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: APRIL 18 , 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 12.9 15.2 85 21.6 21.3 101
Blind Bull Sum 8650 23.6 25.1 94 16.9 18.3 92
Cottonwood Creek 7670 18.7 20.1 93 26.6 26.4 101
East Rim Divide 7930 4.3 9.8 44 11.1 11.6 96
Grand Targhee 9260 41.0 46.8 88 31.7 34.3 92
Granite Creek 6770 12.6 12.6 100 16.7 19.4 86
Grassy Lake 7265 27.1 33.0 82 36.0 37.2 97
Gros Ventre Summit 8750 11.4 13.2 86 14.1 13.2 107
Gunsight Pass 9820 12.8 13.4 96 15.3 14.8 103
Lewis Lake Divide 7850 30.6 33.0 93 36.8 34.8 106
Loomis Park 8240 9.7 13.8 70 15.5 17.2 90
Phillips Bench 8200 24.1 26.6 91 28.7 27.4 105
Salt River Summit 7640 12.8 11.0 116 15.2 16.8 90
Snake River Station 6920 12.6 15.2 83 23.7 23.3 102
Somsen Ranch 6800 12.7 8.0 159 21.8 17.4 125
Spring Creek Divide 9000 24.1 25.3 95 22.7 24.4 93
Thumb Divide 7980 16.3 16.3 100 18.9 19.2 98
Togwotee Pass 9580 20.1 24.8 81 20.7 25.9 80
Triple Peak 8500 20.9 22.0 95 25.2 26.4 95
Two Ocean Plateau 9240 29.8 32.1 93 27.7 28.2 98
Willow Creek 8080 31.9 28.5 112 35.8 34.9 103
Younts Peak 8350 13.3 15.0 89 15.8 16.0 99
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Basin Index (%) 92 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 33.5 39.7 84 39.2 38.6 102
Canyon 7870 10.8 -M * 14.3 -M *
Madison Plateau 7750 20.3 23.4 87 24.1 25.4 95
West Yellowstone 6700 5.7 7.0 81 14.0 14.9 94
Whiskey Creek 6800 12.7 15.8 80 20.2 21.0 96
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Basin Index (%) 84 98
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 16.5 23.5 70 16.0 21.8 73
Canyon 7870 10.8 -M * 14.3 -M *
Evening Star 9200 20.8 26.8 78 27.5 30.0 92
Fisher Creek 9100 23.4 35.4 66 26.7 35.2 76
Monument Peak 8850 14.4 22.3 65 19.1 23.4 82
Northeast Entrance 7350 2.8 7.5 37 11.0 13.6 81
Parker Peak 9400 21.2 22.8 93 23.0 21.2 108
Sylvan Lake 8420 15.0 20.9 72 24.0 24.6 98
Thumb Divide 7980 16.3 16.3 100 18.9 19.2 98
Two Ocean Plateau 9240 29.8 32.1 93 27.7 28.2 98
White Mill 8700 17.9 25.6 70 18.6 23.9 78
Wolverine 7650 5.2 8.2 63 13.8 13.0 106
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Basin Index (%) 76 89
WIND RIVER
Burroughs Creek 8750 8.5 -M * 12.0 -M *
Castle Creek 8400 3.5 5.3 66 8.5 9.0 94
Cold Springs 9630 5.2 6.6 79 11.9 9.8 121
Deer Park 9700 17.4 16.0 109 21.2 20.0 106
Hobbs Park 10100 15.8 15.8 100 17.2 14.5 119
Kirwin 9550 12.7 11.9 107 16.4 13.0 126
Little Warm 9370 9.6 10.4 92 13.8 12.5 110
South Pass 9040 14.2 15.6 91 18.0 17.0 106
St. Lawrence Alt 8620 2.7 -M * 10.5 -M *
Togwotee Pass 9580 20.1 24.8 81 20.7 25.9 80
Townsend Creek 8700 8.8 9.8 90 14.4 12.8 112
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Basin Index (%) 92 106
BIGHORN BASIN
Bald Mtn. 9380 14.5 20.0 72 14.1 16.9 83
Bear Trap Meadow 8200 5.0 4.0 125 10.2 9.8 104
Bone Springs Div 9350 13.9 17.9 78 13.2 16.8 79
Grave Springs 8550 7.3 8.4 87 10.8 10.7 101
Kirwin 9550 12.7 11.9 107 16.4 13.0 126
Marquette 8760 14.1 7.8 181 17.5 10.6 165
Middle Powder 7760 11.6 11.4 102 11.2 10.5 107
Owl Creek 8975 4.3 4.6 93 9.1 6.8 134
Powder River Pass 9480 6.0 10.2 59 12.6 14.1 89
Shell Creek 9580 14.2 16.4 87 14.8 14.9 99
