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 SATURDAY: DECEMBER 20 , 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 5.3 5.7 93 10.8 8.8 123
Blind Bull Sum 8880 10.0 7.8 128 7.8 7.4 105
Cottonwood Creek 7710 8.4 7.3 115 13.1 9.0 146
East Rim Divide 8010 3.0 3.6 83 5.9 4.4 134
Grand Targhee 9260 -M 17.0 * -M 13.6 *
Granite Creek 6770 4.7 4.8 98 9.8 7.6 129
Grassy Lake 7330 6.8 9.8 69 12.3 12.6 98
Gros Ventre Summit 8760 5.4 4.8 112 7.3 5.5 133
Gunsight Pass 9820 6.4 4.8 133 8.9 5.8 153
Lewis Lake Divide 7880 9.8 10.0 98 16.2 12.4 131
Loomis Park 8240 5.3 5.1 104 8.0 6.4 125
Phillips Bench 8170 8.1 8.2 99 12.2 9.6 127
Salt River Summit 7630 4.9 3.8 129 7.8 5.7 137
Snake River Station 6900 4.1 5.4 76 9.7 9.2 105
Somsen Ranch 6830 2.7 3.4 79 7.8 6.6 118
Spring Creek Divide 9020 -M 7.8 * -M 8.6 *
Thumb Divide 7970 4.7 5.0 94 8.2 7.3 112
Togwotee Pass 9590 10.2 9.6 106 14.5 9.8 148
Triple Peak 8520 10.3 7.6 136 13.3 9.1 146
Two Ocean Plateau 9240 13.3 11.2 119 13.7 10.8 127
Willow Creek 8060 8.6 9.1 95 14.8 12.7 117
Younts Peak 8340 6.2 5.6 111 11.6 6.1 190
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Basin Index (%) 104 128
MADISON HEADWATERS IN WYOMING
Black Bear 8160 9.0 13.0 69 12.6 14.2 89
Canyon 7870 3.4 4.6 74 7.1 6.2 115
Madison Plateau 7710 4.6 7.4 62 9.5 10.1 94
West Yellowstone 6680 2.1 3.6 58 5.9 5.8 102
Whiskey Creek 6790 3.3 4.8 69 8.3 7.8 106
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Basin Index (%) 67 98
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.5 8.4 125 12.0 8.0 150
Canyon 7870 3.4 4.6 74 7.1 6.2 115
Evening Star 9030 13.9 10.2 136 18.4 12.2 151
Fisher Creek 9110 15.3 12.6 121 17.8 12.6 141
Monument Peak 8740 9.6 7.8 123 12.9 9.1 142
Northeast Entrance 7420 3.7 2.8 132 8.7 5.6 155
Parker Peak 9420 10.7 8.4 127 12.0 8.6 140
Sylvan Lake 8440 5.9 7.4 80 11.7 10.0 117
Thumb Divide 7970 4.7 5.0 94 8.2 7.3 112
Two Ocean Plateau 9240 13.3 11.2 119 13.7 10.8 127
White Mill 8730 12.8 9.2 139 13.8 9.0 153
Wolverine 7660 3.8 4.2 90 9.1 5.4 169
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Basin Index (%) 117 139
WIND RIVER
Burroughs Creek 8760 4.5 -M * 10.2 -M *
Castle Creek 8410 2.5 3.0 83 4.8 4.1 117
Cold Springs 9640 2.7 3.1 87 6.8 4.2 162
Deer Park 9690 5.8 5.0 116 7.4 6.7 110
Hobbs Park 10080 4.1 5.4 76 5.8 5.1 114
Kirwin 9580 5.8 4.7 123 9.9 5.2 190
Little Warm 9370 4.6 3.7 124 7.6 5.3 143
South Pass 9040 4.9 5.2 94 6.4 6.4 100
St. Lawrence Alt 8610 1.0 -M * 3.4 -M *
Togwotee Pass 9590 10.2 9.6 106 14.5 9.8 148
Townsend Creek 8720 1.6 3.2 50 4.5 5.0 90
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Basin Index (%) 98 131
BIGHORN BASIN
Bald Mtn. 9360 8.2 7.2 114 9.6 6.6 145
Bear Trap Meadow 8200 1.8 2.4 75 5.9 3.8 155
Bone Springs Div 9340 6.1 6.3 97 7.0 6.2 113
Grave Springs 8560 1.6 2.6 62 5.4 3.9 138
Kirwin 9580 5.8 4.7 123 9.9 5.2 190
Marquette 8800 .5 3.2 16 3.8 4.2 90
Middle Powder 7760 2.1 3.4 62 6.2 4.6 135
Owl Creek 8990 .7 2.2 32 3.3 2.9 114
