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: MARCH 29 , 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 17.7 14.7 120 20.7 19.9 104
Black Bear 8170 41.5 35.4 117 40.8 36.1 113
Blind Bull Sum 8650 22.0 21.8 101 17.7 18.5 96
Cottonwood Creek 7670 19.2 20.9 92 23.5 23.3 101
East Rim Divide 7930 10.3 9.8 105 10.5 11.2 94
Grand Targhee 9260 40.1 35.4 113 29.9 28.7 104
Granite Creek 6770 18.6 14.9 125 19.7 18.9 104
Grassy Lake 7265 32.5 31.3 104 35.3 34.2 103
Gros Ventre Summit 8750 8.4 12.6 67 11.3 12.2 93
Gunsight Pass 9820 12.1 13.1 92 14.4 12.9 112
Lewis Lake Divide 7850 33.5 29.3 114 35.8 33.6 107
Phillips Bench 8200 27.9 23.8 117 30.3 26.7 113
Salt River Summit 7640 13.1 12.7 103 14.8 15.8 94
Snake River Station 6920 19.6 15.8 124 24.2 21.4 113
Spring Creek Divide 9000 21.7 22.4 97 22.2 22.6 98
Thumb Divide 7980 18.0 15.1 119 17.7 17.5 101
Togwotee Pass 9580 22.7 21.5 106 23.3 22.9 102
Two Ocean Plateau 9240 28.5 25.3 113 24.1 25.8 93
Willow Creek 8080 29.4 27.0 109 32.1 31.6 102
Younts Peak 8350 -M 13.9 * -M 14.9 *
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Basin Index (%) 108 103
MADISON-GALLATIN
Black Bear 8170 41.5 35.4 117 40.8 36.1 113
Canyon 7870 13.1 12.2 107 14.9 15.2 98
Madison Plateau 7750 26.4 21.1 125 26.0 24.9 104
West Yellowstone 6700 13.5 10.2 132 16.1 13.3 121
Whiskey Creek 6800 19.0 14.8 128 19.3 19.1 101
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Basin Index (%) 121 108
YELLOWSTONE
Beartooth Lake 9360 18.9 20.7 91 17.5 18.5 95
Burnt Mtn 5880 7.9 4.5 176 12.2 11.6 105
Canyon 7870 13.1 12.2 107 14.9 15.2 98
Cole Creek 7850 14.4 13.0 111 -M 11.7 *
Evening Star 9200 24.1 23.8 101 26.6 25.7 104
Fisher Creek 9100 29.0 29.4 99 31.8 30.0 106
Northeast Entrance 7350 9.6 9.8 98 12.4 11.5 108
Parker Peak 9400 -M 18.5 * -M 16.5 *
Sylvan Lake 8420 20.1 18.9 106 25.6 21.0 122
Thumb Divide 7980 18.0 15.1 119 17.7 17.5 101
Two Ocean Plateau 9240 28.5 25.3 113 24.1 25.8 93
White Mill 8700 20.6 21.3 97 17.8 22.3 80
Wolverine 7650 11.2 8.9 126 11.8 11.4 104
Younts Peak 8350 -M 13.9 * -M 14.9 *
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Basin Index (%) 106 101
WIND RIVER
Burroughs Creek 8750 10.0 -M * 11.9 -M *
Castle Creek 8400 4.2 -M * 5.4 -M *
Cold Springs 9630 6.3 7.1 89 6.7 9.2 73
Deer Park 9700 14.6 14.3 102 16.5 18.3 90
Hobbs Park 10100 13.1 13.0 101 9.9 12.1 82
Kirwin 9550 9.9 9.1 109 10.3 10.7 96
Little Warm 9370 8.3 10.1 82 8.2 12.0 68
Owl Creek 8975 4.3 5.1 84 5.3 5.5 96
South Pass 9040 12.6 14.6 86 10.8 16.3 66
St. Lawrence Alt 8620 4.1 6.7 61 7.7 8.2 94
Togwotee Pass 9580 22.7 21.5 106 23.3 22.9 102
Townsend Creek 8700 8.3 8.8 94 9.5 11.0 86
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Basin Index (%) 94 86
BIGHORN BASIN
Bald Mtn. 9380 15.7 17.8 88 11.6 15.9 73
Bear Trap Meadow 8200 7.1 5.1 139 6.7 7.7 87
Bone Springs Div 9350 12.3 15.1 81 10.7 14.4 74
Grave Springs 8550 7.7 8.6 90 8.6 9.7 89
Kirwin 9550 9.9 9.1 109 10.3 10.7 96
Marquette 8760 6.8 -M * 8.2 -M *
Middle Powder 7760 8.4 10.8 78 -M 10.8 *
Owl Creek 8975 4.3 5.1 84 5.3 5.5 96