Timber Creek 7950 6.8 5.2 131 13.1 8.8 149
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Basin Index (%) 94 108
SHOSHONE RIVER
Blackwater 9780 23.0 25.0 92 24.3 23.6 103
Evening Star 9200 20.8 26.8 78 27.5 30.0 92
Marquette 8760 14.1 7.8 181 17.5 10.6 165
Sylvan Lake 8420 15.0 20.9 72 24.0 24.6 98
Sylvan Road 7120 1.2 10.2 12 16.1 17.4 93
Younts Peak 8350 13.3 15.0 89 15.8 16.0 99
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Basin Index (%) 83 102
POWDER RIVER
Bear Trap Meadow 8200 5.0 4.0 125 10.2 9.8 104
Cloud Peak Reservoir 9860 12.7 15.1 84 16.2 14.9 109
Grave Springs 8550 7.3 8.4 87 10.8 10.7 101
Hansen Sawmill 8360 4.3 5.7 75 10.6 9.5 112
Middle Powder 7760 11.6 11.4 102 11.2 10.5 107
Powder River Pass 9480 6.0 10.2 59 12.6 14.1 89
Soldier Park 8720 2.4 6.8 35 11.3 10.7 106
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Basin Index (%) 80 103
TONGUE RIVER
Big Goose 7990 7.0 8.8 80 12.9 11.0 117
Bone Springs Div 9350 13.9 17.9 78 13.2 16.8 79
Burgess Junction 7880 9.4 11.8 80 13.5 13.4 101
Dome Lake 8880 -M 12.1 * 13.4 14.4 93
Little Goose 8870 9.2 10.8 85 14.6 13.8 106
Sucker Creek 8880 10.5 12.9 81 16.6 15.0 111
Tie Creek 6870 .7 4.3 16 13.6 12.4 110
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Basin Index (%) 76 101
BELLE FOURCHE
Blind Park 6890 -M 4.0 * 7.6 12.0 63
Cole Canyon 5910 .0 3.0 0 8.0 9.8 82
North Rapid Creek 6130 1.1 4.4 25 10.1 9.6 105
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Basin Index (%) 15 82
CHEYENNE RIVER BASIN
Blind Park 6890 -M 4.0 * 7.6 12.0 63
North Rapid Creek 6130 1.1 4.4 25 10.1 9.6 105
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Basin Index (%) 25 82
UPPER N. PLATTE
Arapaho Ridge 10976 22.7 23.2 98 23.5 23.1 102
Blackhall Mtn 9839 33.3 32.9 101 36.7 31.8 115
Cinnabar Park 9707 19.9 20.4 98 24.4 24.6 99
Columbine 9167 23.9 21.8 110 27.6 26.6 104
Divide Peak 8730 18.7 19.4 96 24.9 23.0 108
Joe Wright 10158 21.4 22.0 97 27.1 27.8 97
Laprele Creek 8390 6.6 8.2 80 12.5 12.8 98
Med Bow 10512 42.2 -M * 36.0 -M *
Never Summer 10323 21.8 21.7 100 17.2 18.4 93
North French Creek 10153 28.1 31.6 89 29.5 28.5 104
Old Battle 9860 34.2 33.4 102 35.3 35.6 99
Rawah 9069 11.5 10.8 106 18.4 17.0 108
Sage Creek Basin 7850 9.5 8.5 112 15.6 13.6 115
Sand Lake 10098 32.1 30.2 106 31.0 26.8 116
South Brush Creek 8495 9.4 9.4 100 13.6 14.4 94
Tower 10620 43.8 45.2 97 42.5 41.6 102
Webber Springs 9260 22.1 22.2 100 27.3 27.4 100
Whiskey Park 9020 30.6 26.3 116 31.5 29.4 107
Willow Creek Pass 9523 15.8 14.4 110 16.6 14.6 114
Zirkel 9338 23.2 25.5 91 30.6 33.1 92
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Basin Index (%) 100 103
SWEETWATER
Deer Park 9700 17.4 16.0 109 21.2 20.0 106
Larsen Creek 9000 5.7 8.8 65 14.8 14.4 103
South Pass 9040 14.2 15.6 91 18.0 17.0 106
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Basin Index (%) 92 105
LOWER N. PLATTE
Casper Mtn. 7920 10.8 13.5 80 16.0 15.2 105
Laprele Creek 8390 6.6 8.2 80 12.5 12.8 98
Reno Hill 8430 9.9 13.8 72 15.6 16.6 94
Windy Peak 7915 8.0 6.9 116 11.7 11.2 104
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Basin Index (%) 83 100
LARAMIE RIVER
