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 SATURDAY: JUNE 1 , 2019
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
Base Camp 7060 .0 .0 * 26.0 25.7 101
Black Bear 8170 36.2 24.5 148 53.4 46.4 115
Blind Bull Sum 8650 -M 11.5 * 25.1 24.4 103
Cottonwood Creek 7670 3.8 .0 * 34.1 31.4 109
East Rim Divide 7930 .0 .0 * 17.2 15.0 115
Grand Targhee 9260 44.4 40.0 111 41.5 38.6 108
Granite Creek 6770 .0 .0 * 27.3 24.1 113
Grassy Lake 7265 -M 4.8 * -M 43.7 *
Gros Ventre Summit 8750 -M .0 * 16.9 17.0 99
Gunsight Pass 9820 12.0 2.8 429 20.8 18.7 111
Lewis Lake Divide 7850 16.3 11.6 141 45.6 42.7 107
Phillips Bench 8200 16.0 9.6 167 39.0 34.2 114
Salt River Summit 7640 .0 .0 * 22.7 20.8 109
Snake River Station 6920 .0 .0 * 30.4 27.8 109
Spring Creek Divide 9000 19.8 11.5 172 30.2 29.2 103
Thumb Divide 7980 .0 .0 * 23.9 23.8 100
Togwotee Pass 9580 23.4 19.0 123 31.7 31.0 102
Two Ocean Plateau 9240 26.3 24.9 106 31.7 34.4 92
Willow Creek 8080 14.3 3.8 376 45.6 42.5 107
Younts Peak 8350 -M 3.2 * -M 20.7 *
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Basin Index (%) 144* 107
MADISON-GALLATIN
Black Bear 8170 36.2 24.5 148 53.4 46.4 115
Canyon 7870 .4 .0 * 20.7 21.0 99
Madison Plateau 7750 15.4 6.2 248 35.4 33.1 107
West Yellowstone 6700 .0 .0 * 22.0 18.5 119
Whiskey Creek 6800 1.5 .0 * 27.6 25.7 107
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Basin Index (%) 174* 110
YELLOWSTONE
Beartooth Lake 9360 24.6 17.1 144 27.7 25.2 110
Burnt Mtn 5880 .0 .0 * 26.5 20.8 127
Canyon 7870 .4 .0 * 20.7 21.0 99
Cole Creek 7850 19.4 9.2 211 23.8 21.3 112
Evening Star 9200 26.6 17.8 149 38.9 34.9 111
Fisher Creek 9100 30.8 28.1 110 44.4 40.1 111
Northeast Entrance 7350 .1 .0 * 19.2 16.7 115
Parker Peak 9400 24.6 13.8 178 32.1 23.8 135
Sylvan Lake 8420 10.2 6.6 155 34.0 29.3 116
Thumb Divide 7980 .0 .0 * 23.9 23.8 100
Two Ocean Plateau 9240 26.3 24.9 106 31.7 34.4 92
White Mill 8700 20.8 16.9 123 27.5 30.4 90
Wolverine 7650 .0 .0 * 18.4 16.5 112
Younts Peak 8350 -M 3.2 * -M 20.7 *
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Basin Index (%) 137 109
WIND RIVER
Burroughs Creek 8750 .1 -M * 20.0 -M *
Castle Creek 8400 .0 -M * 12.4 -M *
Cold Springs 9630 2.2 .0 * 16.2 15.4 105
Deer Park 9700 13.6 3.1 439 26.6 27.0 99
Hobbs Park 10100 20.3 6.1 333 23.3 20.5 114
Kirwin 9550 9.2 1.7 541 20.1 16.9 119
Little Warm 9370 1.3 .0 * 12.4 18.4 67
Owl Creek 8975 3.2 .0 * 15.5 10.7 145
South Pass 9040 10.0 .2 5000* 20.4 23.6 86
St. Lawrence Alt 8620 -M .0 * -M 14.5 *
Togwotee Pass 9580 23.4 19.0 123 31.7 31.0 102
Townsend Creek 8700 7.5 .0 * 21.7 18.2 119
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Basin Index (%) 301* 103
BIGHORN BASIN
Bald Mtn. 9380 22.6 13.7 165 23.2 23.5 99
Bear Trap Meadow 8200 .0 .0 * 14.3 13.8 104
Bone Springs Div 9350 15.4 8.6 179 19.9 22.2 90
Grave Springs 8550 2.2 .0 * 16.7 16.2 103
Kirwin 9550 9.2 1.7 541 20.1 16.9 119
Marquette 8760 12.6 -M * 24.2 -M *
Middle Powder 7760 .0 .0 * 18.7 17.4 107
Owl Creek 8975 3.2 .0 * 15.5 10.7 145
