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: MARCH 19 , 2025
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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 7040 17.5 16.1 109 18.3 18.3 100
Blind Bull Sum 8880 23.9 22.1 108 17.5 16.5 106
Cottonwood Creek 7710 23.6 19.8 119 26.0 22.6 115
East Rim Divide 8010 10.5 10.1 104 10.4 10.2 102
Grand Targhee 9260 36.5 37.0 99 25.9 27.6 94
Granite Creek 6770 17.3 15.6 111 16.8 16.9 99
Grassy Lake 7330 29.5 29.5 100 32.1 31.8 101
Gros Ventre Summit 8760 12.0 11.3 106 11.9 11.0 108
Gunsight Pass 9830 13.2 12.1 109 12.4 12.5 99
Lewis Lake Divide 7880 29.4 28.2 104 31.5 29.5 107
Loomis Park 8240 15.0 14.1 106 15.2 15.5 98
Phillips Bench 8160 24.2 23.4 103 23.8 24.0 99
Salt River Summit 7630 15.2 12.5 122 12.8 13.7 93
Snake River Station 6900 19.3 16.2 119 20.0 19.6 102
Somsen Ranch 6830 14.4 11.6 124 15.4 14.6 105
Spring Creek Divide 9020 24.2 22.4 108 23.2 21.7 107
Thumb Divide 7970 13.7 14.4 95 12.8 15.4 83
Togwotee Pass 9590 22.5 21.2 106 23.5 22.6 104
Triple Peak 8520 25.8 21.8 118 25.3 23.2 109
Two Ocean Plateau 9240 26.2 26.0 101 22.0 23.5 94
Willow Creek 8060 32.2 26.8 120 -M 29.4 *
Younts Peak 8340 13.9 13.4 104 13.1 13.0 101
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Basin Index (%) 108 102
MADISON HEADWATERS IN WYOMING
Black Bear 8160 31.9 35.6 90 31.2 33.2 94
Canyon 7870 11.5 -M * 12.0 -M *
Madison Plateau 7710 20.2 20.3 100 22.3 22.0 101
West Yellowstone 6680 10.2 10.3 99 11.4 13.0 88
Whiskey Creek 6790 14.6 14.6 100 18.3 17.6 104
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Basin Index (%) 95 97
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 18.7 19.8 94 17.4 18.2 96
Canyon 7870 11.5 -M * 12.0 -M *
Evening Star 9040 22.8 23.6 97 24.2 25.6 95
Fisher Creek 9110 26.0 28.7 91 27.0 28.8 94
Monument Peak 8740 16.1 18.6 87 18.6 19.0 98
Northeast Entrance 7420 9.8 9.8 100 11.2 11.9 94
Parker Peak 9420 21.7 19.0 114 20.8 18.2 114
Sylvan Lake 8440 17.0 18.2 93 19.3 20.4 95
Thumb Divide 7970 13.7 14.4 95 12.8 15.4 83
Two Ocean Plateau 9240 26.2 26.0 101 22.0 23.5 94
White Mill 8730 20.2 22.0 92 18.7 20.8 90
Wolverine 7650 11.8 10.6 111 13.8 11.0 125
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Basin Index (%) 97 97
WIND RIVER
Burroughs Creek 8760 11.3 -M * 14.4 -M *
Castle Creek 8410 6.3 6.9 91 7.1 7.8 91
Cold Springs 9640 7.6 6.4 119 8.0 7.8 103
Deer Park 9690 16.8 12.0 140 18.0 15.4 117
Hobbs Park 10080 13.8 12.0 115 13.7 10.9 126
Kirwin 9580 10.1 9.4 107 11.9 10.3 116
Little Warm 9370 10.3 8.9 116 12.1 10.8 112
South Pass 9040 14.4 13.0 111 15.7 13.2 119
St. Lawrence Alt 8610 5.6 -M * 8.5 -M *
Togwotee Pass 9590 22.5 21.2 106 23.5 22.6 104
Townsend Creek 8720 10.2 8.0 128 12.4 8.9 139
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Basin Index (%) 115 114
BIGHORN BASIN
Bald Mtn. 9360 18.5 16.5 112 15.4 14.0 110
Bear Trap Meadow 8200 5.7 5.9 97 5.4 7.2 75
Bone Springs Div 9340 13.4 14.2 94 10.2 13.2 77
Grave Springs 8560 7.8 7.7 101 8.9 8.4 106
Kirwin 9580 10.1 9.4 107 11.9 10.3 116
Marquette 8800 9.5 6.2 153 10.4 7.7 135
Middle Powder 7760 9.3 9.0 103 7.3 8.8 83
Owl Creek 8990 5.4 4.8 112 5.9 5.2 113
