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: FEBRUARY 1 , 1998
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 13.4 12.5 107 15.7 16.3 96
COTTONWOOD CREEK 7600 14.7 14.0 105 15.9 17.3 92
GRANITE CREEK 6770 12.6 12.3 102 14.8 17.2 86
GRASSY LAKE 7265 23.9 23.0 104 24.7 26.4 94
GROS VENTRE SUMMIT 8775 7.3 10.6 69 -M 11.6 *
LEWIS LAKE DIVIDE 7860 21.0 22.8 92 22.5 26.9 84
PHILLIPS BENCH 8200 19.0 19.4 98 19.2 21.3 90
SALT RIVER SUMMIT 7600 10.2 9.0 113 12.2 12.3 99
SNAKE RIVER STATION 6920 12.8 12.4 103 15.7 18.6 84
SPRING CREEK DIVIDE 9000 15.3 18.2 84 15.6 19.4 80
THUMB DIVIDE 7980 11.2 11.4 98 12.4 15.3 81
TOGWOTEE PASS 9580 13.5 16.9 80 15.3 20.1 76
TWO OCEAN PLATEAU 9360 20.1 18.3 110 20.4 22.5 91
WILLOW CREEK 8450 18.6 21.0 89 21.4 22.8 94
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Basin wide percent of average 96 88
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 15.3 16.0 96 13.2 12.1 109
BLACK BEAR 7950 26.5 24.5 108 24.9 26.5 94
CANYON 7940 9.5 8.3 114 11.0 9.9 111
FISHER CREEK 9100 23.1 24.2 95 20.5 24.6 83
MADISON PLATEAU 7750 13.9 16.1 86 15.3 17.3 88
NORTHEAST ENTRANCE 7350 5.4 6.4 84 9.5 8.3 114
PARKER PEAK 9400 13.7 14.3 96 11.8 10.5 112
SYLVAN LAKE 8420 11.9 14.9 80 14.5 13.2 110
THUMB DIVIDE 7980 11.2 11.4 98 12.4 15.3 81
TWO OCEAN PLATEAU 9360 20.1 18.3 110 20.4 22.5 91
WHISKEY CREEK 6800 9.5 11.2 85 12.1 14.4 84
WHITE MILL 8700 17.5 16.8 104 16.2 19.3 84
WOLVERINE 7650 8.0 7.9 101 8.3 8.8 94
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Basin wide percent of average 98 94
WIND RIVER
BURROUGHS CREEK 8750 11.4 10.4 110 12.6 11.3 112
COLD SPRINGS 9630 6.7 5.8 116 7.5 6.9 109
DEER PARK 9700 -M -M * 12.7 -M *
HOBBS PARK 10100 9.4 10.0 94 8.3 9.2 90
LITTLE WARM 9620 7.3 7.2 101 9.1 8.9 102
SOUTH PASS 9040 9.6 11.3 85 10.7 10.8 99
ST. LAWRENCE ALT 8620 6.6 4.8 138 6.5 6.3 103
TOGWOTEE PASS 9580 13.5 16.9 80 15.3 20.1 76
TOWNSEND CREEK 8700 6.8 6.2 110 8.2 7.8 105
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Basin wide percent of average 98 96
BIGHORN BASIN
BALD MTN. 9375 13.4 13.8 97 11.9 11.7 102
BEAR TRAP MEADOW 7900 3.5 4.8 73 4.3 5.4 80
BLACKWATER 9780 15.8 14.0 113 13.8 12.2 113
BONE SPRINGS DIV 9350 10.4 10.6 98 10.8 9.4 115
EVENING STAR 9200 17.7 17.8 99 19.1 15.3 125
GRAVE SPRINGS 8550 4.8 -M * 5.2 6.4 81
KIRWIN 9550 9.1 6.6 138 10.2 6.8 150
MARQUETTE 8760 8.7 5.1 171 9.0 5.8 155
MIDDLE POWDER 7760 5.8 7.8 74 6.4 7.8 82
OWL CREEK 8975 4.1 2.8 146 4.0 3.8 105
POWDER RIVER PASS 9480 6.6 7.0 94 7.5 7.8 96
SHELL CREEK 9580 9.3 10.2 91 7.4 8.9 83
SYLVAN LAKE 8420 11.9 14.9 80 14.5 13.2 110
SYLVAN ROAD 8120 7.8 8.5 92 11.7 11.1 105
TIMBER CREEK 7950 5.6 3.6 156 6.9 4.2 164
YOUNTS PEAK 8350 11.6 12.2 95 11.5 11.3 102
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Basin wide percent of average 101 109
SHOSHONE RIVER
BLACKWATER 9780 15.8 14.0 113 13.8 12.2 113
EVENING STAR 9200 17.7 17.8 99 19.1 15.3 125
KIRWIN 9550 9.1 6.6 138 10.2 6.8 150
MARQUETTE 8760 8.7 5.1 171 9.0 5.8 155
SYLVAN LAKE 8420 11.9 14.9 80 14.5 13.2 110
SYLVAN ROAD 8120 7.8 8.5 92 11.7 11.1 105
YOUNTS PEAK 8350 11.6 12.2 95 11.5 11.3 102
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Basin wide percent of average 104 119
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.5 4.8 73 4.3 5.4 80
BONE SPRINGS DIV 9350 10.4 10.6 98 10.8 9.4 115
BURGESS JUNCTION 7880 6.6 7.6 87 7.9 7.1 111
CLOUD PEAK RESERVOIR 9860 8.3 8.0 104 9.0 8.1 111
DOME LAKE 8880 6.8 9.0 76 9.0 8.7 103
GRAVE SPRINGS 8550 4.8 -M * 5.2 6.4 81
HANSEN SAWMILL 8760 4.5 4.6 98 5.5 5.0 110
MIDDLE POWDER 7760 5.8 7.8 74 6.4 7.8 82
