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 SATURDAY: MARCH 15 , 2025
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7040 16.2 16.0 101 16.9 18.0 94
Blind Bull Sum 8880 23.2 21.2 109 16.8 16.1 104
Cottonwood Creek 7710 22.8 19.2 119 25.1 22.0 114
East Rim Divide 8010 10.0 9.8 102 9.9 10.1 98
Grand Targhee 9260 35.8 35.7 100 25.6 27.0 95
Granite Creek 6770 16.7 15.4 108 16.0 16.6 96
Grassy Lake 7330 27.1 28.4 95 30.0 31.5 95
Gros Ventre Summit 8760 10.8 10.8 100 10.6 10.5 101
Gunsight Pass 9830 12.4 11.7 106 11.6 12.2 95
Lewis Lake Divide 7880 26.2 26.9 97 28.9 28.6 101
Loomis Park 8240 14.4 13.6 106 14.5 14.8 98
Phillips Bench 8160 22.4 22.6 99 22.5 23.4 96
Salt River Summit 7630 14.5 11.6 125 12.1 13.4 90
Snake River Station 6900 17.9 15.6 115 18.7 19.2 97
Somsen Ranch 6830 13.0 11.7 111 14.3 14.5 99
Spring Creek Divide 9020 23.4 21.4 109 22.7 21.0 108
Thumb Divide 7970 11.9 14.1 84 11.4 15.0 76
Togwotee Pass 9590 20.4 21.0 97 21.8 22.2 98
Triple Peak 8520 -M 21.3 * -M 22.7 *
Two Ocean Plateau 9240 -M 25.4 * -M 23.1 *
Willow Creek 8060 31.3 26.4 119 30.7 28.8 107
Younts Peak 8340 12.0 13.2 91 11.6 13.0 89
----- -----
Basin Index (%) 104 98
MADISON HEADWATERS IN WYOMING
Black Bear 8160 28.3 33.0 86 28.1 32.4 87
Canyon 7870 10.6 -M * 11.0 -M *
Madison Plateau 7710 17.4 20.2 86 19.5 21.7 90
West Yellowstone 6680 9.2 10.0 92 10.4 12.8 81
Whiskey Creek 6790 12.9 14.2 91 16.5 17.2 96
----- -----
Basin Index (%) 88 89
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 16.9 19.4 87 15.8 17.7 89
Canyon 7870 10.6 -M * 11.0 -M *
Evening Star 9040 20.4 23.0 89 22.4 25.4 88
Fisher Creek 9110 23.5 28.2 83 25.0 28.1 89
Monument Peak 8740 15.1 18.2 83 17.6 18.6 95
Northeast Entrance 7420 9.4 9.4 100 10.5 11.6 91
Parker Peak 9420 19.0 18.6 102 18.8 17.8 106
Sylvan Lake 8440 15.2 17.4 87 18.0 20.1 90
Thumb Divide 7970 11.9 14.1 84 11.4 15.0 76
Two Ocean Plateau 9240 -M 25.4 * -M 23.1 *
White Mill 8730 18.7 21.2 88 17.5 20.6 85
Wolverine 7650 10.6 10.8 98 12.4 11.0 113
----- -----
Basin Index (%) 89 91
WIND RIVER
Burroughs Creek 8760 9.9 -M * 13.1 -M *
Castle Creek 8410 5.7 6.8 84 6.4 7.6 84
Cold Springs 9640 6.8 6.4 106 7.2 7.5 96
Deer Park 9690 16.2 11.7 138 17.3 14.8 117
Hobbs Park 10080 12.3 11.4 108 12.2 10.4 117
Kirwin 9580 8.5 9.3 91 10.2 10.0 102
Little Warm 9370 9.4 8.9 106 11.1 10.6 105
South Pass 9040 13.8 12.6 110 15.0 12.6 119
St. Lawrence Alt 8610 4.6 -M * 7.5 -M *
Togwotee Pass 9590 20.4 21.0 97 21.8 22.2 98
Townsend Creek 8720 8.9 7.8 114 11.0 8.9 124
----- -----
Basin Index (%) 106 107
BIGHORN BASIN
Bald Mtn. 9360 17.5 16.0 109 14.3 13.7 104
Bear Trap Meadow 8200 5.5 5.7 96 5.2 6.8 76
Bone Springs Div 9340 12.5 13.8 91 9.5 12.9 74
Grave Springs 8560 7.3 7.4 99 8.4 8.0 105
Kirwin 9580 8.5 9.3 91 10.2 10.0 102
Marquette 8800 7.7 6.0 128 8.8 7.2 122
Middle Powder 7760 8.5 8.9 96 6.8 8.6 79
