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 FRIDAY: APRIL 12 , 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 15.0 14.7 102 20.9 20.3 103
Blind Bull Sum 8650 24.6 24.6 100 16.8 17.8 94
Cottonwood Creek 7670 21.2 21.2 100 26.5 25.6 104
East Rim Divide 7930 8.1 10.2 79 11.2 11.4 98
Grand Targhee 9260 40.0 45.3 88 26.7 32.4 82
Granite Creek 6770 14.9 14.0 106 16.7 18.6 90
Grassy Lake 7265 28.5 32.2 89 35.2 35.5 99
Gros Ventre Summit 8750 12.1 12.8 95 13.8 12.4 111
Gunsight Pass 9820 13.7 13.0 105 15.3 14.2 108
Lewis Lake Divide 7850 32.0 31.9 100 35.8 33.3 108
Loomis Park 8240 11.7 14.9 79 15.4 16.8 92
Phillips Bench 8200 25.0 26.3 95 28.4 26.8 106
Salt River Summit 7640 15.6 12.3 127 15.3 16.3 94
Snake River Station 6920 14.9 15.2 98 23.2 22.8 102
Somsen Ranch 6800 16.6 9.7 171 21.9 16.7 131
Spring Creek Divide 9000 -M 25.1 * -M 23.6 *
Thumb Divide 7980 17.2 15.8 109 18.5 18.2 102
Togwotee Pass 9580 20.4 23.8 86 20.4 24.8 82
Triple Peak 8500 23.5 22.7 104 23.9 25.4 94
Two Ocean Plateau 9240 28.3 30.6 92 26.8 27.3 98
Willow Creek 8080 35.0 29.0 121 35.4 33.6 105
Younts Peak 8350 14.5 14.6 99 15.5 15.1 103
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Basin Index (%) 100 100
MADISON HEADWATERS IN WYOMING
Black Bear 8170 32.3 38.8 83 38.5 37.6 102
Canyon 7870 11.0 -M * 14.1 -M *
Madison Plateau 7750 20.5 23.2 88 23.9 25.2 95
West Yellowstone 6700 7.8 8.6 91 13.8 14.0 99
Whiskey Creek 6800 13.7 15.0 91 20.2 20.4 99
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Basin Index (%) 87 99
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.8 22.0 72 15.4 20.4 75
Canyon 7870 11.0 -M * 14.1 -M *
Evening Star 9200 21.2 25.1 84 26.9 28.4 95
Fisher Creek 9100 22.9 34.1 67 26.2 34.0 77
Monument Peak 8850 14.9 21.2 70 18.4 22.1 83
Northeast Entrance 7350 5.6 8.4 67 10.7 13.2 81
Parker Peak 9400 21.2 21.9 97 22.5 20.4 110
Sylvan Lake 8420 15.9 20.1 79 23.6 23.6 100
Thumb Divide 7980 17.2 15.8 109 18.5 18.2 102
Two Ocean Plateau 9240 28.3 30.6 92 26.8 27.3 98
White Mill 8700 17.5 24.8 71 18.4 23.4 79
Wolverine 7650 8.6 8.7 99 13.5 12.8 105
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Basin Index (%) 81 91
WIND RIVER
Burroughs Creek 8750 10.4 -M * 12.0 -M *
Castle Creek 8400 5.8 5.8 100 8.2 8.9 92
Cold Springs 9630 7.8 7.0 111 11.7 9.7 121
Deer Park 9700 18.4 15.2 121 21.2 18.5 115
Hobbs Park 10100 16.5 15.2 109 17.1 14.2 120
Kirwin 9550 13.6 11.0 124 16.0 12.2 131
Little Warm 9370 10.4 10.0 104 13.7 12.0 114
South Pass 9040 15.5 15.4 101 18.0 16.4 110
St. Lawrence Alt 8620 6.2 -M * 10.4 -M *
Togwotee Pass 9580 20.4 23.8 86 20.4 24.8 82
Townsend Creek 8700 10.1 9.8 103 14.3 12.4 115
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Basin Index (%) 105 109
BIGHORN BASIN
Bald Mtn. 9380 14.6 19.5 75 13.5 16.3 83
Bear Trap Meadow 8200 6.8 5.6 121 9.7 9.4 103
Bone Springs Div 9350 13.7 18.0 76 12.6 16.2 78
Grave Springs 8550 8.0 8.6 93 10.4 10.0 104
Kirwin 9550 13.6 11.0 124 16.0 12.2 131
Marquette 8760 12.2 7.7 158 15.5 9.9 157
Middle Powder 7760 11.7 11.3 104 10.7 10.1 106
Owl Creek 8975 5.1 5.5 93 7.8 6.6 118
Powder River Pass 9480 7.3 10.8 68 11.9 13.2 90
Shell Creek 9580 13.5 16.0 84 13.7 14.2 96
