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 FRIDAY: APRIL 26 , 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 15.1 10.6 142 24.1 22.2 109
Black Bear 8170 42.5 37.0 115 48.6 40.9 119
Blind Bull Sum 8650 24.7 24.2 102 20.9 20.8 100
Cottonwood Creek 7670 20.3 17.0 119 29.1 26.6 109
East Rim Divide 7930 4.6 8.9 52 13.2 12.5 106
Grand Targhee 9260 47.8 43.3 110 37.1 33.5 111
Granite Creek 6770 14.4 9.3 155 23.0 20.7 111
Grassy Lake 7265 33.6 30.1 112 41.9 38.4 109
Gros Ventre Summit 8750 7.6 12.3 62 13.6 14.1 96
Gunsight Pass 9820 14.9 13.4 111 17.6 15.5 114
Lewis Lake Divide 7850 36.7 30.7 120 42.6 37.7 113
Phillips Bench 8200 30.2 25.5 118 35.5 29.9 119
Salt River Summit 7640 10.8 8.4 129 18.5 17.9 103
Snake River Station 6920 13.7 9.8 140 27.9 24.2 115
Spring Creek Divide 9000 24.3 23.9 102 26.0 25.5 102
Thumb Divide 7980 16.4 14.1 116 21.0 20.3 103
Togwotee Pass 9580 25.5 24.5 104 27.6 26.5 104
Two Ocean Plateau 9240 33.4 29.2 114 28.8 29.3 98
Willow Creek 8080 31.5 25.3 125 39.2 36.5 107
Younts Peak 8350 -M 15.1 * -M 17.1 *
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Basin Index (%) 113 109
MADISON-GALLATIN
Black Bear 8170 42.5 37.0 115 48.6 40.9 119
Canyon 7870 13.2 11.6 114 18.2 17.5 104
Madison Plateau 7750 29.9 22.4 133 31.2 28.2 111
West Yellowstone 6700 4.5 4.7 96 19.0 15.5 123
Whiskey Creek 6800 17.1 15.4 111 23.8 21.8 109
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Basin Index (%) 118 114
YELLOWSTONE
Beartooth Lake 9360 23.9 23.5 102 22.3 21.3 105
Burnt Mtn 5880 2.8 .0 * 16.2 14.9 109
Canyon 7870 13.2 11.6 114 18.2 17.5 104
Cole Creek 7850 18.1 16.3 111 -M 15.5 *
Evening Star 9200 27.9 24.6 113 32.6 29.6 110
Fisher Creek 9100 36.1 33.2 109 39.4 34.3 115
Northeast Entrance 7350 4.8 4.9 98 16.1 13.4 120
Parker Peak 9400 26.7 21.8 122 27.0 19.4 139
Sylvan Lake 8420 21.2 20.3 104 30.2 24.3 124
Thumb Divide 7980 16.4 14.1 116 21.0 20.3 103
Two Ocean Plateau 9240 33.4 29.2 114 28.8 29.3 98
White Mill 8700 26.8 23.8 113 23.4 25.6 91
Wolverine 7650 5.1 5.2 98 14.1 13.3 106
Younts Peak 8350 -M 15.1 * -M 17.1 *
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Basin Index (%) 112 110
WIND RIVER
Burroughs Creek 8750 9.7 -M * 15.5 -M *
Castle Creek 8400 .0 -M * 7.6 -M *
Cold Springs 9630 5.0 2.7 185 9.5 11.7 81
Deer Park 9700 16.3 16.3 100 20.8 22.8 91
Hobbs Park 10100 16.8 15.7 107 14.9 15.9 94
Kirwin 9550 10.4 10.2 102 12.5 13.1 95
Little Warm 9370 9.2 9.4 98 10.4 14.6 71
Owl Creek 8975 1.4 2.3 61 8.2 7.4 111
South Pass 9040 14.4 15.2 95 14.2 19.6 72
St. Lawrence Alt 8620 -M 4.6 * -M 10.9 *
Togwotee Pass 9580 25.5 24.5 104 27.6 26.5 104
Townsend Creek 8700 9.7 8.7 111 13.3 14.3 93
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Basin Index (%) 104 90
BIGHORN BASIN
Bald Mtn. 9380 16.9 20.5 82 13.8 18.9 73
Bear Trap Meadow 8200 .1 1.7 6 7.5 10.0 75
Bone Springs Div 9350 13.7 16.4 84 12.9 17.4 74
Grave Springs 8550 7.8 9.2 85 10.4 12.3 85
Kirwin 9550 10.4 10.2 102 12.5 13.1 95
Marquette 8760 7.1 -M * 10.7 -M *
Middle Powder 7760 6.3 12.2 52 10.0 13.5 74