Powder River Pass 9480 2.6 .0 * 15.2 18.7 81
Shell Creek 9580 15.6 8.9 175 17.9 19.9 90
Timber Creek 7950 2.2 .0 * 19.3 13.6 142
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Basin Index (%) 222* 105
SHOSHONE RIVER
Blackwater 9780 29.6 19.6 151 35.1 27.4 128
Evening Star 9200 26.6 17.8 149 38.9 34.9 111
Marquette 8760 12.6 -M * 24.2 -M *
Sylvan Lake 8420 10.2 6.6 155 34.0 29.3 116
Sylvan Road 7120 .0 .0 * 20.4 21.3 96
Younts Peak 8350 -M 3.2 * -M 20.7 *
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Basin Index (%) 151 114
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 14.3 13.8 104
Cloud Peak Reservoir 9860 16.0 5.1 314 21.9 21.2 103
Grave Springs 8550 2.2 .0 * 16.7 16.2 103
Hansen Sawmill 8360 2.1 .0 * 17.3 14.1 123
Middle Powder 7760 .0 .0 * 18.7 17.4 107
Powder River Pass 9480 2.6 .0 * 15.2 18.7 81
Soldier Park 8720 2.3 -M * 15.7 -M *
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Basin Index (%) 449* 103
TONGUE RIVER
Big Goose 7990 7.7 .0 * 21.5 18.2 118
Bone Springs Div 9350 15.4 8.6 179 19.9 22.2 90
Burgess Junction 7880 5.1 .0 * 17.3 18.1 96
Dome Lake 8880 9.6 .0 * 20.2 20.3 100
Little Goose 8870 11.3 -M * 15.8 -M *
Sucker Creek 8880 11.8 .2 5900* 21.5 21.6 100
Tie Creek 6870 .0 .0 * 23.7 18.7 127
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Basin Index (%) 564* 104
BELLE FOURCHE
Blind Park 6890 .0 .0 * 11.8 18.4 64
Cole Canyon 5910 .0 .0 * 22.3 16.8 133
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Basin Index (%) * 97
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 11.8 18.4 64
North Rapid Creek 6130 -M .0 * 12.3 16.0 77
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Basin Index (%) * 70
UPPER N. PLATTE
Arapaho Ridge 10960 26.7 7.8 342 35.7 29.2 122
Blackhall Mtn 9820 29.3 -M * 42.3 -M *
Columbine 9160 4.6 .0 * 36.2 31.4 115
Divide Peak 8880 4.4 .0 * 31.2 27.4 114
Joe Wright 10120 22.3 13.9 160 38.3 34.3 112
Laprele Creek 8375 .0 .0 * 20.7 17.9 116
Med Bow 10500 43.2 -M * 44.9 -M *
Never Summer 10280 24.6 15.5 159 25.9 -M *
North French Creek 10130 30.2 20.3 149 38.7 35.0 111
Old Battle 10000 41.1 23.9 172 47.1 43.5 108
Rawah 9020 .2 .0 * 23.2 19.6 118
Sage Creek Basin 7850 -M .0 * 21.0 17.9 117
Sand Lake 10050 32.3 20.4 158 32.9 33.2 99
South Brush Creek 8440 .0 .0 * 17.8 21.1 84
Tower 10500 57.5 36.3 158 58.0 49.3 118
Webber Springs 9250 17.7 .0 * 40.2 33.1 121
Whiskey Park 8950 -M 6.3 * -M 34.9 *
Willow Creek Pass 9540 11.6 .0 * 22.9 18.5 124
Zirkel 9340 15.2 .0 * 46.1 34.0 136
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Basin Index (%) 209* 115
SWEETWATER
Deer Park 9700 13.6 3.1 439 26.6 27.0 99
Larsen Creek 9000 .0 .0 * 18.2 -M *
South Pass 9040 10.0 .2 5000* 20.4 23.6 86
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Basin Index (%) 715* 93
LOWER N. PLATTE
Casper Mtn. 7900 5.4 .0 * 22.8 21.7 105
Laprele Creek 8375 .0 .0 * 20.7 17.9 116
Reno Hill 8400 9.8 .0 * 27.0 22.7 119
Windy Peak 7900 .2 .0 * 16.5 16.1 102
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Basin Index (%) * 111