Powder River Pass 9480 6.2 4.4 141 9.9 5.3 187
Shell Creek 9570 6.4 6.6 97 8.6 5.8 148
Timber Creek 7910 .1 1.9 5 2.4 3.8 63
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Basin Index (%) 88 138
SHOSHONE RIVER
Blackwater 9830 10.1 9.4 107 12.2 9.0 136
Evening Star 9030 13.9 10.2 136 18.4 12.2 151
Marquette 8800 .5 3.2 16 3.8 4.2 90
Sylvan Lake 8440 5.9 7.4 80 11.7 10.0 117
Sylvan Road 7140 3.6 4.6 78 9.6 7.6 126
Younts Peak 8340 6.2 5.6 111 11.6 6.1 190
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Basin Index (%) 100 137
POWDER RIVER
Bear Trap Meadow 8200 1.8 2.4 75 5.9 3.8 155
Cloud Peak Reservoir 9830 5.3 5.3 100 7.1 5.7 125
Grave Springs 8560 1.6 2.6 62 5.4 3.9 138
Hansen Sawmill 8360 1.8 2.6 69 6.7 3.8 176
Middle Powder 7760 2.1 3.4 62 6.2 4.6 135
Powder River Pass 9480 6.2 4.4 141 9.9 5.3 187
Soldier Park 8680 1.1 2.0 55 4.5 3.9 115
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Basin Index (%) 88 147
TONGUE RIVER
Big Goose 8010 1.6 2.9 55 5.2 4.4 118
Bone Springs Div 9340 6.1 6.3 97 7.0 6.2 113
Burgess Junction 7910 2.5 3.6 69 5.5 5.0 110
Dome Lake 8890 2.6 3.9 67 6.8 5.4 126
Little Goose 8560 2.3 3.4 68 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 4.8 4.6 104
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Basin Index (%) 72 115
BELLE FOURCHE
Blind Park 6900 2.3 2.4 96 7.8 4.5 173
Cole Canyon 5930 1.7 1.6 106 6.9 3.5 197
North Rapid Creek 6150 1.4 2.6 54 5.6 3.4 165
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Basin Index (%) 82 178
CHEYENNE RIVER BASIN
Blind Park 6900 2.3 2.4 96 7.8 4.5 173
North Rapid Creek 6150 1.4 2.6 54 5.6 3.4 165
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Basin Index (%) 74 170
UPPER N. PLATTE
Arapaho Ridge 10960 5.2 8.2 63 6.8 8.8 77
Blackhall Mtn 9830 6.2 10.1 61 9.2 11.7 79
Cinnabar Park 9670 5.5 7.1 77 8.4 8.8 95
Columbine 9170 5.9 6.8 87 8.3 8.9 93
Divide Peak 8700 3.6 6.4 56 6.8 8.6 79
Joe Wright 10140 3.3 7.2 46 8.0 10.1 79
Laprele Creek 8370 1.8 2.8 64 5.5 4.7 117
Med Bow 10500 12.0 -M * 13.8 -M *
Never Summer 10300 4.6 6.9 67 3.6 6.8 53
North French Creek 10150 9.1 9.5 96 11.4 9.7 118
Old Battle 9840 8.0 10.2 78 13.4 12.7 106
Rawah 9100 1.8 4.0 45 4.0 6.8 59
Sage Creek Basin 7830 2.2 4.2 52 4.7 5.5 85
Sand Lake 10080 7.1 9.4 76 9.2 9.5 97
South Brush Creek 8480 2.5 3.8 66 4.7 5.4 87
Tower 10610 9.0 14.0 64 11.7 15.3 76
Webber Springs 9250 5.6 7.6 74 9.0 10.0 90
Whiskey Park 8950 6.8 8.2 83 12.0 10.6 113
Willow Creek Pass 9520 2.0 5.0 40 4.0 5.6 71
Zirkel 9320 7.9 7.8 101 11.5 11.0 105
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Basin Index (%) 70 89
SWEETWATER
Deer Park 9690 5.8 5.0 116 7.4 6.7 110
Larsen Creek 8880 1.6 2.6 62 5.4 4.8 112
South Pass 9040 4.9 5.2 94 6.4 6.4 100
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Basin Index (%) 96 107
LOWER N. PLATTE
Casper Mtn. 7940 1.0 4.6 22 4.0 5.8 69
Laprele Creek 8370 1.8 2.8 64 5.5 4.7 117
Reno Hill 8410 1.3 5.0 26 4.9 5.6 88
