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 SUNDAY: MARCH 31 , 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 15.7 16.2 97 20.0 19.6 102
Blind Bull Sum 8650 23.4 23.6 99 16.1 17.5 92
Cottonwood Creek 7670 20.7 21.4 97 25.0 24.4 102
East Rim Divide 7930 9.0 10.3 87 10.4 10.9 95
Grand Targhee 9260 37.1 40.1 93 25.8 29.8 87
Granite Creek 6770 14.9 15.6 96 15.8 17.2 92
Grassy Lake 7265 28.3 31.6 90 33.7 33.4 101
Gros Ventre Summit 8750 11.7 12.6 93 13.1 11.8 111
Gunsight Pass 9820 12.3 12.6 98 13.9 13.2 105
Lewis Lake Divide 7850 31.7 30.0 106 34.8 31.8 109
Loomis Park 8240 11.9 15.3 78 14.6 16.4 89
Phillips Bench 8200 24.6 25.9 95 27.2 26.1 104
Salt River Summit 7640 15.8 13.4 118 14.6 15.3 95
Snake River Station 6920 16.2 16.8 96 22.6 21.3 106
Somsen Ranch 6800 17.8 11.4 156 20.9 16.3 128
Spring Creek Divide 9000 -M 24.2 * -M 23.1 *
Thumb Divide 7980 17.0 15.8 108 17.7 17.0 104
Togwotee Pass 9580 19.3 22.9 84 18.8 24.0 78
Triple Peak 8500 23.1 22.4 103 23.2 24.4 95
Two Ocean Plateau 9240 26.7 28.0 95 25.5 25.3 101
Willow Creek 8080 33.1 29.0 114 33.4 31.8 105
Younts Peak 8350 14.2 14.2 100 14.9 14.3 104
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Basin Index (%) 99 100
MADISON HEADWATERS IN WYOMING
Black Bear 8170 33.0 36.9 89 37.0 35.1 105
Canyon 7870 10.9 -M * 13.6 -M *
Madison Plateau 7750 20.3 21.7 94 22.8 23.5 97
West Yellowstone 6700 9.0 10.2 88 13.5 13.6 99
Whiskey Creek 6800 13.6 15.0 91 19.7 19.2 103
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Basin Index (%) 91 102
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 14.7 21.1 70 14.3 19.4 74
Canyon 7870 10.9 -M * 13.6 -M *
Evening Star 9200 20.5 24.2 85 25.7 26.8 96
Fisher Creek 9100 22.4 31.4 71 25.0 31.6 79
Monument Peak 8850 14.5 19.7 74 17.4 20.6 84
Northeast Entrance 7350 6.2 9.4 66 10.2 12.4 82
Parker Peak 9400 19.8 20.2 98 21.3 19.2 111
Sylvan Lake 8420 15.8 19.1 83 22.2 22.0 101
Thumb Divide 7980 17.0 15.8 108 17.7 17.0 104
Two Ocean Plateau 9240 26.7 28.0 95 25.5 25.3 101
White Mill 8700 16.9 23.0 73 17.6 21.8 81
Wolverine 7650 9.5 10.9 87 13.0 11.9 109
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Basin Index (%) 83 92
WIND RIVER
Burroughs Creek 8750 11.2 -M * 11.4 -M *
Castle Creek 8400 6.6 6.6 100 7.9 8.2 96
Cold Springs 9630 8.0 7.2 111 11.0 8.8 125
Deer Park 9700 17.9 14.0 128 20.1 17.0 118
Hobbs Park 10100 16.0 13.7 117 16.3 12.6 129
Kirwin 9550 13.2 10.4 127 15.5 11.4 136
Little Warm 9370 9.9 10.2 97 12.8 11.5 111
South Pass 9040 15.4 14.4 107 17.2 15.0 115
St. Lawrence Alt 8620 6.4 -M * 9.7 -M *
Togwotee Pass 9580 19.3 22.9 84 18.8 24.0 78
Townsend Creek 8700 9.8 8.9 110 13.5 10.6 127
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Basin Index (%) 107 112
BIGHORN BASIN
Bald Mtn. 9380 12.3 18.6 66 11.6 15.4 75
Bear Trap Meadow 8200 4.2 6.0 70 7.3 7.8 94
Bone Springs Div 9350 12.1 16.2 75 11.4 14.8 77
Grave Springs 8550 4.2 8.0 52 6.6 8.9 74
Kirwin 9550 13.2 10.4 127 15.5 11.4 136
Marquette 8760 11.6 6.8 171 14.4 8.5 169
Middle Powder 7760 5.4 10.4 52 7.1 9.4 76
Owl Creek 8975 5.2 5.4 96 6.8 5.8 117
Powder River Pass 9480 6.1 10.6 58 9.7 11.9 82
