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 SUNDAY: DECEMBER 21 , 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 5.2 5.9 88 10.9 8.8 124
Blind Bull Sum 8880 10.0 8.0 125 7.9 7.5 105
Cottonwood Creek 7710 8.3 7.4 112 13.2 9.1 145
East Rim Divide 8010 2.9 3.6 81 5.9 4.4 134
Grand Targhee 9260 -M 17.0 * -M 13.8 *
Granite Creek 6770 4.7 4.8 98 9.8 7.6 129
Grassy Lake 7330 6.7 10.0 67 12.2 12.9 95
Gros Ventre Summit 8760 5.4 4.8 112 7.2 5.5 131
Gunsight Pass 9820 6.4 4.8 133 8.9 5.9 151
Lewis Lake Divide 7880 9.9 10.2 97 16.2 12.9 126
Loomis Park 8240 5.3 5.2 102 8.1 6.4 127
Phillips Bench 8170 8.0 8.3 96 12.1 9.6 126
Salt River Summit 7630 4.9 3.8 129 7.8 5.8 134
Snake River Station 6900 4.2 5.4 78 9.6 9.2 104
Somsen Ranch 6830 2.5 3.5 71 7.8 6.6 118
Spring Creek Divide 9020 9.2 7.8 118 11.8 8.7 136
Thumb Divide 7970 4.8 5.2 92 8.1 7.3 111
Togwotee Pass 9590 10.2 9.6 106 14.6 9.8 149
Triple Peak 8520 10.5 7.6 138 13.5 9.2 147
Two Ocean Plateau 9240 13.2 11.2 118 13.6 10.8 126
Willow Creek 8060 8.6 9.3 92 14.9 12.8 116
Younts Peak 8340 6.4 5.6 114 11.6 6.2 187
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Basin Index (%) 104 128
MADISON HEADWATERS IN WYOMING
Black Bear 8160 9.0 13.6 66 12.7 14.8 86
Canyon 7870 3.4 4.6 74 7.1 6.2 115
Madison Plateau 7710 4.7 7.6 62 9.5 10.2 93
West Yellowstone 6680 2.0 3.6 56 5.9 5.8 102
Whiskey Creek 6790 3.3 4.8 69 8.3 7.8 106
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Basin Index (%) 65 97
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.4 8.7 120 12.0 8.2 146
Canyon 7870 3.4 4.6 74 7.1 6.2 115
Evening Star 9030 13.8 10.4 133 18.3 12.3 149
Fisher Creek 9110 15.3 13.0 118 17.8 12.6 141
Monument Peak 8740 9.6 7.8 123 12.8 9.2 139
Northeast Entrance 7420 3.7 2.9 128 8.7 5.8 150
Parker Peak 9420 10.6 8.6 123 12.2 8.8 139
Sylvan Lake 8440 5.8 7.5 77 11.7 10.2 115
Thumb Divide 7970 4.8 5.2 92 8.1 7.3 111
Two Ocean Plateau 9240 13.2 11.2 118 13.6 10.8 126
White Mill 8730 12.6 9.2 137 13.8 9.2 150
Wolverine 7660 3.8 4.2 90 9.2 5.4 170
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Basin Index (%) 115 137
WIND RIVER
Burroughs Creek 8760 4.3 -M * 10.2 -M *
Castle Creek 8410 2.4 3.0 80 4.7 4.1 115
Cold Springs 9640 2.7 3.1 87 7.0 4.2 167
Deer Park 9690 5.8 5.1 114 7.4 6.9 107
Hobbs Park 10080 4.0 5.6 71 5.8 5.2 112
Kirwin 9580 5.7 4.8 119 9.8 5.2 188
Little Warm 9370 4.6 3.8 121 7.6 5.4 141
South Pass 9040 5.0 5.3 94 6.5 6.4 102
St. Lawrence Alt 8610 .9 -M * 3.6 -M *
Togwotee Pass 9590 10.2 9.6 106 14.6 9.8 149
Townsend Creek 8720 1.6 3.2 50 4.5 5.0 90
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Basin Index (%) 97 130
BIGHORN BASIN
Bald Mtn. 9360 8.2 7.4 111 9.6 6.8 141
Bear Trap Meadow 8200 2.0 2.5 80 5.8 3.9 149
Bone Springs Div 9340 6.0 6.4 94 7.0 6.3 111
Grave Springs 8560 1.5 2.8 54 5.3 3.9 136
Kirwin 9580 5.7 4.8 119 9.8 5.2 188
Marquette 8800 .6 3.2 19 3.7 4.3 86
Middle Powder 7760 2.1 3.5 60 6.2 4.6 135
Owl Creek 8990 .7 2.2 32 3.7 2.9 128
