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 FRIDAY: MAY 6 , 2022
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 8.7 8.2 106 20.0 23.1 87
Blind Bull Sum 8650 23.1 24.1 96 16.4 19.6 84
Cottonwood Creek 7670 16.9 15.6 108 28.5 28.5 100
East Rim Divide 7930 .2 4.8 4 12.2 12.8 95
Grand Targhee 9260 35.9 46.4 77 31.6 36.4 87
Granite Creek 6770 5.7 8.3 69 16.0 21.0 76
Grassy Lake 7265 22.5 25.6 88 34.9 38.8 90
Gros Ventre Summit 8750 9.9 11.1 89 12.6 14.8 85
Gunsight Pass 9820 14.2 12.0 118 16.7 16.4 102
Lewis Lake Divide 7850 22.9 29.1 79 34.9 37.0 94
Loomis Park 8240 8.3 10.1 82 17.7 18.9 94
Phillips Bench 8200 22.1 25.6 86 27.1 28.9 94
Salt River Summit 7640 8.9 7.0 127 18.3 18.0 102
Snake River Station 6920 5.5 6.0 92 20.7 24.8 83
Somsen Ranch 6800 3.0 .0 * -M 18.3 *
Spring Creek Divide 9000 23.3 24.7 94 26.0 25.7 101
Thumb Divide 7980 13.6 10.4 131 20.4 21.4 95
Togwotee Pass 9580 22.6 25.4 89 24.8 28.0 89
Triple Peak 8500 19.4 18.0 108 29.1 29.0 100
Two Ocean Plateau 9240 30.3 32.5 93 29.0 30.2 96
Willow Creek 8080 26.0 25.6 102 37.4 38.6 97
Younts Peak 8350 12.5 13.9 90 12.5 17.5 71
----- -----
Basin Index (%) 92 92
MADISON HEADWATERS IN WYOMING
Black Bear 8170 30.8 40.7 76 34.1 41.2 83
Canyon 7870 10.2 -M * 14.6 -M *
Madison Plateau 7750 18.6 22.8 82 24.0 28.0 86
West Yellowstone 6700 .2 .0 * 14.6 16.1 91
Whiskey Creek 6800 11.5 12.1 95 -M 22.8 *
----- -----
Basin Index (%) 81 85
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.0 24.3 82 19.6 23.8 82
Canyon 7870 10.2 -M * 14.6 -M *
Evening Star 9200 28.0 26.8 104 27.6 32.0 86
Fisher Creek 9100 31.7 35.9 88 34.7 37.7 92
Monument Peak 8850 19.4 21.8 89 24.3 26.1 93
Northeast Entrance 7350 .8 .6 133* 13.0 14.7 88
Parker Peak 9400 23.2 24.0 97 23.0 23.2 99
Sylvan Lake 8420 16.0 18.6 86 24.4 26.8 91
Thumb Divide 7980 13.6 10.4 131 20.4 21.4 95
Two Ocean Plateau 9240 30.3 32.5 93 29.0 30.2 96
White Mill 8700 22.5 26.8 84 23.0 25.8 89
Wolverine 7650 5.9 1.9 311 14.8 14.0 106
----- -----
Basin Index (%) 95 92
WIND RIVER
Burroughs Creek 8750 8.8 -M * 16.5 -M *
Castle Creek 8400 .2 .0 * -M 10.1 *
Cold Springs 9630 7.5 2.8 268 15.5 11.7 132
Deer Park 9700 15.3 14.6 105 20.9 22.1 95
Hobbs Park 10100 19.3 16.4 118 20.9 17.4 120
Kirwin 9550 14.4 11.8 122 16.5 15.0 110
Little Warm 9370 12.0 8.4 143 16.7 14.1 118
South Pass 9040 12.9 13.2 98 18.1 18.4 98
St. Lawrence Alt 8620 .2 -M * 12.0 -M *
Togwotee Pass 9580 22.6 25.4 89 24.8 28.0 89
Townsend Creek 8700 10.8 7.8 138 16.8 14.2 118
----- -----
Basin Index (%) 115 107
BIGHORN BASIN
Bald Mtn. 9380 19.5 20.5 95 17.4 19.0 92
Bear Trap Meadow 8200 2.7 .6 450* 12.2 11.6 105
Bone Springs Div 9350 19.7 18.0 109 16.3 18.6 88
Grave Springs 8550 9.8 7.8 126 13.4 12.6 106
Kirwin 9550 14.4 11.8 122 16.5 15.0 110
Marquette 8760 7.1 7.4 96 12.0 12.8 94
Middle Powder 7760 12.1 10.8 112 13.3 12.6 106
Owl Creek 8975 .9 .3 300* 10.1 8.8 115
Powder River Pass 9480 9.4 9.2 102 11.9 15.7 76
Shell Creek 9580 16.6 16.4 101 16.9 16.8 101
Timber Creek 7950 1.5 1.8 83 11.3 10.8 105
----- -----
Basin Index (%) 109 98
