Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
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 18 , 2026
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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 15.3 16.0 96 22.3 18.2 123
Blind Bull Sum 8880 22.2 21.8 102 15.7 16.2 97
Cottonwood Creek 7710 16.3 19.8 82 23.9 22.4 107
East Rim Divide 8010 8.2 10.0 82 11.0 10.1 109
Grand Targhee 9260 -M 36.6 * -M 27.0 *
Granite Creek 6770 12.7 15.6 81 19.9 16.8 118
Grassy Lake 7330 18.4 29.2 63 28.7 31.8 90
Gros Ventre Summit 8760 12.1 11.3 107 14.4 11.0 131
Gunsight Pass 9820 13.2 11.9 111 15.1 12.4 122
Lewis Lake Divide 7880 30.2 27.9 108 36.0 29.4 122
Loomis Park 8240 12.6 13.8 91 15.5 15.4 101
Phillips Bench 8170 20.3 23.4 87 25.9 24.0 108
Salt River Summit 7630 10.1 12.2 83 15.2 13.7 111
Snake River Station 6900 11.1 16.1 69 20.2 19.6 103
Somsen Ranch 6830 5.5 11.6 47 15.9 14.6 109
Spring Creek Divide 9020 20.7 22.3 93 23.3 21.6 108
Thumb Divide 7970 16.4 14.4 114 19.6 15.4 127
Togwotee Pass 9590 22.1 21.1 105 26.9 22.4 120
Triple Peak 8520 21.9 21.7 101 25.6 23.2 110
Two Ocean Plateau 9240 31.8 26.0 122 30.3 23.4 129
Willow Creek 8060 24.1 26.6 91 29.2 29.1 100
Younts Peak 8340 16.2 13.2 123 21.1 13.0 162
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Basin Index (%) 94 113
MADISON HEADWATERS IN WYOMING
Black Bear 8160 26.8 35.2 76 32.0 33.0 97
Canyon 7870 11.0 12.4 89 14.9 13.6 110
Madison Plateau 7710 17.4 20.3 86 24.4 22.0 111
West Yellowstone 6680 8.0 10.2 78 14.0 13.0 108
Whiskey Creek 6790 11.2 14.6 77 20.4 17.6 116
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Basin Index (%) 80 107
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 23.7 19.6 121 25.3 18.2 139
Canyon 7870 11.0 12.4 89 14.9 13.6 110
Evening Star 9030 28.0 23.4 120 33.3 25.6 130
Fisher Creek 9110 34.2 28.4 120 35.5 28.7 124
Monument Peak 8740 20.3 18.2 112 24.6 19.0 129
Northeast Entrance 7420 8.4 9.7 87 15.6 11.8 132
Parker Peak 9420 24.0 18.9 127 25.3 18.2 139
Sylvan Lake 8440 16.9 18.1 93 23.8 20.4 117
Thumb Divide 7970 16.4 14.4 114 19.6 15.4 127
Two Ocean Plateau 9240 31.8 26.0 122 30.3 23.4 129
White Mill 8730 25.6 21.6 119 25.6 20.8 123
Wolverine 7660 8.2 10.9 75 15.9 11.0 145
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Basin Index (%) 112 128
WIND RIVER
Burroughs Creek 8760 11.1 -M * 18.0 -M *
Castle Creek 8410 5.4 6.9 78 7.9 7.8 101
Cold Springs 9640 6.7 6.5 103 12.1 7.6 159
Deer Park 9690 13.9 12.0 116 16.4 15.0 109
Hobbs Park 10080 12.2 11.8 103 14.1 10.6 133
Kirwin 9580 13.1 9.4 139 18.3 10.1 181
Little Warm 9370 9.8 8.9 110 14.0 10.8 130
South Pass 9040 12.0 12.8 94 13.9 12.8 109
St. Lawrence Alt 8610 -M -M * -M -M *
Togwotee Pass 9590 22.1 21.1 105 26.9 22.4 120
Townsend Creek 8720 6.0 8.0 75 10.1 8.9 113
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Basin Index (%) 104 126
BIGHORN BASIN
Bald Mtn. 9360 15.2 16.5 92 15.1 14.0 108
Bear Trap Meadow 8200 4.8 5.6 86 9.0 7.0 129
Bone Springs Div 9340 12.5 14.2 88 10.7 13.1 82
Grave Springs 8560 4.2 7.6 55 8.0 8.2 98
Kirwin 9580 13.1 9.4 139 18.3 10.1 181
Marquette 8800 3.2 6.1 52 6.8 7.6 89