Powder River Pass 9480 6.2 4.4 141 9.8 5.4 181
Shell Creek 9570 6.3 6.6 95 8.6 5.8 148
Timber Creek 7910 .1 1.9 5 2.4 3.8 63
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Basin Index (%) 86 136
SHOSHONE RIVER
Blackwater 9830 10.1 9.6 105 12.2 9.1 134
Evening Star 9030 13.8 10.4 133 18.3 12.3 149
Marquette 8800 .6 3.2 19 3.7 4.3 86
Sylvan Lake 8440 5.8 7.5 77 11.7 10.2 115
Sylvan Road 7140 3.6 4.6 78 9.4 7.7 122
Younts Peak 8340 6.4 5.6 114 11.6 6.2 187
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Basin Index (%) 99 134
POWDER RIVER
Bear Trap Meadow 8200 2.0 2.5 80 5.8 3.9 149
Cloud Peak Reservoir 9830 5.3 5.5 96 7.2 5.8 124
Grave Springs 8560 1.5 2.8 54 5.3 3.9 136
Hansen Sawmill 8360 1.8 2.6 69 6.8 3.8 179
Middle Powder 7760 2.1 3.5 60 6.2 4.6 135
Powder River Pass 9480 6.2 4.4 141 9.8 5.4 181
Soldier Park 8680 1.2 2.0 60 4.5 3.9 115
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Basin Index (%) 86 146
TONGUE RIVER
Big Goose 8010 1.6 2.9 55 5.2 4.4 118
Bone Springs Div 9340 6.0 6.4 94 7.0 6.3 111
Burgess Junction 7910 2.5 3.6 69 5.6 5.0 112
Dome Lake 8890 2.6 4.0 65 6.8 5.4 126
Little Goose 8560 2.2 3.4 65 5.9 5.2 113
Sucker Creek 8840 3.0 4.6 65 6.6 5.6 118
Tie Creek 7050 .6 1.4 43 4.9 4.6 107
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Basin Index (%) 70 115
BELLE FOURCHE
Blind Park 6900 2.3 2.4 96 7.7 4.5 171
Cole Canyon 5930 1.7 1.6 106 6.9 3.5 197
North Rapid Creek 6150 1.4 2.6 54 5.5 3.4 162
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Basin Index (%) 82 176
CHEYENNE RIVER BASIN
Blind Park 6900 2.3 2.4 96 7.7 4.5 171
North Rapid Creek 6150 1.4 2.6 54 5.5 3.4 162
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Basin Index (%) 74 167
UPPER N. PLATTE
Arapaho Ridge 10960 5.4 8.7 62 7.1 9.0 79
Blackhall Mtn 9830 6.6 10.2 65 9.6 11.7 82
Cinnabar Park 9670 5.8 7.2 81 8.7 9.0 97
Columbine 9170 6.5 7.2 90 8.6 9.0 96
Divide Peak 8700 3.5 6.4 55 6.7 8.6 78
Joe Wright 10140 3.9 7.4 53 8.9 10.4 86
Laprele Creek 8370 1.8 3.0 60 5.5 4.7 117
Med Bow 10500 12.1 -M * 13.9 -M *
Never Summer 10300 5.0 7.4 68 3.7 7.2 51
North French Creek 10150 9.3 9.5 98 11.4 9.8 116
Old Battle 9840 8.4 10.5 80 13.6 12.9 105
Rawah 9100 2.6 4.1 63 4.9 7.0 70
Sage Creek Basin 7830 2.1 4.3 49 4.7 5.5 85
Sand Lake 10080 7.1 9.6 74 9.2 9.6 96
South Brush Creek 8480 2.4 4.0 60 4.7 5.4 87
Tower 10610 10.5 14.1 74 12.9 15.6 83
Webber Springs 9250 5.9 7.9 75 9.1 10.1 90
Whiskey Park 8950 7.4 8.2 90 12.5 10.6 118
Willow Creek Pass 9520 2.0 5.2 38 4.0 5.8 69
Zirkel 9320 8.9 8.0 111 12.5 11.4 110
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Basin Index (%) 74 91
SWEETWATER
Deer Park 9690 5.8 5.1 114 7.4 6.9 107
Larsen Creek 8880 1.6 2.6 62 5.4 4.8 112
South Pass 9040 5.0 5.3 94 6.5 6.4 102
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Basin Index (%) 95 107
LOWER N. PLATTE
Casper Mtn. 7940 1.0 4.7 21 4.0 5.8 69
Laprele Creek 8370 1.8 3.0 60 5.5 4.7 117
Reno Hill 8410 1.2 5.0 24 4.9 5.7 86
Windy Peak 7890 .8 2.6 31 4.3 4.2 102
