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 TUESDAY: APRIL 15 , 2025
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7040 15.3 14.8 103 20.9 20.9 100
Blind Bull Sum 8880 26.3 24.8 106 18.7 17.8 105
Cottonwood Creek 7710 22.2 20.4 109 28.5 26.2 109
East Rim Divide 8010 6.5 9.7 67 11.5 11.5 100
Grand Targhee 9260 39.3 45.9 86 30.5 33.8 90
Granite Creek 6770 15.2 13.2 115 18.3 19.1 96
Grassy Lake 7330 29.2 32.4 90 35.2 36.3 97
Gros Ventre Summit 8760 11.7 12.9 91 13.3 12.8 104
Gunsight Pass 9830 12.9 13.0 99 13.6 14.4 94
Lewis Lake Divide 7880 31.5 32.2 98 35.7 33.9 105
Loomis Park 8240 12.5 14.6 86 16.8 17.2 98
Phillips Bench 8160 24.6 26.2 94 27.0 27.2 99
Salt River Summit 7630 12.3 11.8 104 14.0 16.4 85
Snake River Station 6900 15.8 15.0 105 22.1 23.2 95
Somsen Ranch 6830 9.2 9.2 100 16.7 17.3 97
Spring Creek Divide 9020 27.5 25.2 109 25.6 24.4 105
Thumb Divide 7970 13.9 16.0 87 15.1 18.6 81
Togwotee Pass 9590 23.9 24.0 100 25.8 25.2 102
Triple Peak 8520 27.6 22.1 125 27.5 25.7 107
Two Ocean Plateau 9240 29.9 31.2 96 25.2 27.5 92
Willow Creek 8060 32.8 28.1 117 36.4 34.4 106
Younts Peak 8340 13.5 14.6 92 14.7 15.6 94
----- -----
Basin Index (%) 99 99
MADISON HEADWATERS IN WYOMING
Black Bear 8160 34.0 39.0 87 35.4 37.9 93
Canyon 7870 12.7 -M * 14.3 -M *
Madison Plateau 7710 23.1 23.0 100 25.8 25.3 102
West Yellowstone 6680 8.1 7.7 105 13.6 14.3 95
Whiskey Creek 6790 15.4 15.1 102 21.4 20.8 103
----- -----
Basin Index (%) 95 98
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 23.0 22.9 100 21.3 20.9 102
Canyon 7870 12.7 -M * 14.3 -M *
Evening Star 9040 26.5 25.9 102 28.7 29.0 99
Fisher Creek 9110 30.8 34.8 89 32.3 34.5 94
Monument Peak 8740 19.3 21.6 89 22.1 22.9 97
Northeast Entrance 7420 7.7 8.0 96 13.8 13.4 103
Parker Peak 9420 26.0 22.4 116 24.0 20.8 115
Sylvan Lake 8440 16.8 19.8 85 22.2 24.2 92
Thumb Divide 7970 13.9 16.0 87 15.1 18.6 81
Two Ocean Plateau 9240 29.9 31.2 96 25.2 27.5 92
White Mill 8730 25.0 25.1 100 22.8 23.4 97
Wolverine 7650 10.2 8.4 121 15.2 12.8 119
----- -----
Basin Index (%) 97 98
WIND RIVER
Burroughs Creek 8760 9.7 -M * 16.5 -M *
Castle Creek 8410 3.6 5.6 64 8.1 9.0 90
Cold Springs 9640 4.3 6.7 64 8.8 9.8 90
Deer Park 9690 15.9 15.4 103 19.7 19.3 102
Hobbs Park 10080 14.2 15.5 92 14.8 14.3 103
Kirwin 9580 11.1 11.1 100 14.1 12.6 112
Little Warm 9370 9.5 10.2 93 13.1 12.2 107
South Pass 9040 13.4 15.8 85 16.8 16.5 102
St. Lawrence Alt 8610 1.2 -M * 9.6 -M *
Togwotee Pass 9590 23.9 24.0 100 25.8 25.2 102
Townsend Creek 8720 9.6 9.6 100 13.2 12.8 103
----- -----
Basin Index (%) 93 102
BIGHORN BASIN
Bald Mtn. 9360 21.2 19.6 108 17.2 16.6 104
Bear Trap Meadow 8200 2.2 5.2 42 6.9 9.6 72
Bone Springs Div 9340 16.5 18.2 91 12.0 16.5 73
Grave Springs 8560 6.8 8.6 79 10.2 10.7 95
Kirwin 9580 11.1 11.1 100 14.1 12.6 112
Marquette 8800 8.8 7.8 113 11.7 10.0 117
