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 WEDNESDAY: APRIL 17 , 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 12.8 15.4 83 21.2 21.2 100
Blind Bull Sum 8650 23.8 25.0 95 16.8 18.2 92
Cottonwood Creek 7670 18.7 20.3 92 26.2 26.2 100
East Rim Divide 7930 4.7 9.7 48 11.2 11.6 97
Grand Targhee 9260 40.7 46.8 87 31.5 33.9 93
Granite Creek 6770 12.9 12.8 101 16.7 19.4 86
Grassy Lake 7265 26.6 32.6 82 35.5 36.9 96
Gros Ventre Summit 8750 11.4 13.2 86 13.9 13.2 105
Gunsight Pass 9820 12.8 13.4 96 15.4 14.6 105
Lewis Lake Divide 7850 30.2 32.6 93 36.4 34.6 105
Loomis Park 8240 9.8 14.4 68 15.5 17.2 90
Phillips Bench 8200 23.9 26.5 90 28.4 27.4 104
Salt River Summit 7640 13.1 11.3 116 15.4 16.8 92
Snake River Station 6920 12.5 15.2 82 23.6 23.2 102
Somsen Ranch 6800 13.1 8.6 152 22.0 17.4 126
Spring Creek Divide 9000 24.3 25.2 96 22.7 24.4 93
Thumb Divide 7980 16.2 16.2 100 18.7 19.1 98
Togwotee Pass 9580 19.9 24.6 81 20.5 25.6 80
Triple Peak 8500 21.0 22.0 95 25.1 26.0 97
Two Ocean Plateau 9240 29.1 32.0 91 27.3 28.2 97
Willow Creek 8080 32.2 28.3 114 35.5 34.5 103
Younts Peak 8350 13.2 15.0 88 15.8 15.9 99
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Basin Index (%) 92 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 33.4 39.6 84 39.2 38.4 102
Canyon 7870 10.8 -M * 14.4 -M *
Madison Plateau 7750 20.2 23.4 86 24.0 25.4 94
West Yellowstone 6700 5.3 7.2 74 13.8 14.8 93
Whiskey Creek 6800 12.7 15.8 80 20.3 20.8 98
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Basin Index (%) 83 98
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 16.2 23.2 70 15.8 21.6 73
Canyon 7870 10.8 -M * 14.4 -M *
Evening Star 9200 20.4 26.4 77 27.3 29.6 92
Fisher Creek 9100 23.4 35.4 66 26.8 35.2 76
Monument Peak 8850 14.3 22.0 65 18.9 23.2 81
Northeast Entrance 7350 2.9 7.6 38 10.9 13.6 80
Parker Peak 9400 20.8 22.8 91 22.8 21.0 109
Sylvan Lake 8420 14.8 20.4 73 23.7 24.5 97
Thumb Divide 7980 16.2 16.2 100 18.7 19.1 98
Two Ocean Plateau 9240 29.1 32.0 91 27.3 28.2 97
White Mill 8700 17.8 25.2 71 18.7 23.5 80
Wolverine 7650 4.9 8.5 58 13.4 12.8 105
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Basin Index (%) 75 89
WIND RIVER
Burroughs Creek 8750 8.9 -M * 12.0 -M *
Castle Creek 8400 3.6 5.6 64 8.5 9.0 94
Cold Springs 9630 5.4 6.8 79 11.7 9.8 119
Deer Park 9700 17.2 16.0 108 21.2 19.9 107
Hobbs Park 10100 15.8 15.6 101 17.2 14.4 119
Kirwin 9550 12.8 11.8 108 16.3 13.0 125
Little Warm 9370 9.7 10.4 93 13.9 12.4 112
South Pass 9040 14.2 15.8 90 18.1 16.8 108
St. Lawrence Alt 8620 2.9 -M * 10.4 -M *
Togwotee Pass 9580 19.9 24.6 81 20.5 25.6 80
Townsend Creek 8700 8.8 9.9 89 14.4 12.8 112
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Basin Index (%) 92 106
BIGHORN BASIN
Bald Mtn. 9380 14.0 20.0 70 13.7 16.9 81
Bear Trap Meadow 8200 4.5 4.4 102 9.9 9.6 103
Bone Springs Div 9350 13.2 18.1 73 12.9 16.8 77
Grave Springs 8550 7.1 8.4 85 10.4 10.7 97
Kirwin 9550 12.8 11.8 108 16.3 13.0 125
Marquette 8760 13.4 7.8 172 17.2 10.6 162
Middle Powder 7760 10.8 11.4 95 10.7 10.5 102
Owl Creek 8975 3.3 4.8 69 8.5 6.8 125
Powder River Pass 9480 5.5 10.3 53 12.1 14.0 86
