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: MAY 16 , 2024
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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 1.8 1.2 150* 23.9 24.2 99
Blind Bull Sum 8650 26.9 23.2 116 19.8 20.6 96
Cottonwood Creek 7670 10.4 10.2 102 31.4 30.0 105
East Rim Divide 7930 -M .0 * 13.5 13.8 98
Grand Targhee 9260 41.7 44.6 93 36.7 37.4 98
Granite Creek 6770 1.3 1.9 68 19.8 22.0 90
Grassy Lake 7265 17.3 19.8 87 38.4 40.3 95
Gros Ventre Summit 8750 6.0 8.2 73 -M 15.2 *
Gunsight Pass 9820 10.8 11.6 93 18.1 17.4 104
Lewis Lake Divide 7850 20.7 24.2 86 39.2 39.2 100
Loomis Park 8240 2.3 5.3 43 18.1 20.3 89
Phillips Bench 8200 22.8 21.5 106 33.8 30.7 110
Salt River Summit 7640 .5 .0 * 16.9 18.9 89
Snake River Station 6920 .0 .0 * 25.3 26.4 96
Somsen Ranch 6800 -M .0 * 24.0 19.6 122
Spring Creek Divide 9000 23.2 22.6 103 26.1 27.4 95
Thumb Divide 7980 6.6 4.8 138 20.8 22.2 94
Togwotee Pass 9580 20.8 23.7 88 25.1 28.9 87
Triple Peak 8500 15.0 13.4 112 29.9 30.0 100
Two Ocean Plateau 9240 29.2 31.5 93 30.9 31.2 99
Willow Creek 8080 22.1 19.1 116 40.4 40.0 101
Younts Peak 8350 3.2 9.5 34 18.3 18.1 101
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Basin Index (%) 95 99
MADISON HEADWATERS IN WYOMING
Black Bear 8170 30.3 37.4 81 41.9 42.2 99
Canyon 7870 4.7 -M * 15.8 -M *
Madison Plateau 7750 14.3 17.8 80 25.9 30.6 85
West Yellowstone 6700 -M .0 * 15.0 16.4 91
Whiskey Creek 6800 5.4 7.8 69 21.7 24.2 90
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Basin Index (%) 79 92
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 19.6 24.0 82 20.9 24.8 84
Canyon 7870 4.7 -M * 15.8 -M *
Evening Star 9200 18.5 25.2 73 30.9 33.7 92
Fisher Creek 9100 23.9 36.6 65 32.0 40.8 78
Monument Peak 8850 15.1 19.6 77 24.2 27.0 90
Northeast Entrance 7350 .0 .0 * 14.2 16.0 89
Parker Peak 9400 21.5 21.4 100 27.2 23.8 114
Sylvan Lake 8420 10.3 14.8 70 27.4 27.9 98
Thumb Divide 7980 6.6 4.8 138 20.8 22.2 94
Two Ocean Plateau 9240 29.2 31.5 93 30.9 31.2 99
White Mill 8700 17.6 24.9 71 22.3 27.2 82
Wolverine 7650 .0 .0 * 15.9 15.2 105
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Basin Index (%) 80 92
WIND RIVER
Burroughs Creek 8750 1.8 -M * 13.9 -M *
Castle Creek 8400 .0 .0 * 10.2 11.6 88
Cold Springs 9630 .3 .0 * 14.9 13.4 111
Deer Park 9700 19.3 12.6 153 26.9 23.4 115
Hobbs Park 10100 21.7 16.4 132 24.2 18.8 129
Kirwin 9550 12.2 10.6 115 20.0 16.2 123
Little Warm 9370 6.7 5.7 118 17.6 15.0 117
South Pass 9040 14.7 10.8 136 23.5 19.6 120
St. Lawrence Alt 8620 -M -M * 14.8 -M *
Togwotee Pass 9580 20.8 23.7 88 25.1 28.9 87
Townsend Creek 8700 9.1 1.9 479 19.7 15.6 126
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Basin Index (%) 128 112
BIGHORN BASIN
Bald Mtn. 9380 19.5 19.8 98 18.8 20.3 93
Bear Trap Meadow 8200 -M .0 * 13.4 12.6 106
Bone Springs Div 9350 17.4 16.0 109 16.9 19.3 88
Grave Springs 8550 4.6 4.6 100 14.5 13.1 111
Kirwin 9550 12.2 10.6 115 20.0 16.2 123
Marquette 8760 15.8 5.6 282 22.9 14.9 154
Middle Powder 7760 11.0 6.6 167 15.4 13.5 114
Owl Creek 8975 -M .0 * 12.3 9.5 129
Powder River Pass 9480 5.1 8.0 64 16.5 17.0 97
