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 SUNDAY: MARCH 3 , 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 17.1 13.6 126 19.0 17.4 109
Black Bear 8170 37.8 29.9 126 37.5 31.3 120
Blind Bull Sum 8650 19.4 18.2 107 15.8 16.1 98
Cottonwood Creek 7670 17.8 17.2 103 20.7 19.8 105
East Rim Divide 7930 9.3 8.3 112 9.6 9.6 100
Grand Targhee 9260 36.4 30.5 119 27.5 25.0 110
Granite Creek 6770 17.0 13.9 122 18.2 16.6 110
Grassy Lake 7265 29.0 26.4 110 32.2 29.8 108
Gros Ventre Summit 8750 8.3 10.0 83 9.9 10.2 97
Gunsight Pass 9820 11.3 10.7 106 13.2 10.9 121
Lewis Lake Divide 7850 30.4 25.3 120 30.3 29.2 104
Phillips Bench 8200 25.5 19.9 128 -M 23.0 *
Salt River Summit 7640 11.2 10.7 105 13.0 13.6 96
Snake River Station 6920 18.2 14.4 126 22.6 18.8 120
Spring Creek Divide 9000 19.3 18.8 103 20.0 19.5 103
Thumb Divide 7980 16.0 12.4 129 15.8 14.8 107
Togwotee Pass 9580 21.1 18.1 117 21.6 19.6 110
Two Ocean Plateau 9240 26.3 21.7 121 21.2 21.9 97
Willow Creek 8080 25.0 22.6 111 28.6 27.1 106
Younts Peak 8350 -M 11.7 * -M 12.8 *
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Basin Index (%) 116 107
MADISON-GALLATIN
Black Bear 8170 37.8 29.9 126 37.5 31.3 120
Canyon 7870 11.8 10.7 110 13.6 13.2 103
Madison Plateau 7750 24.6 18.0 137 23.9 21.5 111
West Yellowstone 6700 13.1 9.1 144 15.0 11.7 128
Whiskey Creek 6800 17.0 12.1 140 17.6 16.5 107
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Basin Index (%) 131 114
YELLOWSTONE
Beartooth Lake 9360 17.4 17.1 102 16.0 15.9 101
Burnt Mtn 5880 7.5 4.1 183 11.6 9.6 121
Canyon 7870 11.8 10.7 110 13.6 13.2 103
Cole Creek 7850 13.0 10.2 127 -M 9.2 *
Evening Star 9200 22.7 19.4 117 24.6 22.3 110
Fisher Creek 9100 26.6 26.0 102 29.2 25.8 113
Northeast Entrance 7350 9.6 8.3 116 11.5 10.0 115
Parker Peak 9400 20.5 16.2 127 20.3 14.2 143
Sylvan Lake 8420 18.1 16.0 113 23.3 18.1 129
Thumb Divide 7980 16.0 12.4 129 15.8 14.8 107
Two Ocean Plateau 9240 26.3 21.7 121 21.2 21.9 97
White Mill 8700 18.7 18.5 101 16.3 19.2 85
Wolverine 7650 11.1 8.6 129 10.8 10.1 107
Younts Peak 8350 -M 11.7 * -M 12.8 *
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Basin Index (%) 116 110
WIND RIVER
Burroughs Creek 8750 9.4 -M * 10.9 -M *
Castle Creek 8400 3.6 -M * 4.9 -M *
Cold Springs 9630 5.6 5.6 100 5.9 7.5 79
Deer Park 9700 14.0 10.9 128 14.9 15.4 97
Hobbs Park 10100 11.6 9.9 117 8.4 9.6 88
Kirwin 9550 8.6 7.1 121 8.8 8.9 99
Little Warm 9370 7.2 8.1 89 6.7 9.9 68
Owl Creek 8975 4.1 4.0 102 4.5 4.4 102
South Pass 9040 11.6 11.6 100 9.8 13.6 72
St. Lawrence Alt 8620 3.3 5.3 62 7.0 6.6 106
Togwotee Pass 9580 21.1 18.1 117 21.6 19.6 110
Townsend Creek 8700 7.3 6.7 109 8.1 8.7 93
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Basin Index (%) 108 92
BIGHORN BASIN
Bald Mtn. 9380 14.5 15.0 97 10.2 13.3 77
Bear Trap Meadow 8200 6.2 4.5 138 5.3 6.2 85
Bone Springs Div 9350 11.1 12.3 90 9.2 11.9 77
Grave Springs 8550 5.8 7.0 83 6.6 8.0 82
Kirwin 9550 8.6 7.1 121 8.8 8.9 99
Marquette 8760 5.6 -M * 7.2 -M *
Middle Powder 7760 7.0 8.2 85 3.6 8.8 41