SHOSHONE RIVER
Blackwater 9780 24.6 26.2 94 26.0 26.2 99
Evening Star 9200 28.0 26.8 104 27.6 32.0 86
Marquette 8760 7.1 7.4 96 12.0 12.8 94
Sylvan Lake 8420 16.0 18.6 86 24.4 26.8 91
Sylvan Road 7120 .1 1.2 8 -M 18.4 *
Younts Peak 8350 12.5 13.9 90 12.5 17.5 71
----- -----
Basin Index (%) 94 89
POWDER RIVER
Bear Trap Meadow 8200 2.7 .6 450* 12.2 11.6 105
Cloud Peak Reservoir 9860 16.6 16.4 101 18.7 17.7 106
Grave Springs 8550 9.8 7.8 126 13.4 12.6 106
Hansen Sawmill 8360 4.6 2.8 164 12.6 11.2 112
Middle Powder 7760 12.1 10.8 112 13.3 12.6 106
Powder River Pass 9480 9.4 9.2 102 11.9 15.7 76
Soldier Park 8720 4.9 2.6 188 13.0 11.6 112
----- -----
Basin Index (%) 120 102
TONGUE RIVER
Big Goose 7990 9.8 8.3 118 15.0 13.8 109
Bone Springs Div 9350 19.7 18.0 109 16.3 18.6 88
Burgess Junction 7880 13.9 11.2 124 17.3 14.8 117
Dome Lake 8880 15.2 11.4 133 18.0 16.2 111
Little Goose 8870 11.6 10.4 112 18.1 16.2 112
Sucker Creek 8880 15.0 11.2 134 21.2 17.6 120
Tie Creek 6870 3.8 1.4 271 16.4 14.4 114
----- -----
Basin Index (%) 124 110
BELLE FOURCHE
Blind Park 6890 .0 .0 * 13.4 13.6 99
Cole Canyon 5910 .9 .0 * 13.7 12.6 109
North Rapid Creek 6130 1.5 .0 * 8.6 11.2 77
----- -----
Basin Index (%) * 95
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 13.4 13.6 99
North Rapid Creek 6130 1.5 .0 * 8.6 11.2 77
----- -----
Basin Index (%) * 89
UPPER N. PLATTE
Arapaho Ridge 10976 21.5 22.7 95 24.1 25.7 94
Blackhall Mtn 9839 29.3 32.2 91 34.0 36.3 94
Cinnabar Park 9707 15.2 18.3 83 23.6 27.5 86
Columbine 9167 17.3 16.3 106 28.7 29.6 97
Divide Peak 8730 10.3 13.9 74 23.0 25.2 91
Joe Wright 10158 24.6 22.2 111 34.1 31.0 110
Laprele Creek 8390 3.9 4.4 89 14.5 15.4 94
Med Bow 10512 36.9 -M * 34.8 -M *
Never Summer 10323 25.3 22.4 113 20.7 20.6 100
North French Creek 10153 28.1 32.4 87 30.5 33.0 92
Old Battle 9860 31.6 35.3 90 35.0 39.1 90
Rawah 9069 9.7 5.6 173 19.1 19.9 96
Sage Creek Basin 7850 -M .0 * 12.4 14.9 83
Sand Lake 10098 29.9 32.2 93 30.4 29.9 102
South Brush Creek 8495 3.1 4.6 67 15.0 17.0 88
Tower 10620 44.2 47.8 92 46.9 45.2 104
Webber Springs 9260 18.8 20.2 93 28.8 30.2 95
Whiskey Park 9020 27.2 26.8 101 33.5 33.7 99
Willow Creek Pass 9523 14.9 15.0 99 17.2 16.7 103
Zirkel 9338 17.5 21.2 83 35.7 35.2 101
----- -----
Basin Index (%) 95 96
SWEETWATER
Deer Park 9700 15.3 14.6 105 20.9 22.1 95
Larsen Creek 9000 -M 1.0 * 15.2 16.1 94
South Pass 9040 12.9 13.2 98 18.1 18.4 98
----- -----
Basin Index (%) 101 96
LOWER N. PLATTE
Casper Mtn. 7920 11.4 11.2 102 19.1 17.9 107
Laprele Creek 8390 3.9 4.4 89 14.5 15.4 94
Reno Hill 8430 14.0 13.5 104 21.9 19.9 110
Windy Peak 7915 2.6 3.0 87 12.7 13.6 93
----- -----
Basin Index (%) 99 102
LARAMIE RIVER
Brooklyn Lake 10250 19.5 22.3 87 26.3 25.6 103
Cinnabar Park 9707 15.2 18.3 83 23.6 27.5 86
Crow Creek 8335 .1 .0 * 11.7 13.3 88
Deadman Hill 10239 22.1 19.3 115 22.1 22.0 100
Rawah 9069 9.7 5.6 173 19.1 19.9 96
Roach 9740 15.5 16.4 95 23.7 22.2 107
Windy Peak 7915 2.6 3.0 87 12.7 13.6 93
----- -----
Basin Index (%) 100 97
S. PLATTE
Crow Creek 8335 .1 .0 * 11.7 13.3 88
