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 4 , 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 16.0 16.6 96 20.5 19.8 104
Blind Bull Sum 8650 24.3 23.6 103 16.7 17.5 95
Cottonwood Creek 7670 20.9 21.4 98 25.6 24.8 103
East Rim Divide 7930 9.1 10.4 88 11.1 11.0 101
Grand Targhee 9260 38.3 42.0 91 25.9 30.0 86
Granite Creek 6770 15.8 15.3 103 16.6 17.8 93
Grassy Lake 7265 27.4 32.2 85 33.9 34.0 100
Gros Ventre Summit 8750 11.7 12.8 91 13.5 12.0 112
Gunsight Pass 9820 13.1 12.8 102 14.7 13.4 110
Lewis Lake Divide 7850 31.5 30.2 104 35.0 32.2 109
Loomis Park 8240 12.0 15.4 78 15.2 16.6 92
Phillips Bench 8200 25.1 26.0 97 28.0 26.2 107
Salt River Summit 7640 16.1 13.4 120 15.2 15.8 96
Snake River Station 6920 16.1 16.7 96 22.7 22.0 103
Somsen Ranch 6800 17.5 10.8 162 21.3 16.4 130
Spring Creek Divide 9000 -M 24.6 * -M 23.2 *
Thumb Divide 7980 17.1 16.2 106 18.0 17.2 105
Togwotee Pass 9580 19.8 23.2 85 19.5 24.2 81
Triple Peak 8500 24.3 22.8 107 -M 24.6 *
Two Ocean Plateau 9240 27.2 28.4 96 26.1 25.4 103
Willow Creek 8080 35.1 29.6 119 34.4 32.3 107
Younts Peak 8350 14.0 14.2 99 15.2 14.6 104
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Basin Index (%) 100 101
MADISON HEADWATERS IN WYOMING
Black Bear 8170 -M 37.8 * 37.3 36.6 102
Canyon 7870 10.9 -M * 13.7 -M *
Madison Plateau 7750 20.5 22.4 92 23.4 24.3 96
West Yellowstone 6700 8.9 10.0 89 13.6 13.8 99
Whiskey Creek 6800 13.8 15.4 90 19.9 19.2 104
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Basin Index (%) 90 100
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 14.8 21.2 70 14.4 19.6 73
Canyon 7870 10.9 -M * 13.7 -M *
Evening Star 9200 20.6 24.7 83 26.0 27.2 96
Fisher Creek 9100 22.5 32.2 70 25.2 31.8 79
Monument Peak 8850 14.4 20.2 71 17.7 20.9 85
Northeast Entrance 7350 6.0 9.0 67 10.2 12.7 80
Parker Peak 9400 19.7 20.3 97 21.4 19.5 110
Sylvan Lake 8420 15.4 19.4 79 22.3 22.6 99
Thumb Divide 7980 17.1 16.2 106 18.0 17.2 105
Two Ocean Plateau 9240 27.2 28.4 96 26.1 25.4 103
White Mill 8700 17.0 23.2 73 17.8 22.2 80
Wolverine 7650 9.1 10.6 86 13.1 12.4 106
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Basin Index (%) 82 92
WIND RIVER
Burroughs Creek 8750 11.0 -M * 11.8 -M *
Castle Creek 8400 6.8 6.3 108 8.2 8.2 100
Cold Springs 9630 8.6 7.0 123 11.6 9.0 129
Deer Park 9700 18.7 14.7 127 21.2 17.5 121
Hobbs Park 10100 16.4 14.2 115 16.9 13.2 128
Kirwin 9550 13.2 10.5 126 15.8 11.7 135
Little Warm 9370 10.2 10.0 102 13.4 11.6 116
South Pass 9040 15.9 14.6 109 17.9 15.4 116
St. Lawrence Alt 8620 6.6 -M * 10.4 -M *
Togwotee Pass 9580 19.8 23.2 85 19.5 24.2 81
Townsend Creek 8700 10.4 9.2 113 14.1 10.8 131
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Basin Index (%) 109 114
BIGHORN BASIN
Bald Mtn. 9380 12.6 19.2 66 11.9 15.7 76
Bear Trap Meadow 8200 4.4 5.8 76 8.1 8.2 99
Bone Springs Div 9350 12.8 16.8 76 11.6 15.1 77
Grave Springs 8550 5.0 8.2 61 7.4 9.0 82
Kirwin 9550 13.2 10.5 126 15.8 11.7 135
Marquette 8760 11.6 7.2 161 14.8 9.0 164
Middle Powder 7760 6.1 10.8 56 7.8 9.6 81
Owl Creek 8975 5.5 5.6 98 7.3 6.0 122
Powder River Pass 9480 6.1 10.4 59 10.0 12.3 81