Owl Creek 8975 4.1 4.0 102 4.5 4.4 102
Powder River Pass 9480 8.4 8.0 105 7.6 9.7 78
Shell Creek 9580 11.2 11.8 95 9.6 10.7 90
Timber Creek 7950 2.9 3.9 74 4.9 5.3 92
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Basin Index (%) 98 81
SHOSHONE RIVER
Blackwater 9780 19.9 17.5 114 20.2 16.3 124
Evening Star 9200 22.7 19.4 117 24.6 22.3 110
Marquette 8760 5.6 -M * 7.2 -M *
Sylvan Lake 8420 18.1 16.0 113 23.3 18.1 129
Sylvan Road 7120 10.9 9.6 114 14.2 14.0 101
Younts Peak 8350 -M 11.7 * -M 12.8 *
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Basin Index (%) 115 116
POWDER RIVER
Bear Trap Meadow 8200 6.2 4.5 138 5.3 6.2 85
Cloud Peak Reservoir 9860 9.3 10.5 89 8.0 9.7 82
Grave Springs 8550 5.8 7.0 83 6.6 8.0 82
Hansen Sawmill 8360 4.2 4.7 89 5.7 6.2 92
Middle Powder 7760 7.0 8.2 85 3.6 8.8 41
Powder River Pass 9480 8.4 8.0 105 7.6 9.7 78
Soldier Park 8720 2.7 -M * 5.3 -M *
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Basin Index (%) 95 76
TONGUE RIVER
Big Goose 7990 5.7 6.3 90 7.6 8.0 95
Bone Springs Div 9350 11.1 12.3 90 9.2 11.9 77
Burgess Junction 7880 6.6 8.4 79 6.6 9.1 73
Dome Lake 8880 6.6 8.8 75 6.1 10.0 61
Little Goose 8870 7.0 -M * 6.1 -M *
Sucker Creek 8880 8.4 9.1 92 7.5 10.7 70
Tie Creek 6870 3.3 4.4 75 7.7 8.6 90
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Basin Index (%) 85 77
BELLE FOURCHE
Blind Park 6890 7.0 6.4 109 5.8 9.5 61
Cole Canyon 5910 5.3 4.9 108 9.0 7.2 125
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Basin Index (%) 109 89
CHEYENNE RIVER BASIN
Blind Park 6890 7.0 6.4 109 5.8 9.5 61
North Rapid Creek 6130 5.5 6.0 92 5.5 7.7 71
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Basin Index (%) 101 66
UPPER N. PLATTE
Arapaho Ridge 10960 20.0 16.9 118 20.4 17.9 114
Blackhall Mtn 9820 25.5 -M * 27.0 -M *
Columbine 9160 23.2 20.1 115 23.6 20.6 115
Divide Peak 8880 16.1 16.1 100 18.7 16.9 111
Joe Wright 10120 16.8 16.9 99 24.3 20.1 121
Laprele Creek 8375 9.1 7.8 117 9.7 9.4 103
Med Bow 10500 29.6 -M * 27.5 -M *
Never Summer 10280 17.2 16.3 106 14.9 -M *
North French Creek 10130 23.4 21.2 110 24.1 21.2 114
Old Battle 10000 29.0 24.2 120 29.5 28.1 105
Rawah 9020 10.9 8.8 124 13.7 11.0 125
Sage Creek Basin 7850 14.5 10.7 136 14.2 11.8 120
Sand Lake 10050 22.4 21.3 105 18.7 19.1 98
South Brush Creek 8440 8.9 10.4 86 9.5 11.8 81
Tower 10500 42.3 36.7 115 35.2 32.3 109
Webber Springs 9250 20.9 18.9 111 24.8 21.3 116
Whiskey Park 8950 -M 21.8 * -M 22.6 *
Willow Creek Pass 9540 12.0 9.7 124 13.6 10.5 130
Zirkel 9340 26.9 23.3 115 30.5 23.6 129
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Basin Index (%) 112 113
SWEETWATER
Deer Park 9700 14.0 10.9 128 14.9 15.4 97
Larsen Creek 9000 9.6 9.7 99 12.6 -M *
South Pass 9040 11.6 11.6 100 9.8 13.6 72
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Basin Index (%) 109 85
LOWER N. PLATTE
Casper Mtn. 7900 10.9 10.4 105 8.9 11.2 79
Laprele Creek 8375 9.1 7.8 117 9.7 9.4 103
Reno Hill 8400 11.0 10.3 107 11.5 11.2 103
Windy Peak 7900 6.7 5.8 116 7.3 7.8 94
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Basin Index (%) 110 94
