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: APRIL 29 , 2022
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 11.1 11.0 101 19.1 22.2 86
Blind Bull Sum 8650 22.9 24.6 93 16.1 19.2 84
Cottonwood Creek 7670 18.2 17.8 102 27.1 27.8 97
East Rim Divide 7930 4.0 7.0 57 12.0 12.2 98
Grand Targhee 9260 34.1 47.6 72 29.5 35.8 82
Granite Creek 6770 10.1 10.0 101 15.7 20.4 77
Grassy Lake 7265 23.9 30.0 80 33.6 38.3 88
Gros Ventre Summit 8750 12.2 12.7 96 12.2 14.2 86
Gunsight Pass 9820 13.8 13.0 106 15.5 16.0 97
Lewis Lake Divide 7850 25.4 31.4 81 34.2 36.4 94
Loomis Park 8240 10.1 11.8 86 17.4 17.8 98
Phillips Bench 8200 22.5 27.7 81 26.0 28.4 92
Salt River Summit 7640 11.4 9.0 127 17.7 17.6 101
Snake River Station 6920 8.9 10.9 82 20.3 24.2 84
Somsen Ranch 6800 7.5 2.6 288 -M 17.9 *
Spring Creek Divide 9000 23.3 25.4 92 25.3 25.2 100
Thumb Divide 7980 15.7 14.4 109 19.9 20.6 97
Togwotee Pass 9580 22.6 25.2 90 23.9 26.8 89
Triple Peak 8500 21.4 19.5 110 28.3 27.8 102
Two Ocean Plateau 9240 31.6 33.0 96 28.1 29.0 97
Willow Creek 8080 27.2 27.8 98 36.0 36.6 98
Younts Peak 8350 15.0 14.6 103 12.0 17.0 71
----- -----
Basin Index (%) 92 92
MADISON HEADWATERS IN WYOMING
Black Bear 8170 30.5 40.2 76 33.1 40.4 82
Canyon 7870 10.6 -M * 14.1 -M *
Madison Plateau 7750 19.4 23.2 84 23.3 27.6 84
West Yellowstone 6700 3.6 2.2 164 14.4 15.6 92
Whiskey Creek 6800 12.8 14.6 88 -M 22.3 *
----- -----
Basin Index (%) 83 85
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 19.4 24.0 81 18.4 22.4 82
Canyon 7870 10.6 -M * 14.1 -M *
Evening Star 9200 28.2 27.2 104 26.7 31.1 86
Fisher Creek 9100 31.7 36.0 88 33.7 36.3 93
Monument Peak 8850 19.4 22.2 87 23.4 24.8 94
Northeast Entrance 7350 -M 3.6 * -M 14.2 *
Parker Peak 9400 22.7 23.6 96 22.5 22.3 101
Sylvan Lake 8420 16.7 20.6 81 23.6 26.0 91
Thumb Divide 7980 15.7 14.4 109 19.9 20.6 97
Two Ocean Plateau 9240 31.6 33.0 96 28.1 29.0 97
White Mill 8700 22.4 25.8 87 22.2 25.1 88
Wolverine 7650 10.0 4.7 213 14.3 13.5 106
----- -----
Basin Index (%) 94 93
WIND RIVER
Burroughs Creek 8750 9.8 -M * 15.8 -M *
Castle Creek 8400 3.4 .8 425 -M 9.4 *
Cold Springs 9630 7.4 4.6 161 14.3 11.2 128
Deer Park 9700 13.6 15.3 89 18.8 21.1 89
Hobbs Park 10100 16.7 16.2 103 18.0 16.1 112
Kirwin 9550 14.8 12.0 123 15.5 14.2 109
Little Warm 9370 12.0 9.4 128 16.1 13.2 122
South Pass 9040 11.9 15.0 79 15.8 18.1 87
St. Lawrence Alt 8620 .1 -M * 10.4 -M *
Togwotee Pass 9580 22.6 25.2 90 23.9 26.8 89
Townsend Creek 8700 8.8 9.2 96 13.9 13.3 105
----- -----
Basin Index (%) 103 102
BIGHORN BASIN
Bald Mtn. 9380 18.8 20.9 90 16.6 18.2 91
Bear Trap Meadow 8200 4.6 3.2 144 11.4 10.6 108
Bone Springs Div 9350 18.4 17.5 105 14.8 18.0 82
Grave Springs 8550 8.9 8.6 103 11.9 11.8 101
Kirwin 9550 14.8 12.0 123 15.5 14.2 109
Marquette 8760 7.7 8.2 94 11.5 11.8 97
Middle Powder 7760 11.9 11.9 100 12.0 12.0 100