Shell Creek 9580 16.8 15.6 108 18.9 17.4 109
Timber Creek 7950 .9 .0 * 17.1 12.0 142
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Basin Index (%) 119 113
SHOSHONE RIVER
Blackwater 9780 24.2 23.0 105 28.4 27.5 103
Evening Star 9200 18.5 25.2 73 30.9 33.7 92
Marquette 8760 15.8 5.6 282 22.9 14.9 154
Sylvan Lake 8420 10.3 14.8 70 27.4 27.9 98
Sylvan Road 7120 -M .0 * 17.5 19.2 91
Younts Peak 8350 3.2 9.5 34 18.3 18.1 101
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Basin Index (%) 92 103
POWDER RIVER
Bear Trap Meadow 8200 -M .0 * 13.4 12.6 106
Cloud Peak Reservoir 9860 17.2 14.7 117 22.3 19.4 115
Grave Springs 8550 4.6 4.6 100 14.5 13.1 111
Hansen Sawmill 8360 -M .0 * 14.1 12.8 110
Middle Powder 7760 11.0 6.6 167 15.4 13.5 114
Powder River Pass 9480 5.1 8.0 64 16.5 17.0 97
Soldier Park 8720 .3 .0 * 14.4 12.4 116
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Basin Index (%) 113 110
TONGUE RIVER
Big Goose 7990 7.1 6.6 108 17.4 15.8 110
Bone Springs Div 9350 17.4 16.0 109 16.9 19.3 88
Burgess Junction 7880 9.0 9.0 100 17.6 16.4 107
Dome Lake 8880 -M 8.7 * 18.8 18.9 99
Little Goose 8870 11.0 8.5 129 20.5 17.2 119
Sucker Creek 8880 10.9 9.6 114 22.1 19.6 113
Tie Creek 6870 .0 .0 * 17.2 16.0 108
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Basin Index (%) 111 106
BELLE FOURCHE
Blind Park 6890 .1 .0 * 12.5 14.6 86
Cole Canyon 5910 .0 .0 * 13.5 13.9 97
North Rapid Creek 6130 -M .0 * 12.7 12.5 102
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Basin Index (%) * 94
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 12.5 14.6 86
North Rapid Creek 6130 -M .0 * 12.7 12.5 102
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Basin Index (%) * 93
UPPER N. PLATTE
Arapaho Ridge 10976 23.3 20.2 115 27.4 28.2 97
Blackhall Mtn 9839 35.5 28.5 125 41.8 39.0 107
Cinnabar Park 9707 16.4 14.8 111 27.7 27.9 99
Columbine 9167 -M 6.1 * -M 30.8 *
Divide Peak 8730 12.2 9.1 134 29.6 25.6 116
Joe Wright 10158 22.9 20.5 112 32.0 32.8 98
Laprele Creek 8390 2.5 .0 * 17.3 16.4 105
Med Bow 10512 43.6 -M * 40.4 -M *
Never Summer 10323 24.9 20.8 120 20.8 21.9 95
North French Creek 10153 29.4 31.2 94 34.1 35.2 97
Old Battle 9860 35.8 35.1 102 40.5 41.6 97
Rawah 9069 6.8 .3 2267* 21.2 20.2 105
Sage Creek Basin 7850 -M .0 * 19.1 16.4 116
Sand Lake 10098 36.7 30.2 122 37.0 31.6 117
South Brush Creek 8495 .2 .0 * 16.3 18.8 87
Tower 10620 46.2 46.6 99 48.5 48.4 100
Webber Springs 9260 19.7 13.8 143 31.0 32.0 97
Whiskey Park 9020 29.8 23.8 125 35.4 35.2 101
Willow Creek Pass 9523 14.0 12.0 117 18.8 17.3 109
Zirkel 9338 12.6 13.2 95 34.9 35.6 98
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Basin Index (%) 115 102
SWEETWATER
Deer Park 9700 19.3 12.6 153 26.9 23.4 115
Larsen Creek 9000 -M .0 * 16.8 16.5 102
South Pass 9040 14.7 10.8 136 23.5 19.6 120
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Basin Index (%) 145 113
LOWER N. PLATTE
Casper Mtn. 7920 9.3 4.9 190 22.1 18.6 119
Laprele Creek 8390 2.5 .0 * 17.3 16.4 105
Reno Hill 8430 10.9 8.2 133 22.2 21.3 104
Windy Peak 7915 1.7 .0 * 15.2 14.3 106
