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: NOVEMBER 14 , 2018
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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 1.5 1.5 100* 3.6 3.8 95
Black Bear 8170 3.2 5.5 58 6.0 6.8 88
Blind Bull Sum 8650 2.0 2.9 69 3.2 3.5 91
Cottonwood Creek 7670 2.4 2.2 109 4.7 4.5 104
East Rim Divide 7930 .6 1.0 60* 2.2 2.3 96
Grand Targhee 9260 7.5 7.0 107 8.5 8.0 106
Granite Creek 6770 1.0 1.1 91* 3.7 3.4 109
Grassy Lake 7265 2.0 3.3 61 5.6 6.2 90
Gros Ventre Summit 8750 .9 2.6 35 2.0 2.9 69
Gunsight Pass 9820 1.2 2.3 52 3.5 3.2 109
Lewis Lake Divide 7850 1.8 3.3 55 5.4 6.1 89
Phillips Bench 8200 1.6 2.8 57 5.3 4.6 115
Salt River Summit 7640 .6 .8 75* 2.8 2.8 100
Snake River Station 6920 1.2 1.2 100* 5.2 4.2 124
Spring Creek Divide 9000 2.7 2.9 93 4.5 4.2 107
Thumb Divide 7980 .5 1.8 28 3.1 3.6 86
Togwotee Pass 9580 4.7 4.4 107 5.8 4.9 118
Two Ocean Plateau 9240 4.8 5.3 91 4.6 5.3 87
Willow Creek 8080 2.8 3.0 93 6.9 6.2 111
Younts Peak 8350 -M 2.7 * -M 3.6 *
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Basin Index (%) 78 100
MADISON-GALLATIN
Black Bear 8170 3.2 5.5 58 6.0 6.8 88
Canyon 7870 1.1 1.6 69 3.1 3.3 94
Madison Plateau 7750 1.8 2.7 67 3.9 4.7 83
West Yellowstone 6700 -M .9 * -M 3.0 *
Whiskey Creek 6800 .4 1.6 25 1.7 3.9 44
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Basin Index (%) 57 79
YELLOWSTONE
Beartooth Lake 9360 4.0 4.3 93 3.5 3.7 95
Burnt Mtn 5880 .7 .0 * 3.7 4.2 88
Canyon 7870 1.1 1.6 69 3.1 3.3 94
Cole Creek 7850 3.4 3.4 100 3.4 4.0 85
Evening Star 9200 5.4 4.2 129 7.7 5.6 138
Fisher Creek 9100 4.9 5.2 94 8.2 6.1 134
Northeast Entrance 7350 1.8 .7 257* 4.3 2.8 154
Parker Peak 9400 5.0 4.0 125 6.2 4.0 155
Sylvan Lake 8420 4.1 3.1 132 7.9 4.9 161
Thumb Divide 7980 .5 1.8 28 3.1 3.6 86
Two Ocean Plateau 9240 4.8 5.3 91 4.6 5.3 87
White Mill 8700 3.8 3.8 100 4.1 4.8 85
Wolverine 7650 1.1 .8 138* 3.3 2.9 114
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Basin Index (%) 106 114
WIND RIVER
Burroughs Creek 8750 .9 -M * 2.1 -M *
Castle Creek 8400 .1 -M * 1.2 -M *
Cold Springs 9630 1.4 1.6 88 2.0 2.8 71
Deer Park 9700 1.7 3.0 57 2.5 4.3 58
Hobbs Park 10100 2.2 3.0 73 2.5 3.3 76
Kirwin 9550 1.2 2.5 48 1.7 2.9 59
Little Warm 9370 1.2 2.0 60 2.8 3.0 93
Owl Creek 8975 1.5 1.2 125 2.1 1.7 124
South Pass 9040 1.2 2.5 48 2.3 3.7 62
St. Lawrence Alt 8620 .4 1.3 31 2.7 2.4 112
Togwotee Pass 9580 4.7 4.4 107 5.8 4.9 118
Townsend Creek 8700 1.8 1.6 112 3.6 3.1 116
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Basin Index (%) 75 87
BIGHORN BASIN
Bald Mtn. 9380 5.4 4.2 129 3.8 3.9 97
Bear Trap Meadow 8200 1.9 .9 211 2.8 2.4 117
Bone Springs Div 9350 3.9 3.8 103 3.7 3.8 97
Grave Springs 8550 1.6 1.4 114 -M 3.0 *
Kirwin 9550 1.2 2.5 48 1.7 2.9 59
Marquette 8760 1.0 -M * 1.9 -M *
