Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
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 MONDAY: DECEMBER 15 , 2025
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
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WYOMING
SNAKE RIVER
Base Camp 7040 2.8 5.3 53 8.5 8.4 101
Blind Bull Sum 8880 6.6 7.2 92 5.8 6.7 87
Cottonwood Creek 7710 7.0 6.6 106 11.7 8.6 136
East Rim Divide 8010 1.6 3.0 53 4.5 4.3 105
Grand Targhee 9260 11.7 16.1 73 13.0 13.1 99
Granite Creek 6770 2.3 4.6 50 7.3 6.9 106
Grassy Lake 7330 5.5 9.0 61 10.8 11.8 92
Gros Ventre Summit 8760 3.1 4.6 67 5.3 5.2 102
Gunsight Pass 9830 4.6 4.4 105 7.4 5.7 130
Lewis Lake Divide 7880 6.9 9.2 75 13.1 11.9 110
Loomis Park 8240 2.9 4.6 63 5.7 5.9 97
Phillips Bench 8160 5.2 7.6 68 9.4 9.3 101
Salt River Summit 7630 3.3 3.3 100 6.3 5.5 115
Snake River Station 6900 3.1 5.0 62 8.2 8.8 93
Somsen Ranch 6830 1.7 3.4 50 6.5 6.2 105
Spring Creek Divide 9020 6.7 7.4 91 9.7 8.0 121
Thumb Divide 7970 2.9 4.4 66 6.4 6.8 94
Togwotee Pass 9590 7.9 8.8 90 11.9 9.2 129
Triple Peak 8520 7.4 6.8 109 10.5 8.4 125
Two Ocean Plateau 9240 9.5 11.0 86 10.6 10.2 104
Willow Creek 8060 6.5 8.2 79 13.1 12.2 107
Younts Peak 8340 2.6 5.0 52 9.3 5.8 160
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Basin Index (%) 77 109
MADISON HEADWATERS IN WYOMING
Black Bear 8160 7.0 12.1 58 10.6 13.6 78
Canyon 7870 2.2 4.0 55 5.8 5.8 100
Madison Plateau 7710 2.9 7.2 40 7.7 9.4 82
West Yellowstone 6680 1.0 3.2 31 4.8 5.7 84
Whiskey Creek 6790 2.0 4.4 45 6.7 7.4 91
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Basin Index (%) 49 85
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 8.3 7.8 106 9.7 7.4 131
Canyon 7870 2.2 4.0 55 5.8 5.8 100
Evening Star 9040 11.4 9.0 127 16.4 11.4 144
Fisher Creek 9110 11.2 11.4 98 14.5 11.8 123
Monument Peak 8740 8.1 7.1 114 11.2 8.6 130
Northeast Entrance 7420 2.7 2.6 104 7.7 5.4 143
Parker Peak 9420 8.6 8.0 108 10.3 8.0 129
Sylvan Lake 8440 4.6 6.7 69 10.2 9.6 106
Thumb Divide 7970 2.9 4.4 66 6.4 6.8 94
Two Ocean Plateau 9240 9.5 11.0 86 10.6 10.2 104
White Mill 8730 10.1 7.6 133 11.3 8.7 130
Wolverine 7650 2.8 3.8 74 7.1 4.9 145
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Basin Index (%) 99 123
WIND RIVER
Burroughs Creek 8760 2.3 -M * 7.7 -M *
Castle Creek 8410 1.0 2.6 38 3.3 3.8 87
Cold Springs 9640 1.6 2.9 55 5.5 4.0 138
Deer Park 9690 3.2 5.0 64 4.6 6.5 71
Hobbs Park 10080 2.5 5.1 49 4.4 4.9 90
Kirwin 9580 3.4 4.2 81 7.1 5.1 139
Little Warm 9370 3.5 3.6 97 6.5 5.0 130
South Pass 9040 2.7 5.0 54 4.1 6.0 68
St. Lawrence Alt 8610 .3 -M * 2.4 -M *
Togwotee Pass 9590 7.9 8.8 90 11.9 9.2 129
Townsend Creek 8720 .5 3.2 16 3.4 4.8 71
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Basin Index (%) 65 103
BIGHORN BASIN
Bald Mtn. 9360 7.8 6.8 115 9.4 6.2 152
Bear Trap Meadow 8200 1.0 2.2 45 5.6 3.7 151
Bone Springs Div 9340 5.6 5.9 95 6.7 5.8 116
Grave Springs 8560 1.0 2.4 42 5.3 3.8 139
Kirwin 9580 3.4 4.2 81 7.1 5.1 139
Marquette 8800 .4 3.2 12 3.4 4.2 81
