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 MONDAY: JANUARY 2 , 2023
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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 7060 8.4 7.4 114 9.3 9.9 94
Blind Bull Sum 8650 11.0 9.6 115 7.7 8.5 91
Cottonwood Creek 7670 10.4 8.7 120 11.0 11.0 100
East Rim Divide 7930 5.2 4.6 113 5.3 5.4 98
Grand Targhee 9260 21.0 19.8 106 13.2 16.0 82
Granite Creek 6770 7.7 6.6 117 7.3 9.0 81
Grassy Lake 7265 14.5 12.3 118 17.8 16.4 109
Gros Ventre Summit 8750 6.5 6.3 103 6.1 6.3 97
Gunsight Pass 9820 6.4 6.0 107 6.3 6.8 93
Lewis Lake Divide 7850 -M 12.8 * -M 16.2 *
Loomis Park 8240 7.4 6.6 112 7.5 7.7 97
Phillips Bench 8200 13.5 11.0 123 13.8 12.6 110
Salt River Summit 7640 7.6 5.0 152 7.7 7.2 107
Snake River Station 6920 9.4 6.9 136 11.6 11.0 105
Somsen Ranch 6800 8.2 4.8 171 9.5 8.2 116
Spring Creek Divide 9000 11.6 10.3 113 11.8 10.5 112
Thumb Divide 7980 -M 6.4 * -M 8.6 *
Togwotee Pass 9580 11.1 11.3 98 11.0 11.6 95
Triple Peak 8500 12.1 8.8 138 12.3 10.9 113
Two Ocean Plateau 9240 16.5 13.7 120 13.0 13.2 98
Willow Creek 8080 14.8 11.2 132 15.3 15.0 102
Younts Peak 8350 8.2 7.0 117 7.4 7.2 103
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Basin Index (%) 119 100
MADISON HEADWATERS IN WYOMING
Black Bear 8170 21.0 16.6 127 21.2 18.4 115
Canyon 7870 7.6 -M * 9.3 -M *
Madison Plateau 7750 14.6 10.2 143 15.6 11.8 132
West Yellowstone 6700 8.1 4.6 176 10.7 7.4 145
Whiskey Creek 6800 10.1 6.4 158 13.3 9.6 139
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Basin Index (%) 142 129
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.2 10.4 88 8.3 9.5 87
Canyon 7870 7.6 -M * 9.3 -M *
Evening Star 9200 13.1 13.0 101 15.2 14.5 105
Fisher Creek 9100 17.7 15.8 112 18.6 16.2 115
Monument Peak 8850 10.5 9.1 115 12.8 10.9 117
Northeast Entrance 7350 4.8 4.2 114 7.1 6.6 108
Parker Peak 9400 11.7 10.7 109 11.4 10.2 112
Sylvan Lake 8420 9.4 9.0 104 12.0 12.0 100
Thumb Divide 7980 -M 6.4 * -M 8.6 *
Two Ocean Plateau 9240 16.5 13.7 120 13.0 13.2 98
White Mill 8700 12.5 10.8 116 12.3 11.4 108
Wolverine 7650 6.2 5.4 115 6.7 6.3 106
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Basin Index (%) 109 106
WIND RIVER
Burroughs Creek 8750 5.5 -M * 6.2 -M *
Castle Creek 8400 3.2 3.3 97 3.9 4.4 89
Cold Springs 9630 4.5 3.8 118 5.6 5.0 112
Deer Park 9700 12.5 6.0 208 12.7 8.4 151
Hobbs Park 10100 8.6 6.4 134 8.0 6.2 129
Kirwin 9550 4.8 5.6 86 6.4 6.2 103
Little Warm 9370 5.3 4.6 115 6.1 6.1 100
South Pass 9040 9.6 6.0 160 8.4 7.0 120
St. Lawrence Alt 8620 3.7 -M * 5.4 -M *
Togwotee Pass 9580 11.1 11.3 98 11.0 11.6 95
Townsend Creek 8700 5.6 4.2 133 6.4 5.7 112
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Basin Index (%) 127 113
BIGHORN BASIN
Bald Mtn. 9380 8.5 8.8 97 7.2 8.0 90
Bear Trap Meadow 8200 4.0 2.9 138 4.7 4.3 109
Bone Springs Div 9350 5.6 7.6 74 5.7 7.3 78
Grave Springs 8550 4.9 3.4 144 5.3 4.6 115
Kirwin 9550 4.8 5.6 86 6.4 6.2 103
Marquette 8760 3.4 3.4 100 4.2 4.8 88
Middle Powder 7760 5.9 4.4 134 5.2 5.0 104
Owl Creek 8975 3.8 2.7 141 4.4 3.4 129
Powder River Pass 9480 4.8 5.2 92 6.3 6.3 100