Middle Powder 7760 8.9 11.8 75 8.7 10.2 85
Owl Creek 8990 2.6 5.2 50 7.2 6.7 107
Powder River Pass 9480 6.4 10.4 62 10.6 13.6 78
Shell Creek 9570 13.2 16.0 82 12.2 14.4 85
Timber Creek 7910 5.7 5.1 112 8.6 8.6 100
----- -----
Basin Index (%) 87 92
SHOSHONE RIVER
Blackwater 9840 25.2 24.4 103 23.7 23.4 101
Evening Star 9040 26.5 25.9 102 28.7 29.0 99
Marquette 8800 8.8 7.8 113 11.7 10.0 117
Sylvan Lake 8440 16.8 19.8 85 22.2 24.2 92
Sylvan Road 7140 2.6 10.3 25 14.0 16.8 83
Younts Peak 8340 13.5 14.6 92 14.7 15.6 94
----- -----
Basin Index (%) 91 97
POWDER RIVER
Bear Trap Meadow 8200 2.2 5.2 42 6.9 9.6 72
Cloud Peak Reservoir 9830 11.6 15.3 76 12.3 14.5 85
Grave Springs 8560 6.8 8.6 79 10.2 10.7 95
Hansen Sawmill 8360 3.9 6.2 63 7.7 9.2 84
Middle Powder 7760 8.9 11.8 75 8.7 10.2 85
Powder River Pass 9480 6.4 10.4 62 10.6 13.6 78
Soldier Park 8680 1.3 6.4 20 7.1 10.4 68
----- -----
Basin Index (%) 64 81
TONGUE RIVER
Big Goose 8010 7.5 9.0 83 10.3 10.8 95
Bone Springs Div 9340 16.5 18.2 91 12.0 16.5 73
Burgess Junction 7900 11.6 11.5 101 12.5 13.0 96
Dome Lake 8890 10.8 12.1 89 11.2 13.8 81
Little Goose 8560 8.9 10.6 84 12.4 13.0 95
Sucker Creek 8840 11.4 13.0 88 14.7 14.9 99
Tie Creek 7050 5.2 4.4 118 12.1 11.8 103
----- -----
Basin Index (%) 91 91
BELLE FOURCHE
Blind Park 6900 .2 4.8 4 9.7 11.9 82
Cole Canyon 5930 2.5 3.4 74 9.9 9.6 103
North Rapid Creek 6150 -M 5.4 * 7.9 9.6 82
----- -----
Basin Index (%) 33 88
CHEYENNE RIVER BASIN
Blind Park 6900 .2 4.8 4 9.7 11.9 82
North Rapid Creek 6150 -M 5.4 * 7.9 9.6 82
----- -----
Basin Index (%) 4 82
UPPER N. PLATTE
Arapaho Ridge 10960 20.6 23.0 90 20.9 22.6 92
Blackhall Mtn 9830 28.8 31.2 92 31.1 30.6 102
Cinnabar Park 9670 15.5 20.8 75 21.8 24.5 89
Columbine 9170 20.6 20.9 99 27.3 26.0 105
Divide Peak 8700 14.4 19.8 73 20.1 22.0 91
Joe Wright 10140 22.5 21.8 103 28.7 26.6 108
Laprele Creek 8370 6.2 8.6 72 10.0 12.4 81
Med Bow 10500 38.4 -M * 35.1 -M *
Never Summer 10300 21.0 20.8 101 17.3 18.0 96
North French Creek 10150 32.4 31.6 103 30.9 28.2 110
Old Battle 9850 30.0 32.6 92 29.4 35.4 83
Rawah 9100 8.3 10.2 81 14.8 16.4 90
Sage Creek Basin 7830 5.3 10.0 53 12.5 13.5 93
Sand Lake 10080 29.7 29.8 100 28.3 26.5 107
South Brush Creek 8480 8.0 10.1 79 12.5 14.2 88
Tower 10610 42.8 44.4 96 43.0 41.0 105
Webber Springs 9250 17.1 21.4 80 23.0 26.1 88
Whiskey Park 8950 26.2 26.6 98 29.1 28.4 102
Willow Creek Pass 9520 13.5 14.3 94 13.5 14.4 94
Zirkel 9320 20.0 25.4 79 30.8 31.6 97
----- -----
Basin Index (%) 90 97
SWEETWATER
Deer Park 9690 15.9 15.4 103 19.7 19.3 102
Larsen Creek 8880 4.1 8.6 48 12.4 14.3 87
South Pass 9040 13.4 15.8 85 16.8 16.5 102
----- -----
Basin Index (%) 84 98
LOWER N. PLATTE
Casper Mtn. 7940 7.4 14.0 53 11.4 14.8 77
Laprele Creek 8370 6.2 8.6 72 10.0 12.4 81
Reno Hill 8410 11.2 14.3 78 14.2 16.6 86
Windy Peak 7900 5.3 7.4 72 7.8 11.0 71