Brooklyn Lake 10250 24.6 22.0 112 27.2 23.4 116
Cinnabar Park 9707 19.9 20.4 98 24.4 24.6 99
Crow Creek 8335 2.7 4.0 68 10.9 11.8 92
Deadman Hill 10239 21.1 17.5 121 19.8 19.4 102
Rawah 9069 11.5 10.8 106 18.4 17.0 108
Roach 9740 14.0 16.2 86 18.5 20.2 92
Windy Peak 7915 8.0 6.9 116 11.7 11.2 104
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Basin Index (%) 104 103
S. PLATTE
Crow Creek 8335 2.7 4.0 68 10.9 11.8 92
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Basin Index (%) 68 92
LITTLE SNAKE RIVER
Battle Mountain 7498 6.2 6.6 94 19.3 16.2 119
Divide Peak 8730 18.7 19.4 96 24.9 23.0 108
Elk River 8739 15.2 15.6 97 21.2 20.5 103
Elkhead Divide 8800 21.2 -M * 25.2 -M *
Little Snake River 8928 27.8 24.9 112 35.2 34.3 103
Old Battle 9860 34.2 33.4 102 35.3 35.6 99
Sage Creek Basin 7850 9.5 8.5 112 15.6 13.6 115
Sandstone RS 8152 13.0 10.2 127 19.0 18.5 103
Whiskey Park 9020 30.6 26.3 116 31.5 29.4 107
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Basin Index (%) 107 106
UPPER GREEN RIVER
Big Sandy Opening 9080 12.1 13.6 89 15.1 13.8 109
Blind Bull Sum 8650 23.6 25.1 94 16.9 18.3 92
East Rim Divide 7930 4.3 9.8 44 11.1 11.6 96
Elkhart Park G.S. 9400 10.1 12.6 80 12.8 13.0 98
Gros Ventre Summit 8750 11.4 13.2 86 14.1 13.2 107
Gunsight Pass 9820 12.8 13.4 96 15.3 14.8 103
Indian Creek 9425 22.6 24.8 91 20.5 20.2 101
Kendall R.S. 7740 5.8 9.8 59 13.3 13.6 98
Larsen Creek 9000 5.7 8.8 65 14.8 14.4 103
Loomis Park 8240 9.7 13.8 70 15.5 17.2 90
New Fork Lake 8340 5.3 9.6 55 -M 11.0 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.3 10.9 67 12.9 14.2 91
Spring Creek Divide 9000 24.1 25.3 95 22.7 24.4 93
Triple Peak 8500 20.9 22.0 95 25.2 26.4 95
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Basin Index (%) 83 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.7 7.6 114 14.4 13.0 111
Buck Pasture 9632 14.2 -M * 17.2 -M *
EF Blacks Fork GS 9360 9.2 11.4 81 10.6 12.1 88
Hams Fork 7840 -M 7.8 * 11.8 11.4 104
Henrys Fork 10182 -M -M * 14.3 -M *
Hewinta 9500 9.4 9.2 102 15.4 14.4 107
Hickerson Park 9122 7.3 6.0 122 14.3 11.2 128
Hole-in-Rock 9168 6.6 5.7 116 11.4 10.8 106
Indian Creek 9425 22.6 24.8 91 20.5 20.2 101
Kelley R.S. 8180 14.7 14.4 102 18.1 17.0 106
Spirit Lk 10235 14.6 12.8 114 19.7 19.0 104
Steel Creek Park 10158 16.1 15.8 102 18.6 17.2 108
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Basin Index (%) 101 106
UPPER BEAR RIVER
Bear River RS 8777 7.3 4.4 166 14.8 12.8 116
Bug Lake 7987 19.6 18.3 107 23.5 18.8 125
Burts Miller Ranch 8000 3.9 .6 650* 12.6 8.6 147
Chalk Creek #1 9171 24.1 23.5 103 26.2 24.0 109
Giveout 6930 5.4 3.3 164 13.4 13.1 102
Hayden Fork 9130 13.4 13.2 102 23.8 21.8 109
Kelley R.S. 8180 14.7 14.4 102 18.1 17.0 106
Lily Lake 9133 12.7 12.0 106 16.4 16.0 102
Monte Cristo 8932 29.2 27.3 107 29.9 27.0 111
Salt River Summit 7640 12.8 11.0 116 15.2 16.8 90
Spring Creek Divide 9000 24.1 25.3 95 22.7 24.4 93
Trial Lake 9992 29.5 22.2 133 27.8 23.2 120
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Basin Index (%) 112 109
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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.