LARAMIE RIVER
Brooklyn Lake 10240 18.5 15.3 121 19.7 16.2 122
Cinnabar Park 9574 16.8 17.3 97 19.3 19.8 97
Crow Creek 8330 3.8 6.8 56 7.6 7.9 96
Deadman Hill 10220 15.8 12.5 126 14.7 12.9 114
Rawah 9020 10.9 8.8 124 13.7 11.0 125
Roach 9700 13.2 12.6 105 16.2 14.8 109
Windy Peak 7900 6.7 5.8 116 7.3 7.8 94
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Basin Index (%) 108 109
S. PLATTE
Black Mountain 8920 8.4 -M * 9.3 -M *
Crow Creek 8330 3.8 6.8 56 7.6 7.9 96
Deadman Hill 10220 15.8 12.5 126 14.7 12.9 114
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Basin Index (%) 102 107
LITTLE SNAKE RIVER
Battle Mountain 7440 11.2 9.9 113 13.6 12.2 111
Divide Peak 8880 16.1 16.1 100 18.7 16.9 111
Elk River 8700 16.3 15.8 103 15.4 16.1 96
Little Snake River 8915 23.3 19.8 118 31.2 25.2 124
Old Battle 10000 29.0 24.2 120 29.5 28.1 105
Sage Creek Basin 7850 14.5 10.7 136 14.2 11.8 120
Sandstone RS 8150 14.2 10.7 133 15.1 15.2 99
Whiskey Park 8950 -M 21.8 * -M 22.6 *
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Basin Index (%) 116 110
UPPER GREEN RIVER
Big Sandy Opening 9080 11.7 10.2 115 12.4 10.6 117
Blind Bull Sum 8650 19.4 18.2 107 15.8 16.1 98
East Rim Divide 7930 9.3 8.3 112 9.6 9.6 100
Elkhart Park G.S. 9400 10.6 9.5 112 11.4 10.6 108
Gros Ventre Summit 8750 8.3 10.0 83 9.9 10.2 97
Gunsight Pass 9820 11.3 10.7 106 13.2 10.9 121
Indian Creek 9425 17.7 19.1 93 14.3 18.0 79
Kendall R.S. 7740 9.9 9.9 100 10.3 11.8 87
Loomis Park 8240 13.9 11.9 117 14.8 14.2 104
New Fork Lake 8340 8.4 8.3 101 7.7 8.8 88
Pocket Creek 9360 12.0 -M * 13.0 -M *
Snyder Basin 8060 9.9 9.9 100 11.6 11.7 99
Spring Creek Divide 9000 19.3 18.8 103 20.0 19.5 103
Triple Peak 8500 19.7 17.1 115 21.7 20.5 106
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Basin Index (%) 105 100
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.3 -M * 10.2 -M *
Buck Pasture 9632 12.4 -M * 15.0 -M *
EF Blacks Fork GS 9360 9.8 -M * 8.4 -M *
Hams Fork 7840 8.5 9.4 90 9.0 9.2 98
Hewinta 9500 8.8 8.0 110 11.6 11.0 105
Hickerson Park 9122 6.5 6.0 108 8.9 7.6 117
Hole-in-Rock 9168 5.4 5.7 95 8.4 7.2 117
Indian Creek 9425 17.7 19.1 93 14.3 18.0 79
Kelley R.S. 8180 11.3 12.2 93 11.9 14.7 81
Spirit Lk 10235 12.5 -M * 12.8 -M *
Steel Creek Park 10158 12.1 11.7 103 14.3 12.6 113
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Basin Index (%) 98 98
UPPER BEAR RIVER
Bear River RS 8777 8.9 -M * 11.9 -M *
Bug Lake 7987 18.5 15.0 123 18.8 15.6 121
Burts Miller Ranch 8000 6.1 -M * 7.0 -M *
Chalk Creek #1 9171 19.7 18.6 106 23.9 19.8 121
Hayden Fork 9130 14.3 12.3 116 19.1 16.6 115
Kelley R.S. 8180 11.3 12.2 93 11.9 14.7 81
Lily Lake 9133 10.2 10.5 97 13.3 13.4 99
Monte Cristo 8932 25.3 21.5 118 24.4 20.8 117
Salt River Summit 7640 11.2 10.7 105 13.0 13.6 96
Spring Creek Divide 9000 19.3 18.8 103 20.0 19.5 103
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Basin Index (%) 109 108
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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.