Owl Creek 8975 2.4 2.0 120 9.2 8.2 112
Powder River Pass 9480 9.5 10.2 93 10.9 15.2 72
Shell Creek 9580 -M 16.3 * -M 15.8 *
Timber Creek 7950 3.7 3.4 109 10.3 9.6 107
----- -----
Basin Index (%) 103 96
SHOSHONE RIVER
Blackwater 9780 24.1 25.2 96 24.9 24.8 100
Evening Star 9200 28.2 27.2 104 26.7 31.1 86
Marquette 8760 7.7 8.2 94 11.5 11.8 97
Sylvan Lake 8420 16.7 20.6 81 23.6 26.0 91
Sylvan Road 7120 .6 6.2 10 -M 17.9 *
Younts Peak 8350 15.0 14.6 103 12.0 17.0 71
----- -----
Basin Index (%) 90 89
POWDER RIVER
Bear Trap Meadow 8200 4.6 3.2 144 11.4 10.6 108
Cloud Peak Reservoir 9860 15.9 15.7 101 17.6 16.4 107
Grave Springs 8550 8.9 8.6 103 11.9 11.8 101
Hansen Sawmill 8360 5.4 4.0 135 11.4 10.4 110
Middle Powder 7760 11.9 11.9 100 12.0 12.0 100
Powder River Pass 9480 9.5 10.2 93 10.9 15.2 72
Soldier Park 8720 5.2 5.0 104 12.1 11.2 108
----- -----
Basin Index (%) 105 100
TONGUE RIVER
Big Goose 7990 9.5 8.6 110 14.1 12.6 112
Bone Springs Div 9350 18.4 17.5 105 14.8 18.0 82
Burgess Junction 7880 13.7 12.2 112 16.2 14.7 110
Dome Lake 8880 14.4 11.0 131 16.4 15.7 104
Little Goose 8870 10.9 10.4 105 16.8 15.6 108
Sucker Creek 8880 14.4 12.6 114 19.8 16.9 117
Tie Creek 6870 4.5 2.6 173 15.2 13.6 112
----- -----
Basin Index (%) 115 106
BELLE FOURCHE
Blind Park 6890 .4 1.0 40 12.7 13.2 96
Cole Canyon 5910 3.2 1.0 320 13.2 11.5 115
North Rapid Creek 6130 2.6 .9 289 8.0 10.7 75
----- -----
Basin Index (%) 214 96
CHEYENNE RIVER BASIN
Blind Park 6890 .4 1.0 40 12.7 13.2 96
North Rapid Creek 6130 2.6 .9 289 8.0 10.7 75
----- -----
Basin Index (%) 158 87
UPPER N. PLATTE
Arapaho Ridge 10976 20.8 23.8 87 23.0 25.0 92
Blackhall Mtn 9839 28.9 31.6 91 32.4 34.3 94
Cinnabar Park 9707 16.6 19.4 86 23.0 25.9 89
Columbine 9167 19.4 18.4 105 27.9 28.6 98
Divide Peak 8730 12.9 17.6 73 22.4 24.6 91
Joe Wright 10158 22.8 22.0 104 32.1 29.6 108
Laprele Creek 8390 6.4 6.4 100 13.8 14.4 96
Med Bow 10512 35.1 -M * 33.5 -M *
Never Summer 10323 23.7 22.1 107 19.1 19.2 99
North French Creek 10153 27.3 31.8 86 29.3 32.4 90
Old Battle 9860 31.2 35.6 88 34.2 38.1 90
Rawah 9069 9.9 7.2 138 17.5 18.9 93
Sage Creek Basin 7850 2.8 2.5 112 11.9 14.4 83
Sand Lake 10098 28.9 31.0 93 29.0 28.8 101
South Brush Creek 8495 5.1 7.6 67 14.2 15.8 90
Tower 10620 42.5 45.9 93 45.4 45.0 101
Webber Springs 9260 20.2 21.6 94 28.0 29.0 97
Whiskey Park 9020 27.3 26.4 103 32.3 31.8 102
Willow Creek Pass 9523 14.7 15.6 94 16.1 15.7 103
Zirkel 9338 20.5 24.2 85 34.7 34.6 100
----- -----
Basin Index (%) 93 96
SWEETWATER
Deer Park 9700 13.6 15.3 89 18.8 21.1 89
Larsen Creek 9000 -M 3.6 * 14.0 15.6 90
South Pass 9040 11.9 15.0 79 15.8 18.1 87
----- -----
Basin Index (%) 84 89
LOWER N. PLATTE
Casper Mtn. 7920 12.3 13.1 94 18.1 17.4 104
Laprele Creek 8390 6.4 6.4 100 13.8 14.4 96
Reno Hill 8430 14.8 13.6 109 20.9 18.2 115
Windy Peak 7915 5.7 4.4 130 12.4 12.4 100
----- -----
Basin Index (%) 105 104
