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 THURSDAY: APRIL 21 , 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 10.0 11.7 85 20.9 21.8 96
Black Bear 8170 30.6 36.9 83 35.8 40.0 90
Blind Bull Sum 8650 25.2 24.1 105 17.3 20.3 85
Cottonwood Creek 7670 18.2 18.3 99 27.5 26.0 106
East Rim Divide 7930 2.6 9.4 28 11.6 12.3 94
Grand Targhee 9260 41.6 42.2 99 33.3 32.8 102
Granite Creek 6770 8.7 10.5 83 18.4 20.4 90
Grassy Lake 7265 24.4 31.1 78 36.0 37.6 96
Gros Ventre Summit 8750 11.2 13.2 85 11.7 13.8 85
Gunsight Pass 9820 13.9 13.7 101 15.7 15.0 105
Lewis Lake Divide 7850 25.1 30.5 82 32.7 37.0 88
Phillips Bench 8200 21.0 25.4 83 27.2 29.3 93
Salt River Summit 7760 8.5 9.4 90 16.4 17.4 94
Snake River Station 6920 9.2 11.1 83 23.1 23.6 98
Spring Creek Divide 9000 26.0 23.5 111 24.5 24.9 98
Thumb Divide 7980 7.7 14.4 53 15.7 19.8 79
Togwotee Pass 9580 21.2 24.0 88 25.7 25.8 100
Two Ocean Plateau 9240 26.6 28.3 94 25.8 28.7 90
Willow Creek 8380 23.7 26.7 89 34.4 35.4 97
Younts Peak 8350 8.9 15.2 59 14.0 16.7 84
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Basin Index (%) 87 94
MADISON-GALLATIN
Black Bear 8170 30.6 36.9 83 35.8 40.0 90
Canyon 7870 7.8 12.2 64 13.6 17.1 80
Madison Plateau 7750 19.8 22.9 86 23.7 27.6 86
West Yellowstone 6700 1.4 7.0 20 14.2 15.2 93
Whiskey Creek 6800 11.5 15.4 75 17.7 21.3 83
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Basin Index (%) 75 87
YELLOWSTONE
Beartooth Lake 9360 18.5 23.5 79 18.9 20.8 91
Burnt Mtn 5880 .0 .0 * 12.3 14.4 85
Canyon 7870 7.8 12.2 64 13.6 17.1 80
Cole Creek 7850 11.4 16.4 70 13.1 14.6 90
Evening Star 9200 25.2 24.7 102 29.2 28.9 101
Fisher Creek 9100 27.9 32.6 86 26.9 33.5 80
Northeast Entrance 7350 -M 6.4 * 11.8 13.0 91
Parker Peak 9400 20.8 21.1 99 21.6 18.8 115
Sylvan Lake 8420 14.4 20.4 71 24.3 23.7 103
Thumb Divide 7980 7.7 14.4 53 15.7 19.8 79
Two Ocean Plateau 9240 26.6 28.3 94 25.8 28.7 90
White Mill 8700 22.1 23.7 93 22.4 25.0 90
Wolverine 7650 -M 6.9 * 12.2 12.9 95
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Basin Index (%) 84 91
WIND RIVER
Burroughs Creek 8750 7.3 -M * 13.1 -M *
Castle Creek 8400 .0 -M * 7.5 -M *
Cold Springs 9630 7.3 4.3 170 10.5 11.0 95
Deer Park 9700 17.0 16.3 104 19.5 21.7 90
Hobbs Park 10100 17.0 14.9 114 17.6 14.9 118
Kirwin 9550 11.4 10.0 114 14.8 12.5 118
Little Warm 9370 8.6 10.0 86 12.0 14.0 86
Owl Creek 8975 2.7 3.7 73 6.6 6.9 96
South Pass 9040 14.3 15.4 93 14.3 18.7 76
St. Lawrence Alt 8620 4.9 5.2 94 10.9 10.0 109
Togwotee Pass 9580 21.2 24.0 88 25.7 25.8 100
Townsend Creek 8700 10.7 9.3 115 14.5 13.4 108
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Basin Index (%) 102 98
BIGHORN BASIN
Bald Mtn. 9380 16.1 19.9 81 14.0 18.4 76
Bear Trap Meadow 8200 4.0 2.9 138 7.4 9.5 78
Bone Springs Div 9350 14.2 16.1 88 12.9 16.8 77
Grave Springs 8550 6.7 9.5 71 6.8 11.8 58
Kirwin 9550 11.4 10.0 114 14.8 12.5 118
Marquette 8760 8.3 -M * 13.5 -M *
