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 SUNDAY: APRIL 21 , 2024
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 13.1 14.2 92 21.5 21.4 100
Blind Bull Sum 8650 24.4 25.4 96 17.0 18.8 90
Cottonwood Creek 7670 17.4 20.6 84 26.6 26.7 100
East Rim Divide 7930 2.8 9.4 30 11.4 11.8 97
Grand Targhee 9260 41.1 46.5 88 31.8 34.6 92
Granite Creek 6770 11.9 12.3 97 16.8 19.6 86
Grassy Lake 7265 27.1 32.5 83 36.1 37.3 97
Gros Ventre Summit 8750 11.2 13.3 84 14.1 13.6 104
Gunsight Pass 9820 12.9 13.5 96 15.4 14.9 103
Lewis Lake Divide 7850 30.8 33.2 93 36.9 35.1 105
Loomis Park 8240 9.3 13.2 70 15.5 17.4 89
Phillips Bench 8200 23.8 26.7 89 28.7 27.6 104
Salt River Summit 7640 12.0 11.0 109 15.1 17.1 88
Snake River Station 6920 12.6 15.0 84 23.8 23.3 102
Somsen Ranch 6800 11.6 7.0 166 21.9 17.4 126
Spring Creek Divide 9000 -M 25.5 * -M 24.6 *
Thumb Divide 7980 15.9 16.8 95 19.0 19.6 97
Togwotee Pass 9580 20.4 24.9 82 20.9 26.1 80
Triple Peak 8500 20.5 21.4 96 25.2 26.9 94
Two Ocean Plateau 9240 29.8 32.3 92 27.7 28.5 97
Willow Creek 8080 31.6 28.6 110 35.8 35.2 102
Younts Peak 8350 12.8 15.2 84 15.8 16.3 97
----- -----
Basin Index (%) 91 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 33.7 39.6 85 39.3 39.2 100
Canyon 7870 10.6 -M * 14.3 -M *
Madison Plateau 7750 20.7 23.5 88 24.2 25.8 94
West Yellowstone 6700 5.8 6.7 87 13.9 15.4 90
Whiskey Creek 6800 12.7 15.8 80 20.2 21.8 93
----- -----
Basin Index (%) 85 95
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 16.7 23.8 70 16.2 21.9 74
Canyon 7870 10.6 -M * 14.3 -M *
Evening Star 9200 21.2 27.1 78 27.7 30.4 91
Fisher Creek 9100 23.1 35.4 65 26.8 35.4 76
Monument Peak 8850 15.1 22.2 68 19.2 23.8 81
Northeast Entrance 7350 3.0 6.6 45 11.0 14.0 79
Parker Peak 9400 21.6 23.6 92 23.3 21.2 110
Sylvan Lake 8420 14.8 20.9 71 24.1 24.9 97
Thumb Divide 7980 15.9 16.8 95 19.0 19.6 97
Two Ocean Plateau 9240 29.8 32.3 92 27.7 28.5 97
White Mill 8700 18.1 26.0 70 18.7 24.2 77
Wolverine 7650 4.7 7.4 64 13.8 13.2 105
----- -----
Basin Index (%) 76 88
WIND RIVER
Burroughs Creek 8750 7.8 -M * 12.1 -M *
Castle Creek 8400 3.2 4.2 76 8.6 9.0 96
Cold Springs 9630 5.3 6.0 88 12.0 9.8 122
Deer Park 9700 17.3 16.0 108 21.3 20.3 105
Hobbs Park 10100 16.4 15.8 104 17.4 14.6 119
Kirwin 9550 13.0 11.9 109 16.6 13.6 122
Little Warm 9370 9.6 10.3 93 13.8 12.8 108
South Pass 9040 14.2 15.4 92 18.1 17.4 104
St. Lawrence Alt 8620 2.5 -M * 10.6 -M *
Togwotee Pass 9580 20.4 24.9 82 20.9 26.1 80
Townsend Creek 8700 9.1 9.6 95 14.5 13.0 112
----- -----
Basin Index (%) 95 105
BIGHORN BASIN
Bald Mtn. 9380 14.9 19.8 75 14.2 17.2 83
Bear Trap Meadow 8200 5.4 3.9 138 10.3 10.2 101
Bone Springs Div 9350 14.3 17.7 81 13.4 17.2 78
Grave Springs 8550 7.4 8.2 90 10.8 11.0 98
Kirwin 9550 13.0 11.9 109 16.6 13.6 122
Marquette 8760 14.2 8.0 178 17.6 10.7 164
Middle Powder 7760 11.7 12.0 98 11.3 11.1 102