Owl Creek 8975 1.4 2.3 61 8.2 7.4 111
Powder River Pass 9480 8.7 10.1 86 -M 14.3 *
Shell Creek 9580 14.2 15.9 89 11.6 15.5 75
Timber Creek 7950 .2 3.6 6 7.7 9.2 84
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Basin Index (%) 78 81
SHOSHONE RIVER
Blackwater 9780 27.2 24.6 111 27.8 22.7 122
Evening Star 9200 27.9 24.6 113 32.6 29.6 110
Marquette 8760 7.1 -M * 10.7 -M *
Sylvan Lake 8420 21.2 20.3 104 30.2 24.3 124
Sylvan Road 7120 3.5 7.9 44 17.8 18.0 99
Younts Peak 8350 -M 15.1 * -M 17.1 *
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Basin Index (%) 103 115
POWDER RIVER
Bear Trap Meadow 8200 .1 1.7 6 7.5 10.0 75
Cloud Peak Reservoir 9860 12.4 16.4 76 12.1 15.8 77
Grave Springs 8550 7.8 9.2 85 10.4 12.3 85
Hansen Sawmill 8360 4.2 4.1 102 8.9 10.3 86
Middle Powder 7760 6.3 12.2 52 10.0 13.5 74
Powder River Pass 9480 8.7 10.1 86 -M 14.3 *
Soldier Park 8720 1.3 -M * 7.9 -M *
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Basin Index (%) 74 79
TONGUE RIVER
Big Goose 7990 7.3 9.1 80 11.1 13.5 82
Bone Springs Div 9350 13.7 16.4 84 12.9 17.4 74
Burgess Junction 7880 7.8 12.4 63 9.4 14.1 67
Dome Lake 8880 6.7 11.8 57 9.9 15.6 63
Little Goose 8870 8.6 -M * 8.8 -M *
Sucker Creek 8880 9.8 12.6 78 10.9 16.6 66
Tie Creek 6870 1.2 3.2 38 11.7 13.6 86
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Basin Index (%) 71 73
BELLE FOURCHE
Blind Park 6890 -M 3.2 * 8.4 13.7 61
Cole Canyon 5910 .0 .6 0 13.3 11.0 121
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Basin Index (%) 0 88
CHEYENNE RIVER BASIN
Blind Park 6890 -M 3.2 * 8.4 13.7 61
North Rapid Creek 6130 -M 3.1 * -M 11.7 *
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Basin Index (%) * 61
UPPER N. PLATTE
Arapaho Ridge 10960 23.9 21.9 109 27.4 25.6 107
Blackhall Mtn 9820 32.3 -M * 35.4 -M *
Columbine 9160 20.3 20.3 100 30.2 27.8 109
Divide Peak 8880 15.7 18.0 87 24.8 23.7 105
Joe Wright 10120 20.9 23.4 89 31.7 29.0 109
Laprele Creek 8375 8.3 7.2 115 15.6 14.5 108
Med Bow 10500 41.0 -M * 37.8 -M *
Never Summer 10280 23.2 21.3 109 20.4 -M *
North French Creek 10130 30.6 32.8 93 32.3 29.8 108
Old Battle 10000 37.7 34.3 110 38.5 38.2 101
Rawah 9020 7.3 8.0 91 18.3 16.7 110
Sage Creek Basin 7850 10.3 2.2 468 17.4 15.7 111
Sand Lake 10050 -M 31.1 * -M 28.1 *
South Brush Creek 8440 3.1 10.0 31 13.2 17.2 77
Tower 10500 49.9 49.5 101 48.9 43.6 112
Webber Springs 9250 24.0 21.9 110 32.7 29.2 112
Whiskey Park 8950 27.3 25.6 107 34.0 30.7 111
Willow Creek Pass 9540 16.4 13.8 119 18.6 15.2 122
Zirkel 9340 27.6 22.1 125 39.5 30.4 130
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Basin Index (%) 104 109
SWEETWATER
Deer Park 9700 16.3 16.3 100 20.8 22.8 91
Larsen Creek 9000 5.6 9.7 58 15.7 -M *
South Pass 9040 14.4 15.2 95 14.2 19.6 72
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Basin Index (%) 88 83
LOWER N. PLATTE
Casper Mtn. 7900 12.4 14.2 87 14.0 17.3 81
Laprele Creek 8375 8.3 7.2 115 15.6 14.5 108
Reno Hill 8400 15.3 13.7 112 19.3 18.1 107
Windy Peak 7900 6.0 5.8 103 12.7 12.5 102
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Basin Index (%) 103 99