Middle Powder 7760 6.5 9.0 72 9.8 8.7 113
Owl Creek 8990 2.4 4.8 50 5.6 5.1 110
Powder River Pass 9480 9.8 9.7 101 14.1 10.8 131
Shell Creek 9570 12.0 13.0 92 13.2 11.8 112
Timber Creek 7910 .0 4.1 0 3.5 6.4 55
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Basin Index (%) 84 111
SHOSHONE RIVER
Blackwater 9830 21.6 20.3 106 25.5 19.3 132
Evening Star 9030 28.0 23.4 120 33.3 25.6 130
Marquette 8800 3.2 6.1 52 6.8 7.6 89
Sylvan Lake 8440 16.9 18.1 93 23.8 20.4 117
Sylvan Road 7140 8.8 10.8 81 17.9 14.9 120
Younts Peak 8340 16.2 13.2 123 21.1 13.0 162
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Basin Index (%) 103 127
POWDER RIVER
Bear Trap Meadow 8200 4.8 5.6 86 9.0 7.0 129
Cloud Peak Reservoir 9830 11.7 12.9 91 12.6 11.0 115
Grave Springs 8560 4.2 7.6 55 8.0 8.2 98
Hansen Sawmill 8360 4.0 5.8 69 9.4 7.4 127
Middle Powder 7760 6.5 9.0 72 9.8 8.7 113
Powder River Pass 9480 9.8 9.7 101 14.1 10.8 131
Soldier Park 8680 2.3 5.9 39 7.1 8.0 89
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Basin Index (%) 77 115
TONGUE RIVER
Big Goose 8010 -M 7.2 * 8.0 8.6 93
Bone Springs Div 9340 12.5 14.2 88 10.7 13.1 82
Burgess Junction 7910 6.4 9.4 68 9.8 10.2 96
Dome Lake 8890 7.4 10.0 74 11.1 10.6 105
Little Goose 8560 5.7 8.3 69 10.5 9.9 106
Sucker Creek 8840 7.3 10.6 69 11.8 11.9 99
Tie Creek 7050 .1 4.6 2 8.0 9.1 88
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Basin Index (%) 69 95
BELLE FOURCHE
Blind Park 6900 3.3 7.0 47 11.3 9.6 118
Cole Canyon 5930 3.4 5.0 68 9.9 7.6 130
North Rapid Creek 6150 4.4 6.2 71 8.6 7.8 110
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Basin Index (%) 61 119
CHEYENNE RIVER BASIN
Blind Park 6900 3.3 7.0 47 11.3 9.6 118
North Rapid Creek 6150 4.4 6.2 71 8.6 7.8 110
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Basin Index (%) 58 114
UPPER N. PLATTE
Arapaho Ridge 10960 13.9 19.2 72 15.1 19.1 79
Blackhall Mtn 9830 16.2 26.4 61 20.2 25.8 78
Cinnabar Park 9670 12.5 18.1 69 16.6 21.0 79
Columbine 9170 16.5 20.8 79 18.6 21.2 88
Divide Peak 8700 10.2 17.0 60 14.1 18.4 77
Joe Wright 10140 11.2 18.2 62 18.2 22.8 80
Laprele Creek 8370 4.9 8.4 58 9.4 9.9 95
Med Bow 10500 26.0 -M * 25.2 -M *
Never Summer 10300 13.1 17.6 74 9.9 14.5 68
North French Creek 10150 21.1 24.0 88 21.7 22.8 95
Old Battle 9840 20.9 26.0 80 26.0 29.1 89
Rawah 9100 6.4 9.6 67 9.4 13.2 71
Sage Creek Basin 7830 4.1 12.0 34 9.3 11.4 82
Sand Lake 10080 17.7 22.6 78 19.2 21.0 91
South Brush Creek 8480 6.3 10.8 58 8.2 11.7 70
Tower 10610 27.0 38.4 70 29.0 35.5 82
Webber Springs 9250 14.5 19.4 75 19.0 21.8 87
Whiskey Park 8950 20.2 24.3 83 23.4 24.3 96
Willow Creek Pass 9520 7.1 11.2 63 9.4 11.9 79
Zirkel 9320 16.5 26.0 63 23.9 27.6 87
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Basin Index (%) 70 84
SWEETWATER
Deer Park 9690 13.9 12.0 116 16.4 15.0 109
Larsen Creek 8880 5.9 10.5 56 10.6 11.4 93
South Pass 9040 12.0 12.8 94 13.9 12.8 109
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Basin Index (%) 90 104
LOWER N. PLATTE
Casper Mtn. 7940 5.3 11.5 46 9.2 11.2 82
Laprele Creek 8370 4.9 8.4 58 9.4 9.9 95
Reno Hill 8410 7.0 11.6 60 10.9 12.0 91
Windy Peak 7890 2.8 6.8 41 7.4 8.3 89