Shell Creek 9580 5.8 7.4 78 6.5 6.8 96
Timber Creek 7950 2.5 2.4 104 2.9 4.2 69
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Basin Index (%) 100 97
SHOSHONE RIVER
Blackwater 9780 10.8 11.4 95 10.7 11.0 97
Evening Star 9200 13.1 13.0 101 15.2 14.5 105
Marquette 8760 3.4 3.4 100 4.2 4.8 88
Sylvan Lake 8420 9.4 9.0 104 12.0 12.0 100
Sylvan Road 7120 5.4 5.8 93 7.9 9.2 86
Younts Peak 8350 8.2 7.0 117 7.4 7.2 103
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Basin Index (%) 101 98
POWDER RIVER
Bear Trap Meadow 8200 4.0 2.9 138 4.7 4.3 109
Cloud Peak Reservoir 9860 6.6 6.5 102 6.8 6.5 105
Grave Springs 8550 4.9 3.4 144 5.3 4.6 115
Hansen Sawmill 8360 3.6 3.1 116 4.0 4.2 95
Middle Powder 7760 5.9 4.4 134 5.2 5.0 104
Powder River Pass 9480 4.8 5.2 92 6.3 6.3 100
Soldier Park 8720 2.0 2.5 80 3.4 4.6 74
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Basin Index (%) 114 101
TONGUE RIVER
Big Goose 7990 4.3 3.6 119 5.1 5.1 100
Bone Springs Div 9350 5.6 7.6 74 5.7 7.3 78
Burgess Junction 7880 5.8 4.8 121 7.3 5.8 126
Dome Lake 8880 3.8 4.9 78 5.6 6.0 93
Little Goose 8870 4.7 4.6 102 5.6 5.8 97
Sucker Creek 8880 6.0 5.3 113 8.0 6.2 129
Tie Creek 6870 3.4 2.1 162 6.1 5.3 115
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Basin Index (%) 102 105
BELLE FOURCHE
Blind Park 6890 3.4 3.2 106 5.0 5.0 100
Cole Canyon 5910 2.7 2.6 104 3.9 4.2 93
North Rapid Creek 6130 3.5 3.2 109 4.1 3.8 108
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Basin Index (%) 107 100
CHEYENNE RIVER BASIN
Blind Park 6890 3.4 3.2 106 5.0 5.0 100
North Rapid Creek 6130 3.5 3.2 109 4.1 3.8 108
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Basin Index (%) 108 103
UPPER N. PLATTE
Arapaho Ridge 10976 11.5 10.1 114 11.7 10.4 112
Blackhall Mtn 9839 15.0 12.7 118 16.0 13.8 116
Cinnabar Park 9707 -M 9.2 * 10.5 11.2 94
Columbine 9167 11.6 9.0 129 12.1 10.7 113
Divide Peak 8730 10.1 7.6 133 12.0 10.0 120
Joe Wright 10158 11.1 8.6 129 13.8 11.6 119
Laprele Creek 8390 4.3 3.7 116 4.5 5.4 83
Med Bow 10512 15.8 -M * 15.4 -M *
Never Summer 10323 -M 8.4 * -M 8.2 *
North French Creek 10153 12.4 11.8 105 12.5 12.0 104
Old Battle 9860 15.7 12.6 125 17.6 14.8 119
Rawah 9069 8.2 4.9 167 9.1 7.7 118
Sage Creek Basin 7850 9.0 5.8 155 10.0 6.8 147
Sand Lake 10098 -M 11.5 * -M 11.0 *
South Brush Creek 8495 -M 4.8 * -M 6.2 *
Tower 10620 21.3 16.8 127 21.2 17.5 121
Webber Springs 9260 11.7 9.2 127 12.8 11.8 108
Whiskey Park 9020 -M 10.0 * -M 12.6 *
Willow Creek Pass 9523 8.0 5.8 138 8.8 6.6 133
Zirkel 9338 12.3 10.7 115 14.7 14.0 105
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Basin Index (%) 125 114
SWEETWATER
Deer Park 9700 12.5 6.0 208 12.7 8.4 151
Larsen Creek 9000 4.5 2.9 155 6.9 5.8 119
South Pass 9040 9.6 6.0 160 8.4 7.0 120
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Basin Index (%) 179 132
LOWER N. PLATTE
Casper Mtn. 7920 5.2 5.4 96 5.1 6.6 77
Laprele Creek 8390 4.3 3.7 116 4.5 5.4 83
Reno Hill 8430 -M 5.9 * -M 6.6 *
Windy Peak 7915 3.4 3.0 113 4.2 4.7 89
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Basin Index (%) 107 83
LARAMIE RIVER
Brooklyn Lake 10250 10.2 8.6 119 11.2 9.0 124