Powder River Pass 9480 8.9 9.8 91 8.2 11.6 71
Shell Creek 9580 12.2 14.0 87 10.7 12.8 84
Timber Creek 7950 3.3 4.5 73 5.4 6.8 79
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Basin Index (%) 90 81
SHOSHONE RIVER
Blackwater 9780 22.2 21.7 102 22.4 19.2 117
Evening Star 9200 24.1 23.8 101 26.6 25.7 104
Marquette 8760 6.8 -M * 8.2 -M *
Sylvan Lake 8420 20.1 18.9 106 25.6 21.0 122
Sylvan Road 7120 11.1 11.0 101 15.2 15.8 96
Younts Peak 8350 -M 13.9 * -M 14.9 *
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Basin Index (%) 103 110
POWDER RIVER
Bear Trap Meadow 8200 7.1 5.1 139 6.7 7.7 87
Cloud Peak Reservoir 9860 11.3 13.7 82 10.0 12.2 82
Grave Springs 8550 7.7 8.6 90 8.6 9.7 89
Hansen Sawmill 8360 5.3 6.2 85 6.8 7.9 86
Middle Powder 7760 8.4 10.8 78 -M 10.8 *
Powder River Pass 9480 8.9 9.8 91 8.2 11.6 71
Soldier Park 8720 3.9 -M * 6.3 -M *
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Basin Index (%) 90 82
TONGUE RIVER
Big Goose 7990 7.5 8.4 89 9.1 10.1 90
Bone Springs Div 9350 12.3 15.1 81 10.7 14.4 74
Burgess Junction 7880 8.0 10.9 73 8.0 11.4 70
Dome Lake 8880 8.2 11.2 73 7.2 12.5 58
Little Goose 8870 8.7 -M * 7.2 -M *
Sucker Creek 8880 10.3 11.2 92 9.4 13.2 71
Tie Creek 6870 4.2 5.4 78 9.1 10.5 87
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Basin Index (%) 81 74
BELLE FOURCHE
Blind Park 6890 7.0 7.2 97 7.4 11.0 67
Cole Canyon 5910 6.4 5.7 112 10.8 8.4 129
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Basin Index (%) 104 94
CHEYENNE RIVER BASIN
Blind Park 6890 7.0 7.2 97 7.4 11.0 67
North Rapid Creek 6130 6.4 6.7 96 6.6 9.0 73
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Basin Index (%) 96 70
UPPER N. PLATTE
Arapaho Ridge 10960 25.9 19.3 134 25.4 20.8 122
Blackhall Mtn 9820 31.7 -M * 32.2 -M *
Columbine 9160 29.9 22.3 134 28.1 24.0 117
Divide Peak 8880 20.5 19.1 107 22.5 20.1 112
Joe Wright 10120 21.7 19.9 109 29.1 24.2 120
Laprele Creek 8375 12.4 9.4 132 13.3 11.5 116
Med Bow 10500 36.8 -M * 33.0 -M *
Never Summer 10280 22.4 19.1 117 18.5 -M *
North French Creek 10130 29.4 27.3 108 29.1 25.2 115
Old Battle 10000 35.2 28.6 123 35.8 32.9 109
Rawah 9020 14.4 10.1 143 17.2 13.1 131
Sage Creek Basin 7850 18.5 12.5 148 16.1 13.6 118
Sand Lake 10050 28.4 26.7 106 24.0 23.1 104
South Brush Creek 8440 11.3 12.1 93 12.0 14.2 85
Tower 10500 49.9 42.7 117 -M 37.5 *
Webber Springs 9250 26.0 22.6 115 30.3 25.1 121
Whiskey Park 8950 -M 25.0 * -M 26.4 *
Willow Creek Pass 9540 16.0 11.6 138 17.1 12.5 137
Zirkel 9340 33.0 26.2 126 36.3 26.8 135
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Basin Index (%) 120 117
SWEETWATER
Deer Park 9700 14.6 14.3 102 16.5 18.3 90
Larsen Creek 9000 10.7 11.9 90 13.7 -M *
South Pass 9040 12.6 14.6 86 10.8 16.3 66
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Basin Index (%) 93 79
LOWER N. PLATTE
Casper Mtn. 7900 14.2 12.9 110 11.3 13.7 82
Laprele Creek 8375 12.4 9.4 132 13.3 11.5 116
Reno Hill 8400 15.3 12.8 120 15.7 14.1 111
Windy Peak 7900 10.4 7.7 135 11.2 9.7 115
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Basin Index (%) 122 105