Owl Creek 8990 4.8 4.6 104 5.4 5.0 108
Powder River Pass 9480 6.5 9.5 68 8.2 10.6 77
Shell Creek 9570 10.2 12.7 80 9.3 11.6 80
Timber Creek 7910 4.9 4.4 111 5.7 6.3 90
----- -----
Basin Index (%) 96 91
SHOSHONE RIVER
Blackwater 9840 19.2 19.9 96 18.2 18.8 97
Evening Star 9040 20.4 23.0 89 22.4 25.4 88
Marquette 8800 7.7 6.0 128 8.8 7.2 122
Sylvan Lake 8440 15.2 17.4 87 18.0 20.1 90
Sylvan Road 7140 9.4 10.7 88 11.1 14.8 75
Younts Peak 8340 12.0 13.2 91 11.6 13.0 89
----- -----
Basin Index (%) 93 91
POWDER RIVER
Bear Trap Meadow 8200 5.5 5.7 96 5.2 6.8 76
Cloud Peak Reservoir 9830 9.0 12.4 73 9.2 11.0 84
Grave Springs 8560 7.3 7.4 99 8.4 8.0 105
Hansen Sawmill 8360 3.8 5.8 66 5.4 7.2 75
Middle Powder 7760 8.5 8.9 96 6.8 8.6 79
Powder River Pass 9480 6.5 9.5 68 8.2 10.6 77
Soldier Park 8680 2.7 6.0 45 5.1 7.8 65
----- -----
Basin Index (%) 78 80
TONGUE RIVER
Big Goose 8010 5.5 7.0 79 7.0 8.4 83
Bone Springs Div 9340 12.5 13.8 91 9.5 12.9 74
Burgess Junction 7900 8.8 9.2 96 10.1 10.0 101
Dome Lake 8890 7.6 9.7 78 6.6 10.4 63
Little Goose 8560 7.0 8.2 85 8.2 9.8 84
Sucker Creek 8840 9.6 10.4 92 11.4 11.8 97
Tie Creek 7050 6.2 4.8 129 8.8 9.0 98
----- -----
Basin Index (%) 91 85
BELLE FOURCHE
Blind Park 6900 4.9 7.1 69 7.6 9.4 81
Cole Canyon 5930 5.6 5.2 108 7.0 7.5 93
North Rapid Creek 6150 4.2 6.5 65 6.1 7.8 78
----- -----
Basin Index (%) 78 84
CHEYENNE RIVER BASIN
Blind Park 6900 4.9 7.1 69 7.6 9.4 81
North Rapid Creek 6150 4.2 6.5 65 6.1 7.8 78
----- -----
Basin Index (%) 67 80
UPPER N. PLATTE
Arapaho Ridge 10960 18.6 18.6 100 18.0 18.8 96
Blackhall Mtn 9830 25.5 24.5 104 26.3 24.2 109
Cinnabar Park 9670 16.1 18.4 88 19.0 20.9 91
Columbine 9170 23.5 20.6 114 23.7 20.9 113
Divide Peak 8700 15.3 17.0 90 17.4 18.2 96
Joe Wright 10140 20.1 18.0 112 24.5 22.3 110
Laprele Creek 8370 7.5 8.4 89 8.3 9.8 85
Med Bow 10500 34.8 -M * 29.8 -M *
Never Summer 10300 16.9 17.2 98 14.0 14.5 97
North French Creek 10150 27.3 24.0 114 25.9 22.2 117
Old Battle 9850 24.6 26.0 95 24.8 28.5 87
Rawah 9100 10.1 9.6 105 12.7 13.2 96
Sage Creek Basin 7830 10.6 12.5 85 11.0 11.2 98
Sand Lake 10080 24.3 22.4 108 23.3 20.5 114
South Brush Creek 8480 10.3 10.4 99 10.1 11.6 87
Tower 10610 38.0 37.8 101 36.1 34.8 104
Webber Springs 9250 16.9 19.0 89 19.3 21.5 90
Whiskey Park 8950 23.8 24.2 98 25.0 24.0 104
Willow Creek Pass 9520 11.5 11.0 105 11.4 11.6 98
Zirkel 9320 22.8 25.1 91 27.1 26.6 102
----- -----
Basin Index (%) 100 101
SWEETWATER
Deer Park 9690 16.2 11.7 138 17.3 14.8 117
Larsen Creek 8880 7.3 10.2 72 11.2 11.2 100
South Pass 9040 13.8 12.6 110 15.0 12.6 119
----- -----
Basin Index (%) 108 113
LOWER N. PLATTE
Casper Mtn. 7940 8.2 11.0 75 9.4 11.1 85
Laprele Creek 8370 7.5 8.4 89 8.3 9.8 85
Reno Hill 8410 9.6 11.6 83 11.5 11.9 97
Windy Peak 7900 6.0 6.7 90 6.2 8.1 77
----- -----
Basin Index (%) 83 87
LARAMIE RIVER
Brooklyn Lake 10250 20.9 17.6 119 21.0 18.2 115