Shell Creek 9580 11.5 15.0 77 12.2 13.6 90
Timber Creek 7950 8.1 4.8 169 12.1 7.8 155
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Basin Index (%) 85 101
SHOSHONE RIVER
Blackwater 9780 22.3 22.4 100 23.5 21.5 109
Evening Star 9200 20.6 24.7 83 26.0 27.2 96
Marquette 8760 11.6 7.2 161 14.8 9.0 164
Sylvan Lake 8420 15.4 19.4 79 22.3 22.6 99
Sylvan Road 7120 6.7 10.6 63 15.0 16.0 94
Younts Peak 8350 14.0 14.2 99 15.2 14.6 104
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Basin Index (%) 92 105
POWDER RIVER
Bear Trap Meadow 8200 4.4 5.8 76 8.1 8.2 99
Cloud Peak Reservoir 9860 11.4 14.4 79 13.2 13.2 100
Grave Springs 8550 5.0 8.2 61 7.4 9.0 82
Hansen Sawmill 8360 5.2 6.2 84 8.4 8.2 102
Middle Powder 7760 6.1 10.8 56 7.8 9.6 81
Powder River Pass 9480 6.1 10.4 59 10.0 12.3 81
Soldier Park 8720 4.3 7.7 56 9.4 9.1 103
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Basin Index (%) 67 92
TONGUE RIVER
Big Goose 7990 5.8 8.6 67 9.9 9.8 101
Bone Springs Div 9350 12.8 16.8 76 11.6 15.1 77
Burgess Junction 7880 7.4 10.6 70 10.8 11.5 94
Dome Lake 8880 -M 11.6 * 10.4 12.6 83
Little Goose 8870 7.6 9.5 80 11.3 11.8 96
Sucker Creek 8880 9.2 11.8 78 12.9 13.6 95
Tie Creek 6870 2.0 4.8 42 11.5 10.4 111
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Basin Index (%) 72 92
BELLE FOURCHE
Blind Park 6890 .0 7.1 0 -M 10.6 *
Cole Canyon 5910 1.9 5.4 35 5.8 9.0 64
North Rapid Creek 6130 4.4 6.4 69 6.8 8.6 79
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Basin Index (%) 33 72
CHEYENNE RIVER BASIN
Blind Park 6890 .0 7.1 0 -M 10.6 *
North Rapid Creek 6130 4.4 6.4 69 6.8 8.6 79
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Basin Index (%) 33 79
UPPER N. PLATTE
Arapaho Ridge 10976 21.4 21.8 98 21.1 21.3 99
Blackhall Mtn 9839 31.1 30.4 102 34.1 29.1 117
Cinnabar Park 9707 20.1 20.6 98 22.5 23.4 96
Columbine 9167 26.8 21.8 123 25.2 23.6 107
Divide Peak 8730 21.7 19.6 111 24.2 21.2 114
Joe Wright 10158 18.8 20.1 94 22.9 25.6 89
Laprele Creek 8390 7.0 9.6 73 10.4 11.6 90
Med Bow 10512 37.3 -M * 32.2 -M *
Never Summer 10323 18.9 20.4 93 14.4 16.6 87
North French Creek 10153 26.8 28.3 95 26.4 26.2 101
Old Battle 9860 32.7 31.0 105 33.2 34.2 97
Rawah 9069 12.1 10.6 114 15.9 15.3 104
Sage Creek Basin 7850 15.9 12.6 126 15.5 12.8 121
Sand Lake 10098 29.5 27.0 109 28.2 24.6 115
South Brush Creek 8495 10.6 11.8 90 12.1 13.6 89
Tower 10620 40.5 42.8 95 37.3 38.8 96
Webber Springs 9260 23.8 22.2 107 25.9 25.2 103
Whiskey Park 9020 32.0 27.1 118 29.5 27.2 108
Willow Creek Pass 9523 14.1 13.0 108 14.8 13.4 110
Zirkel 9338 26.2 27.6 95 28.3 30.4 93
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Basin Index (%) 103 102
SWEETWATER
Deer Park 9700 18.7 14.7 127 21.2 17.5 121
Larsen Creek 9000 9.5 10.1 94 14.8 13.4 110
South Pass 9040 15.9 14.6 109 17.9 15.4 116
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Basin Index (%) 112 116
LOWER N. PLATTE
Casper Mtn. 7920 9.5 13.0 73 13.7 13.6 101
Laprele Creek 8390 7.0 9.6 73 10.4 11.6 90
Reno Hill 8430 9.5 14.0 68 13.2 14.5 91
Windy Peak 7915 8.4 8.0 105 9.9 10.2 97
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Basin Index (%) 77 95