Powder River Pass 9480 6.7 9.8 68 8.5 11.0 77
Shell Creek 9570 10.6 13.1 81 9.7 11.8 82
Timber Creek 7910 5.8 4.1 141 6.6 6.6 100
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Basin Index (%) 102 96
SHOSHONE RIVER
Blackwater 9840 21.5 20.4 105 20.1 19.4 104
Evening Star 9040 22.8 23.6 97 24.2 25.6 95
Marquette 8800 9.5 6.2 153 10.4 7.7 135
Sylvan Lake 8440 17.0 18.2 93 19.3 20.4 95
Sylvan Road 7140 10.3 11.0 94 11.9 14.9 80
Younts Peak 8340 13.9 13.4 104 13.1 13.0 101
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Basin Index (%) 102 98
POWDER RIVER
Bear Trap Meadow 8200 5.7 5.9 97 5.4 7.2 75
Cloud Peak Reservoir 9830 9.8 13.0 75 10.1 11.4 89
Grave Springs 8560 7.8 7.7 101 8.9 8.4 106
Hansen Sawmill 8360 4.4 5.8 76 6.1 7.4 82
Middle Powder 7760 9.3 9.0 103 7.3 8.8 83
Powder River Pass 9480 6.7 9.8 68 8.5 11.0 77
Soldier Park 8680 3.1 5.9 53 5.6 8.0 70
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Basin Index (%) 82 83
TONGUE RIVER
Big Goose 8010 6.8 7.3 93 8.4 8.6 98
Bone Springs Div 9340 13.4 14.2 94 10.2 13.2 77
Burgess Junction 7900 10.3 9.4 110 11.2 10.2 110
Dome Lake 8890 8.9 10.0 89 6.8 10.8 63
Little Goose 8560 8.3 8.3 100 9.6 9.9 97
Sucker Creek 8840 11.1 10.8 103 12.5 12.0 104
Tie Creek 7050 8.1 4.7 172 10.9 9.2 118
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Basin Index (%) 103 94
BELLE FOURCHE
Blind Park 6900 4.5 7.1 63 7.8 9.8 80
Cole Canyon 5930 6.1 5.0 122 7.8 7.6 103
North Rapid Creek 6150 4.0 6.4 62 6.5 7.8 83
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Basin Index (%) 79 88
CHEYENNE RIVER BASIN
Blind Park 6900 4.5 7.1 63 7.8 9.8 80
North Rapid Creek 6150 4.0 6.4 62 6.5 7.8 83
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Basin Index (%) 63 81
UPPER N. PLATTE
Arapaho Ridge 10960 18.9 19.2 98 18.3 19.1 96
Blackhall Mtn 9830 26.5 26.7 99 27.4 26.0 105
Cinnabar Park 9670 16.3 18.1 90 19.3 21.0 92
Columbine 9170 24.2 21.2 114 24.6 21.6 114
Divide Peak 8700 16.2 17.4 93 18.2 18.9 96
Joe Wright 10140 20.4 18.3 111 25.2 23.0 110
Laprele Creek 8370 7.8 8.8 89 8.7 10.0 87
Med Bow 10500 36.2 -M * 30.4 -M *
Never Summer 10300 17.7 17.6 101 14.7 14.5 101
North French Creek 10150 28.0 24.3 115 26.8 23.1 116
Old Battle 9850 25.7 26.1 98 25.7 29.3 88
Rawah 9100 10.3 9.8 105 12.9 13.5 96
Sage Creek Basin 7830 10.9 11.8 92 11.3 11.6 97
Sand Lake 10080 25.5 23.1 110 24.4 21.6 113
South Brush Creek 8480 10.9 11.0 99 10.5 11.8 89
Tower 10610 39.4 38.8 102 36.4 35.8 102
Webber Springs 9250 17.7 19.7 90 20.2 21.9 92
Whiskey Park 8950 24.2 24.4 99 25.5 24.4 105
Willow Creek Pass 9520 11.6 11.4 102 11.7 12.0 98
Zirkel 9320 23.4 26.2 89 27.9 27.6 101
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Basin Index (%) 100 101
SWEETWATER
Deer Park 9690 16.8 12.0 140 18.0 15.4 117
Larsen Creek 8880 7.4 10.4 71 11.4 11.4 100
South Pass 9040 14.4 13.0 111 15.7 13.2 119
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Basin Index (%) 109 113
LOWER N. PLATTE
Casper Mtn. 7940 9.1 11.8 77 9.7 11.4 85
Laprele Creek 8370 7.8 8.8 89 8.7 10.0 87
Reno Hill 8410 10.7 11.7 91 12.5 12.0 104
Windy Peak 7900 6.3 6.8 93 6.7 8.4 80
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Basin Index (%) 87 90