Middle Powder 7760 2.5 1.7 147 2.6 3.4 76
Owl Creek 8975 1.5 1.2 125 2.1 1.7 124
Powder River Pass 9480 2.7 2.0 135 3.0 3.1 97
Shell Creek 9580 4.8 3.8 126 4.6 3.4 135
Timber Creek 7950 .4 1.1 36 1.9 2.6 73
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Basin Index (%) 115 96
SHOSHONE RIVER
Blackwater 9780 5.9 4.3 137 6.5 4.5 144
Evening Star 9200 5.4 4.2 129 7.7 5.6 138
Marquette 8760 1.0 -M * 1.9 -M *
Sylvan Road 7120 1.5 1.2 125 4.1 3.8 108
Younts Peak 8350 -M 2.7 * -M 3.6 *
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Basin Index (%) 132 132
POWDER RIVER
Bear Trap Meadow 8200 1.9 .9 211 2.8 2.4 117
Cloud Peak Reservoir 9860 3.9 2.8 139 4.1 3.7 111
Grave Springs 8550 1.6 1.4 114 -M 3.0 *
Hansen Sawmill 8360 .5 .9 56 2.3 2.5 92
Middle Powder 7760 2.5 1.7 147 2.6 3.4 76
Powder River Pass 9480 2.7 2.0 135 3.0 3.1 97
Soldier Park 8720 .5 -M * 2.3 -M *
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Basin Index (%) 135 98
TONGUE RIVER
Big Goose 7990 1.3 1.4 93 3.5 3.2 109
Bone Springs Div 9350 3.9 3.8 103 3.7 3.8 97
Burgess Junction 7880 2.0 2.1 95 3.5 3.3 106
Dome Lake 8880 2.1 2.6 81 3.1 3.8 82
Little Goose 8870 2.4 -M * 2.8 -M *
Sucker Creek 8880 3.3 2.4 138 3.7 3.7 100
Tie Creek 6870 .8 .5 160* 4.3 3.4 126
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Basin Index (%) 105 103
BELLE FOURCHE
Cole Canyon 5910 .9 .3 300* 3.5 2.8 125
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Basin Index (%) 300* 125
CHEYENNE RIVER BASIN
Blind Park 6890 1.2 1.1 109 2.0 3.5 57
North Rapid Creek 6130 .7 .9 78 1.7 3.1 55
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Basin Index (%) 95 56
UPPER N. PLATTE
Arapaho Ridge 10960 4.7 3.9 121 6.4 5.1 125
Blackhall Mtn 9820 3.9 -M * 7.3 -M *
Columbine 9160 2.9 2.2 132* 6.2 4.6 135
Divide Peak 8880 1.7 2.8 61 4.7 4.7 100
Joe Wright 10120 4.3 4.1 105 8.8 5.7 154
Laprele Creek 8375 1.9 1.4 136 3.1 3.0 103
Med Bow 10500 6.7 -M * 8.5 -M *
North French Creek 10130 6.2 4.3 144 8.4 5.2 162
Never Summer 10280 4.6 3.6 128 6.1 -M *
Old Battle 10000 5.4 5.1 106 7.7 6.6 117
Rawah 9020 1.8 1.3 138 4.5 3.7 122
Sage Creek Basin 7850 1.0 1.5 67 3.6 3.4 106
Sand Lake 10050 4.7 4.5 104 4.6 5.0 92
South Brush Creek 8440 2.0 1.4 143 3.3 3.5 94
Tower 10500 7.3 7.3 100 7.5 7.6 99
Webber Springs 9250 2.7 2.7 100 6.4 5.1 125
Willow Creek Pass 9540 3.2 2.2 145 4.6 3.1 148
Zirkel 9340 4.0 2.4 167* 7.7 6.0 128
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Basin Index (%) 115 121
SWEETWATER
Deer Park 9700 1.7 3.0 57 2.5 4.3 58
Larsen Creek 9000 .3 1.1 27* 2.3 -M *
South Pass 9040 1.2 2.5 48 2.3 3.7 62
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Basin Index (%) 48 60
LOWER N. PLATTE
Casper Mtn. 7900 2.0 2.2 91 2.8 4.0 70
Laprele Creek 8375 1.9 1.4 136 3.1 3.0 103
Reno Hill 8400 2.2 2.4 92 3.4 3.8 89