LARAMIE RIVER
Brooklyn Lake 10240 24.3 22.9 106 28.2 23.9 118
Cinnabar Park 9574 19.6 20.0 98 25.4 26.3 97
Crow Creek 8330 .0 .0 * 11.9 12.9 92
Deadman Hill 10220 21.3 18.3 116 21.3 20.0 106
Rawah 9020 7.3 8.0 91 18.3 16.7 110
Roach 9700 15.2 16.9 90 23.0 21.6 106
Windy Peak 7900 6.0 5.8 103 12.7 12.5 102
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Basin Index (%) 102 105
S. PLATTE
Black Mountain 8920 10.3 -M * 15.2 -M *
Crow Creek 8330 .0 .0 * 11.9 12.9 92
Deadman Hill 10220 21.3 18.3 116 21.3 20.0 106
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Basin Index (%) 116* 101
LITTLE SNAKE RIVER
Battle Mountain 7440 2.4 1.6 150 17.1 16.7 102
Divide Peak 8880 15.7 18.0 87 24.8 23.7 105
Elk River 8700 12.4 14.4 86 20.8 22.1 94
Little Snake River 8915 24.8 23.2 107 39.3 31.8 124
Old Battle 10000 37.7 34.3 110 38.5 38.2 101
Sage Creek Basin 7850 10.3 2.2 468 17.4 15.7 111
Sandstone RS 8150 7.7 8.2 94 19.1 20.2 95
Whiskey Park 8950 27.3 25.6 107 34.0 30.7 111
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Basin Index (%) 108 106
UPPER GREEN RIVER
Big Sandy Opening 9080 14.0 12.0 117 16.3 14.7 111
Blind Bull Sum 8650 24.7 24.2 102 20.9 20.8 100
East Rim Divide 7930 4.6 8.9 52 13.2 12.5 106
Elkhart Park G.S. 9400 13.4 11.8 114 15.7 14.5 108
Gros Ventre Summit 8750 7.6 12.3 62 13.6 14.1 96
Gunsight Pass 9820 14.9 13.4 111 17.6 15.5 114
Indian Creek 9425 22.7 23.8 95 20.2 24.3 83
Kendall R.S. 7740 6.0 6.3 95 12.7 15.0 85
Loomis Park 8240 12.9 11.6 111 18.7 18.4 102
New Fork Lake 8340 6.7 7.2 93 10.9 11.6 94
Pocket Creek 9360 14.5 -M * 16.7 -M *
Snider Basin 8060 5.7 10.0 57 14.5 15.2 95
Spring Creek Divide 9000 24.3 23.9 102 26.0 25.5 102
Triple Peak 8500 21.5 18.9 114 28.2 27.1 104
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Basin Index (%) 97 100
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.4 -M * 14.9 -M *
Buck Pasture 9632 15.1 -M * 22.3 -M *
EF Blacks Fork GS 9360 9.6 -M * 13.6 -M *
Hams Fork 7840 4.4 4.6 96 13.4 12.6 106
Hewinta 9500 8.7 6.5 134 17.0 15.6 109
Hickerson Park 9122 6.3 5.1 124 13.4 11.6 116
Hole-in-Rock 9168 4.2 4.6 91 12.8 11.1 115
Indian Creek 9425 22.7 23.8 95 20.2 24.3 83
Kelley R.S. 8180 12.8 11.8 108 17.8 19.6 91
Spirit Lk 10235 15.5 -M * 19.0 -M *
Steel Creek Park 10158 17.0 16.6 102 21.6 18.5 117
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Basin Index (%) 104 103
UPPER BEAR RIVER
Bear River RS 8777 6.1 -M * 17.1 -M *
Bug Lake 7987 21.0 16.2 130 26.5 21.1 126
Burts Miller Ranch 8000 -M -M * 10.0 -M *
Chalk Creek #1 9171 26.1 24.7 106 32.4 27.7 117
Hayden Fork 9130 11.9 10.4 114 25.6 23.1 111
Kelley R.S. 8180 12.8 11.8 108 17.8 19.6 91
Lily Lake 9133 12.1 9.8 123 18.3 19.0 96
Monte Cristo 8932 35.5 27.3 130 35.5 28.4 125
Salt River Summit 7640 10.8 8.4 129 18.5 17.9 103
Spring Creek Divide 9000 24.3 23.9 102 26.0 25.5 102
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Basin Index (%) 117 110
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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.