LARAMIE RIVER
Brooklyn Lake 10250 20.2 23.1 87 25.5 24.9 102
Cinnabar Park 9707 16.6 19.4 86 23.0 25.9 89
Crow Creek 8335 .0 .8 0 11.1 12.4 90
Deadman Hill 10239 20.7 19.7 105 20.6 21.0 98
Rawah 9069 9.9 7.2 138 17.5 18.9 93
Roach 9740 16.0 16.0 100 22.4 21.4 105
Windy Peak 7915 5.7 4.4 130 12.4 12.4 100
----- -----
Basin Index (%) 98 97
S. PLATTE
Crow Creek 8335 .0 .8 0 11.1 12.4 90
----- -----
Basin Index (%) 0 90
LITTLE SNAKE RIVER
Battle Mountain 7498 .2 .2 100* 17.4 17.4 100
Divide Peak 8730 12.9 17.6 73 22.4 24.6 91
Elk River 8739 13.8 13.3 104 24.2 22.2 109
Elkhead Divide 8800 14.9 -M * 23.7 -M *
Little Snake River 8928 20.1 24.0 84 34.1 36.4 94
Old Battle 9860 31.2 35.6 88 34.2 38.1 90
Sage Creek Basin 7850 2.8 2.5 112 11.9 14.4 83
Sandstone RS 8152 6.1 6.4 95 17.3 19.6 88
Whiskey Park 9020 27.3 26.4 103 32.3 31.8 102
----- -----
Basin Index (%) 91 95
UPPER GREEN RIVER
Big Sandy Opening 9080 11.6 12.2 95 14.1 14.8 95
Blind Bull Sum 8650 22.9 24.6 93 16.1 19.2 84
East Rim Divide 7930 4.0 7.0 57 12.0 12.2 98
Elkhart Park G.S. 9400 9.5 11.9 80 11.1 13.8 80
Gros Ventre Summit 8750 12.2 12.7 96 12.2 14.2 86
Gunsight Pass 9820 13.8 13.0 106 15.5 16.0 97
Indian Creek 9425 22.7 22.6 100 21.6 21.0 103
Kendall R.S. 7740 6.1 5.2 117 15.2 14.4 106
Larsen Creek 9000 -M 3.6 * 14.0 15.6 90
Loomis Park 8240 10.1 11.8 86 17.4 17.8 98
New Fork Lake 8340 6.1 6.6 92 10.8 11.8 92
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.5 7.7 84 17.0 15.0 113
Spring Creek Divide 9000 23.3 25.4 92 25.3 25.2 100
Triple Peak 8500 21.4 19.5 110 28.3 27.8 102
----- -----
Basin Index (%) 94 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 3.6 4.4 82 14.1 14.1 100
Buck Pasture 9632 11.4 -M * 18.4 -M *
EF Blacks Fork GS 9360 3.9 7.8 50 13.4 13.3 101
Hams Fork 7840 2.4 4.2 57 12.7 11.8 108
Henrys Fork 10182 -M -M * 12.5 -M *
Hewinta 9500 3.1 6.6 47 16.0 15.6 103
Hickerson Park 9122 .8 4.4 18 11.3 12.0 94
Hole-in-Rock 9168 .0 3.4 0 10.7 11.6 92
Indian Creek 9425 22.7 22.6 100 21.6 21.0 103
Kelley R.S. 8180 10.8 11.8 92 18.0 17.8 101
Spirit Lk 10235 7.4 12.2 61 17.4 19.4 90
Steel Creek Park 10158 14.7 16.9 87 18.9 18.4 103
----- -----
Basin Index (%) 74 99
UPPER BEAR RIVER
Bear River RS 8777 .2 1.5 13 15.1 13.8 109
Bug Lake 7987 14.1 15.2 93 20.5 19.4 106
Burts Miller Ranch 8000 .0 .0 * 9.0 8.7 103
Chalk Creek #1 9171 19.6 21.2 92 25.4 25.6 99
Giveout 6930 .2 .0 * 13.5 13.6 99
Hayden Fork 9130 4.0 9.9 40 23.8 23.1 103
Kelley R.S. 8180 10.8 11.8 92 18.0 17.8 101
Lily Lake 9133 7.7 10.4 74 17.3 17.8 97
Monte Cristo 8932 20.9 25.4 82 27.7 28.0 99
Salt River Summit 7640 11.4 9.0 127 17.7 17.6 101
Spring Creek Divide 9000 23.3 25.4 92 25.3 25.2 100
Trial Lake 9992 21.0 23.5 89 24.3 24.5 99
----- -----
Basin Index (%) 87 101
-----------------------------------------------------------------------------
-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.