----- -----
Basin Index (%) * 88
LITTLE SNAKE RIVER
Battle Mountain 7498 .1 .0 * 18.0 17.8 101
Divide Peak 8730 10.3 13.9 74 23.0 25.2 91
Elk River 8739 12.2 10.8 113 25.3 23.0 110
Elkhead Divide 8800 14.4 -M * 24.8 -M *
Little Snake River 8928 19.7 21.4 92 35.1 37.2 94
Old Battle 9860 31.6 35.3 90 35.0 39.1 90
Sage Creek Basin 7850 -M .0 * 12.4 14.9 83
Sandstone RS 8152 3.2 3.8 84 17.8 20.2 88
Whiskey Park 9020 27.2 26.8 101 33.5 33.7 99
----- -----
Basin Index (%) 93 95
UPPER GREEN RIVER
Big Sandy Opening 9080 11.4 9.6 119 15.1 15.0 101
Blind Bull Sum 8650 23.1 24.1 96 16.4 19.6 84
East Rim Divide 7930 .2 4.8 4 12.2 12.8 95
Elkhart Park G.S. 9400 8.4 10.3 82 11.9 14.0 85
Gros Ventre Summit 8750 9.9 11.1 89 12.6 14.8 85
Gunsight Pass 9820 14.2 12.0 118 16.7 16.4 102
Indian Creek 9425 22.4 21.2 106 22.2 21.9 101
Kendall R.S. 7740 2.0 2.2 91 15.5 14.8 105
Larsen Creek 9000 -M 1.0 * 15.2 16.1 94
Loomis Park 8240 8.3 10.1 82 17.7 18.9 94
New Fork Lake 8340 3.4 4.1 83 11.2 12.4 90
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 3.6 6.2 58 17.6 15.3 115
Spring Creek Divide 9000 23.3 24.7 94 26.0 25.7 101
Triple Peak 8500 19.4 18.0 108 29.1 29.0 100
----- -----
Basin Index (%) 94 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 1.2 1.0 120 14.8 14.4 103
Buck Pasture 9632 8.8 -M * 19.4 -M *
EF Blacks Fork GS 9360 1.8 5.8 31 14.4 13.6 106
Hams Fork 7840 .0 .2 0* 13.0 12.1 107
Henrys Fork 10182 -M -M * 13.8 -M *
Hewinta 9500 2.2 3.5 63 17.2 16.2 106
Hickerson Park 9122 .0 1.7 0 11.9 12.5 95
Hole-in-Rock 9168 .0 .9 0 12.3 12.6 98
Indian Creek 9425 22.4 21.2 106 22.2 21.9 101
Kelley R.S. 8180 9.0 9.2 98 18.7 18.2 103
Spirit Lk 10235 5.4 12.3 44 18.0 19.9 90
Steel Creek Park 10158 15.1 17.2 88 20.1 19.4 104
----- -----
Basin Index (%) 78 101
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 15.9 13.8 115
Bug Lake 7987 11.2 13.0 86 21.3 19.5 109
Burts Miller Ranch 8000 .0 .0 * 9.6 8.7 110
Chalk Creek #1 9171 18.6 21.2 88 26.5 26.2 101
Giveout 6930 .4 .0 * 13.9 13.8 101
Hayden Fork 9130 .8 7.6 11 24.5 23.5 104
Kelley R.S. 8180 9.0 9.2 98 18.7 18.2 103
Lily Lake 9133 5.5 7.8 71 18.2 18.6 98
Monte Cristo 8932 18.7 21.4 87 28.5 28.1 101
Salt River Summit 7640 8.9 7.0 127 18.3 18.0 102
Spring Creek Divide 9000 23.3 24.7 94 26.0 25.7 101
Trial Lake 9992 18.4 21.6 85 25.0 25.1 100
----- -----
Basin Index (%) 86 103
-----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Median (or Average) 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 (or Average) represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median (or Average) value for those sites on this day.
The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Median (or Average) value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1991-2020.
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 or average for the day is less than 10% of the maximum
median or average value for the year.
* Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians or averages 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.