Shell Creek 9580 13.2 16.4 80 14.0 14.6 96
Timber Creek 7950 6.2 5.2 119 12.6 8.8 143
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Basin Index (%) 88 105
SHOSHONE RIVER
Blackwater 9780 22.4 24.8 90 24.1 23.5 103
Evening Star 9200 20.4 26.4 77 27.3 29.6 92
Marquette 8760 13.4 7.8 172 17.2 10.6 162
Sylvan Lake 8420 14.8 20.4 73 23.7 24.5 97
Sylvan Road 7120 1.0 10.2 10 15.7 17.2 91
Younts Peak 8350 13.2 15.0 88 15.8 15.9 99
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Basin Index (%) 81 102
POWDER RIVER
Bear Trap Meadow 8200 4.5 4.4 102 9.9 9.6 103
Cloud Peak Reservoir 9860 11.5 15.2 76 15.2 14.8 103
Grave Springs 8550 7.1 8.4 85 10.4 10.7 97
Hansen Sawmill 8360 3.3 6.0 55 9.5 9.4 101
Middle Powder 7760 10.8 11.4 95 10.7 10.5 102
Powder River Pass 9480 5.5 10.3 53 12.1 14.0 86
Soldier Park 8720 1.5 6.8 22 10.3 10.4 99
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Basin Index (%) 71 98
TONGUE RIVER
Big Goose 7990 6.0 8.8 68 11.8 10.8 109
Bone Springs Div 9350 13.2 18.1 73 12.9 16.8 77
Burgess Junction 7880 8.8 11.6 76 13.0 13.2 98
Dome Lake 8880 -M 12.2 * 12.4 14.0 89
Little Goose 8870 7.9 10.5 75 13.5 13.6 99
Sucker Creek 8880 9.7 12.8 76 15.7 14.9 105
Tie Creek 6870 .2 4.5 4 13.1 12.0 109
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Basin Index (%) 69 97
BELLE FOURCHE
Blind Park 6890 .0 4.5 0 7.3 11.9 61
Cole Canyon 5910 .0 3.1 0 8.0 9.6 83
North Rapid Creek 6130 1.1 4.8 23 9.8 9.6 102
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Basin Index (%) 9 81
CHEYENNE RIVER BASIN
Blind Park 6890 .0 4.5 0 7.3 11.9 61
North Rapid Creek 6130 1.1 4.8 23 9.8 9.6 102
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Basin Index (%) 12 80
UPPER N. PLATTE
Arapaho Ridge 10976 22.9 23.2 99 23.5 23.1 102
Blackhall Mtn 9839 32.9 32.3 102 36.6 31.6 116
Cinnabar Park 9707 19.9 20.5 97 24.2 24.5 99
Columbine 9167 23.7 21.6 110 27.5 26.4 104
Divide Peak 8730 19.0 19.3 98 24.9 22.8 109
Joe Wright 10158 21.2 21.9 97 26.7 27.6 97
Laprele Creek 8390 6.4 8.4 76 12.5 12.6 99
Med Bow 10512 41.3 -M * 35.2 -M *
Never Summer 10323 21.6 21.6 100 17.0 18.3 93
North French Creek 10153 27.6 31.6 87 29.0 28.5 102
Old Battle 9860 34.0 33.2 102 34.9 35.6 98
Rawah 9069 11.5 10.4 111 18.3 16.9 108
Sage Creek Basin 7850 9.8 9.6 102 15.6 13.6 115
Sand Lake 10098 31.4 30.2 104 30.3 26.6 114
South Brush Creek 8495 9.3 9.6 97 13.4 14.4 93
Tower 10620 43.5 45.2 96 42.2 41.3 102
Webber Springs 9260 22.4 21.8 103 27.0 27.2 99
Whiskey Park 9020 30.5 26.1 117 31.3 29.0 108
Willow Creek Pass 9523 15.8 14.4 110 16.6 14.6 114
Zirkel 9338 23.4 25.8 91 30.4 32.8 93
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Basin Index (%) 100 103
SWEETWATER
Deer Park 9700 17.2 16.0 108 21.2 19.9 107
Larsen Creek 9000 6.0 8.8 68 15.0 14.4 104
South Pass 9040 14.2 15.8 90 18.1 16.8 108
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Basin Index (%) 92 106
LOWER N. PLATTE
Casper Mtn. 7920 10.6 13.5 79 15.8 15.2 104
Laprele Creek 8390 6.4 8.4 76 12.5 12.6 99
Reno Hill 8430 9.9 13.8 72 15.5 16.6 93
Windy Peak 7915 8.1 7.4 109 11.7 11.2 104
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Basin Index (%) 81 100
LARAMIE RIVER