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Basin Index (%) 52 89
LARAMIE RIVER
Brooklyn Lake 10250 15.5 17.8 87 18.2 18.4 99
Cinnabar Park 9670 12.5 18.1 69 16.6 21.0 79
Crow Creek 8320 .2 6.6 3 6.2 9.3 67
Deadman Hill 10240 10.4 14.6 71 10.5 15.2 69
Rawah 9100 6.4 9.6 67 9.4 13.2 71
Roach 9710 8.5 13.6 62 11.7 15.8 74
Windy Peak 7890 2.8 6.8 41 7.4 8.3 89
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Basin Index (%) 65 79
S. PLATTE
Crow Creek 8320 .2 6.6 3 6.2 9.3 67
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Basin Index (%) 3 67
LITTLE SNAKE RIVER
Battle Mountain 7460 -M 11.1 * 12.1 13.1 92
Divide Peak 8700 10.2 17.0 60 14.1 18.4 77
Elk River 8710 11.6 16.6 70 15.7 16.8 93
Elkhead Divide 8780 10.9 -M * -M -M *
Little Snake River 8930 17.8 23.9 74 24.3 28.2 86
Old Battle 9840 20.9 26.0 80 26.0 29.1 89
Sage Creek Basin 7830 4.1 12.0 34 9.3 11.4 82
Sandstone RS 8150 7.7 11.4 68 12.5 15.9 79
Whiskey Park 8950 20.2 24.3 83 23.4 24.3 96
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Basin Index (%) 71 87
UPPER GREEN RIVER
Big Sandy Opening 9100 10.1 11.7 86 10.3 11.2 92
Blind Bull Sum 8880 22.2 21.8 102 15.7 16.2 97
East Rim Divide 8010 8.2 10.0 82 11.0 10.1 109
Elkhart Park G.S. 9410 10.7 11.1 96 12.9 11.2 115
Gros Ventre Summit 8760 12.1 11.3 107 14.4 11.0 131
Gunsight Pass 9820 13.2 11.9 111 15.1 12.4 122
Indian Creek 9400 19.9 20.6 97 19.4 17.4 111
Kendall R.S. 7790 12.6 11.0 115 16.1 12.1 133
Larsen Creek 8880 5.9 10.5 56 10.6 11.4 93
Loomis Park 8240 12.6 13.8 91 15.5 15.4 101
New Fork Lake 8380 8.7 9.6 91 12.3 9.5 129
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 8.5 12.0 71 13.8 12.6 110
Spring Creek Divide 9020 20.7 22.3 93 23.3 21.6 108
Triple Peak 8520 21.9 21.7 101 25.6 23.2 110
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Basin Index (%) 94 111
LOWER GREEN RIVER
Blacks Fork Jct 8880 6.7 7.8 86 10.1 10.5 96
Buck Pasture 9630 11.6 -M * 14.2 -M *
EF Blacks Fork GS 9360 4.6 10.4 44 9.3 9.8 95
Hams Fork 7860 8.1 10.2 79 11.5 9.4 122
Henrys Fork 10180 -M -M * 10.1 -M *
Hewinta 9510 5.6 8.6 65 10.6 11.4 93
Hickerson Park 9120 4.9 6.8 72 7.5 8.8 85
Hole-in-Rock 9170 3.6 6.4 56 8.1 8.5 95
Indian Creek 9400 19.9 20.6 97 19.4 17.4 111
Kelley R.S. 8240 11.4 13.1 87 16.2 14.4 112
Spirit Lk 10240 10.4 10.4 100 14.2 14.4 99
Steel Creek Park 10140 11.4 12.8 89 13.3 13.2 101
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Basin Index (%) 81 102
UPPER BEAR RIVER
Bear River RS 8510 5.6 8.4 67 10.0 10.1 99
Bug Lake 7980 13.7 16.5 83 18.8 15.5 121
Burts Miller Ranch 7900 1.6 4.9 33 10.3 6.6 156
Chalk Creek #1 9160 14.8 20.0 74 19.2 20.5 94
Giveout 6940 3.7 8.0 46 13.5 10.4 130
Hayden Fork 9170 11.0 13.6 81 17.3 17.5 99
Kelley R.S. 8240 11.4 13.1 87 16.2 14.4 112
Lily Lake 9130 7.7 11.2 69 11.7 13.6 86
Monte Cristo 8930 19.2 23.8 81 23.8 21.9 109
Salt River Summit 7630 10.1 12.2 83 15.2 13.7 111
Spring Creek Divide 9020 20.7 22.3 93 23.3 21.6 108
Trial Lake 9970 18.5 19.6 94 19.1 19.6 97
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Basin Index (%) 79 107
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.