Cinnabar Park 9670 16.1 18.4 88 19.0 20.9 91
Crow Creek 8320 3.0 6.3 48 6.7 8.6 78
Deadman Hill 10240 15.4 14.4 107 15.8 14.6 108
Rawah 9100 10.1 9.6 105 12.7 13.2 96
Roach 9710 12.3 13.4 92 14.9 15.6 96
Windy Peak 7900 6.0 6.7 90 6.2 8.1 77
----- -----
Basin Index (%) 97 97
S. PLATTE
Crow Creek 8320 3.0 6.3 48 6.7 8.6 78
----- -----
Basin Index (%) 48 78
LITTLE SNAKE RIVER
Battle Mountain 7460 9.4 10.7 88 13.4 13.0 103
Divide Peak 8700 15.3 17.0 90 17.4 18.2 96
Elk River 8710 14.8 16.4 90 17.2 16.2 106
Elkhead Divide 8780 14.7 -M * 16.3 -M *
Little Snake River 8930 22.1 23.6 94 27.4 27.7 99
Old Battle 9850 24.6 26.0 95 24.8 28.5 87
Sage Creek Basin 7830 10.6 12.5 85 11.0 11.2 98
Sandstone RS 8150 12.6 11.3 112 12.7 15.8 80
Whiskey Park 8950 23.8 24.2 98 25.0 24.0 104
----- -----
Basin Index (%) 94 96
UPPER GREEN RIVER
Big Sandy Opening 9100 9.7 11.4 85 9.8 10.9 90
Blind Bull Sum 8880 23.2 21.2 109 16.8 16.1 104
East Rim Divide 8010 10.0 9.8 102 9.9 10.1 98
Elkhart Park G.S. 9410 11.0 10.8 102 10.9 10.9 100
Gros Ventre Summit 8760 10.8 10.8 100 10.6 10.5 101
Gunsight Pass 9830 12.4 11.7 106 11.6 12.2 95
Indian Creek 9400 23.1 20.4 113 19.9 17.2 116
Kendall R.S. 7790 12.6 10.8 117 12.5 11.8 106
Larsen Creek 8880 7.3 10.2 72 11.2 11.2 100
Loomis Park 8240 14.4 13.6 106 14.5 14.8 98
New Fork Lake 8380 9.6 9.4 102 -M 9.4 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 13.1 11.8 111 14.4 12.4 116
Spring Creek Divide 9020 23.4 21.4 109 22.7 21.0 108
Triple Peak 8520 -M 21.3 * -M 22.7 *
----- -----
Basin Index (%) 104 104
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.0 7.6 132 11.9 10.4 114
Buck Pasture 9620 12.6 -M * 16.5 -M *
EF Blacks Fork GS 9360 9.0 10.2 88 10.9 9.6 114
Hams Fork 7870 11.6 10.2 114 11.6 9.4 123
Henrys Fork 10180 -M -M * 11.7 -M *
Hewinta 9510 9.4 8.8 107 12.9 11.1 116
Hickerson Park 9130 6.4 6.8 94 8.5 8.7 98
Hole-in-Rock 9170 5.4 6.3 86 8.6 8.4 102
Indian Creek 9400 23.1 20.4 113 19.9 17.2 116
Kelley R.S. 8240 15.6 12.9 121 16.0 14.3 112
Spirit Lk 10240 11.6 10.4 112 12.6 14.3 88
Steel Creek Park 10140 14.1 12.6 112 15.3 13.0 118
----- -----
Basin Index (%) 109 110
UPPER BEAR RIVER
Bear River RS 8510 8.2 8.2 100 11.6 9.9 117
Bug Lake 7980 17.3 16.4 105 17.0 15.4 110
Burts Miller Ranch 7900 5.5 5.2 106 10.4 6.4 162
Chalk Creek #1 9160 17.4 19.8 88 20.1 20.3 99
Giveout 6940 8.7 8.2 106 10.9 10.3 106
Hayden Fork 9160 12.6 13.0 97 18.9 17.4 109
Kelley R.S. 8240 15.6 12.9 121 16.0 14.3 112
Lily Lake 9130 11.3 11.4 99 13.4 13.6 99
Monte Cristo 8930 23.2 23.2 100 21.6 21.9 99
Salt River Summit 7630 14.5 11.6 125 12.1 13.4 90
Spring Creek Divide 9020 23.4 21.4 109 22.7 21.0 108
Trial Lake 9970 22.4 19.3 116 21.9 19.2 114
----- -----
Basin Index (%) 106 107
-----------------------------------------------------------------------------
-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.
