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: MAY 4 , 2016
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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 7030 3.5 7.8 45 21.3 23.1 92
Black Bear 8170 28.9 37.3 77 37.1 42.2 88
Blind Bull Sum 8650 24.7 22.8 108 17.8 21.6 82
Cottonwood Creek 7670 15.8 14.4 110 29.0 27.8 104
East Rim Divide 7930 .0 7.7 0 12.5 13.1 95
Grand Targhee 9260 41.6 45.7 91 34.5 35.2 98
Granite Creek 6770 2.0 7.6 26 19.0 21.6 88
Grassy Lake 7265 17.7 27.9 63 36.8 39.7 93
Gros Ventre Summit 8750 8.3 11.1 75 12.0 14.9 81
Gunsight Pass 9820 13.9 12.0 116 16.4 16.3 101
Lewis Lake Divide 7850 18.4 29.6 62 33.4 39.0 86
Phillips Bench 8200 17.0 24.5 69 27.8 31.0 90
Salt River Summit 7760 3.9 7.4 53 17.3 18.6 93
Snake River Station 6920 .0 5.6 0 23.4 25.0 94
Spring Creek Divide 9000 25.1 24.3 103 25.4 26.5 96
Thumb Divide 7980 1.0 10.8 9 16.0 21.2 75
Togwotee Pass 9580 22.0 24.7 89 27.0 27.7 97
Two Ocean Plateau 9240 25.6 29.9 86 26.1 30.5 86
Willow Creek 8380 20.1 22.0 91 36.5 38.1 96
Younts Peak 8350 1.7 15.8 11 14.8 18.0 82
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Basin Index (%) 75 91
MADISON-GALLATIN
Black Bear 8170 28.9 37.3 77 37.1 42.2 88
Canyon 7870 3.8 9.1 42 14.2 18.2 78
Madison Plateau 7750 14.8 20.9 71 24.4 29.2 84
West Yellowstone 6700 .0 .2 0* 14.6 16.2 90
Whiskey Creek 6800 7.1 13.3 53 18.0 22.6 80
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Basin Index (%) 68 84
YELLOWSTONE
Beartooth Lake 9360 18.2 22.7 80 19.5 22.2 88
Burnt Mtn 5880 .0 .0 * 13.8 16.2 85
Canyon 7870 3.8 9.1 42 14.2 18.2 78
Cole Creek 7850 11.7 16.7 70 15.3 16.7 92
Evening Star 9200 24.1 24.9 97 30.9 30.8 100
Fisher Creek 9100 26.5 32.7 81 27.4 35.5 77
Northeast Entrance 7350 .0 1.6 0 12.2 14.0 87
Parker Peak 9400 18.5 21.2 87 22.8 20.3 112
Sylvan Lake 8420 11.4 19.0 60 25.2 25.4 99
Thumb Divide 7980 1.0 10.8 9 16.0 21.2 75
Two Ocean Plateau 9240 25.6 29.9 86 26.1 30.5 86
White Mill 8700 19.9 24.0 83 22.7 26.6 85
Wolverine 7650 .0 1.1 0 12.9 14.0 92
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Basin Index (%) 75 89
WIND RIVER
Burroughs Creek 8750 6.1 -M * 15.0 -M *
Castle Creek 8400 .0 -M * 8.9 -M *
Cold Springs 9630 6.8 1.4 486 13.0 12.7 102
Deer Park 9700 19.0 15.4 123 23.0 23.8 97
Hobbs Park 10100 20.4 16.0 128 21.8 17.0 128
Kirwin 9550 12.7 10.6 120 16.5 14.1 117
Little Warm 9370 7.2 8.1 89 12.8 15.6 82
Owl Creek 8975 2.3 .6 383 8.9 8.1 110
South Pass 9040 16.6 14.1 118 17.8 20.7 86
St. Lawrence Alt 8620 5.3 2.0 265 13.6 11.8 115
Togwotee Pass 9580 22.0 24.7 89 27.0 27.7 97
Townsend Creek 8700 12.4 6.6 188 18.6 15.2 122
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Basin Index (%) 125 104
BIGHORN BASIN
Bald Mtn. 9380 16.6 20.4 81 15.0 20.0 75
Bear Trap Meadow 8200 2.7 .4 675* 9.7 10.9 89
Bone Springs Div 9350 13.6 16.4 83 14.1 18.6 76
Grave Springs 8550 9.1 9.3 98 10.2 13.1 78
Kirwin 9550 12.7 10.6 120 16.5 14.1 117
Marquette 8760 7.9 -M * 14.0 -M *