LARAMIE RIVER
Brooklyn Lake 10250 21.5 18.4 117 21.6 18.7 116
Cinnabar Park 9670 16.3 18.1 90 19.3 21.0 92
Crow Creek 8320 3.1 6.5 48 6.8 9.3 73
Deadman Hill 10240 15.9 14.8 107 16.4 15.2 108
Rawah 9100 10.3 9.8 105 12.9 13.5 96
Roach 9710 12.4 13.7 91 15.2 16.1 94
Windy Peak 7900 6.3 6.8 93 6.7 8.4 80
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Basin Index (%) 97 97
S. PLATTE
Crow Creek 8320 3.1 6.5 48 6.8 9.3 73
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Basin Index (%) 48 73
LITTLE SNAKE RIVER
Battle Mountain 7460 10.4 11.0 95 14.1 13.2 107
Divide Peak 8700 16.2 17.4 93 18.2 18.9 96
Elk River 8710 14.9 16.6 90 17.6 17.0 104
Elkhead Divide 8780 15.1 -M * 16.7 -M *
Little Snake River 8930 23.0 24.0 96 28.2 28.4 99
Old Battle 9850 25.7 26.1 98 25.7 29.3 88
Sage Creek Basin 7830 10.9 11.8 92 11.3 11.6 97
Sandstone RS 8150 13.1 11.5 114 13.3 16.1 83
Whiskey Park 8950 24.2 24.4 99 25.5 24.4 105
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Basin Index (%) 97 97
UPPER GREEN RIVER
Big Sandy Opening 9100 10.3 11.8 87 10.4 11.2 93
Blind Bull Sum 8880 23.9 22.1 108 17.5 16.5 106
East Rim Divide 8010 10.5 10.1 104 10.4 10.2 102
Elkhart Park G.S. 9410 11.4 11.1 103 11.3 11.2 101
Gros Ventre Summit 8760 12.0 11.3 106 11.9 11.0 108
Gunsight Pass 9830 13.2 12.1 109 12.4 12.5 99
Indian Creek 9400 23.8 20.7 115 20.5 17.4 118
Kendall R.S. 7790 13.2 11.2 118 13.2 12.2 108
Larsen Creek 8880 7.4 10.4 71 11.4 11.4 100
Loomis Park 8240 15.0 14.1 106 15.2 15.5 98
New Fork Lake 8380 10.0 9.6 104 -M 9.5 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 13.5 12.0 112 14.7 12.7 116
Spring Creek Divide 9020 24.2 22.4 108 23.2 21.7 107
Triple Peak 8520 25.8 21.8 118 25.3 23.2 109
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Basin Index (%) 107 106
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.5 7.8 135 12.4 10.5 118
Buck Pasture 9620 13.4 -M * 17.3 -M *
EF Blacks Fork GS 9360 9.6 10.6 91 11.4 9.8 116
Hams Fork 7870 11.6 10.2 114 11.8 9.5 124
Henrys Fork 10180 -M -M * 12.2 -M *
Hewinta 9510 10.0 8.9 112 13.6 11.8 115
Hickerson Park 9130 6.7 7.0 96 8.9 8.8 101
Hole-in-Rock 9170 5.9 6.6 89 8.9 8.6 103
Indian Creek 9400 23.8 20.7 115 20.5 17.4 118
Kelley R.S. 8240 16.2 13.2 123 16.6 14.5 114
Spirit Lk 10240 12.2 10.8 113 13.1 14.4 91
Steel Creek Park 10140 15.0 12.8 117 16.2 13.8 117
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Basin Index (%) 112 112
UPPER BEAR RIVER
Bear River RS 8510 9.0 8.4 107 12.1 10.1 120
Bug Lake 7980 18.3 16.6 110 18.0 15.6 115
Burts Miller Ranch 7900 6.2 4.9 127 10.8 6.6 164
Chalk Creek #1 9160 18.5 20.0 92 21.0 20.6 102
Giveout 6940 9.1 7.8 117 11.3 10.4 109
Hayden Fork 9160 13.3 13.3 100 19.7 17.6 112
Kelley R.S. 8240 16.2 13.2 123 16.6 14.5 114
Lily Lake 9130 11.9 11.2 106 13.9 13.6 102
Monte Cristo 8930 24.6 24.0 102 23.0 21.9 105
Salt River Summit 7630 15.2 12.5 122 12.8 13.7 93
Spring Creek Divide 9020 24.2 22.4 108 23.2 21.7 107
Trial Lake 9970 23.4 19.6 119 22.7 19.8 115
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Basin Index (%) 109 110
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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.