Windy Peak 7890 .8 2.6 31 4.3 4.2 102
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Basin Index (%) 33 92
LARAMIE RIVER
Brooklyn Lake 10250 6.2 6.8 91 9.1 7.4 123
Cinnabar Park 9670 5.5 7.1 77 8.4 8.8 95
Crow Creek 8320 .3 3.2 9 3.0 4.3 70
Deadman Hill 10240 4.1 6.4 64 4.6 6.7 69
Rawah 9100 1.8 4.0 45 4.0 6.8 59
Roach 9710 3.3 5.5 60 5.6 7.4 76
Windy Peak 7890 .8 2.6 31 4.3 4.2 102
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Basin Index (%) 62 86
S. PLATTE
Crow Creek 8320 .3 3.2 9 3.0 4.3 70
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Basin Index (%) 9 70
LITTLE SNAKE RIVER
Battle Mountain 7460 1.7 3.3 52 6.2 5.8 107
Divide Peak 8700 3.6 6.4 56 6.8 8.6 79
Elk River 8710 3.9 5.3 74 8.1 7.0 116
Elkhead Divide 8780 3.4 -M * 7.4 -M *
Little Snake River 8930 6.6 7.6 87 12.0 12.4 97
Old Battle 9840 8.0 10.2 78 13.4 12.7 106
Sage Creek Basin 7830 2.2 4.2 52 4.7 5.5 85
Sandstone RS 8150 3.2 4.0 80 6.3 7.0 90
Whiskey Park 8950 6.8 8.2 83 12.0 10.6 113
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Basin Index (%) 73 100
UPPER GREEN RIVER
Big Sandy Opening 9100 4.2 4.6 91 4.8 4.8 100
Blind Bull Sum 8880 10.0 7.8 128 7.8 7.4 105
East Rim Divide 8010 3.0 3.6 83 5.9 4.4 134
Elkhart Park G.S. 9410 4.6 4.3 107 6.2 5.5 113
Gros Ventre Summit 8760 5.4 4.8 112 7.3 5.5 133
Gunsight Pass 9820 6.4 4.8 133 8.9 5.8 153
Indian Creek 9400 8.4 7.7 109 9.8 7.6 129
Kendall R.S. 7790 4.9 4.2 117 8.4 5.4 156
Larsen Creek 8880 1.6 2.6 62 5.4 4.8 112
Loomis Park 8240 5.3 5.1 104 8.0 6.4 125
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 4.1 93 7.0 5.3 132
Spring Creek Divide 9020 -M 7.8 * -M 8.6 *
Triple Peak 8520 10.3 7.6 136 13.3 9.1 146
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Basin Index (%) 111 131
LOWER GREEN RIVER
Blacks Fork Jct 8880 2.9 2.7 107 4.8 5.0 96
Buck Pasture 9630 4.7 -M * 6.7 -M *
EF Blacks Fork GS 9360 2.1 3.2 66 4.8 4.8 100
Hams Fork 7860 4.5 3.6 125 6.1 4.6 133
Henrys Fork 10180 -M -M * 5.4 -M *
Hewinta 9510 1.5 2.9 52 5.4 5.8 93
Hickerson Park 9120 .9 2.2 41 4.0 4.6 87
Hole-in-Rock 9170 1.0 2.3 43 4.7 4.4 107
Indian Creek 9400 8.4 7.7 109 9.8 7.6 129
Kelley R.S. 8240 5.0 4.6 109 8.9 6.2 144
Spirit Lk 10240 3.9 4.5 87 7.8 7.1 110
Steel Creek Park 10140 4.5 5.2 87 6.6 6.6 100
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Basin Index (%) 89 111
UPPER BEAR RIVER
Bear River RS 8510 1.3 2.7 48 4.2 5.0 84
Bug Lake 7980 3.7 5.2 71 8.6 6.8 126
Burts Miller Ranch 7900 1.0 2.1 48 4.6 3.3 139
Chalk Creek #1 9160 3.8 7.8 49 7.9 9.2 86
Giveout 6940 2.5 2.6 96 6.8 5.0 136
Hayden Fork 9170 2.7 4.4 61 7.1 7.8 91
Kelley R.S. 8240 5.0 4.6 109 8.9 6.2 144
Lily Lake 9130 2.5 4.4 57 4.8 6.5 74
Monte Cristo 8930 5.1 7.8 65 10.2 9.3 110
Salt River Summit 7630 4.9 3.8 129 7.8 5.7 137
Spring Creek Divide 9020 -M 7.8 * -M 8.6 *
Trial Lake 9970 6.2 6.4 97 7.3 8.1 90
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Basin Index (%) 75 107
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.