LARAMIE RIVER
Brooklyn Lake 10240 18.1 5.0 362 34.1 28.4 120
Cinnabar Park 9574 14.3 1.1 1300* 31.3 30.2 104
Crow Creek 8330 .0 .0 * 16.1 16.1 100
Deadman Hill 10220 16.8 7.8 215 26.0 24.0 108
Rawah 9020 .2 .0 * 23.2 19.6 118
Roach 9700 9.3 1.8 517 30.3 25.7 118
Windy Peak 7900 .2 .0 * 16.5 16.1 102
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Basin Index (%) 375* 111
S. PLATTE
Black Mountain 8920 .0 -M * 19.7 -M *
Crow Creek 8330 .0 .0 * 16.1 16.1 100
Deadman Hill 10220 16.8 7.8 215 26.0 24.0 108
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Basin Index (%) 215* 105
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 22.3 19.2 116
Divide Peak 8880 4.4 .0 * 31.2 27.4 114
Elk River 8700 .0 .0 * 26.0 25.5 102
Little Snake River 8915 16.7 1.9 879* 46.6 36.1 129
Old Battle 10000 41.1 23.9 172 47.1 43.5 108
Sage Creek Basin 7850 -M .0 * 21.0 17.9 117
Sandstone RS 8150 -M .0 * 23.7 23.3 102
Whiskey Park 8950 -M 6.3 * -M 34.9 *
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Basin Index (%) 241* 113
UPPER GREEN RIVER
Big Sandy Opening 9080 3.1 .0 * 19.5 17.9 109
Blind Bull Sum 8650 -M 11.5 * 25.1 24.4 103
East Rim Divide 7930 .0 .0 * 17.2 15.0 115
Elkhart Park G.S. 9400 8.8 .0 * 20.6 17.9 115
Gros Ventre Summit 8750 -M .0 * 16.9 17.0 99
Gunsight Pass 9820 12.0 2.8 429 20.8 18.7 111
Indian Creek 9425 19.4 10.4 187 26.7 28.1 95
Kendall R.S. 7740 .1 .0 * 16.8 17.6 95
Loomis Park 8240 .4 .0 * 23.2 21.5 108
New Fork Lake 8340 .0 .0 * 16.4 14.6 112
Pocket Creek 9360 7.5 -M * 19.3 -M *
Snider Basin 8060 .0 .0 * 18.4 17.5 105
Spring Creek Divide 9000 19.8 11.5 172 30.2 29.2 103
Triple Peak 8500 -M .0 * -M 31.5 *
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Basin Index (%) 257* 105
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 18.7 -M *
Buck Pasture 9632 6.3 -M * 27.4 -M *
EF Blacks Fork GS 9360 .0 -M * 18.9 -M *
Hams Fork 7840 .0 .0 * 19.5 15.2 128
Hewinta 9500 .0 .0 * 21.0 18.6 113
Hickerson Park 9122 .0 .0 * 17.8 14.4 124
Hole-in-Rock 9168 .0 .0 * 17.4 14.0 124
Indian Creek 9425 19.4 10.4 187 26.7 28.1 95
Kelley R.S. 8180 2.2 .0 * 23.8 22.8 104
Spirit Lk 10235 13.4 -M * 24.9 -M *
Steel Creek Park 10158 15.8 9.4 168 26.9 22.1 122
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Basin Index (%) 189* 113
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 20.8 -M *
Bug Lake 7987 6.3 .0 * 32.1 24.4 132
Burts Miller Ranch 8000 .2 -M * 11.4 -M *
Chalk Creek #1 9171 17.4 6.0 290 38.5 32.0 120
Hayden Fork 9130 .0 .0 * 30.6 26.8 114
Kelley R.S. 8180 2.2 .0 * 23.8 22.8 104
Lily Lake 9133 .0 .0 * 22.3 22.3 100
Monte Cristo 8932 26.2 4.2 624 42.1 32.8 128
Salt River Summit 7640 .0 .0 * 22.7 20.8 109
Spring Creek Divide 9000 19.8 11.5 172 30.2 29.2 103
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Basin Index (%) 331* 115
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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.
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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.