Middle Powder 7760 9.3 12.4 75 8.3 12.9 64
Owl Creek 8975 2.7 3.7 73 6.6 6.9 96
Powder River Pass 9480 7.8 10.2 76 9.9 13.8 72
Shell Creek 9580 13.0 15.4 84 11.2 14.9 75
Timber Creek 7950 5.8 4.6 126 12.9 8.5 152
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Basin Index (%) 87 83
SHOSHONE RIVER
Blackwater 9780 23.5 23.8 99 26.1 21.9 119
Evening Star 9200 25.2 24.7 102 29.2 28.9 101
Marquette 8760 8.3 -M * 13.5 -M *
Sylvan Road 7120 .0 9.5 0 16.0 17.7 90
Younts Peak 8350 8.9 15.2 59 14.0 16.7 84
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Basin Index (%) 79 100
POWDER RIVER
Bear Trap Meadow 8200 4.0 2.9 138 7.4 9.5 78
Cloud Peak Reservoir 9860 11.2 15.9 70 14.5 15.0 97
Grave Springs 8550 6.7 9.5 71 6.8 11.8 58
Hansen Sawmill 8360 5.2 4.6 113 9.1 9.7 94
Middle Powder 7760 9.3 12.4 75 8.3 12.9 64
Powder River Pass 9480 7.8 10.2 76 9.9 13.8 72
Soldier Park 8720 1.3 -M * 8.9 -M *
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Basin Index (%) 80 77
TONGUE RIVER
Big Goose 7990 8.8 9.2 96 11.1 12.8 87
Bone Springs Div 9350 14.2 16.1 88 12.9 16.8 77
Burgess Junction 7880 10.7 12.6 85 11.7 13.6 86
Dome Lake 8880 9.7 11.8 82 12.2 15.0 81
Little Goose 8870 9.9 -M * 13.2 -M *
Sucker Creek 8880 10.3 12.7 81 13.3 15.9 84
Tie Creek 6870 1.5 4.2 36 10.9 13.0 84
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Basin Index (%) 83 83
BELLE FOURCHE
Cole Canyon 5910 .1 1.8 6 10.2 10.5 97
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Basin Index (%) 6 97
CHEYENNE RIVER BASIN
Blind Park 6890 .0 4.0 0 11.2 13.2 85
North Rapid Creek 6130 .0 4.0 0 9.0 11.2 80
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Basin Index (%) 0 83
UPPER N. PLATTE
Arapaho Ridge 10960 25.5 21.3 120 26.6 24.4 109
Blackhall Mtn 9820 33.3 -M * 32.6 -M *
Columbine 9160 21.8 20.6 106 27.5 27.0 102
Divide Peak 8880 19.3 18.6 104 26.3 22.9 115
Joe Wright 10120 -M 22.4 * -M 27.9 *
Laprele Creek 8375 8.1 7.8 104 12.3 13.8 89
Med Bow 10500 36.1 -M * 33.5 -M *
North French Creek 10130 28.0 32.0 88 28.2 28.7 98
Never Summer 10280 22.0 20.7 106 19.3 -M *
Old Battle 10000 33.0 32.9 100 31.3 37.2 84
Rawah 9020 13.0 8.3 157 20.7 15.6 133
Sage Creek Basin 7850 11.6 5.4 215 13.8 15.3 90
Sand Lake 10050 30.3 30.6 99 29.3 27.0 109
South Brush Creek 8440 9.1 9.7 94 15.7 16.6 95
Tower 10500 41.0 48.2 85 40.2 42.3 95
Webber Springs 9250 22.6 21.8 104 28.2 28.5 99
Willow Creek Pass 9540 17.5 13.3 132 17.6 14.5 121
Zirkel 9340 25.6 22.6 113 32.2 29.8 108
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Basin Index (%) 105 102
SWEETWATER
Deer Park 9700 17.0 16.3 104 19.5 21.7 90
Larsen Creek 9000 7.5 10.2 74 14.8 -M *
South Pass 9040 14.3 15.4 93 14.3 18.7 76
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Basin Index (%) 93 84
LOWER N. PLATTE
Casper Mtn. 7900 17.4 14.4 121 16.7 16.7 100
Laprele Creek 8375 8.1 7.8 104 12.3 13.8 89
Reno Hill 8400 16.5 14.0 118 20.3 17.3 117