Windy Peak 7900 1.4 1.2 117 1.6 2.6 62
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Basin Index (%) 104 81
LARAMIE RIVER
Brooklyn Lake 10240 3.3 2.5 132 5.3 3.8 139
Cinnabar Park 9574 4.9 2.9 169 6.8 4.5 151
Crow Creek 8330 .4 .7 57* 2.6 2.6 100
Deadman Hill 10220 3.6 3.1 116 4.2 3.8 111
Rawah 9020 1.8 1.3 138 4.5 3.7 122
Roach 9700 2.8 2.4 117 4.6 3.8 121
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Basin Index (%) 130 126
S. PLATTE
Black Mountain 8920 1.5 -M * 2.7 -M *
Crow Creek 8330 .4 .7 57* 2.6 2.6 100
Deadman Hill 10220 3.6 3.1 116 4.2 3.8 111
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Basin Index (%) 105* 106
LITTLE SNAKE RIVER
Battle Mountain 7440 1.0 .6 167* -M 3.3 *
Divide Peak 8880 1.7 2.8 61 4.7 4.7 100
Elk River 8700 1.8 1.0 180* 3.4 3.9 87
Little Snake River 8915 2.6 2.3 113* 8.7 6.4 136
Old Battle 10000 5.4 5.1 106 7.7 6.6 117
Sage Creek Basin 7850 1.0 1.5 67 3.6 3.4 106
Sandstone RS 8150 1.6 .9 178* 3.5 3.7 95
Whiskey Park 8950 3.8 2.8 136 7.5 4.9 153
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Basin Index (%) 111 116
UPPER GREEN RIVER
Big Sandy Opening 9080 1.1 2.7 41 2.6 2.9 90
Blind Bull Sum 8650 2.0 2.9 69 3.2 3.5 91
East Rim Divide 7930 .6 1.0 60* 2.2 2.3 96
Elkhart Park G.S. 9400 1.7 2.1 81 3.4 3.0 113
Gros Ventre Summit 8750 .9 2.6 35 2.0 2.9 69
Gunsight Pass 9820 1.2 2.3 52 3.5 3.2 109
Kendall R.S. 7740 .7 1.4 50 2.1 2.7 78
Loomis Park 8240 1.8 1.9 95 -M 3.2 *
New Fork Lake 8340 .9 1.5 60 2.1 2.4 88
Pocket Creek 9360 2.4 -M * 3.5 -M *
Snyder Basin 8060 1.1 1.3 85 3.1 2.6 119
Spring Creek Divide 9000 2.7 2.9 93 4.5 4.2 107
Triple Peak 8500 3.3 2.6 127 5.4 4.3 126
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Basin Index (%) 71 100
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 2.5 -M *
Buck Pasture 9632 -M -M * -M -M *
EF Blacks Fork GS 9360 1.0 -M * 2.7 -M *
Hams Fork 7840 .6 .9 67* 2.6 2.4 108
Hewinta 9500 .0 1.0 0* 2.9 3.2 91
Hickerson Park 9122 1.0 1.0 100 3.9 2.9 134
Hole-in-Rock 9168 .4 .9 44 3.2 2.8 114
Indian Creek 9425 1.8 3.5 51 3.1 4.0 78
Kelley R.S. 8180 -M 1.6 * -M 3.3 *
Spirit Lk 10235 2.4 -M * 5.0 -M *
Steel Creek Park 10158 1.6 2.7 59 3.5 3.7 95
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Basin Index (%) 54* 101
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 3.1 -M *
Bug Lake 7987 .3 1.7 18* 4.4 3.6 122
Burts Miller Ranch 8000 1.0 -M * 1.8 -M *
Chalk Creek #1 9171 .7 3.1 23 6.1 5.1 120
Hayden Fork 9130 .4 1.4 29* 4.8 4.2 114
Kelley R.S. 8180 -M 1.6 * -M 3.3 *
Lily Lake 9133 .1 1.5 7 3.3 3.8 87
Monte Cristo 8932 .9 2.1 43* 4.1 4.7 87
Salt River Summit 7640 .6 .8 75* 2.8 2.8 100
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Basin Index (%) 28* 105
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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.