Timber Creek 7950 7.8 5.2 150 12.4 8.1 153
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Basin Index (%) 96 106
SHOSHONE RIVER
Blackwater 9780 22.8 24.0 95 24.0 22.6 106
Evening Star 9200 21.2 25.1 84 26.9 28.4 95
Marquette 8760 12.2 7.7 158 15.5 9.9 157
Sylvan Lake 8420 15.9 20.1 79 23.6 23.6 100
Sylvan Road 7120 5.2 10.2 51 15.5 16.5 94
Younts Peak 8350 14.5 14.6 99 15.5 15.1 103
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Basin Index (%) 90 104
POWDER RIVER
Bear Trap Meadow 8200 6.8 5.6 121 9.7 9.4 103
Cloud Peak Reservoir 9860 12.8 15.1 85 14.7 14.1 104
Grave Springs 8550 8.0 8.6 93 10.4 10.0 104
Hansen Sawmill 8360 6.0 6.2 97 9.5 8.8 108
Middle Powder 7760 11.7 11.3 104 10.7 10.1 106
Powder River Pass 9480 7.3 10.8 68 11.9 13.2 90
Soldier Park 8720 4.4 6.0 73 10.0 9.7 103
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Basin Index (%) 90 102
TONGUE RIVER
Big Goose 7990 6.9 9.0 77 11.2 10.6 106
Bone Springs Div 9350 13.7 18.0 76 12.6 16.2 78
Burgess Junction 7880 9.2 11.4 81 12.6 12.6 100
Dome Lake 8880 -M 11.8 * 11.9 13.6 88
Little Goose 8870 8.9 10.3 86 13.0 12.6 103
Sucker Creek 8880 11.0 12.6 87 15.2 14.7 103
Tie Creek 6870 1.9 4.5 42 12.8 11.3 113
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Basin Index (%) 78 97
BELLE FOURCHE
Blind Park 6890 .3 5.9 5 7.0 11.8 59
Cole Canyon 5910 1.8 3.8 47 7.7 9.6 80
North Rapid Creek 6130 4.5 5.8 78 9.0 9.5 95
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Basin Index (%) 43 77
CHEYENNE RIVER BASIN
Blind Park 6890 .3 5.9 5 7.0 11.8 59
North Rapid Creek 6130 4.5 5.8 78 9.0 9.5 95
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Basin Index (%) 41 75
UPPER N. PLATTE
Arapaho Ridge 10976 22.1 22.7 97 22.0 22.4 98
Blackhall Mtn 9839 33.3 30.4 110 35.3 30.3 117
Cinnabar Park 9707 20.5 20.7 99 23.4 23.9 98
Columbine 9167 26.5 22.0 120 26.4 25.8 102
Divide Peak 8730 21.7 20.1 108 24.8 21.8 114
Joe Wright 10158 19.2 21.4 90 24.0 26.2 92
Laprele Creek 8390 7.8 9.2 85 11.7 12.0 98
Med Bow 10512 40.0 -M * 34.0 -M *
Never Summer 10323 19.4 20.7 94 14.8 17.8 83
North French Creek 10153 27.2 30.9 88 27.6 27.8 99
Old Battle 9860 33.9 32.2 105 34.5 35.2 98
Rawah 9069 12.0 10.0 120 16.5 16.0 103
Sage Creek Basin 7850 13.9 11.3 123 15.6 13.3 117
Sand Lake 10098 30.6 29.2 105 29.2 25.8 113
South Brush Creek 8495 10.1 10.1 100 12.4 14.0 89
Tower 10620 42.3 44.5 95 40.5 40.5 100
Webber Springs 9260 23.9 21.8 110 26.7 25.9 103
Whiskey Park 9020 32.1 26.8 120 30.7 28.0 110
Willow Creek Pass 9523 14.3 13.6 105 15.0 13.9 108
Zirkel 9338 26.1 26.1 100 29.4 31.0 95
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Basin Index (%) 103 102
SWEETWATER
Deer Park 9700 18.4 15.2 121 21.2 18.5 115
Larsen Creek 9000 9.2 8.6 107 14.9 13.8 108
South Pass 9040 15.5 15.4 101 18.0 16.4 110
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Basin Index (%) 110 111
LOWER N. PLATTE
Casper Mtn. 7920 12.3 13.8 89 15.8 14.2 111
Laprele Creek 8390 7.8 9.2 85 11.7 12.0 98
Reno Hill 8430 10.9 14.2 77 15.1 15.8 96
Windy Peak 7915 8.8 7.6 116 10.6 10.5 101
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Basin Index (%) 89 101
LARAMIE RIVER