Windy Peak 7900 8.3 6.5 128 12.0 11.7 103
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Basin Index (%) 118 103
LARAMIE RIVER
Brooklyn Lake 10240 24.1 22.3 108 25.0 22.9 109
Cinnabar Park 9574 19.9 20.0 100 24.4 25.4 96
Crow Creek 8330 7.2 .3 2400* 16.6 12.0 138
Deadman Hill 10220 22.2 17.2 129 22.2 19.0 117
Rawah 9020 13.0 8.3 157 20.7 15.6 133
Roach 9700 20.1 16.6 121 23.7 20.7 114
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Basin Index (%) 126 115
S. PLATTE
Black Mountain 8920 14.6 -M * 19.7 -M *
Crow Creek 8330 7.2 .3 2400* 16.6 12.0 138
Deadman Hill 10220 22.2 17.2 129 22.2 19.0 117
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Basin Index (%) 168* 125
LITTLE SNAKE RIVER
Battle Mountain 7440 6.1 3.9 156 17.1 16.1 106
Divide Peak 8880 19.3 18.6 104 26.3 22.9 115
Elk River 8700 13.4 15.2 88 19.9 21.4 93
Little Snake River 8915 23.0 24.1 95 34.2 31.2 110
Old Battle 10000 33.0 32.9 100 31.3 37.2 84
Sage Creek Basin 7850 11.6 5.4 215 13.8 15.3 90
Sandstone RS 8150 7.3 10.0 73 13.5 19.6 69
Whiskey Park 8950 26.9 25.8 104 30.2 29.7 102
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Basin Index (%) 103 96
UPPER GREEN RIVER
Big Sandy Opening 9080 11.2 12.6 89 13.3 14.2 94
Blind Bull Sum 8650 25.2 24.1 105 17.3 20.3 85
East Rim Divide 7930 2.6 9.4 28 11.6 12.3 94
Elkhart Park G.S. 9400 9.0 11.9 76 12.3 14.1 87
Gros Ventre Summit 8750 11.2 13.2 85 11.7 13.8 85
Gunsight Pass 9820 13.9 13.7 101 15.7 15.0 105
Kendall R.S. 7740 -M 8.1 * 12.2 14.8 82
Loomis Park 8240 10.3 12.8 80 17.3 18.0 96
New Fork Lake 8340 4.7 8.6 55 11.6 11.4 102
Pocket Creek 9360 8.3 -M * 10.6 -M *
Snider Basin 8060 8.5 10.6 80 14.6 14.8 99
Spring Creek Divide 9000 26.0 23.5 111 24.5 24.9 98
Triple Peak 8500 21.0 19.2 109 28.1 26.5 106
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Basin Index (%) 90 95
LOWER GREEN RIVER
Blacks Fork Jct 8870 9.7 -M * 13.5 -M *
Buck Pasture 9700 11.2 -M * 18.2 -M *
EF Blacks Fork GS 9360 8.1 -M * 12.2 -M *
Hams Fork 7840 6.4 6.4 100 11.5 12.1 95
Hewinta 9519 8.5 7.9 108 15.4 15.0 103
Hickerson Park 9145 10.3 5.3 194 13.9 11.1 125
Hole-in-Rock 9150 6.5 5.7 114 13.8 10.6 130
Indian Creek 9425 21.5 23.4 92 19.5 23.7 82
Kelley R.S. 8180 11.0 12.4 89 16.3 19.0 86
Spirit Lk 10235 16.7 -M * 19.7 -M *
Steel Creek Park 10200 18.4 16.2 114 20.8 17.8 117
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Basin Index (%) 107 102
UPPER BEAR RIVER
Bear River RS 8777 .3 -M * 12.6 -M *
Bug Lake 7950 15.4 16.9 91 20.4 20.5 100
Burts Miller Ranch 8000 .0 -M * 6.5 -M *
Chalk Creek #1 8993 17.8 24.5 73 23.5 26.9 87
Hayden Fork 9212 7.4 11.4 65 20.1 22.5 89
Kelley R.S. 8180 11.0 12.4 89 16.3 19.0 86
Lily Lake 9156 10.0 10.4 96 14.8 18.4 80
Monte Cristo 8960 25.1 27.4 92 29.4 27.5 107
Salt River Summit 7760 8.5 9.4 90 16.4 17.4 94
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Basin Index (%) 85 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.