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: MARCH 15 , 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 15.2 16.0 95 18.9 18.0 105
Blind Bull Sum 8650 21.7 21.2 102 15.2 16.1 94
Cottonwood Creek 7670 20.4 19.2 106 23.7 22.0 108
East Rim Divide 7930 8.7 9.8 89 9.8 10.1 97
Grand Targhee 9260 34.2 35.7 96 24.7 27.0 91
Granite Creek 6770 14.0 15.4 91 14.7 16.6 89
Grassy Lake 7265 26.3 28.4 93 31.9 31.5 101
Gros Ventre Summit 8750 10.6 10.8 98 11.9 10.5 113
Gunsight Pass 9820 11.6 11.7 99 12.9 12.2 106
Lewis Lake Divide 7850 29.1 26.9 108 32.0 28.6 112
Loomis Park 8240 12.1 13.6 89 13.3 14.8 90
Phillips Bench 8200 23.0 22.6 102 25.5 23.4 109
Salt River Summit 7640 14.4 11.6 124 13.6 13.4 101
Snake River Station 6920 16.0 15.6 103 21.7 19.2 113
Somsen Ranch 6800 16.7 11.7 143 19.8 14.5 137
Spring Creek Divide 9000 20.9 21.4 98 20.3 21.0 97
Thumb Divide 7980 16.3 14.1 116 16.5 15.0 110
Togwotee Pass 9580 17.6 21.0 84 17.3 22.2 78
Triple Peak 8500 21.5 21.3 101 22.4 22.7 99
Two Ocean Plateau 9240 24.4 25.4 96 20.6 23.1 89
Willow Creek 8080 30.4 26.4 115 31.3 28.8 109
Younts Peak 8350 13.1 13.2 99 13.9 13.0 107
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Basin Index (%) 101 102
MADISON HEADWATERS IN WYOMING
Black Bear 8170 30.6 33.0 93 34.3 32.4 106
Canyon 7870 9.7 -M * 12.4 -M *
Madison Plateau 7750 18.6 20.2 92 21.2 21.7 98
West Yellowstone 6700 8.4 10.0 84 12.6 12.8 98
Whiskey Creek 6800 12.2 14.2 86 18.0 17.2 105
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Basin Index (%) 90 102
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 13.5 19.4 70 13.1 17.7 74
Canyon 7870 9.7 -M * 12.4 -M *
Evening Star 9200 19.2 23.0 83 24.2 25.4 95
Fisher Creek 9100 20.0 28.2 71 22.2 28.1 79
Monument Peak 8850 12.8 18.2 70 15.8 18.6 85
Northeast Entrance 7350 5.3 9.4 56 9.0 11.6 78
Parker Peak 9400 18.1 18.6 97 19.6 17.8 110
Sylvan Lake 8420 14.8 17.4 85 20.6 20.1 102
Thumb Divide 7980 16.3 14.1 116 16.5 15.0 110
Two Ocean Plateau 9240 24.4 25.4 96 20.6 23.1 89
White Mill 8700 14.8 21.2 70 15.6 20.6 76
Wolverine 7650 9.3 10.8 86 12.2 11.0 111
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Basin Index (%) 82 91
WIND RIVER
Burroughs Creek 8750 10.9 -M * 10.8 -M *
Castle Creek 8400 6.2 6.8 91 7.3 7.6 96
Cold Springs 9630 8.0 6.4 125 10.8 7.5 144
Deer Park 9700 15.5 11.7 132 17.7 14.8 120
Hobbs Park 10100 15.3 11.4 134 15.7 10.4 151
Kirwin 9550 12.2 9.3 131 14.7 10.0 147
Little Warm 9370 9.1 8.9 102 11.8 10.6 111
South Pass 9040 13.6 12.6 108 15.4 12.6 122
St. Lawrence Alt 8620 6.2 -M * 9.4 -M *
Togwotee Pass 9580 17.6 21.0 84 17.3 22.2 78
Townsend Creek 8700 9.3 7.8 119 12.8 8.9 144
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Basin Index (%) 111 118
BIGHORN BASIN
Bald Mtn. 9380 11.2 16.0 70 10.8 13.7 79
Bear Trap Meadow 8200 3.7 5.7 65 6.4 6.8 94
Bone Springs Div 9350 10.6 13.8 77 10.3 12.9 80
Grave Springs 8550 3.7 7.4 50 6.1 8.0 76
Kirwin 9550 12.2 9.3 131 14.7 10.0 147
Marquette 8760 10.2 6.0 170 13.3 7.2 185
Middle Powder 7760 4.6 8.9 52 6.5 8.6 76
Owl Creek 8975 5.3 4.6 115 6.6 5.0 132
Powder River Pass 9480 5.6 9.5 59 9.1 10.6 86
Shell Creek 9580 10.2 12.7 80 11.0 11.6 95