Middle Powder 7760 12.6 11.4 111 12.0 14.4 83
Owl Creek 8975 2.3 .6 383 8.9 8.1 110
Powder River Pass 9480 7.5 9.1 82 11.4 15.4 74
Shell Creek 9580 13.7 16.0 86 13.1 16.6 79
Timber Creek 7950 4.8 2.5 192 14.3 10.2 140
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Basin Index (%) 99 89
SHOSHONE RIVER
Blackwater 9780 23.5 25.8 91 27.1 23.8 114
Evening Star 9200 24.1 24.9 97 30.9 30.8 100
Marquette 8760 7.9 -M * 14.0 -M *
Sylvan Road 7120 .0 4.1 0 16.2 18.8 86
Younts Peak 8350 1.7 15.8 11 14.8 18.0 82
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Basin Index (%) 70 97
POWDER RIVER
Bear Trap Meadow 8200 2.7 .4 675* 9.7 10.9 89
Cloud Peak Reservoir 9860 13.6 16.3 83 17.7 17.0 104
Grave Springs 8550 9.1 9.3 98 10.2 13.1 78
Hansen Sawmill 8360 3.7 1.7 218 10.9 11.1 98
Middle Powder 7760 12.6 11.4 111 12.0 14.4 83
Powder River Pass 9480 7.5 9.1 82 11.4 15.4 74
Soldier Park 8720 .9 -M * 11.0 -M *
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Basin Index (%) 102 88
TONGUE RIVER
Big Goose 7990 9.6 9.4 102 13.9 14.4 97
Bone Springs Div 9350 13.6 16.4 83 14.1 18.6 76
Burgess Junction 7880 11.0 11.8 93 13.4 15.0 89
Dome Lake 8880 10.7 11.3 95 14.8 16.7 89
Little Goose 8870 11.5 -M * 16.4 -M *
Sucker Creek 8880 10.8 11.9 91 15.5 17.7 88
Tie Creek 6870 .0 2.5 0 12.4 14.7 84
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Basin Index (%) 88 87
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 11.4 12.4 92
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Basin Index (%) * 92
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .2 0* 12.0 14.6 82
North Rapid Creek 6130 .0 .0 * 9.6 12.6 76
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Basin Index (%) 0* 79
UPPER N. PLATTE
Arapaho Ridge 10960 27.5 22.3 123 29.2 26.6 110
Blackhall Mtn 9820 35.6 -M * 36.1 -M *
Columbine 9160 20.1 17.1 118 29.5 28.9 102
Divide Peak 8880 20.7 17.5 118 30.4 24.8 123
Joe Wright 10120 -M 22.9 * -M 30.4 *
Laprele Creek 8375 8.5 5.4 157 15.7 15.3 103
Med Bow 10500 38.6 -M * 38.0 -M *
North French Creek 10130 32.2 32.7 98 33.1 31.2 106
Never Summer 10280 22.9 21.8 105 20.8 -M *
Old Battle 10000 37.5 34.8 108 36.3 39.7 91
Rawah 9020 11.7 4.8 244 22.3 17.6 127
Sage Creek Basin 7850 11.1 .8 1388* 16.1 16.4 98
Sand Lake 10050 34.1 31.6 108 33.4 29.5 113
South Brush Creek 8440 8.5 7.9 108 19.0 18.2 104
Tower 10500 45.9 50.7 91 45.0 45.3 99
Webber Springs 9250 23.6 21.1 112 31.3 30.3 103
Willow Creek Pass 9540 18.2 14.5 126 18.9 16.0 118
Zirkel 9340 25.7 20.7 124 35.4 31.3 113
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Basin Index (%) 115 107
SWEETWATER
Deer Park 9700 19.0 15.4 123 23.0 23.8 97
Larsen Creek 9000 4.7 8.3 57 16.1 -M *
South Pass 9040 16.6 14.1 118 17.8 20.7 86
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Basin Index (%) 107 92
LOWER N. PLATTE
Casper Mtn. 7900 20.0 12.5 160 20.3 18.4 110
Laprele Creek 8375 8.5 5.4 157 15.7 15.3 103
Reno Hill 8400 18.5 12.1 153 24.3 19.3 126
