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 MONDAY: MARCH 18 , 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 15.1 16.0 94 18.9 18.2 104
Blind Bull Sum 8650 21.9 21.8 100 15.3 16.2 94
Cottonwood Creek 7670 20.3 19.8 103 23.7 22.4 106
East Rim Divide 7930 8.6 10.0 86 9.8 10.1 97
Grand Targhee 9260 34.3 36.6 94 24.9 27.0 92
Granite Creek 6770 13.8 15.6 88 14.7 16.8 88
Grassy Lake 7265 26.4 29.2 90 32.1 31.8 101
Gros Ventre Summit 8750 10.7 11.3 95 11.9 11.0 108
Gunsight Pass 9820 11.7 11.9 98 12.9 12.4 104
Lewis Lake Divide 7850 28.9 27.9 104 32.8 29.4 112
Loomis Park 8240 11.7 13.8 85 13.3 15.4 86
Phillips Bench 8200 23.0 23.4 98 25.5 24.0 106
Salt River Summit 7640 14.5 12.2 119 13.7 13.7 100
Snake River Station 6920 15.8 16.1 98 21.6 19.6 110
Somsen Ranch 6800 16.7 11.6 144 19.8 14.6 136
Spring Creek Divide 9000 -M 22.3 * -M 21.6 *
Thumb Divide 7980 15.8 14.4 110 16.5 15.4 107
Togwotee Pass 9580 17.8 21.1 84 17.3 22.4 77
Triple Peak 8500 21.8 21.7 100 22.4 23.2 97
Two Ocean Plateau 9240 24.6 26.0 95 23.6 23.4 101
Willow Creek 8080 31.2 26.6 117 31.4 29.1 108
Younts Peak 8350 13.0 13.2 98 13.8 13.0 106
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Basin Index (%) 99 102
MADISON HEADWATERS IN WYOMING
Black Bear 8170 30.8 35.2 88 34.4 33.0 104
Canyon 7870 9.7 -M * 12.5 -M *
Madison Plateau 7750 18.6 20.3 92 21.4 22.0 97
West Yellowstone 6700 8.4 10.2 82 12.5 13.0 96
Whiskey Creek 6800 12.2 14.6 84 18.1 17.6 103
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Basin Index (%) 87 101
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 13.7 19.6 70 13.2 18.2 73
Canyon 7870 9.7 -M * 12.5 -M *
Evening Star 9200 19.3 23.4 82 24.4 25.6 95
Fisher Creek 9100 20.0 28.4 70 22.5 28.7 78
Monument Peak 8850 12.9 18.2 71 15.9 19.0 84
Northeast Entrance 7350 5.3 9.7 55 9.0 11.8 76
Parker Peak 9400 18.4 18.9 97 19.8 18.2 109
Sylvan Lake 8420 14.3 18.1 79 20.6 20.4 101
Thumb Divide 7980 15.8 14.4 110 16.5 15.4 107
Two Ocean Plateau 9240 24.6 26.0 95 23.6 23.4 101
White Mill 8700 14.9 21.6 69 15.8 20.8 76
Wolverine 7650 9.5 10.9 87 12.4 11.0 113
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Basin Index (%) 81 91
WIND RIVER
Burroughs Creek 8750 11.2 -M * 10.8 -M *
Castle Creek 8400 6.3 6.9 91 7.2 7.8 92
Cold Springs 9630 8.0 6.5 123 10.7 7.6 141
Deer Park 9700 15.6 12.0 130 17.8 15.0 119
Hobbs Park 10100 15.4 11.8 131 15.7 10.6 148
Kirwin 9550 12.2 9.4 130 14.7 10.1 146
Little Warm 9370 9.2 8.9 103 11.9 10.8 110
South Pass 9040 13.6 12.8 106 15.5 12.8 121
St. Lawrence Alt 8620 6.1 -M * 9.4 -M *
Togwotee Pass 9580 17.8 21.1 84 17.3 22.4 77
Townsend Creek 8700 9.3 8.0 116 12.8 8.9 144
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Basin Index (%) 110 117
BIGHORN BASIN
Bald Mtn. 9380 11.3 16.5 68 10.7 14.0 76
Bear Trap Meadow 8200 3.8 5.6 68 6.5 7.0 93
Bone Springs Div 9350 10.6 14.2 75 10.4 13.1 79
Grave Springs 8550 3.8 7.6 50 6.2 8.2 76
Kirwin 9550 12.2 9.4 130 14.7 10.1 146
Marquette 8760 10.3 6.1 169 13.3 7.6 175
Middle Powder 7760 -M 9.0 * 6.6 8.7 76
Owl Creek 8975 5.4 4.8 112 6.6 5.1 129
Powder River Pass 9480 5.7 9.7 59 9.1 10.8 84
