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: FEBRUARY 25 , 2025
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7040 15.9 14.6 109 16.5 16.6 99
Blind Bull Sum 8880 21.9 18.8 116 15.8 14.6 108
Cottonwood Creek 7710 21.1 17.0 124 23.1 19.2 120
East Rim Divide 8010 9.0 8.4 107 9.1 8.8 103
Grand Targhee 9260 33.6 32.5 103 24.8 25.4 98
Granite Creek 6770 15.1 13.9 109 15.0 15.3 98
Grassy Lake 7330 26.2 25.2 104 28.3 27.7 102
Gros Ventre Summit 8760 9.6 9.2 104 9.4 8.8 107
Gunsight Pass 9830 11.7 10.0 117 11.0 10.8 102
Lewis Lake Divide 7880 25.1 23.9 105 28.1 26.2 107
Loomis Park 8240 13.4 12.3 109 13.5 13.3 102
Phillips Bench 8160 20.5 19.8 104 20.5 21.0 98
Salt River Summit 7630 13.1 10.6 124 11.1 12.4 90
Snake River Station 6900 17.1 14.0 122 18.2 17.2 106
Somsen Ranch 6830 11.7 10.6 110 13.0 13.1 99
Spring Creek Divide 9020 21.6 19.0 114 21.1 18.9 112
Thumb Divide 7970 11.2 12.2 92 10.8 13.2 82
Togwotee Pass 9590 18.0 18.0 100 19.6 19.2 102
Triple Peak 8520 22.8 17.9 127 22.8 19.8 115
Two Ocean Plateau 9240 22.1 22.2 100 18.7 19.8 94
Willow Creek 8060 27.8 22.3 125 28.2 25.5 111
Younts Peak 8340 11.6 11.4 102 11.1 11.4 97
----- -----
Basin Index (%) 110 103
MADISON HEADWATERS IN WYOMING
Black Bear 8160 26.2 29.1 90 26.2 27.6 95
Canyon 7870 10.2 -M * 10.6 -M *
Madison Plateau 7710 16.0 17.0 94 18.1 19.2 94
West Yellowstone 6680 8.9 8.6 103 9.8 10.9 90
Whiskey Creek 6790 12.0 11.8 102 15.5 14.6 106
----- -----
Basin Index (%) 95 96
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 16.3 17.4 94 15.2 15.8 96
Canyon 7870 10.2 -M * 10.6 -M *
Evening Star 9040 19.3 21.2 91 21.3 23.2 92
Fisher Creek 9110 22.7 26.0 87 24.2 25.0 97
Monument Peak 8740 14.2 15.8 90 16.6 16.8 99
Northeast Entrance 7420 8.9 8.4 106 9.8 10.5 93
Parker Peak 9420 17.9 16.7 107 18.0 15.4 117
Sylvan Lake 8440 14.7 15.1 97 17.4 18.0 97
Thumb Divide 7970 11.2 12.2 92 10.8 13.2 82
Two Ocean Plateau 9240 22.1 22.2 100 18.7 19.8 94
White Mill 8730 18.0 18.4 98 16.8 18.2 92
Wolverine 7650 10.9 9.2 118 12.0 9.8 122
----- -----
Basin Index (%) 96 97
WIND RIVER
Burroughs Creek 8760 9.3 -M * 12.5 -M *
Castle Creek 8410 5.4 6.0 90 5.9 6.8 87
Cold Springs 9640 5.8 5.6 104 6.0 6.8 88
Deer Park 9690 13.5 10.0 135 14.8 13.0 114
Hobbs Park 10080 10.6 9.6 110 10.4 8.3 125
Kirwin 9580 7.7 7.9 97 9.3 8.8 106
Little Warm 9370 8.3 7.6 109 10.2 9.1 112
South Pass 9040 11.1 11.1 100 12.2 10.8 113
St. Lawrence Alt 8610 3.3 -M * 5.7 -M *
Togwotee Pass 9590 18.0 18.0 100 19.6 19.2 102
Townsend Creek 8720 7.0 6.4 109 9.0 7.8 115
----- -----
Basin Index (%) 106 108
BIGHORN BASIN
Bald Mtn. 9360 16.8 14.4 117 13.7 12.3 111
Bear Trap Meadow 8200 4.6 4.7 98 4.8 6.0 80
Bone Springs Div 9340 12.1 12.2 99 9.2 11.7 79
Grave Springs 8560 6.0 6.1 98 7.2 6.6 109
Kirwin 9580 7.7 7.9 97 9.3 8.8 106
Marquette 8800 6.3 5.0 126 7.3 6.6 111
Middle Powder 7760 7.1 7.4 96 5.8 6.8 85