Windy Peak 7900 9.4 3.1 303 15.7 13.2 119
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Basin Index (%) 170 115
LARAMIE RIVER
Brooklyn Lake 10240 26.1 23.0 113 28.8 25.1 115
Cinnabar Park 9574 22.5 18.8 120 28.4 27.3 104
Crow Creek 8330 6.4 .0 * 20.1 13.7 147
Deadman Hill 10220 23.9 19.1 125 24.5 21.0 117
Rawah 9020 11.7 4.8 244 22.3 17.6 127
Roach 9700 22.3 17.1 130 27.4 22.6 121
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Basin Index (%) 136 119
S. PLATTE
Black Mountain 8920 -M -M * 21.8 -M *
Crow Creek 8330 6.4 .0 * 20.1 13.7 147
Deadman Hill 10220 23.9 19.1 125 24.5 21.0 117
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Basin Index (%) 159* 129
LITTLE SNAKE RIVER
Battle Mountain 7440 2.8 .0 * 19.7 17.4 113
Divide Peak 8880 20.7 17.5 118 30.4 24.8 123
Elk River 8700 12.9 12.0 108 22.2 23.1 96
Little Snake River 8915 24.6 21.7 113 38.2 33.2 115
Old Battle 10000 37.5 34.8 108 36.3 39.7 91
Sage Creek Basin 7850 11.1 .8 1388* 16.1 16.4 98
Sandstone RS 8150 6.1 4.6 133 16.0 21.0 76
Whiskey Park 8950 29.2 26.9 109 34.3 32.0 107
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Basin Index (%) 122 103
UPPER GREEN RIVER
Big Sandy Opening 9080 10.8 9.4 115 14.6 15.5 94
Blind Bull Sum 8650 24.7 22.8 108 17.8 21.6 82
East Rim Divide 7930 .0 7.7 0 12.5 13.1 95
Elkhart Park G.S. 9400 8.6 10.6 81 13.5 15.2 89
Gros Ventre Summit 8750 8.3 11.1 75 12.0 14.9 81
Gunsight Pass 9820 13.9 12.0 116 16.4 16.3 101
Kendall R.S. 7740 -M 2.6 * 13.0 15.7 83
Loomis Park 8240 6.0 10.0 60 17.9 19.2 93
New Fork Lake 8340 .2 5.5 4 12.2 12.3 99
Pocket Creek 9360 9.1 -M * 11.9 -M *
Snider Basin 8060 2.7 8.5 32 15.1 15.8 96
Spring Creek Divide 9000 25.1 24.3 103 25.4 26.5 96
Triple Peak 8500 16.9 16.3 104 29.0 28.2 103
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Basin Index (%) 85 93
LOWER GREEN RIVER
Blacks Fork Jct 8870 7.3 -M * 14.8 -M *
Buck Pasture 9700 11.7 -M * 20.2 -M *
EF Blacks Fork GS 9360 7.3 -M * 14.3 -M *
Hams Fork 7840 .8 1.5 53 12.2 13.3 92
Hewinta 9519 8.8 4.2 210 16.7 16.5 101
Hickerson Park 9145 9.7 3.2 303 16.1 12.2 132
Hole-in-Rock 9150 4.7 1.7 276 15.7 11.8 133
Indian Creek 9425 19.7 22.1 89 20.5 25.3 81
Kelley R.S. 8180 8.2 10.4 79 17.2 20.5 84
Spirit Lk 10235 19.4 -M * 23.0 -M *
Steel Creek Park 10200 19.7 17.4 113 22.9 19.5 117
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Basin Index (%) 118 102
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 14.3 -M *
Bug Lake 7950 11.5 13.8 83 21.1 22.0 96
Burts Miller Ranch 8000 .0 -M * 7.2 -M *
Chalk Creek #1 8993 16.8 23.4 72 25.2 28.9 87
Hayden Fork 9212 5.9 8.6 69 22.8 24.1 95
Kelley R.S. 8180 8.2 10.4 79 17.2 20.5 84
Lily Lake 9156 9.6 9.7 99 16.7 19.9 84
Monte Cristo 8960 24.4 25.3 96 31.3 29.7 105
Salt River Summit 7760 3.9 7.4 53 17.3 18.6 93
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Basin Index (%) 81 93
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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.