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 THURSDAY: DECEMBER 18 , 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 3.7 5.5 67 9.3 8.6 108
Blind Bull Sum 8880 7.7 7.7 100 6.3 7.2 88
Cottonwood Creek 7710 7.2 6.9 104 12.2 8.8 139
East Rim Divide 8010 2.0 3.3 61 5.0 4.3 116
Grand Targhee 9260 12.3 16.3 75 13.2 13.4 99
Granite Creek 6770 3.3 4.7 70 8.4 7.2 117
Grassy Lake 7330 6.0 9.7 62 11.3 12.2 93
Gros Ventre Summit 8760 4.1 4.8 85 6.2 5.2 119
Gunsight Pass 9820 5.4 4.7 115 8.0 5.8 138
Lewis Lake Divide 7880 8.4 9.7 87 14.6 12.2 120
Loomis Park 8240 3.7 5.0 74 6.5 6.2 105
Phillips Bench 8170 6.1 8.2 74 10.2 9.6 106
Salt River Summit 7630 4.0 3.7 108 6.9 5.6 123
Snake River Station 6900 3.5 5.2 67 8.8 9.0 98
Somsen Ranch 6830 2.2 3.4 65 7.2 6.2 116
Spring Creek Divide 9020 7.5 7.6 99 10.3 8.2 126
Thumb Divide 7970 3.5 4.8 73 7.0 7.2 97
Togwotee Pass 9590 8.5 9.1 93 12.8 9.4 136
Triple Peak 8520 8.3 7.0 119 11.3 8.6 131
Two Ocean Plateau 9240 10.5 11.0 95 11.4 10.4 110
Willow Creek 8060 7.2 8.7 83 13.6 12.4 110
Younts Peak 8340 3.7 5.3 70 10.2 6.0 170
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Basin Index (%) 85 115
MADISON HEADWATERS IN WYOMING
Black Bear 8160 7.8 13.0 60 11.4 13.8 83
Canyon 7870 2.4 4.4 55 6.1 6.0 102
Madison Plateau 7710 3.7 7.4 50 8.5 9.7 88
West Yellowstone 6680 1.5 3.4 44 5.3 5.8 91
Whiskey Creek 6790 2.7 4.4 61 7.4 7.6 97
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Basin Index (%) 56 90
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 8.8 8.2 107 10.3 7.8 132
Canyon 7870 2.4 4.4 55 6.1 6.0 102
Evening Star 9030 11.8 9.4 126 16.9 11.8 143
Fisher Creek 9110 12.8 12.0 107 15.4 12.2 126
Monument Peak 8740 8.6 7.3 118 11.8 8.6 137
Northeast Entrance 7420 2.8 2.8 100 7.9 5.4 146
Parker Peak 9420 8.9 8.2 109 10.6 8.2 129
Sylvan Lake 8440 5.0 7.2 69 10.7 9.8 109
Thumb Divide 7970 3.5 4.8 73 7.0 7.2 97
Two Ocean Plateau 9240 10.5 11.0 95 11.4 10.4 110
White Mill 8730 10.6 8.8 120 11.9 8.8 135
Wolverine 7660 2.9 4.1 71 8.0 5.3 151
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Basin Index (%) 100 126
WIND RIVER
Burroughs Creek 8760 2.9 -M * 8.5 -M *
Castle Creek 8410 1.4 2.6 54 3.7 4.0 92
Cold Springs 9640 1.9 3.1 61 6.0 4.0 150
Deer Park 9690 4.4 5.1 86 5.7 6.6 86
Hobbs Park 10080 3.0 5.3 57 4.8 5.0 96
Kirwin 9580 4.2 4.7 89 8.1 5.2 156
Little Warm 9370 3.9 3.6 108 6.7 5.2 129
South Pass 9040 3.7 5.2 71 5.1 6.4 80
St. Lawrence Alt 8610 .4 -M * 3.0 -M *
Togwotee Pass 9590 8.5 9.1 93 12.8 9.4 136
Townsend Creek 8720 .9 3.2 28 3.8 5.0 76
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Basin Index (%) 76 112
BIGHORN BASIN
Bald Mtn. 9360 7.8 7.2 108 9.3 6.4 145
Bear Trap Meadow 8200 1.4 2.3 61 5.4 3.8 142
Bone Springs Div 9340 5.4 6.3 86 6.6 6.0 110
Grave Springs 8560 1.4 2.6 54 5.2 3.8 137
Kirwin 9580 4.2 4.7 89 8.1 5.2 156
Marquette 8800 .2 3.2 6 3.3 4.2 79
Middle Powder 7760 1.9 3.4 56 6.0 4.4 136
Owl Creek 8990 .4 2.2 18 2.8 2.9 97
Powder River Pass 9480 5.6 4.3 130 9.3 5.3 175