Owl Creek 8975 4.5 3.8 118 9.4 7.2 131
Powder River Pass 9480 6.4 11.0 58 12.6 14.5 87
Shell Creek 9580 14.3 16.8 85 14.8 15.2 97
Timber Creek 7950 7.1 5.2 137 13.2 9.1 145
----- -----
Basin Index (%) 96 105
SHOSHONE RIVER
Blackwater 9780 23.2 25.2 92 24.7 24.0 103
Evening Star 9200 21.2 27.1 78 27.7 30.4 91
Marquette 8760 14.2 8.0 178 17.6 10.7 164
Sylvan Lake 8420 14.8 20.9 71 24.1 24.9 97
Sylvan Road 7120 .0 9.6 0 16.0 17.6 91
Younts Peak 8350 12.8 15.2 84 15.8 16.3 97
----- -----
Basin Index (%) 81 102
POWDER RIVER
Bear Trap Meadow 8200 5.4 3.9 138 10.3 10.2 101
Cloud Peak Reservoir 9860 12.9 15.8 82 16.3 15.1 108
Grave Springs 8550 7.4 8.2 90 10.8 11.0 98
Hansen Sawmill 8360 4.4 5.2 85 10.8 9.8 110
Middle Powder 7760 11.7 12.0 98 11.3 11.1 102
Powder River Pass 9480 6.4 11.0 58 12.6 14.5 87
Soldier Park 8720 2.4 6.5 37 11.4 10.8 106
----- -----
Basin Index (%) 81 101
TONGUE RIVER
Big Goose 7990 7.0 8.7 80 13.0 11.1 117
Bone Springs Div 9350 14.3 17.7 81 13.4 17.2 78
Burgess Junction 7880 9.5 11.8 81 13.6 13.8 99
Dome Lake 8880 -M 11.6 * 13.5 14.8 91
Little Goose 8870 9.3 10.7 87 14.7 13.9 106
Sucker Creek 8880 10.6 13.0 82 16.6 15.6 106
Tie Creek 6870 .8 4.4 18 13.7 12.6 109
----- -----
Basin Index (%) 78 99
BELLE FOURCHE
Blind Park 6890 -M 4.2 * 7.6 12.5 61
Cole Canyon 5910 .0 2.2 0 8.2 10.2 80
North Rapid Creek 6130 .8 3.9 21 10.1 10.2 99
----- -----
Basin Index (%) 13 79
CHEYENNE RIVER BASIN
Blind Park 6890 -M 4.2 * 7.6 12.5 61
North Rapid Creek 6130 .8 3.9 21 10.1 10.2 99
----- -----
Basin Index (%) 21 78
UPPER N. PLATTE
Arapaho Ridge 10976 22.8 23.9 95 23.6 24.0 98
Blackhall Mtn 9839 33.7 32.9 102 36.7 31.8 115
Cinnabar Park 9707 19.9 19.7 101 24.4 24.6 99
Columbine 9167 21.9 21.3 103 27.7 27.0 103
Divide Peak 8730 18.4 19.3 95 24.9 23.3 107
Joe Wright 10158 21.3 22.0 97 27.3 28.5 96
Laprele Creek 8390 6.6 7.6 87 12.5 13.1 95
Med Bow 10512 41.9 -M * 36.0 -M *
Never Summer 10323 22.2 22.0 101 17.4 18.7 93
North French Creek 10153 28.2 31.5 90 29.5 29.6 100
Old Battle 9860 34.1 33.5 102 35.2 35.9 98
Rawah 9069 11.3 10.2 111 18.5 17.4 106
Sage Creek Basin 7850 8.7 6.2 140 15.6 13.8 113
Sand Lake 10098 32.1 30.4 106 30.8 27.0 114
South Brush Creek 8495 9.4 9.0 104 13.6 14.8 92
Tower 10620 43.5 46.2 94 42.5 42.2 101
Webber Springs 9260 22.4 22.0 102 27.2 27.4 99
Whiskey Park 9020 30.0 26.6 113 31.4 30.0 105
Willow Creek Pass 9523 15.8 14.7 107 16.7 14.8 113
Zirkel 9338 22.1 25.6 86 30.6 33.2 92
----- -----
Basin Index (%) 100 102
SWEETWATER
Deer Park 9700 17.3 16.0 108 21.3 20.3 105
Larsen Creek 9000 5.1 8.0 64 14.9 15.1 99
South Pass 9040 14.2 15.4 92 18.1 17.4 104
----- -----
Basin Index (%) 93 103
LOWER N. PLATTE
Casper Mtn. 7920 10.9 13.9 78 16.0 15.6 103
Laprele Creek 8390 6.6 7.6 87 12.5 13.1 95
Reno Hill 8430 10.1 14.2 71 15.6 17.2 91
Windy Peak 7915 8.0 6.6 121 11.7 11.4 103
----- -----
Basin Index (%) 84 97
LARAMIE RIVER