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Basin Index (%) 31 92
LARAMIE RIVER
Brooklyn Lake 10250 6.3 7.0 90 9.2 7.4 124
Cinnabar Park 9670 5.8 7.2 81 8.7 9.0 97
Crow Creek 8320 .3 3.2 9 3.0 4.6 65
Deadman Hill 10240 4.9 6.9 71 5.4 7.0 77
Rawah 9100 2.6 4.1 63 4.9 7.0 70
Roach 9710 3.7 5.6 66 6.1 7.6 80
Windy Peak 7890 .8 2.6 31 4.3 4.2 102
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Basin Index (%) 67 89
S. PLATTE
Crow Creek 8320 .3 3.2 9 3.0 4.6 65
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Basin Index (%) 9 65
LITTLE SNAKE RIVER
Battle Mountain 7460 1.5 3.5 43 6.2 6.0 103
Divide Peak 8700 3.5 6.4 55 6.7 8.6 78
Elk River 8710 4.5 5.4 83 8.5 7.0 121
Elkhead Divide 8780 3.6 -M * 7.7 -M *
Little Snake River 8930 7.1 7.9 90 12.4 13.0 95
Old Battle 9840 8.4 10.5 80 13.6 12.9 105
Sage Creek Basin 7830 2.1 4.3 49 4.7 5.5 85
Sandstone RS 8150 3.2 4.0 80 6.2 7.1 87
Whiskey Park 8950 7.4 8.2 90 12.5 10.6 118
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Basin Index (%) 75 100
UPPER GREEN RIVER
Big Sandy Opening 9100 4.2 4.6 91 4.6 4.9 94
Blind Bull Sum 8880 10.0 8.0 125 7.9 7.5 105
East Rim Divide 8010 2.9 3.6 81 5.9 4.4 134
Elkhart Park G.S. 9410 4.6 4.4 105 6.3 5.5 115
Gros Ventre Summit 8760 5.4 4.8 112 7.2 5.5 131
Gunsight Pass 9820 6.4 4.8 133 8.9 5.9 151
Indian Creek 9400 8.5 7.6 112 9.8 7.6 129
Kendall R.S. 7790 4.8 4.2 114 8.7 5.5 158
Larsen Creek 8880 1.6 2.6 62 5.4 4.8 112
Loomis Park 8240 5.3 5.2 102 8.1 6.4 127
New Fork Lake 8380 4.5 3.8 118 7.2 4.4 164
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 3.8 4.2 90 7.0 5.4 130
Spring Creek Divide 9020 9.2 7.8 118 11.8 8.7 136
Triple Peak 8520 10.5 7.6 138 13.5 9.2 147
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Basin Index (%) 112 131
LOWER GREEN RIVER
Blacks Fork Jct 8880 3.4 2.8 121 5.5 5.1 108
Buck Pasture 9630 5.2 -M * 7.4 -M *
EF Blacks Fork GS 9360 2.6 3.4 76 5.4 4.8 112
Hams Fork 7860 4.4 3.6 122 6.3 4.6 137
Henrys Fork 10180 -M -M * 5.8 -M *
Hewinta 9510 2.2 2.9 76 6.3 5.8 109
Hickerson Park 9120 1.4 2.4 58 4.4 4.6 96
Hole-in-Rock 9170 1.4 2.4 58 5.2 4.4 118
Indian Creek 9400 8.5 7.6 112 9.8 7.6 129
Kelley R.S. 8240 5.0 4.9 102 8.9 6.2 144
Spirit Lk 10240 3.9 4.5 87 7.8 7.1 110
Steel Creek Park 10140 5.3 5.2 102 7.4 6.6 112
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Basin Index (%) 96 118
UPPER BEAR RIVER
Bear River RS 8510 1.6 2.8 57 4.7 5.0 94
Bug Lake 7980 3.8 5.2 73 8.7 6.8 128
Burts Miller Ranch 7900 1.2 2.1 57 5.0 3.4 147
Chalk Creek #1 9160 4.4 7.8 56 8.6 9.3 92
Giveout 6940 2.4 2.6 92 6.9 5.1 135
Hayden Fork 9170 3.2 4.4 73 7.7 7.8 99
Kelley R.S. 8240 5.0 4.9 102 8.9 6.2 144
Lily Lake 9130 2.8 4.4 64 5.4 6.6 82
Monte Cristo 8930 5.3 7.7 69 10.3 9.4 110
Salt River Summit 7630 4.9 3.8 129 7.8 5.8 134
Spring Creek Divide 9020 9.2 7.8 118 11.8 8.7 136
Trial Lake 9970 6.8 6.5 105 7.8 8.1 96
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Basin Index (%) 84 114
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.
