----
Basin Index (%) 93 77
UPPER N. PLATTE
Arapaho Ridge 10960 23.1 20.9 111 22.1 22.3 99
Blackhall Mtn 9820 30.8 -M * 29.2 -M *
Columbine 9160 30.4 23.4 130 28.4 25.4 112
Divide Peak 8880 21.3 19.9 107 21.9 21.3 103
Joe Wright 10120 22.4 21.2 106 26.6 25.6 104
Laprele Creek 8375 12.3 9.4 131 13.2 12.5 106
Med Bow 10500 43.7 -M * 35.2 -M *
Never Summer 10280 -M 20.3 * -M -M *
North French Creek 10130 33.9 29.4 115 32.0 26.6 120
Old Battle 10000 32.2 31.3 103 30.2 34.7 87
Rawah 9020 11.4 10.6 108 14.4 14.2 101
Sage Creek Basin 7850 14.6 11.9 123 12.5 14.6 86
Sand Lake 10050 30.1 28.8 105 27.2 24.6 111
South Brush Creek 8440 12.1 11.9 102 13.2 15.1 87
Tower 10500 46.2 45.8 101 41.7 39.6 105
Webber Springs 9250 23.0 23.1 100 25.3 26.6 95
Whiskey Park 8950 33.0 27.4 120 31.6 27.8 114
Willow Creek Pass 9540 13.6 12.2 111 12.9 13.3 97
Zirkel 9340 28.7 26.3 109 30.9 28.4 109
----- -----
Basin Index (%) 110 103
SWEETWATER
Deer Park 9700 14.7 15.6 94 13.3 19.8 67
Larsen Creek 9000 7.4 11.6 64 9.3 -M *
South Pass 9040 12.7 15.2 84 11.3 17.3 65
----- -----
Basin Index (%) 82 66
LOWER N. PLATTE
Casper Mtn. 7900 16.4 14.3 115 11.9 15.0 79
Laprele Creek 8375 12.3 9.4 131 13.2 12.5 106
Reno Hill 8400 17.0 14.0 121 17.5 15.5 113
Windy Peak 7900 10.2 7.7 132 9.2 10.5 88
----- -----
Basin Index (%) 123 97
LARAMIE RIVER
Brooklyn Lake 10240 27.7 21.8 127 26.3 21.0 125
Cinnabar Park 9574 22.6 21.2 107 25.3 24.0 105
Crow Creek 8330 7.5 7.0 107 10.7 10.8 99
Deadman Hill 10220 18.8 16.1 117 16.6 17.2 97
Rawah 9020 11.4 10.6 108 14.4 14.2 101
Roach 9700 15.2 16.6 92 16.0 19.1 84
Windy Peak 7900 10.2 7.7 132 9.2 10.5 88
----- -----
Basin Index (%) 112 101
S. PLATTE
Black Mountain 8920 10.0 -M * 13.1 -M *
Crow Creek 8330 7.5 7.0 107 10.7 10.8 99
Deadman Hill 10220 18.8 16.1 117 16.6 17.2 97
----- -----
Basin Index (%) 114 98
LITTLE SNAKE RIVER
Battle Mountain 7440 11.2 9.5 118 14.6 14.9 98
Divide Peak 8880 21.3 19.9 107 21.9 21.3 103
Elk River 8700 20.0 19.2 104 18.0 19.9 90
Little Snake River 8915 28.1 25.2 112 32.7 29.7 110
Old Battle 10000 32.2 31.3 103 30.2 34.7 87
Sage Creek Basin 7850 14.6 11.9 123 12.5 14.6 86
Sandstone RS 8150 16.3 12.8 127 16.3 18.2 90
Whiskey Park 8950 33.0 27.4 120 31.6 27.8 114
----- -----
Basin Index (%) 112 98
UPPER GREEN RIVER
Big Sandy Opening 9080 10.4 12.6 83 9.2 13.1 70
Blind Bull Sum 8650 26.4 23.2 114 16.2 19.3 84
East Rim Divide 7930 12.3 10.2 121 10.0 11.6 86
Elkhart Park G.S. 9400 10.7 12.3 87 10.5 13.2 80
Gros Ventre Summit 8750 13.1 12.9 102 12.7 12.8 99
Gunsight Pass 9820 13.9 13.8 101 13.7 13.7 100
Indian Creek 9425 23.9 24.7 97 16.8 22.3 75
Kendall R.S. 7740 11.1 11.4 97 11.3 14.1 80
Loomis Park 8240 15.2 13.8 110 18.3 17.1 107
New Fork Lake 8340 10.7 10.3 104 9.2 10.7 86
Pocket Creek 9360 -M -M * 8.5 -M *
Snider Basin 8060 13.3 12.3 108 14.2 14.0 101
Spring Creek Divide 9000 27.0 22.5 120 25.2 23.5 107
Triple Peak 8500 27.7 21.8 127 26.8 25.0 107
----- -----
Basin Index (%) 107 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.4 -M * 12.1 -M *
Buck Pasture 9632 18.3 -M * 17.4 -M *
EF Blacks Fork GS 9360 14.8 -M * 12.0 -M *
Hams Fork 7840 12.7 10.6 120 11.8 11.3 104
Hewinta 9500 12.6 10.9 116 14.8 14.0 106
Hickerson Park 9122 11.1 7.9 141 11.8 10.2 116
Hole-in-Rock 9168 11.1 7.0 159 11.6 9.7 120
Indian Creek 9425 23.9 24.7 97 16.8 22.3 75
Kelley R.S. 8180 16.3 14.7 111 16.7 17.9 93
Spirit Lk 10235 18.3 -M * 18.7 -M *
Steel Creek Park 10158 17.5 15.8 111 18.1 16.4 110
----- -----
Basin Index (%) 115 100
UPPER BEAR RIVER
Bear River RS 8777 10.4 -M * 11.7 -M *
Bug Lake 7987 20.0 18.4 109 18.8 19.2 98
Burts Miller Ranch 8000 6.0 -M * 7.3 -M *
Chalk Creek #1 9171 21.1 24.4 86 19.4 25.0 78
Hayden Fork 9130 17.0 15.4 110 20.7 21.0 99
Kelley R.S. 8180 16.3 14.7 111 16.7 17.9 93
Lily Lake 9133 12.4 12.6 98 13.1 17.0 77
Monte Cristo 8932 30.1 27.7 109 26.5 25.7 103
Salt River Summit 7640 15.9 12.8 124 16.2 16.5 98
Spring Creek Divide 9000 27.0 22.5 120 25.2 23.5 107
----- -----
Basin Index (%) 108 94
-----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.
----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.