POWDER RIVER PASS 9480 6.6 7.0 94 7.5 7.8 96
SUCKER CREEK 8880 7.8 7.5 104 9.4 8.6 109
TIE CREEK 6870 5.1 -M * 8.7 6.8 128
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Basin wide percent of average 90 103
BELLE FOURCHE
BLIND PARK 6890 5.4 7.2 75 7.8 6.1 128
NORTH RAPID CREEK 6130 5.4 -M * 6.3 -M *
WARREN PEAK 6520 6.0 7.2 83 6.4 5.2 123
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Basin wide percent of average 79 126
UPPER N. PLATTE RIVER
COLUMBINE 9400 14.2 15.8 90 15.2 16.4 93
DIVIDE PEAK 8800 11.2 13.3 84 13.0 16.1 81
ELK RIVER 8700 9.8 12.5 78 11.2 12.5 90
JOE WRIGHT 10120 12.6 14.0 90 15.2 16.5 92
NORTH FRENCH CREEK 10100 17.6 16.0 110 17.1 15.1 113
OLD BATTLE 10000 18.6 20.5 91 22.9 19.4 118
SOUTH BRUSH CREEK 8400 5.2 7.1 73 6.2 10.7 58
TOWER 10500 27.7 30.0 92 24.5 24.1 102
WEBBER SPRINGS 9200 13.4 17.4 77 17.2 16.6 104
WILLOW CREEK PASS 9540 4.2 7.3 58 4.7 7.8 60
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Basin wide percent of average 87 95
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 11.8 16.0 74 13.3 12.1 110
CASPER MTN. 7900 8.8 9.4 94 8.7 8.6 101
DEADMAN HILL 10220 9.8 11.1 88 9.3 10.3 90
DEER PARK 9700 -M -M * 12.7 -M *
LAPRELE CREEK 8320 5.6 6.6 85 6.7 7.6 88
RENO HILL 8400 8.2 8.3 99 7.4 11.4 65
ROACH 9700 9.6 11.0 87 11.5 14.2 81
SAND LAKE 10080 16.5 21.2 78 15.0 13.0 115
SOUTH PASS 9040 9.6 11.3 85 10.7 10.8 99
WINDY PEAK 7840 4.1 4.5 91 5.2 5.9 88
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Basin wide percent of average 85 94
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.9 7.3 81 9.8 10.9 90
DIVIDE PEAK 8800 11.2 13.3 84 13.0 16.1 81
OLD BATTLE 10000 18.6 20.5 91 22.9 19.4 118
SANDSTONE RS 8150 8.8 9.3 95 12.1 13.3 91
WHISKEY PARK 8950 17.7 18.4 96 18.4 20.0 92
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Basin wide percent of average 90 96
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.1 9.6 74 6.4 11.9 54
BLIND BULL SUM 8650 17.4 19.0 92 13.4 16.8 80
EAST RIM DIVIDE 7930 7.3 9.3 78 7.5 11.1 68
ELKHART PARK G.S. 9400 8.0 8.9 90 8.5 11.7 73
GROS VENTRE SUMMIT 8775 7.3 10.6 69 -M 11.6 *
KENDALL R.S. 7740 10.2 9.9 103 10.3 11.3 91
LOOMIS PARK 8240 9.6 11.6 83 10.7 13.8 78
NEW FORK LAKE 8340 6.9 7.9 87 7.0 10.6 66
SNIDER BASIN 8250 8.3 9.9 84 8.6 11.1 77
SPRING CREEK DIVIDE 9000 15.3 18.2 84 15.6 19.4 80
TRIPLE PEAK 8500 15.7 17.4 90 15.8 22.7 70
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Basin wide percent of average 85 74
LOWER GREEN RIVER
HAMS FORK 7840 7.8 8.1 96 6.8 9.8 69
HEWINTA 9500 7.9 6.2 127 10.5 8.4 125
HICKERSON PARK 9150 6.3 3.5 180 8.3 6.0 138
HOLE-IN-ROCK 9150 4.6 3.2 144 7.3 6.0 122
INDIAN CREEK 9425 16.0 17.9 89 12.5 18.3 68
KELLEY R.S. 8180 10.4 10.7 97 10.9 13.7 80
STEEL CREEK PARK 10100 9.6 9.8 98 12.4 8.6 144
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Basin wide percent of average 105 97
UPPER BEAR RIVER
BUG LAKE 7950 14.5 12.9 112 14.2 12.8 111
HAYDEN FORK 9400 8.7 10.2 85 13.2 11.9 111
KELLEY R.S. 8180 10.4 10.7 97 10.9 13.7 80
LILY LAKE 9050 8.7 8.1 107 10.9 9.5 115
MONTE CRISTO 8960 19.9 17.3 115 17.8 16.5 108
SALT RIVER SUMMIT 7600 10.2 9.0 113 12.2 12.3 99
TRIAL LAKE 9960 12.7 15.8 80 13.9 15.2 91
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Basin wide percent of average 101 101
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-M = Missing data
* = Data may not provide a valid measure of conditions.
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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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.