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Basin Index (%) 186 109
LARAMIE RIVER
Brooklyn Lake 10250 22.3 19.0 117 31.4 27.3 115
Cinnabar Park 9707 16.4 14.8 111 27.7 27.9 99
Crow Creek 8335 .0 .0 * 13.0 14.0 93
Deadman Hill 10239 22.2 17.2 129 23.9 23.6 101
Rawah 9069 6.8 .3 2267* 21.2 20.2 105
Roach 9740 11.5 12.3 93 22.0 23.6 93
Windy Peak 7915 1.7 .0 * 15.2 14.3 106
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Basin Index (%) 127 102
S. PLATTE
Crow Creek 8335 .0 .0 * 13.0 14.0 93
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Basin Index (%) * 93
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 22.2 18.6 119
Divide Peak 8730 12.2 9.1 134 29.6 25.6 116
Elk River 8739 2.5 1.3 192* 23.6 23.6 100
Elkhead Divide 8800 12.0 -M * 28.0 -M *
Little Snake River 8928 21.0 15.6 135 39.7 39.4 101
Old Battle 9860 35.8 35.1 102 40.5 41.6 97
Sage Creek Basin 7850 -M .0 * 19.1 16.4 116
Sandstone RS 8152 .3 .0 * 22.1 21.5 103
Whiskey Park 9020 29.8 23.8 125 35.4 35.2 101
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Basin Index (%) 120 105
UPPER GREEN RIVER
Big Sandy Opening 9080 7.2 7.8 92 17.5 16.0 109
Blind Bull Sum 8650 26.9 23.2 116 19.8 20.6 96
East Rim Divide 7930 -M .0 * 13.5 13.8 98
Elkhart Park G.S. 9400 4.8 8.4 57 14.4 15.8 91
Gros Ventre Summit 8750 6.0 8.2 73 -M 15.2 *
Gunsight Pass 9820 10.8 11.6 93 18.1 17.4 104
Indian Creek 9425 21.0 21.2 99 24.2 23.6 103
Kendall R.S. 7740 .0 .0 * 15.5 15.8 98
Larsen Creek 9000 -M .0 * 16.8 16.5 102
Loomis Park 8240 2.3 5.3 43 18.1 20.3 89
New Fork Lake 8340 -M .2 * -M 13.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 16.3 16.1 101
Spring Creek Divide 9000 23.2 22.6 103 26.1 27.4 95
Triple Peak 8500 15.0 13.4 112 29.9 30.0 100
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Basin Index (%) 96 99
LOWER GREEN RIVER
Blacks Fork Jct 8869 .8 .0 * 17.3 15.1 115
Buck Pasture 9632 10.4 -M * 21.3 -M *
EF Blacks Fork GS 9360 2.7 .2 1350* 14.0 14.8 95
Hams Fork 7840 -M .0 * 13.9 14.0 99
Henrys Fork 10182 -M -M * 17.9 -M *
Hewinta 9500 3.0 .0 * 18.7 17.1 109
Hickerson Park 9122 -M .0 * 16.5 13.1 126
Hole-in-Rock 9168 -M .0 * 14.2 13.2 108
Indian Creek 9425 21.0 21.2 99 24.2 23.6 103
Kelley R.S. 8180 6.8 4.2 162 21.0 19.8 106
Spirit Lk 10235 10.1 5.8 174 23.1 20.1 115
Steel Creek Park 10158 17.3 15.6 111 22.7 20.8 109
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Basin Index (%) 131* 108
UPPER BEAR RIVER
Bear River RS 8777 -M .0 * 17.3 14.4 120
Bug Lake 7987 9.8 9.8 100 26.3 20.2 130
Burts Miller Ranch 8000 .1 .0 * 14.4 9.0 160
Chalk Creek #1 9171 17.7 16.7 106 29.8 28.0 106
Giveout 6930 -M .0 * 15.2 15.0 101
Hayden Fork 9130 2.4 .8 300* 27.8 24.8 112
Kelley R.S. 8180 6.8 4.2 162 21.0 19.8 106
Lily Lake 9133 6.7 .7 957* 19.3 20.1 96
Monte Cristo 8932 25.1 18.4 136 34.2 29.7 115
Salt River Summit 7640 .5 .0 * 16.9 18.9 89
Spring Creek Divide 9000 23.2 22.6 103 26.1 27.4 95
Trial Lake 9992 25.6 18.8 136 31.4 26.9 117
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Basin Index (%) 128 110
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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.