Middle Powder 7760 1.6 3.1 52 6.0 4.3 140
Owl Creek 8990 .3 2.1 14 2.9 2.9 100
Powder River Pass 9480 5.1 4.1 124 8.7 5.2 167
Shell Creek 9570 5.8 6.0 97 8.1 5.3 153
Timber Creek 7910 .0 2.0 0 2.5 3.6 69
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Basin Index (%) 76 131
SHOSHONE RIVER
Blackwater 9840 8.0 9.2 87 10.3 8.8 117
Evening Star 9040 11.4 9.0 127 16.4 11.4 144
Marquette 8800 .4 3.2 12 3.4 4.2 81
Sylvan Lake 8440 4.6 6.7 69 10.2 9.6 106
Sylvan Road 7140 2.5 4.1 61 8.2 7.4 111
Younts Peak 8340 2.6 5.0 52 9.3 5.8 160
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Basin Index (%) 79 122
POWDER RIVER
Bear Trap Meadow 8200 1.0 2.2 45 5.6 3.7 151
Cloud Peak Reservoir 9830 4.2 5.0 84 6.2 5.3 117
Grave Springs 8560 1.0 2.4 42 5.3 3.8 139
Hansen Sawmill 8360 1.4 2.4 58 6.0 3.4 176
Middle Powder 7760 1.6 3.1 52 6.0 4.3 140
Powder River Pass 9480 5.1 4.1 124 8.7 5.2 167
Soldier Park 8680 1.0 1.8 56 4.1 3.8 108
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Basin Index (%) 73 142
TONGUE RIVER
Big Goose 8010 1.2 2.8 43 4.6 4.2 110
Bone Springs Div 9340 5.6 5.9 95 6.7 5.8 116
Burgess Junction 7900 2.2 3.6 61 5.3 4.6 115
Dome Lake 8890 2.0 3.8 53 5.9 5.0 118
Little Goose 8560 1.5 2.8 54 5.3 4.7 113
Sucker Creek 8840 2.7 4.3 63 6.3 5.4 117
Tie Creek 7050 .8 1.6 50 4.7 4.4 107
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Basin Index (%) 65 114
BELLE FOURCHE
Blind Park 6900 2.1 2.2 95 7.2 4.4 164
Cole Canyon 5930 1.7 1.4 121 6.7 3.4 197
North Rapid Creek 6150 1.1 2.4 46 5.1 3.2 159
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Basin Index (%) 82 173
CHEYENNE RIVER BASIN
Blind Park 6900 2.1 2.2 95 7.2 4.4 164
North Rapid Creek 6150 1.1 2.4 46 5.1 3.2 159
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Basin Index (%) 70 162
UPPER N. PLATTE
Arapaho Ridge 10960 4.8 7.4 65 6.6 8.4 79
Blackhall Mtn 9830 5.7 9.2 62 8.6 10.8 80
Cinnabar Park 9670 5.2 6.9 75 8.0 8.5 94
Columbine 9170 5.6 6.0 93 7.8 8.2 95
Divide Peak 8700 3.5 5.8 60 6.6 7.7 86
Joe Wright 10140 3.5 6.8 51 7.6 9.6 79
Laprele Creek 8370 1.6 2.6 62 5.3 4.5 118
Med Bow 10500 10.9 -M * 13.2 -M *
Never Summer 10300 4.4 6.6 67 3.4 6.6 52
North French Creek 10150 8.8 8.8 100 11.0 9.2 120
Old Battle 9850 7.2 9.6 75 12.9 12.0 108
Rawah 9100 1.6 3.8 42 3.9 6.4 61
Sage Creek Basin 7830 2.1 3.9 54 4.5 5.2 87
Sand Lake 10080 6.4 8.9 72 8.6 8.6 100
South Brush Creek 8480 2.3 3.4 68 4.6 5.2 88
Tower 10610 9.2 13.2 70 11.3 13.9 81
Webber Springs 9250 4.8 7.0 69 8.4 9.4 89
Whiskey Park 8950 6.6 7.4 89 11.6 9.9 117
Willow Creek Pass 9520 1.8 4.7 38 3.7 5.3 70
Zirkel 9320 7.1 7.4 96 11.0 10.8 102
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Basin Index (%) 71 91
SWEETWATER
Deer Park 9690 3.2 5.0 64 4.6 6.5 71
Larsen Creek 8880 .5 2.2 23 4.2 4.5 93
South Pass 9040 2.7 5.0 54 4.1 6.0 68
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Basin Index (%) 52 76
LOWER N. PLATTE
Casper Mtn. 7940 1.0 4.1 24 4.0 5.5 73
Laprele Creek 8370 1.6 2.6 62 5.3 4.5 118
Reno Hill 8410 1.1 4.5 24 4.6 5.3 87