Owl Creek 8990 3.6 4.1 88 4.5 4.5 100
Powder River Pass 9480 6.0 8.4 71 7.7 9.6 80
Shell Creek 9570 9.8 11.5 85 9.0 10.7 84
Timber Creek 7910 3.5 3.2 109 4.3 5.6 77
----- -----
Basin Index (%) 98 93
SHOSHONE RIVER
Blackwater 9840 18.2 16.9 108 17.2 16.6 104
Evening Star 9040 19.3 21.2 91 21.3 23.2 92
Marquette 8800 6.3 5.0 126 7.3 6.6 111
Sylvan Lake 8440 14.7 15.1 97 17.4 18.0 97
Sylvan Road 7140 10.0 9.3 108 11.1 13.6 82
Younts Peak 8340 11.6 11.4 102 11.1 11.4 97
----- -----
Basin Index (%) 102 96
POWDER RIVER
Bear Trap Meadow 8200 4.6 4.7 98 4.8 6.0 80
Cloud Peak Reservoir 9830 8.1 10.8 75 8.4 9.8 86
Grave Springs 8560 6.0 6.1 98 7.2 6.6 109
Hansen Sawmill 8360 3.3 5.0 66 4.4 6.0 73
Middle Powder 7760 7.1 7.4 96 5.8 6.8 85
Powder River Pass 9480 6.0 8.4 71 7.7 9.6 80
Soldier Park 8680 2.6 5.2 50 4.7 6.8 69
----- -----
Basin Index (%) 79 83
TONGUE RIVER
Big Goose 8010 4.9 5.9 83 6.2 7.6 82
Bone Springs Div 9340 12.1 12.2 99 9.2 11.7 79
Burgess Junction 7900 8.4 7.9 106 9.3 8.8 106
Dome Lake 8890 6.8 8.4 81 6.8 9.3 73
Little Goose 8560 6.1 7.4 82 7.5 9.2 82
Sucker Creek 8840 9.0 9.1 99 11.0 10.2 108
Tie Creek 7050 5.4 4.4 123 8.0 8.2 98
----- -----
Basin Index (%) 95 89
BELLE FOURCHE
Blind Park 6900 5.1 6.2 82 7.5 8.2 91
Cole Canyon 5930 4.9 4.6 107 6.4 6.8 94
North Rapid Creek 6150 4.3 5.7 75 5.9 6.6 89
----- -----
Basin Index (%) 87 92
CHEYENNE RIVER BASIN
Blind Park 6900 5.1 6.2 82 7.5 8.2 91
North Rapid Creek 6150 4.3 5.7 75 5.9 6.6 89
----- -----
Basin Index (%) 79 91
UPPER N. PLATTE
Arapaho Ridge 10960 17.0 17.0 100 16.6 16.8 99
Blackhall Mtn 9830 23.1 22.0 105 24.2 21.8 111
Cinnabar Park 9670 15.6 16.4 95 17.8 18.7 95
Columbine 9170 22.0 18.0 122 21.9 18.5 118
Divide Peak 8700 13.8 14.7 94 16.1 16.6 97
Joe Wright 10140 17.8 15.5 115 22.4 19.6 114
Laprele Creek 8370 6.9 6.9 100 7.4 8.2 90
Med Bow 10500 32.2 -M * 28.0 -M *
Never Summer 10300 15.0 15.4 97 12.5 12.8 98
North French Creek 10150 25.6 21.4 120 24.2 20.0 121
Old Battle 9850 22.3 23.6 94 22.7 25.6 89
Rawah 9100 8.8 8.7 101 11.2 12.1 93
Sage Creek Basin 7830 9.8 11.3 87 10.0 10.3 97
Sand Lake 10080 22.6 20.6 110 22.0 18.0 122
South Brush Creek 8480 9.2 9.1 101 9.2 10.6 87
Tower 10610 35.1 34.2 103 34.2 31.0 110
Webber Springs 9250 15.4 16.4 94 17.6 19.4 91
Whiskey Park 8950 21.9 20.6 106 23.0 21.4 107
Willow Creek Pass 9520 10.3 10.4 99 10.2 10.5 97
Zirkel 9320 20.6 22.2 93 25.1 24.2 104
----- -----
Basin Index (%) 103 104
SWEETWATER
Deer Park 9690 13.5 10.0 135 14.8 13.0 114
Larsen Creek 8880 6.7 8.6 78 9.8 10.3 95
South Pass 9040 11.1 11.1 100 12.2 10.8 113
----- -----
Basin Index (%) 105 108
LOWER N. PLATTE
Casper Mtn. 7940 5.7 9.5 60 7.1 9.7 73
Laprele Creek 8370 6.9 6.9 100 7.4 8.2 90
Reno Hill 8410 8.0 9.6 83 9.8 10.4 94
Windy Peak 7900 5.2 5.8 90 5.4 7.3 74
----- -----
Basin Index (%) 81 83
LARAMIE RIVER