Shell Creek 9570 6.1 6.2 98 8.3 5.6 148
Timber Creek 7910 .0 1.9 0 2.2 3.8 58
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Basin Index (%) 78 129
SHOSHONE RIVER
Blackwater 9830 8.6 9.2 93 10.5 8.8 119
Evening Star 9030 11.8 9.4 126 16.9 11.8 143
Marquette 8800 .2 3.2 6 3.3 4.2 79
Sylvan Lake 8440 5.0 7.2 69 10.7 9.8 109
Sylvan Road 7140 2.9 4.5 64 8.7 7.6 114
Younts Peak 8340 3.7 5.3 70 10.2 6.0 170
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Basin Index (%) 83 125
POWDER RIVER
Bear Trap Meadow 8200 1.4 2.3 61 5.4 3.8 142
Cloud Peak Reservoir 9830 4.8 5.2 92 6.6 5.6 118
Grave Springs 8560 1.4 2.6 54 5.2 3.8 137
Hansen Sawmill 8360 1.4 2.5 56 6.5 3.8 171
Middle Powder 7760 1.9 3.4 56 6.0 4.4 136
Powder River Pass 9480 5.6 4.3 130 9.3 5.3 175
Soldier Park 8680 1.0 2.0 50 4.3 3.9 110
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Basin Index (%) 78 142
TONGUE RIVER
Big Goose 8010 1.2 2.8 43 4.7 4.3 109
Bone Springs Div 9340 5.4 6.3 86 6.6 6.0 110
Burgess Junction 7910 2.1 3.5 60 5.3 4.9 108
Dome Lake 8890 2.0 3.8 53 6.0 5.2 115
Little Goose 8560 1.6 3.3 48 5.2 5.2 100
Sucker Creek 8840 2.6 4.4 59 6.2 5.4 115
Tie Creek 7050 .6 1.4 43 4.6 4.6 100
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Basin Index (%) 61 108
BELLE FOURCHE
Blind Park 6900 2.2 2.4 92 7.4 4.4 168
Cole Canyon 5930 1.6 1.6 100 6.7 3.5 191
North Rapid Creek 6150 1.3 2.4 54 5.4 3.3 164
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Basin Index (%) 80 174
CHEYENNE RIVER BASIN
Blind Park 6900 2.2 2.4 92 7.4 4.4 168
North Rapid Creek 6150 1.3 2.4 54 5.4 3.3 164
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Basin Index (%) 73 166
UPPER N. PLATTE
Arapaho Ridge 10960 5.1 8.2 62 6.8 8.7 78
Blackhall Mtn 9830 6.2 9.8 63 9.1 11.6 78
Cinnabar Park 9670 5.5 6.9 80 8.3 8.7 95
Columbine 9170 6.0 6.3 95 8.0 8.8 91
Divide Peak 8700 3.4 6.0 57 6.6 8.0 82
Joe Wright 10140 3.5 7.0 50 8.0 9.8 82
Laprele Creek 8370 1.8 2.8 64 5.4 4.6 117
Med Bow 10500 11.8 -M * 13.7 -M *
Never Summer 10300 4.7 6.9 68 3.5 6.8 51
North French Creek 10150 9.3 9.2 101 11.3 9.4 120
Old Battle 9840 8.0 10.0 80 13.1 12.4 106
Rawah 9100 1.6 3.9 41 4.0 6.8 59
Sage Creek Basin 7830 2.2 4.1 54 4.7 5.4 87
Sand Lake 10080 6.8 9.2 74 8.7 9.2 95
South Brush Creek 8480 2.4 3.6 67 4.7 5.4 87
Tower 10610 8.9 13.8 64 11.4 15.0 76
Webber Springs 9250 5.7 7.4 77 8.8 9.8 90
Whiskey Park 8950 6.8 7.8 87 11.9 10.2 117
Willow Creek Pass 9520 2.0 5.0 40 4.0 5.5 73
Zirkel 9320 7.7 7.7 100 11.4 11.0 104
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Basin Index (%) 72 90
SWEETWATER
Deer Park 9690 4.4 5.1 86 5.7 6.6 86
Larsen Creek 8880 1.2 2.4 50 4.8 4.6 104
South Pass 9040 3.7 5.2 71 5.1 6.4 80
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Basin Index (%) 73 89
LOWER N. PLATTE
Casper Mtn. 7940 1.0 4.3 23 4.1 5.8 71
Laprele Creek 8370 1.8 2.8 64 5.4 4.6 117
Reno Hill 8410 1.0 4.9 20 4.6 5.4 85
Windy Peak 7890 .8 2.5 32 4.2 4.1 102