Windy Peak 7900 .8 2.1 38 4.2 4.0 105
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Basin Index (%) 34 94
LARAMIE RIVER
Brooklyn Lake 10250 5.4 6.2 87 8.3 7.0 119
Cinnabar Park 9670 5.2 6.9 75 8.0 8.5 94
Crow Creek 8320 .4 3.0 13 2.8 4.2 67
Deadman Hill 10240 4.4 6.0 73 4.3 6.3 68
Rawah 9100 1.6 3.8 42 3.9 6.4 61
Roach 9710 3.1 5.2 60 5.4 7.0 77
Windy Peak 7900 .8 2.1 38 4.2 4.0 105
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Basin Index (%) 63 85
S. PLATTE
Crow Creek 8320 .4 3.0 13 2.8 4.2 67
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Basin Index (%) 13 67
LITTLE SNAKE RIVER
Battle Mountain 7460 1.5 3.0 50 6.1 5.6 109
Divide Peak 8700 3.5 5.8 60 6.6 7.7 86
Elk River 8710 3.9 4.8 81 7.9 6.5 122
Elkhead Divide 8780 3.1 -M * 7.3 -M *
Little Snake River 8930 6.3 7.0 90 11.5 11.4 101
Old Battle 9850 7.2 9.6 75 12.9 12.0 108
Sage Creek Basin 7830 2.1 3.9 54 4.5 5.2 87
Sandstone RS 8150 3.1 3.4 91 6.2 6.5 95
Whiskey Park 8950 6.6 7.4 89 11.6 9.9 117
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Basin Index (%) 76 104
UPPER GREEN RIVER
Big Sandy Opening 9100 3.1 4.4 70 3.7 4.4 84
Blind Bull Sum 8880 6.6 7.2 92 5.8 6.7 87
East Rim Divide 8010 1.6 3.0 53 4.5 4.3 105
Elkhart Park G.S. 9410 3.2 4.0 80 5.0 5.0 100
Gros Ventre Summit 8760 3.1 4.6 67 5.3 5.2 102
Gunsight Pass 9830 4.6 4.4 105 7.4 5.7 130
Indian Creek 9400 6.0 7.6 79 8.0 6.9 116
Kendall R.S. 7790 1.9 3.8 50 5.7 5.2 110
Larsen Creek 8880 .5 2.2 23 4.2 4.5 93
Loomis Park 8240 2.9 4.6 63 5.7 5.9 97
New Fork Lake 8380 2.6 3.6 72 5.3 4.0 132
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 2.1 3.4 62 5.1 4.8 106
Spring Creek Divide 9020 6.7 7.4 91 9.7 8.0 121
Triple Peak 8520 7.4 6.8 109 10.5 8.4 125
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Basin Index (%) 78 109
LOWER GREEN RIVER
Blacks Fork Jct 8880 2.0 2.4 83 4.1 4.6 89
Buck Pasture 9620 3.5 -M * 5.8 -M *
EF Blacks Fork GS 9360 1.8 2.8 64 4.5 4.6 98
Hams Fork 7870 2.7 3.2 84 5.2 4.2 124
Henrys Fork 10180 -M -M * 5.0 -M *
Hewinta 9510 .7 2.7 26 4.6 5.4 85
Hickerson Park 9130 1.2 2.0 60 4.0 4.3 93
Hole-in-Rock 9170 .8 2.1 38 4.5 4.0 112
Indian Creek 9400 6.0 7.6 79 8.0 6.9 116
Kelley R.S. 8240 3.3 4.4 75 7.3 5.8 126
Spirit Lk 10240 3.6 4.2 86 7.6 6.7 113
Steel Creek Park 10140 3.9 4.8 81 5.8 6.2 94
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Basin Index (%) 72 106
UPPER BEAR RIVER
Bear River RS 8510 -M 2.6 * 3.7 4.8 77
Bug Lake 7980 2.2 4.6 48 7.2 6.5 111
Burts Miller Ranch 7900 .6 1.9 32 4.0 3.2 125
Chalk Creek #1 9160 2.6 6.8 38 6.9 8.0 86
Giveout 6940 1.1 2.4 46 5.5 4.7 117
Hayden Fork 9160 1.3 3.9 33 5.8 7.4 78
Kelley R.S. 8240 3.3 4.4 75 7.3 5.8 126
Lily Lake 9130 1.4 3.8 37 4.1 6.0 68
Monte Cristo 8930 3.8 6.9 55 8.9 8.4 106
Salt River Summit 7630 3.3 3.3 100 6.3 5.5 115
Spring Creek Divide 9020 6.7 7.4 91 9.7 8.0 121
Trial Lake 9970 4.6 6.0 77 5.8 7.2 81
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Basin Index (%) 60 100
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.