Brooklyn Lake 10250 24.3 21.8 111 26.8 23.4 115
Cinnabar Park 9707 19.9 20.5 97 24.2 24.5 99
Crow Creek 8335 3.2 4.5 71 10.9 11.2 97
Deadman Hill 10239 21.0 16.6 127 19.6 19.2 102
Rawah 9069 11.5 10.4 111 18.3 16.9 108
Roach 9740 13.8 16.0 86 18.2 20.1 91
Windy Peak 7915 8.1 7.4 109 11.7 11.2 104
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Basin Index (%) 105 103
S. PLATTE
Crow Creek 8335 3.2 4.5 71 10.9 11.2 97
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Basin Index (%) 71 97
LITTLE SNAKE RIVER
Battle Mountain 7498 6.7 6.8 99 19.2 16.0 120
Divide Peak 8730 19.0 19.3 98 24.9 22.8 109
Elk River 8739 15.7 16.6 95 21.2 20.4 104
Elkhead Divide 8800 21.3 -M * 25.1 -M *
Little Snake River 8928 27.9 25.1 111 35.0 34.0 103
Old Battle 9860 34.0 33.2 102 34.9 35.6 98
Sage Creek Basin 7850 9.8 9.6 102 15.6 13.6 115
Sandstone RS 8152 13.5 10.8 125 18.9 18.5 102
Whiskey Park 9020 30.5 26.1 117 31.3 29.0 108
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Basin Index (%) 107 106
UPPER GREEN RIVER
Big Sandy Opening 9080 12.0 13.4 90 15.2 13.8 110
Blind Bull Sum 8650 23.8 25.0 95 16.8 18.2 92
East Rim Divide 7930 4.7 9.7 48 11.2 11.6 97
Elkhart Park G.S. 9400 10.1 12.8 79 12.9 13.0 99
Gros Ventre Summit 8750 11.4 13.2 86 13.9 13.2 105
Gunsight Pass 9820 12.8 13.4 96 15.4 14.6 105
Indian Creek 9425 22.3 24.8 90 20.6 20.2 102
Kendall R.S. 7740 6.2 9.8 63 13.3 13.5 99
Larsen Creek 9000 6.0 8.8 68 15.0 14.4 104
Loomis Park 8240 9.8 14.4 68 15.5 17.2 90
New Fork Lake 8340 5.7 9.8 58 -M 10.9 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.7 11.1 69 13.0 14.2 92
Spring Creek Divide 9000 24.3 25.2 96 22.7 24.4 93
Triple Peak 8500 21.0 22.0 95 25.1 26.0 97
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Basin Index (%) 83 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.9 7.8 114 14.4 13.0 111
Buck Pasture 9632 14.3 -M * 17.1 -M *
EF Blacks Fork GS 9360 9.7 11.6 84 10.6 12.0 88
Hams Fork 7840 -M 8.4 * 11.8 11.3 104
Henrys Fork 10182 -M -M * 14.0 -M *
Hewinta 9500 9.9 9.4 105 15.4 14.3 108
Hickerson Park 9122 7.8 6.4 122 14.3 11.0 130
Hole-in-Rock 9168 7.1 6.3 113 11.4 10.7 107
Indian Creek 9425 22.3 24.8 90 20.6 20.2 102
Kelley R.S. 8180 14.7 14.4 102 18.1 16.9 107
Spirit Lk 10235 14.8 13.2 112 19.8 18.9 105
Steel Creek Park 10158 16.1 15.7 103 18.6 17.2 108
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Basin Index (%) 102 107
UPPER BEAR RIVER
Bear River RS 8777 7.3 5.6 130 14.8 12.7 117
Bug Lake 7987 19.8 18.6 106 23.5 18.8 125
Burts Miller Ranch 8000 4.5 1.7 265 12.6 8.6 147
Chalk Creek #1 9171 24.1 23.6 102 26.3 24.0 110
Giveout 6930 6.1 4.0 152 13.6 13.0 105
Hayden Fork 9130 13.6 13.8 99 23.8 21.8 109
Kelley R.S. 8180 14.7 14.4 102 18.1 16.9 107
Lily Lake 9133 12.7 12.4 102 16.4 16.0 102
Monte Cristo 8932 29.4 27.4 107 29.9 26.8 112
Salt River Summit 7640 13.1 11.3 116 15.4 16.8 92
Spring Creek Divide 9000 24.3 25.2 96 22.7 24.4 93
Trial Lake 9992 29.5 22.1 133 27.8 23.2 120
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Basin Index (%) 111 110
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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.