Brooklyn Lake 10250 24.3 22.0 110 27.2 23.7 115
Cinnabar Park 9707 19.9 19.7 101 24.4 24.6 99
Crow Creek 8335 2.9 2.9 100 11.0 11.8 93
Deadman Hill 10239 21.4 17.7 121 20.0 19.6 102
Rawah 9069 11.3 10.2 111 18.5 17.4 106
Roach 9740 14.4 16.4 88 18.5 20.4 91
Windy Peak 7915 8.0 6.6 121 11.7 11.4 103
----- -----
Basin Index (%) 107 102
S. PLATTE
Crow Creek 8335 2.9 2.9 100 11.0 11.8 93
----- -----
Basin Index (%) 100 93
LITTLE SNAKE RIVER
Battle Mountain 7498 4.2 5.5 76 19.2 16.2 119
Divide Peak 8730 18.4 19.3 95 24.9 23.3 107
Elk River 8739 13.8 15.0 92 21.2 20.8 102
Elkhead Divide 8800 20.4 -M * 25.2 -M *
Little Snake River 8928 27.0 24.0 112 35.1 34.4 102
Old Battle 9860 34.1 33.5 102 35.2 35.9 98
Sage Creek Basin 7850 8.7 6.2 140 15.6 13.8 113
Sandstone RS 8152 12.1 10.0 121 18.9 18.8 101
Whiskey Park 9020 30.0 26.6 113 31.4 30.0 105
----- -----
Basin Index (%) 106 104
UPPER GREEN RIVER
Big Sandy Opening 9080 12.8 13.4 96 15.2 13.9 109
Blind Bull Sum 8650 24.4 25.4 96 17.0 18.8 90
East Rim Divide 7930 2.8 9.4 30 11.4 11.8 97
Elkhart Park G.S. 9400 9.9 13.0 76 12.8 13.2 97
Gros Ventre Summit 8750 11.2 13.3 84 14.1 13.6 104
Gunsight Pass 9820 12.9 13.5 96 15.4 14.9 103
Indian Creek 9425 22.4 24.5 91 20.6 20.4 101
Kendall R.S. 7740 5.0 8.7 57 13.3 13.8 96
Larsen Creek 9000 5.1 8.0 64 14.9 15.1 99
Loomis Park 8240 9.3 13.2 70 15.5 17.4 89
New Fork Lake 8340 4.5 9.2 49 -M 11.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.4 10.5 61 12.9 14.4 90
Spring Creek Divide 9000 -M 25.5 * -M 24.6 *
Triple Peak 8500 20.5 21.4 96 25.2 26.9 94
----- -----
Basin Index (%) 80 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.9 7.0 113 14.4 13.4 107
Buck Pasture 9632 12.8 -M * 17.2 -M *
EF Blacks Fork GS 9360 8.3 11.0 75 10.6 12.6 84
Hams Fork 7840 -M 7.1 * 11.9 11.5 103
Henrys Fork 10182 -M -M * 14.3 -M *
Hewinta 9500 7.8 7.8 100 15.4 15.0 103
Hickerson Park 9122 6.2 5.4 115 14.3 11.3 127
Hole-in-Rock 9168 5.7 6.0 95 11.3 10.9 104
Indian Creek 9425 22.4 24.5 91 20.6 20.4 101
Kelley R.S. 8180 14.0 14.0 100 18.2 17.2 106
Spirit Lk 10235 14.2 12.9 110 19.7 19.1 103
Steel Creek Park 10158 15.7 16.0 98 18.6 17.4 107
----- -----
Basin Index (%) 98 104
UPPER BEAR RIVER
Bear River RS 8777 6.1 3.0 203 14.9 13.0 115
Bug Lake 7987 18.9 17.2 110 23.6 18.8 126
Burts Miller Ranch 8000 2.6 .0 * 12.4 8.7 143
Chalk Creek #1 9171 23.5 22.6 104 26.3 24.2 109
Giveout 6930 3.8 2.7 141 13.4 13.2 102
Hayden Fork 9130 12.0 11.4 105 23.8 21.9 109
Kelley R.S. 8180 14.0 14.0 100 18.2 17.2 106
Lily Lake 9133 12.3 11.2 110 16.5 16.0 103
Monte Cristo 8932 28.7 26.1 110 30.0 27.0 111
Salt River Summit 7640 12.0 11.0 109 15.1 17.1 88
Spring Creek Divide 9000 -M 25.5 * -M 24.6 *
Trial Lake 9992 29.1 22.8 128 27.9 23.4 119
----- -----
Basin Index (%) 115 111
-----------------------------------------------------------------------------
-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.