Cinnabar Park 9707 -M 9.2 * 10.5 11.2 94
Crow Creek 8335 1.9 3.9 49 3.9 5.5 71
Deadman Hill 10239 -M 7.8 * -M 8.1 *
Rawah 9069 8.2 4.9 167 9.1 7.7 118
Roach 9740 8.5 6.7 127 9.8 9.0 109
Windy Peak 7915 3.4 3.0 113 4.2 4.7 89
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Basin Index (%) 119 103
S. PLATTE
Crow Creek 8335 1.9 3.9 49 3.9 5.5 71
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Basin Index (%) 49 71
LITTLE SNAKE RIVER
Battle Mountain 7498 -M 4.3 * -M 7.0 *
Divide Peak 8730 10.1 7.6 133 12.0 10.0 120
Elk River 8739 -M 6.9 * -M 8.6 *
Elkhead Divide 8800 13.5 -M * 14.0 -M *
Little Snake River 8928 14.8 10.5 141 18.8 15.5 121
Old Battle 9860 15.7 12.6 125 17.6 14.8 119
Sage Creek Basin 7850 9.0 5.8 155 10.0 6.8 147
Sandstone RS 8152 10.2 5.0 204 11.8 8.0 148
Whiskey Park 9020 -M 10.0 * -M 12.6 *
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Basin Index (%) 144 127
UPPER GREEN RIVER
Big Sandy Opening 9080 7.2 6.1 118 7.1 6.1 116
Blind Bull Sum 8650 11.0 9.6 115 7.7 8.5 91
East Rim Divide 7930 5.2 4.6 113 5.3 5.4 98
Elkhart Park G.S. 9400 5.9 5.8 102 5.4 6.4 84
Gros Ventre Summit 8750 6.5 6.3 103 6.1 6.3 97
Gunsight Pass 9820 6.4 6.0 107 6.3 6.8 93
Indian Creek 9425 12.3 10.0 123 10.4 9.3 112
Kendall R.S. 7740 5.7 5.2 110 6.0 6.8 88
Larsen Creek 9000 4.5 2.9 155 6.9 5.8 119
Loomis Park 8240 7.4 6.6 112 7.5 7.7 97
New Fork Lake 8340 5.4 4.8 112 -M 5.3 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.1 5.1 120 7.3 6.5 112
Spring Creek Divide 9000 11.6 10.3 113 11.8 10.5 112
Triple Peak 8500 12.1 8.8 138 12.3 10.9 113
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Basin Index (%) 117 103
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.0 3.4 206 7.1 5.8 122
Buck Pasture 9632 9.3 -M * 10.5 -M *
EF Blacks Fork GS 9360 8.4 4.0 210 6.0 5.2 115
Hams Fork 7840 6.4 4.6 139 6.0 5.2 115
Henrys Fork 10182 -M -M * 7.2 -M *
Hewinta 9500 5.7 4.0 142 7.8 6.6 118
Hickerson Park 9122 4.8 3.0 160 5.7 4.9 116
Hole-in-Rock 9168 3.8 3.0 127 5.5 5.0 110
Indian Creek 9425 12.3 10.0 123 10.4 9.3 112
Kelley R.S. 8180 8.9 6.2 144 9.1 8.0 114
Spirit Lk 10235 9.2 5.2 177 9.1 7.9 115
Steel Creek Park 10158 9.6 6.2 155 9.6 7.4 130
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Basin Index (%) 153 117
UPPER BEAR RIVER
Bear River RS 8777 6.4 3.8 168 7.5 5.6 134
Bug Lake 7987 11.8 6.5 182 10.0 8.1 123
Burts Miller Ranch 8000 5.3 2.3 230 7.9 3.7 214
Chalk Creek #1 9171 13.2 9.2 143 13.8 10.3 134
Giveout 6930 5.5 3.4 162 6.7 5.8 116
Hayden Fork 9130 8.4 5.6 150 11.7 9.2 127
Kelley R.S. 8180 8.9 6.2 144 9.1 8.0 114
Lily Lake 9133 8.1 5.0 162 8.1 7.2 112
Monte Cristo 8932 16.3 9.8 166 16.1 11.4 141
Salt River Summit 7640 7.6 5.0 152 7.7 7.2 107
Spring Creek Divide 9000 11.6 10.3 113 11.8 10.5 112
Trial Lake 9992 14.3 8.4 170 14.8 9.9 149
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Basin Index (%) 155 129
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-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.
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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.