LARAMIE RIVER
Brooklyn Lake 10240 23.7 19.1 124 24.7 19.6 126
Cinnabar Park 9574 20.0 19.6 102 22.7 22.7 100
Crow Creek 8330 5.6 6.8 82 9.9 9.9 100
Deadman Hill 10220 21.2 15.1 140 19.4 16.0 121
Rawah 9020 14.4 10.1 143 17.2 13.1 131
Roach 9700 17.3 15.0 115 20.9 17.9 117
Windy Peak 7900 10.4 7.7 135 11.2 9.7 115
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Basin Index (%) 121 116
S. PLATTE
Black Mountain 8920 11.5 -M * 12.4 -M *
Crow Creek 8330 5.6 6.8 82 9.9 9.9 100
Deadman Hill 10220 21.2 15.1 140 19.4 16.0 121
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Basin Index (%) 122 113
LITTLE SNAKE RIVER
Battle Mountain 7440 12.7 10.9 117 15.9 14.2 112
Divide Peak 8880 20.5 19.1 107 22.5 20.1 112
Elk River 8700 20.0 18.0 111 19.0 18.9 101
Little Snake River 8915 29.0 22.3 130 36.3 27.8 131
Old Battle 10000 35.2 28.6 123 35.8 32.9 109
Sage Creek Basin 7850 18.5 12.5 148 16.1 13.6 118
Sandstone RS 8150 16.9 13.1 129 18.2 17.4 105
Whiskey Park 8950 -M 25.0 * -M 26.4 *
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Basin Index (%) 123 113
UPPER GREEN RIVER
Big Sandy Opening 9080 12.9 12.2 106 13.8 12.5 110
Blind Bull Sum 8650 22.0 21.8 101 17.7 18.5 96
East Rim Divide 7930 10.3 9.8 105 10.5 11.2 94
Elkhart Park G.S. 9400 12.0 11.7 103 12.7 12.5 102
Gros Ventre Summit 8750 8.4 12.6 67 11.3 12.2 93
Gunsight Pass 9820 12.1 13.1 92 14.4 12.9 112
Indian Creek 9425 21.1 23.2 91 16.9 21.3 79
Kendall R.S. 7740 10.5 11.3 93 11.1 13.6 82
Loomis Park 8240 15.2 14.4 106 16.0 16.4 98
New Fork Lake 8340 9.3 10.2 91 8.8 10.2 86
Pocket Creek 9360 13.9 -M * 14.5 -M *
Snider Basin 8060 11.3 11.8 96 12.9 13.4 96
Spring Creek Divide 9000 21.7 22.4 97 22.2 22.6 98
Triple Peak 8500 21.8 21.1 103 23.6 24.0 98
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Basin Index (%) 96 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.7 -M * 11.9 -M *
Buck Pasture 9632 14.1 -M * 17.1 -M *
EF Blacks Fork GS 9360 11.3 -M * 10.0 -M *
Hams Fork 7840 10.2 10.6 96 10.8 10.8 100
Hewinta 9500 11.9 10.4 114 13.6 13.1 104
Hickerson Park 9122 8.5 7.2 118 10.6 9.4 113
Hole-in-Rock 9168 6.1 7.0 87 9.8 8.9 110
Indian Creek 9425 21.1 23.2 91 16.9 21.3 79
Kelley R.S. 8180 14.3 14.7 97 14.6 17.2 85
Spirit Lk 10235 15.2 -M * 15.6 -M *
Steel Creek Park 10158 14.5 14.6 99 16.9 15.3 110
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Basin Index (%) 99 97
UPPER BEAR RIVER
Bear River RS 8777 10.4 -M * 13.9 -M *
Bug Lake 7987 23.2 17.9 130 22.6 18.3 123
Burts Miller Ranch 8000 6.7 -M * 8.1 -M *
Chalk Creek #1 9171 24.0 22.7 106 27.8 23.6 118
Hayden Fork 9130 16.0 14.8 108 21.8 19.7 111
Kelley R.S. 8180 14.3 14.7 97 14.6 17.2 85
Lily Lake 9133 11.8 11.9 99 15.1 16.0 94
Monte Cristo 8932 31.8 25.6 124 29.8 24.5 122
Salt River Summit 7640 13.1 12.7 103 14.8 15.8 94
Spring Creek Divide 9000 21.7 22.4 97 22.2 22.6 98
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Basin Index (%) 109 107
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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.