Brooklyn Lake 10250 24.1 22.6 107 25.8 22.4 115
Cinnabar Park 9707 20.5 20.7 99 23.4 23.9 98
Crow Creek 8335 5.4 4.9 110 10.5 10.9 96
Deadman Hill 10239 20.0 16.9 118 18.5 18.2 102
Rawah 9069 12.0 10.0 120 16.5 16.0 103
Roach 9740 14.5 15.2 95 17.7 19.5 91
Windy Peak 7915 8.8 7.6 116 10.6 10.5 101
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Basin Index (%) 108 101
S. PLATTE
Crow Creek 8335 5.4 4.9 110 10.5 10.9 96
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Basin Index (%) 110 96
LITTLE SNAKE RIVER
Battle Mountain 7498 10.0 8.4 119 18.9 15.4 123
Divide Peak 8730 21.7 20.1 108 24.8 21.8 114
Elk River 8739 19.5 16.6 117 20.7 19.9 104
Elkhead Divide 8800 23.7 -M * 24.6 -M *
Little Snake River 8928 29.8 26.2 114 34.5 32.8 105
Old Battle 9860 33.9 32.2 105 34.5 35.2 98
Sage Creek Basin 7850 13.9 11.3 123 15.6 13.3 117
Sandstone RS 8152 17.2 12.4 139 18.5 18.2 102
Whiskey Park 9020 32.1 26.8 120 30.7 28.0 110
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Basin Index (%) 116 107
UPPER GREEN RIVER
Big Sandy Opening 9080 13.9 13.4 104 15.2 13.5 113
Blind Bull Sum 8650 24.6 24.6 100 16.8 17.8 94
East Rim Divide 7930 8.1 10.2 79 11.2 11.4 98
Elkhart Park G.S. 9400 11.8 12.9 91 12.9 12.9 100
Gros Ventre Summit 8750 12.1 12.8 95 13.8 12.4 111
Gunsight Pass 9820 13.7 13.0 105 15.3 14.2 108
Indian Creek 9425 23.7 23.6 100 20.5 19.8 104
Kendall R.S. 7740 8.6 10.2 84 13.2 13.3 99
Larsen Creek 9000 9.2 8.6 107 14.9 13.8 108
Loomis Park 8240 11.7 14.9 79 15.4 16.8 92
New Fork Lake 8340 8.1 10.2 79 6.7 10.8 62
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 9.8 12.2 80 12.8 14.0 91
Spring Creek Divide 9000 -M 25.1 * -M 23.6 *
Triple Peak 8500 23.5 22.7 104 23.9 25.4 94
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Basin Index (%) 94 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 11.1 7.6 146 14.3 12.3 116
Buck Pasture 9632 16.2 -M * 16.6 -M *
EF Blacks Fork GS 9360 11.2 11.6 97 10.4 11.4 91
Hams Fork 7840 -M 9.5 * 11.4 11.1 103
Henrys Fork 10182 -M -M * 13.9 -M *
Hewinta 9500 12.5 9.9 126 15.2 13.6 112
Hickerson Park 9122 10.1 7.0 144 13.8 10.7 129
Hole-in-Rock 9168 7.9 7.4 107 11.0 10.4 106
Indian Creek 9425 23.7 23.6 100 20.5 19.8 104
Kelley R.S. 8180 16.4 14.6 112 18.0 16.4 110
Spirit Lk 10235 15.4 13.6 113 19.3 18.1 107
Steel Creek Park 10158 15.9 15.4 103 18.2 16.8 108
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Basin Index (%) 112 108
UPPER BEAR RIVER
Bear River RS 8777 11.1 7.4 150 14.8 12.2 121
Bug Lake 7987 22.4 18.5 121 23.5 18.4 128
Burts Miller Ranch 8000 7.8 2.5 312 12.6 8.1 156
Chalk Creek #1 9171 24.9 23.1 108 25.7 23.3 110
Giveout 6930 9.8 5.7 172 13.3 12.5 106
Hayden Fork 9130 18.7 14.2 132 23.5 21.0 112
Kelley R.S. 8180 16.4 14.6 112 18.0 16.4 110
Lily Lake 9133 14.2 12.7 112 16.3 15.4 106
Monte Cristo 8932 31.0 27.3 114 29.6 26.4 112
Salt River Summit 7640 15.6 12.3 127 15.3 16.3 94
Spring Creek Divide 9000 -M 25.1 * -M 23.6 *
Trial Lake 9992 29.4 22.2 132 27.3 22.5 121
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Basin Index (%) 125 114
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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.