LARAMIE RIVER
Brooklyn Lake 10250 23.3 21.4 109 24.7 21.3 116
Cinnabar Park 9707 20.1 20.6 98 22.5 23.4 96
Crow Creek 8335 5.5 6.2 89 10.0 10.5 95
Deadman Hill 10239 19.5 15.8 123 18.1 17.6 103
Rawah 9069 12.1 10.6 114 15.9 15.3 104
Roach 9740 14.9 15.4 97 17.4 18.6 94
Windy Peak 7915 8.4 8.0 105 9.9 10.2 97
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Basin Index (%) 106 101
S. PLATTE
Crow Creek 8335 5.5 6.2 89 10.0 10.5 95
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Basin Index (%) 89 95
LITTLE SNAKE RIVER
Battle Mountain 7498 12.0 10.5 114 18.5 14.6 127
Divide Peak 8730 21.7 19.6 111 24.2 21.2 114
Elk River 8739 19.3 18.2 106 19.7 18.9 104
Elkhead Divide 8800 23.7 -M * 23.8 -M *
Little Snake River 8928 29.6 26.5 112 33.0 31.5 105
Old Battle 9860 32.7 31.0 105 33.2 34.2 97
Sage Creek Basin 7850 15.9 12.6 126 15.5 12.8 121
Sandstone RS 8152 18.3 12.8 143 18.1 17.2 105
Whiskey Park 9020 32.0 27.1 118 29.5 27.2 108
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Basin Index (%) 115 108
UPPER GREEN RIVER
Big Sandy Opening 9080 14.1 12.9 109 15.0 12.7 118
Blind Bull Sum 8650 24.3 23.6 103 16.7 17.5 95
East Rim Divide 7930 9.1 10.4 88 11.1 11.0 101
Elkhart Park G.S. 9400 11.6 12.4 94 12.6 12.6 100
Gros Ventre Summit 8750 11.7 12.8 91 13.5 12.0 112
Gunsight Pass 9820 13.1 12.8 102 14.7 13.4 110
Indian Creek 9425 23.8 23.4 102 20.4 19.4 105
Kendall R.S. 7740 9.0 11.2 80 12.9 13.0 99
Larsen Creek 9000 9.5 10.1 94 14.8 13.4 110
Loomis Park 8240 12.0 15.4 78 15.2 16.6 92
New Fork Lake 8340 8.6 10.5 82 -M 10.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 10.4 12.6 83 12.7 13.8 92
Spring Creek Divide 9000 -M 24.6 * -M 23.2 *
Triple Peak 8500 24.3 22.8 107 -M 24.6 *
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Basin Index (%) 95 103
LOWER GREEN RIVER
Blacks Fork Jct 8869 11.6 9.0 129 14.0 12.2 115
Buck Pasture 9632 16.2 -M * 16.1 -M *
EF Blacks Fork GS 9360 11.5 11.4 101 10.2 10.8 94
Hams Fork 7840 -M 11.1 * 11.5 11.0 105
Henrys Fork 10182 -M -M * 13.4 -M *
Hewinta 9500 13.1 10.8 121 14.9 13.4 111
Hickerson Park 9122 11.5 7.4 155 13.7 10.2 134
Hole-in-Rock 9168 9.3 6.9 135 11.1 9.8 113
Indian Creek 9425 23.8 23.4 102 20.4 19.4 105
Kelley R.S. 8180 17.0 14.9 114 17.8 15.9 112
Spirit Lk 10235 15.5 13.2 117 19.0 16.8 113
Steel Creek Park 10158 15.8 14.2 111 17.8 16.2 110
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Basin Index (%) 116 111
UPPER BEAR RIVER
Bear River RS 8777 12.8 9.2 139 14.6 11.8 124
Bug Lake 7987 22.8 18.6 123 23.1 17.8 130
Burts Miller Ranch 8000 9.3 5.7 163 12.6 7.7 164
Chalk Creek #1 9171 25.0 22.8 110 25.5 22.4 114
Giveout 6930 11.4 8.0 142 13.2 11.6 114
Hayden Fork 9130 19.4 15.0 129 23.1 20.2 114
Kelley R.S. 8180 17.0 14.9 114 17.8 15.9 112
Lily Lake 9133 14.3 12.4 115 15.9 14.7 108
Monte Cristo 8932 30.3 27.2 111 28.5 26.0 110
Salt River Summit 7640 16.1 13.4 120 15.2 15.8 96
Spring Creek Divide 9000 -M 24.6 * -M 23.2 *
Trial Lake 9992 28.9 21.4 135 26.8 22.2 121
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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.