Timber Creek 7950 7.2 4.4 164 11.3 6.3 179
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Basin Index (%) 86 105
SHOSHONE RIVER
Blackwater 9780 19.8 19.9 99 20.6 18.8 110
Evening Star 9200 19.2 23.0 83 24.2 25.4 95
Marquette 8760 10.2 6.0 170 13.3 7.2 185
Sylvan Lake 8420 14.8 17.4 85 20.6 20.1 102
Sylvan Road 7120 8.2 10.7 77 14.6 14.8 99
Younts Peak 8350 13.1 13.2 99 13.9 13.0 107
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Basin Index (%) 95 108
POWDER RIVER
Bear Trap Meadow 8200 3.7 5.7 65 6.4 6.8 94
Cloud Peak Reservoir 9860 10.6 12.4 85 12.1 11.0 110
Grave Springs 8550 3.7 7.4 50 6.1 8.0 76
Hansen Sawmill 8360 4.6 5.8 79 7.3 7.2 101
Middle Powder 7760 4.6 8.9 52 6.5 8.6 76
Powder River Pass 9480 5.6 9.5 59 9.1 10.6 86
Soldier Park 8720 3.4 6.0 57 8.4 7.8 108
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Basin Index (%) 65 93
TONGUE RIVER
Big Goose 7990 5.2 7.0 74 9.2 8.4 110
Bone Springs Div 9350 10.6 13.8 77 10.3 12.9 80
Burgess Junction 7880 6.2 9.2 67 9.6 10.0 96
Dome Lake 8880 -M 9.7 * 9.2 10.4 88
Little Goose 8870 7.2 8.2 88 10.3 9.8 105
Sucker Creek 8880 8.4 10.4 81 11.8 11.8 100
Tie Creek 6870 2.1 4.8 44 10.4 9.0 116
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Basin Index (%) 74 98
BELLE FOURCHE
Blind Park 6890 2.7 7.1 38 -M 9.4 *
Cole Canyon 5910 2.8 5.2 54 4.4 7.5 59
North Rapid Creek 6130 4.9 6.5 75 6.0 7.8 77
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Basin Index (%) 55 68
CHEYENNE RIVER BASIN
Blind Park 6890 2.7 7.1 38 -M 9.4 *
North Rapid Creek 6130 4.9 6.5 75 6.0 7.8 77
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Basin Index (%) 56 77
UPPER N. PLATTE
Arapaho Ridge 10976 19.1 18.6 103 18.9 18.8 101
Blackhall Mtn 9839 30.3 24.5 124 31.0 24.2 128
Cinnabar Park 9707 18.6 18.4 101 20.7 20.9 99
Columbine 9167 24.6 20.6 119 23.1 20.9 111
Divide Peak 8730 19.2 17.0 113 21.6 18.2 119
Joe Wright 10158 17.7 18.0 98 21.5 22.3 96
Laprele Creek 8390 6.8 8.4 81 9.8 9.8 100
Med Bow 10512 33.5 -M * 29.4 -M *
Never Summer 10323 16.2 17.2 94 12.6 14.5 87
North French Creek 10153 24.2 24.0 101 23.9 22.2 108
Old Battle 9860 28.5 26.0 110 29.2 28.5 102
Rawah 9069 11.4 9.6 119 14.4 13.2 109
Sage Creek Basin 7850 15.2 12.5 122 14.0 11.2 125
Sand Lake 10098 26.5 22.4 118 25.5 20.5 124
South Brush Creek 8495 9.9 10.4 95 10.7 11.6 92
Tower 10620 37.0 37.8 98 34.3 34.8 99
Webber Springs 9260 21.4 19.0 113 22.8 21.5 106
Whiskey Park 9020 28.9 24.2 119 27.2 24.0 113
Willow Creek Pass 9523 12.4 11.0 113 13.2 11.6 114
Zirkel 9338 24.2 25.1 96 25.7 26.6 97
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Basin Index (%) 108 107
SWEETWATER
Deer Park 9700 15.5 11.7 132 17.7 14.8 120
Larsen Creek 9000 7.8 10.2 76 11.8 11.2 105
South Pass 9040 13.6 12.6 108 15.4 12.6 122
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Basin Index (%) 107 116
LOWER N. PLATTE
Casper Mtn. 7920 8.7 11.0 79 12.7 11.1 114
Laprele Creek 8390 6.8 8.4 81 9.8 9.8 100
Reno Hill 8430 8.6 11.6 74 12.4 11.9 104
Windy Peak 7915 7.8 6.7 116 9.1 8.1 112
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Basin Index (%) 85 108
LARAMIE RIVER