----- -----
Basin Index (%) 68 79
LARAMIE RIVER
Brooklyn Lake 10250 22.7 22.0 103 24.7 23.0 107
Cinnabar Park 9670 15.5 20.8 75 21.8 24.5 89
Crow Creek 8320 .0 4.3 0 8.7 11.1 78
Deadman Hill 10240 18.5 16.6 111 18.5 18.7 99
Rawah 9100 8.3 10.2 81 14.8 16.4 90
Roach 9710 12.5 15.8 79 17.4 20.0 87
Windy Peak 7900 5.3 7.4 72 7.8 11.0 71
----- -----
Basin Index (%) 85 91
S. PLATTE
Crow Creek 8320 .0 4.3 0 8.7 11.1 78
----- -----
Basin Index (%) 0 78
LITTLE SNAKE RIVER
Battle Mountain 7460 3.6 7.5 48 16.0 16.0 100
Divide Peak 8700 14.4 19.8 73 20.1 22.0 91
Elk River 8710 12.2 16.4 74 19.7 20.0 98
Elkhead Divide 8780 13.1 -M * 19.0 -M *
Little Snake River 8930 21.5 25.6 84 31.1 33.1 94
Old Battle 9850 30.0 32.6 92 29.4 35.4 83
Sage Creek Basin 7830 5.3 10.0 53 12.5 13.5 93
Sandstone RS 8150 9.0 11.9 76 15.0 18.4 82
Whiskey Park 8950 26.2 26.6 98 29.1 28.4 102
----- -----
Basin Index (%) 81 93
UPPER GREEN RIVER
Big Sandy Opening 9100 11.1 13.8 80 12.0 13.8 87
Blind Bull Sum 8880 26.3 24.8 106 18.7 17.8 105
East Rim Divide 8010 6.5 9.7 67 11.5 11.5 100
Elkhart Park G.S. 9410 10.8 12.9 84 12.6 13.0 97
Gros Ventre Summit 8760 11.7 12.9 91 13.3 12.8 104
Gunsight Pass 9830 12.9 13.0 99 13.6 14.4 94
Indian Creek 9400 24.6 24.3 101 22.5 20.0 112
Kendall R.S. 7790 9.9 10.0 99 14.3 13.3 108
Larsen Creek 8880 4.1 8.6 48 12.4 14.3 87
Loomis Park 8240 12.5 14.6 86 16.8 17.2 98
New Fork Lake 8380 6.9 9.8 70 -M 10.8 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 11.0 11.8 93 16.2 14.0 116
Spring Creek Divide 9020 27.5 25.2 109 25.6 24.4 105
Triple Peak 8520 27.6 22.1 125 27.5 25.7 107
----- -----
Basin Index (%) 95 102
LOWER GREEN RIVER
Blacks Fork Jct 8880 8.3 7.5 111 13.7 12.4 110
Buck Pasture 9620 11.1 -M * 19.2 -M *
EF Blacks Fork GS 9360 7.2 11.8 61 12.9 11.7 110
Hams Fork 7870 6.8 9.0 76 12.8 11.2 114
Henrys Fork 10180 -M -M * 13.4 -M *
Hewinta 9510 5.8 9.6 60 14.7 13.9 106
Hickerson Park 9130 2.2 6.6 33 9.8 11.0 89
Hole-in-Rock 9170 3.0 6.4 47 10.3 10.5 98
Indian Creek 9400 24.6 24.3 101 22.5 20.0 112
Kelley R.S. 8240 15.4 14.6 105 18.0 16.6 108
Spirit Lk 10240 11.0 13.7 80 14.8 18.5 80
Steel Creek Park 10140 16.0 15.2 105 17.7 16.9 105
----- -----
Basin Index (%) 84 103
UPPER BEAR RIVER
Bear River RS 8510 1.0 6.9 14 13.3 12.4 107
Bug Lake 7980 14.4 18.4 78 19.6 18.5 106
Burts Miller Ranch 7900 .0 2.5 0 12.2 8.2 149
Chalk Creek #1 9160 17.7 23.7 75 23.3 24.0 97
Giveout 6940 4.1 4.8 85 12.7 13.0 98
Hayden Fork 9160 8.8 14.1 62 21.6 21.5 100
Kelley R.S. 8240 15.4 14.6 105 18.0 16.6 108
Lily Lake 9130 9.1 12.7 72 15.2 16.0 95
Monte Cristo 8930 23.1 27.4 84 25.0 26.6 94
Salt River Summit 7630 12.3 11.8 104 14.0 16.4 85
Spring Creek Divide 9020 27.5 25.2 109 25.6 24.4 105
Trial Lake 9970 24.1 22.2 109 25.0 22.7 110
----- -----
Basin Index (%) 85 102
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.