Brooklyn Lake 10250 19.4 16.0 121 19.8 16.4 121
Cinnabar Park 9670 15.6 16.4 95 17.8 18.7 95
Crow Creek 8320 2.9 5.9 49 6.1 7.7 79
Deadman Hill 10240 13.4 13.0 103 13.8 13.0 106
Rawah 9100 8.8 8.7 101 11.2 12.1 93
Roach 9710 10.7 12.0 89 13.2 14.5 91
Windy Peak 7900 5.2 5.8 90 5.4 7.3 74
----- -----
Basin Index (%) 98 97
S. PLATTE
Crow Creek 8320 2.9 5.9 49 6.1 7.7 79
----- -----
Basin Index (%) 49 79
LITTLE SNAKE RIVER
Battle Mountain 7460 9.2 9.8 94 12.4 11.9 104
Divide Peak 8700 13.8 14.7 94 16.1 16.6 97
Elk River 8710 13.5 14.3 94 15.8 14.6 108
Elkhead Divide 8780 13.2 -M * 14.7 -M *
Little Snake River 8930 20.3 21.4 95 25.4 26.7 95
Old Battle 9850 22.3 23.6 94 22.7 25.6 89
Sage Creek Basin 7830 9.8 11.3 87 10.0 10.3 97
Sandstone RS 8150 11.9 10.0 119 11.8 14.0 84
Whiskey Park 8950 21.9 20.6 106 23.0 21.4 107
----- -----
Basin Index (%) 98 97
UPPER GREEN RIVER
Big Sandy Opening 9100 8.4 9.7 87 8.5 9.4 90
Blind Bull Sum 8880 21.9 18.8 116 15.8 14.6 108
East Rim Divide 8010 9.0 8.4 107 9.1 8.8 103
Elkhart Park G.S. 9410 10.1 9.3 109 9.8 9.8 100
Gros Ventre Summit 8760 9.6 9.2 104 9.4 8.8 107
Gunsight Pass 9830 11.7 10.0 117 11.0 10.8 102
Indian Creek 9400 20.3 17.6 115 17.8 15.4 116
Kendall R.S. 7790 12.1 9.6 126 11.8 10.6 111
Larsen Creek 8880 6.7 8.6 78 9.8 10.3 95
Loomis Park 8240 13.4 12.3 109 13.5 13.3 102
New Fork Lake 8380 8.9 8.2 109 -M 8.2 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 12.0 10.4 115 13.3 11.0 121
Spring Creek Divide 9020 21.6 19.0 114 21.1 18.9 112
Triple Peak 8520 22.8 17.9 127 22.8 19.8 115
----- -----
Basin Index (%) 112 108
LOWER GREEN RIVER
Blacks Fork Jct 8880 9.3 6.4 145 11.1 9.5 117
Buck Pasture 9620 10.9 -M * 14.7 -M *
EF Blacks Fork GS 9360 8.2 8.0 102 10.0 8.0 125
Hams Fork 7870 10.5 8.8 119 10.1 8.6 117
Henrys Fork 10180 -M -M * 9.8 -M *
Hewinta 9510 8.2 7.5 109 11.9 10.2 117
Hickerson Park 9130 5.6 5.8 97 7.6 7.6 100
Hole-in-Rock 9170 3.9 5.4 72 7.7 7.4 104
Indian Creek 9400 20.3 17.6 115 17.8 15.4 116
Kelley R.S. 8240 13.6 11.6 117 14.2 13.1 108
Spirit Lk 10240 8.7 8.8 99 10.0 12.4 81
Steel Creek Park 10140 12.7 11.2 113 14.1 11.9 118
----- -----
Basin Index (%) 111 110
UPPER BEAR RIVER
Bear River RS 8510 8.0 7.2 111 10.6 9.0 118
Bug Lake 7980 15.6 14.6 107 15.0 14.2 106
Burts Miller Ranch 7900 5.2 5.0 104 9.7 5.7 170
Chalk Creek #1 9160 15.4 16.2 95 18.2 17.1 106
Giveout 6940 8.0 7.6 105 10.0 9.6 104
Hayden Fork 9160 11.5 11.4 101 16.9 15.6 108
Kelley R.S. 8240 13.6 11.6 117 14.2 13.1 108
Lily Lake 9130 9.9 9.6 103 12.1 11.8 103
Monte Cristo 8930 19.8 19.8 100 19.2 19.4 99
Salt River Summit 7630 13.1 10.6 124 11.1 12.4 90
Spring Creek Divide 9020 21.6 19.0 114 21.1 18.9 112
Trial Lake 9970 18.4 17.2 107 19.2 17.4 110
----- -----
Basin Index (%) 107 108
-----------------------------------------------------------------------------
-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.