Brooklyn Lake 10250 22.5 17.6 128 22.9 18.2 126
Cinnabar Park 9707 18.6 18.4 101 20.7 20.9 99
Crow Creek 8335 4.8 6.3 76 8.9 8.6 103
Deadman Hill 10239 17.7 14.4 123 16.4 14.6 112
Rawah 9069 11.4 9.6 119 14.4 13.2 109
Roach 9740 12.8 13.4 96 15.2 15.6 97
Windy Peak 7915 7.8 6.7 116 9.1 8.1 112
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Basin Index (%) 111 108
S. PLATTE
Crow Creek 8335 4.8 6.3 76 8.9 8.6 103
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Basin Index (%) 76 103
LITTLE SNAKE RIVER
Battle Mountain 7498 12.1 10.7 113 17.4 13.0 134
Divide Peak 8730 19.2 17.0 113 21.6 18.2 119
Elk River 8739 17.4 16.4 106 17.4 16.2 107
Elkhead Divide 8800 21.0 -M * 21.5 -M *
Little Snake River 8928 27.0 23.6 114 30.0 27.7 108
Old Battle 9860 28.5 26.0 110 29.2 28.5 102
Sage Creek Basin 7850 15.2 12.5 122 14.0 11.2 125
Sandstone RS 8152 17.8 11.3 158 16.5 15.8 104
Whiskey Park 9020 28.9 24.2 119 27.2 24.0 113
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Basin Index (%) 117 112
UPPER GREEN RIVER
Big Sandy Opening 9080 10.5 11.4 92 11.4 10.9 105
Blind Bull Sum 8650 21.7 21.2 102 15.2 16.1 94
East Rim Divide 7930 8.7 9.8 89 9.8 10.1 97
Elkhart Park G.S. 9400 8.8 10.8 81 9.9 10.9 91
Gros Ventre Summit 8750 10.6 10.8 98 11.9 10.5 113
Gunsight Pass 9820 11.6 11.7 99 12.9 12.2 106
Indian Creek 9425 20.6 20.4 101 17.8 17.2 103
Kendall R.S. 7740 9.2 10.8 85 11.8 11.8 100
Larsen Creek 9000 7.8 10.2 76 11.8 11.2 105
Loomis Park 8240 12.1 13.6 89 13.3 14.8 90
New Fork Lake 8340 8.1 9.4 86 5.7 9.4 61
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 9.1 11.8 77 11.3 12.4 91
Spring Creek Divide 9000 20.9 21.4 98 20.3 21.0 97
Triple Peak 8500 21.5 21.3 101 22.4 22.7 99
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Basin Index (%) 93 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 11.0 7.6 145 13.2 10.4 127
Buck Pasture 9632 14.0 -M * 14.5 -M *
EF Blacks Fork GS 9360 8.2 10.2 80 9.4 9.6 98
Hams Fork 7840 -M 10.2 * 10.3 9.4 110
Henrys Fork 10182 -M -M * 12.3 -M *
Hewinta 9500 11.8 8.8 134 14.2 11.1 128
Hickerson Park 9122 10.9 6.8 160 12.9 8.7 148
Hole-in-Rock 9168 8.6 6.3 137 10.1 8.4 120
Indian Creek 9425 20.6 20.4 101 17.8 17.2 103
Kelley R.S. 8180 14.9 12.9 116 15.6 14.3 109
Spirit Lk 10235 13.7 10.4 132 17.0 14.3 119
Steel Creek Park 10158 14.3 12.6 113 16.4 13.0 126
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Basin Index (%) 119 118
UPPER BEAR RIVER
Bear River RS 8777 11.2 8.2 137 13.2 9.9 133
Bug Lake 7987 21.9 16.4 134 21.2 15.4 138
Burts Miller Ranch 8000 8.9 5.2 171 11.8 6.4 184
Chalk Creek #1 9171 21.0 19.8 106 22.0 20.3 108
Giveout 6930 10.8 8.2 132 11.9 10.3 116
Hayden Fork 9130 16.8 13.0 129 20.4 17.4 117
Kelley R.S. 8180 14.9 12.9 116 15.6 14.3 109
Lily Lake 9133 12.9 11.4 113 14.5 13.6 107
Monte Cristo 8932 27.1 23.2 117 26.0 21.9 119
Salt River Summit 7640 14.4 11.6 124 13.6 13.4 101
Spring Creek Divide 9000 20.9 21.4 98 20.3 21.0 97
Trial Lake 9992 23.1 19.3 120 22.9 19.2 119
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Basin Index (%) 120 117
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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.