Shell Creek 9580 10.3 13.0 79 11.0 11.8 93
Timber Creek 7950 7.2 4.1 176 11.3 6.4 177
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Basin Index (%) 89 104
SHOSHONE RIVER
Blackwater 9780 19.9 20.3 98 21.1 19.3 109
Evening Star 9200 19.3 23.4 82 24.4 25.6 95
Marquette 8760 10.3 6.1 169 13.3 7.6 175
Sylvan Lake 8420 14.3 18.1 79 20.6 20.4 101
Sylvan Road 7120 7.8 10.8 72 14.5 14.9 97
Younts Peak 8350 13.0 13.2 98 13.8 13.0 106
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Basin Index (%) 92 107
POWDER RIVER
Bear Trap Meadow 8200 3.8 5.6 68 6.5 7.0 93
Cloud Peak Reservoir 9860 10.6 12.9 82 12.3 11.0 112
Grave Springs 8550 3.8 7.6 50 6.2 8.2 76
Hansen Sawmill 8360 4.6 5.8 79 7.4 7.4 100
Middle Powder 7760 -M 9.0 * 6.6 8.7 76
Powder River Pass 9480 5.7 9.7 59 9.1 10.8 84
Soldier Park 8720 3.7 5.9 63 8.5 8.0 106
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Basin Index (%) 68 93
TONGUE RIVER
Big Goose 7990 5.2 7.2 72 9.2 8.6 107
Bone Springs Div 9350 10.6 14.2 75 10.4 13.1 79
Burgess Junction 7880 6.2 9.4 66 9.7 10.2 95
Dome Lake 8880 -M 10.0 * 9.2 10.6 87
Little Goose 8870 7.2 8.3 87 10.4 9.9 105
Sucker Creek 8880 8.5 10.6 80 11.9 11.9 100
Tie Creek 6870 -M 4.6 * 10.5 9.1 115
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Basin Index (%) 76 97
BELLE FOURCHE
Blind Park 6890 2.3 7.0 33 -M 9.6 *
Cole Canyon 5910 2.7 5.0 54 4.5 7.6 59
North Rapid Creek 6130 5.0 6.2 81 6.1 7.8 78
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Basin Index (%) 55 69
CHEYENNE RIVER BASIN
Blind Park 6890 2.3 7.0 33 -M 9.6 *
North Rapid Creek 6130 5.0 6.2 81 6.1 7.8 78
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Basin Index (%) 55 78
UPPER N. PLATTE
Arapaho Ridge 10976 19.3 19.2 101 18.9 19.1 99
Blackhall Mtn 9839 30.4 26.4 115 31.0 25.8 120
Cinnabar Park 9707 18.7 18.1 103 20.7 21.0 99
Columbine 9167 24.9 20.8 120 23.2 21.2 109
Divide Peak 8730 19.1 17.0 112 22.0 18.4 120
Joe Wright 10158 17.6 18.2 97 21.5 22.8 94
Laprele Creek 8390 6.8 8.4 81 9.9 9.9 100
Med Bow 10512 33.5 -M * 29.4 -M *
Never Summer 10323 16.3 17.6 93 12.5 14.5 86
North French Creek 10153 24.5 24.0 102 23.9 22.8 105
Old Battle 9860 28.6 26.0 110 29.2 29.1 100
Rawah 9069 11.4 9.6 119 14.4 13.2 109
Sage Creek Basin 7850 15.3 12.0 128 14.0 11.4 123
Sand Lake 10098 26.6 22.6 118 25.6 21.0 122
South Brush Creek 8495 9.9 10.8 92 10.7 11.7 91
Tower 10620 37.1 38.4 97 34.4 35.5 97
Webber Springs 9260 21.4 19.4 110 22.9 21.8 105
Whiskey Park 9020 29.3 24.3 121 27.1 24.3 112
Willow Creek Pass 9523 12.4 11.2 111 13.3 11.9 112
Zirkel 9338 24.6 26.0 95 25.7 27.6 93
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Basin Index (%) 107 105
SWEETWATER
Deer Park 9700 15.6 12.0 130 17.8 15.0 119
Larsen Creek 9000 7.9 10.5 75 11.8 11.4 104
South Pass 9040 13.6 12.8 106 15.5 12.8 121
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Basin Index (%) 105 115
LOWER N. PLATTE
Casper Mtn. 7920 8.8 11.5 77 12.7 11.2 113
Laprele Creek 8390 6.8 8.4 81 9.9 9.9 100
Reno Hill 8430 8.6 11.6 74 12.4 12.0 103
Windy Peak 7915 7.9 6.8 116 9.2 8.3 111
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Basin Index (%) 84 107
LARAMIE RIVER