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Basin Index (%) 32 92
LARAMIE RIVER
Brooklyn Lake 10250 5.8 6.7 87 8.8 7.1 124
Cinnabar Park 9670 5.5 6.9 80 8.3 8.7 95
Crow Creek 8320 .3 3.2 9 2.9 4.3 67
Deadman Hill 10240 -M 6.2 * 4.5 6.6 68
Rawah 9100 1.6 3.9 41 4.0 6.8 59
Roach 9710 3.2 5.3 60 5.5 7.2 76
Windy Peak 7890 .8 2.5 32 4.2 4.1 102
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Basin Index (%) 60 85
S. PLATTE
Crow Creek 8320 .3 3.2 9 2.9 4.3 67
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Basin Index (%) 9 67
LITTLE SNAKE RIVER
Battle Mountain 7460 1.5 3.2 47 6.2 5.7 109
Divide Peak 8700 3.4 6.0 57 6.6 8.0 82
Elk River 8710 4.1 4.9 84 8.0 6.8 118
Elkhead Divide 8780 3.2 -M * 7.4 -M *
Little Snake River 8930 6.7 7.4 91 11.9 12.2 98
Old Battle 9840 8.0 10.0 80 13.1 12.4 106
Sage Creek Basin 7830 2.2 4.1 54 4.7 5.4 87
Sandstone RS 8150 3.2 3.8 84 6.1 6.7 91
Whiskey Park 8950 6.8 7.8 87 11.9 10.2 117
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Basin Index (%) 76 102
UPPER GREEN RIVER
Big Sandy Opening 9100 3.7 4.5 82 4.3 4.6 93
Blind Bull Sum 8880 7.7 7.7 100 6.3 7.2 88
East Rim Divide 8010 2.0 3.3 61 5.0 4.3 116
Elkhart Park G.S. 9410 3.6 4.3 84 5.3 5.4 98
Gros Ventre Summit 8760 4.1 4.8 85 6.2 5.2 119
Gunsight Pass 9820 5.4 4.7 115 8.0 5.8 138
Indian Creek 9400 6.9 7.6 91 8.6 7.4 116
Kendall R.S. 7790 2.9 3.9 74 6.7 5.4 124
Larsen Creek 8880 1.2 2.4 50 4.8 4.6 104
Loomis Park 8240 3.7 5.0 74 6.5 6.2 105
New Fork Lake 8380 3.1 3.6 86 5.9 4.3 137
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 2.8 4.0 70 5.9 5.1 116
Spring Creek Divide 9020 7.5 7.6 99 10.3 8.2 126
Triple Peak 8520 8.3 7.0 119 11.3 8.6 131
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Basin Index (%) 89 116
LOWER GREEN RIVER
Blacks Fork Jct 8880 2.4 2.6 92 4.4 5.0 88
Buck Pasture 9630 4.0 -M * 6.2 -M *
EF Blacks Fork GS 9360 2.0 3.1 65 4.7 4.7 100
Hams Fork 7860 3.3 3.5 94 5.6 4.4 127
Henrys Fork 10180 -M -M * 5.3 -M *
Hewinta 9510 1.2 2.9 41 5.0 5.6 89
Hickerson Park 9120 1.6 2.2 73 4.2 4.5 93
Hole-in-Rock 9170 1.1 2.2 50 4.6 4.2 110
Indian Creek 9400 6.9 7.6 91 8.6 7.4 116
Kelley R.S. 8240 3.7 4.6 80 7.7 6.0 128
Spirit Lk 10240 3.7 4.2 88 7.7 6.8 113
Steel Creek Park 10140 4.1 5.0 82 6.2 6.4 97
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Basin Index (%) 79 107
UPPER BEAR RIVER
Bear River RS 8510 .9 2.6 35 4.0 4.8 83
Bug Lake 7980 2.7 5.2 52 7.8 6.7 116
Burts Miller Ranch 7900 .6 2.2 27 4.1 3.3 124
Chalk Creek #1 9160 3.0 7.6 39 7.3 8.8 83
Giveout 6940 1.4 2.6 54 6.0 4.8 125
Hayden Fork 9170 1.8 4.1 44 6.4 7.5 85
Kelley R.S. 8240 3.7 4.6 80 7.7 6.0 128
Lily Lake 9130 2.0 4.3 47 4.4 6.4 69
Monte Cristo 8930 4.2 7.4 57 9.3 8.8 106
Salt River Summit 7630 4.0 3.7 108 6.9 5.6 123
Spring Creek Divide 9020 7.5 7.6 99 10.3 8.2 126
Trial Lake 9970 5.4 6.0 90 6.5 7.7 84
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Basin Index (%) 64 103
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-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.