Shell Creek 9580 11.1 14.8 75 11.8 13.2 89
Timber Creek 7950 7.9 4.4 180 11.8 7.6 155
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Basin Index (%) 84 99
SHOSHONE RIVER
Blackwater 9780 21.7 21.8 100 22.6 20.8 109
Evening Star 9200 20.5 24.2 85 25.7 26.8 96
Marquette 8760 11.6 6.8 171 14.4 8.5 169
Sylvan Lake 8420 15.8 19.1 83 22.2 22.0 101
Sylvan Road 7120 7.4 10.9 68 14.9 15.6 96
Younts Peak 8350 14.2 14.2 100 14.9 14.3 104
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Basin Index (%) 94 106
POWDER RIVER
Bear Trap Meadow 8200 4.2 6.0 70 7.3 7.8 94
Cloud Peak Reservoir 9860 11.0 14.0 79 12.7 12.6 101
Grave Springs 8550 4.2 8.0 52 6.6 8.9 74
Hansen Sawmill 8360 4.9 6.6 74 7.8 8.0 98
Middle Powder 7760 5.4 10.4 52 7.1 9.4 76
Powder River Pass 9480 6.1 10.6 58 9.7 11.9 82
Soldier Park 8720 3.9 7.1 55 8.9 8.6 103
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Basin Index (%) 63 89
TONGUE RIVER
Big Goose 7990 5.6 8.2 68 9.6 9.4 102
Bone Springs Div 9350 12.1 16.2 75 11.4 14.8 77
Burgess Junction 7880 7.1 9.8 72 10.5 10.9 96
Dome Lake 8880 -M 11.2 * 9.9 12.0 82
Little Goose 8870 7.5 9.2 82 10.8 11.4 95
Sucker Creek 8880 8.9 11.6 77 12.5 12.9 97
Tie Creek 6870 2.3 5.0 46 11.1 10.2 109
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Basin Index (%) 72 93
BELLE FOURCHE
Blind Park 6890 .0 7.0 0 5.9 10.4 57
Cole Canyon 5910 1.8 5.1 35 5.1 8.5 60
North Rapid Creek 6130 4.7 6.6 71 6.6 8.4 79
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Basin Index (%) 35 64
CHEYENNE RIVER BASIN
Blind Park 6890 .0 7.0 0 5.9 10.4 57
North Rapid Creek 6130 4.7 6.6 71 6.6 8.4 79
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Basin Index (%) 35 66
UPPER N. PLATTE
Arapaho Ridge 10976 21.0 20.7 101 20.9 20.9 100
Blackhall Mtn 9839 32.0 30.0 107 33.6 28.7 117
Cinnabar Park 9707 20.0 19.9 101 22.4 22.8 98
Columbine 9167 26.8 21.8 123 25.2 23.2 109
Divide Peak 8730 21.4 19.4 110 23.7 20.8 114
Joe Wright 10158 18.6 19.5 95 22.7 25.0 91
Laprele Creek 8390 7.1 9.2 77 10.3 11.2 92
Med Bow 10512 37.2 -M * 32.0 -M *
Never Summer 10323 18.3 19.6 93 14.1 16.4 86
North French Creek 10153 26.2 27.3 96 26.0 25.7 101
Old Battle 9860 32.2 29.0 111 32.7 31.6 103
Rawah 9069 12.7 10.6 120 15.9 14.7 108
Sage Creek Basin 7850 16.0 13.0 123 15.3 12.4 123
Sand Lake 10098 29.0 26.4 110 27.9 23.8 117
South Brush Creek 8495 10.7 11.8 91 11.9 13.2 90
Tower 10620 40.1 42.0 95 36.6 38.2 96
Webber Springs 9260 23.8 21.6 110 25.4 24.5 104
Whiskey Park 9020 31.7 25.4 125 29.2 26.4 111
Willow Creek Pass 9523 13.9 12.6 110 14.6 13.1 111
Zirkel 9338 25.9 27.6 94 27.9 30.0 93
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Basin Index (%) 105 103
SWEETWATER
Deer Park 9700 17.9 14.0 128 20.1 17.0 118
Larsen Creek 9000 9.1 10.4 88 14.0 13.0 108
South Pass 9040 15.4 14.4 107 17.2 15.0 115
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Basin Index (%) 109 114
LOWER N. PLATTE
Casper Mtn. 7920 9.6 12.9 74 13.4 13.2 102
Laprele Creek 8390 7.1 9.2 77 10.3 11.2 92
Reno Hill 8430 9.3 13.8 67 13.0 14.4 90
Windy Peak 7915 8.3 7.8 106 9.6 9.8 98
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Basin Index (%) 78 95
LARAMIE RIVER