Brooklyn Lake 10250 22.6 17.8 127 22.9 18.4 124
Cinnabar Park 9707 18.7 18.1 103 20.7 21.0 99
Crow Creek 8335 4.8 6.6 73 9.0 9.3 97
Deadman Hill 10239 17.5 14.6 120 16.4 15.2 108
Rawah 9069 11.4 9.6 119 14.4 13.2 109
Roach 9740 12.9 13.6 95 15.2 15.8 96
Windy Peak 7915 7.9 6.8 116 9.2 8.3 111
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Basin Index (%) 110 107
S. PLATTE
Crow Creek 8335 4.8 6.6 73 9.0 9.3 97
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Basin Index (%) 73 97
LITTLE SNAKE RIVER
Battle Mountain 7498 11.9 11.1 107 17.3 13.1 132
Divide Peak 8730 19.1 17.0 112 22.0 18.4 120
Elk River 8739 17.8 16.6 107 17.3 16.8 103
Elkhead Divide 8800 21.0 -M * 21.5 -M *
Little Snake River 8928 27.2 23.9 114 30.0 28.2 106
Old Battle 9860 28.6 26.0 110 29.2 29.1 100
Sage Creek Basin 7850 15.3 12.0 128 14.0 11.4 123
Sandstone RS 8152 18.0 11.4 158 16.4 15.9 103
Whiskey Park 9020 29.3 24.3 121 27.1 24.3 112
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Basin Index (%) 117 110
UPPER GREEN RIVER
Big Sandy Opening 9080 10.6 11.7 91 11.5 11.2 103
Blind Bull Sum 8650 21.9 21.8 100 15.3 16.2 94
East Rim Divide 7930 8.6 10.0 86 9.8 10.1 97
Elkhart Park G.S. 9400 8.9 11.1 80 9.9 11.2 88
Gros Ventre Summit 8750 10.7 11.3 95 11.9 11.0 108
Gunsight Pass 9820 11.7 11.9 98 12.9 12.4 104
Indian Creek 9425 20.6 20.6 100 18.0 17.4 103
Kendall R.S. 7740 9.1 11.0 83 11.7 12.1 97
Larsen Creek 9000 7.9 10.5 75 11.8 11.4 104
Loomis Park 8240 11.7 13.8 85 13.3 15.4 86
New Fork Lake 8340 8.0 9.6 83 5.8 9.5 61
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 9.1 12.0 76 11.2 12.6 89
Spring Creek Divide 9000 -M 22.3 * -M 21.6 *
Triple Peak 8500 21.8 21.7 100 22.4 23.2 97
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Basin Index (%) 91 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 11.2 7.8 144 13.2 10.5 126
Buck Pasture 9632 14.2 -M * 14.4 -M *
EF Blacks Fork GS 9360 8.1 10.4 78 9.4 9.8 96
Hams Fork 7840 -M 10.2 * 10.3 9.4 110
Henrys Fork 10182 -M -M * 12.2 -M *
Hewinta 9500 12.0 8.6 140 14.1 11.4 124
Hickerson Park 9122 10.9 6.8 160 13.0 8.8 148
Hole-in-Rock 9168 8.6 6.4 134 10.0 8.5 118
Indian Creek 9425 20.6 20.6 100 18.0 17.4 103
Kelley R.S. 8180 15.1 13.1 115 15.7 14.4 109
Spirit Lk 10235 13.7 10.4 132 17.0 14.4 118
Steel Creek Park 10158 14.3 12.8 112 16.4 13.2 124
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Basin Index (%) 118 116
UPPER BEAR RIVER
Bear River RS 8777 11.7 8.4 139 13.2 10.1 131
Bug Lake 7987 21.9 16.5 133 21.3 15.5 137
Burts Miller Ranch 8000 9.0 4.9 184 11.8 6.6 179
Chalk Creek #1 9171 21.0 20.0 105 22.2 20.5 108
Giveout 6930 10.9 8.0 136 11.9 10.4 114
Hayden Fork 9130 16.9 13.6 124 20.5 17.5 117
Kelley R.S. 8180 15.1 13.1 115 15.7 14.4 109
Lily Lake 9133 12.8 11.2 114 14.5 13.6 107
Monte Cristo 8932 27.1 23.8 114 26.0 21.9 119
Salt River Summit 7640 14.5 12.2 119 13.7 13.7 100
Spring Creek Divide 9000 -M 22.3 * -M 21.6 *
Trial Lake 9992 23.3 19.6 119 23.0 19.6 117
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Basin Index (%) 122 118
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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.