Brooklyn Lake 10250 24.3 20.6 118 24.5 20.9 117
Cinnabar Park 9707 20.0 19.9 101 22.4 22.8 98
Crow Creek 8335 5.5 5.9 93 9.9 10.1 98
Deadman Hill 10239 19.2 15.7 122 17.9 16.9 106
Rawah 9069 12.7 10.6 120 15.9 14.7 108
Roach 9740 14.8 15.0 99 17.1 18.2 94
Windy Peak 7915 8.3 7.8 106 9.6 9.8 98
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Basin Index (%) 110 103
S. PLATTE
Crow Creek 8335 5.5 5.9 93 9.9 10.1 98
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Basin Index (%) 93 98
LITTLE SNAKE RIVER
Battle Mountain 7498 12.2 11.0 111 18.5 14.4 128
Divide Peak 8730 21.4 19.4 110 23.7 20.8 114
Elk River 8739 19.0 17.6 108 19.5 18.1 108
Elkhead Divide 8800 23.0 -M * 23.2 -M *
Little Snake River 8928 29.4 25.4 116 32.6 31.0 105
Old Battle 9860 32.2 29.0 111 32.7 31.6 103
Sage Creek Basin 7850 16.0 13.0 123 15.3 12.4 123
Sandstone RS 8152 19.0 12.4 153 18.0 17.2 105
Whiskey Park 9020 31.7 25.4 125 29.2 26.4 111
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Basin Index (%) 118 110
UPPER GREEN RIVER
Big Sandy Opening 9080 13.1 12.9 102 14.0 12.2 115
Blind Bull Sum 8650 23.4 23.6 99 16.1 17.5 92
East Rim Divide 7930 9.0 10.3 87 10.4 10.9 95
Elkhart Park G.S. 9400 10.2 12.2 84 11.0 12.4 89
Gros Ventre Summit 8750 11.7 12.6 93 13.1 11.8 111
Gunsight Pass 9820 12.3 12.6 98 13.9 13.2 105
Indian Creek 9425 23.0 22.9 100 19.5 19.3 101
Kendall R.S. 7740 9.2 11.3 81 12.6 13.0 97
Larsen Creek 9000 9.1 10.4 88 14.0 13.0 108
Loomis Park 8240 11.9 15.3 78 14.6 16.4 89
New Fork Lake 8340 8.5 10.4 82 -M 10.4 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 9.9 12.4 80 12.3 13.6 90
Spring Creek Divide 9000 -M 24.2 * -M 23.1 *
Triple Peak 8500 23.1 22.4 103 23.2 24.4 95
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Basin Index (%) 92 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 11.4 8.8 130 13.8 12.0 115
Buck Pasture 9632 15.5 -M * 15.8 -M *
EF Blacks Fork GS 9360 11.8 11.3 104 10.1 10.4 97
Hams Fork 7840 -M 10.8 * 11.2 10.8 104
Henrys Fork 10182 -M -M * 13.3 -M *
Hewinta 9500 12.7 10.2 125 14.8 12.6 117
Hickerson Park 9122 11.3 7.5 151 13.6 9.7 140
Hole-in-Rock 9168 9.3 7.0 133 10.9 9.4 116
Indian Creek 9425 23.0 22.9 100 19.5 19.3 101
Kelley R.S. 8180 16.6 14.5 114 17.1 15.6 110
Spirit Lk 10235 15.2 11.7 130 18.5 15.9 116
Steel Creek Park 10158 15.4 13.8 112 17.5 15.4 114
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Basin Index (%) 118 112
UPPER BEAR RIVER
Bear River RS 8777 12.8 9.4 136 14.4 11.4 126
Bug Lake 7987 22.4 18.3 122 22.7 17.2 132
Burts Miller Ranch 8000 9.3 5.4 172 12.6 7.1 177
Chalk Creek #1 9171 24.3 22.5 108 24.4 22.2 110
Giveout 6930 11.4 8.0 142 12.7 11.6 109
Hayden Fork 9130 19.2 14.4 133 22.7 19.6 116
Kelley R.S. 8180 16.6 14.5 114 17.1 15.6 110
Lily Lake 9133 14.0 12.2 115 15.7 14.6 108
Monte Cristo 8932 29.4 25.8 114 27.6 25.3 109
Salt River Summit 7640 15.8 13.4 118 14.6 15.3 95
Spring Creek Divide 9000 -M 24.2 * -M 23.1 *
Trial Lake 9992 28.0 21.4 131 26.1 21.4 122
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Basin Index (%) 123 116
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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.