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 TUESDAY: FEBRUARY 2 , 1999
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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 15.5 12.6 123 16.6 16.4 101
COTTONWOOD CREEK 7600 14.2 14.2 100 17.2 17.5 98
GRANITE CREEK 6770 12.5 12.4 101 14.6 17.3 84
GRASSY LAKE 7265 27.5 23.5 117 27.9 26.6 105
GROS VENTRE SUMMIT 8775 9.3 10.7 87 9.5 11.7 81
LEWIS LAKE DIVIDE 7860 25.8 23.1 112 26.2 27.1 97
PHILLIPS BENCH 8200 19.8 19.6 101 19.6 21.5 91
SALT RIVER SUMMIT 7600 8.7 9.1 96 11.0 12.4 89
SNAKE RIVER STATION 6920 14.7 12.6 117 18.1 18.8 96
SPRING CREEK DIVIDE 9000 16.7 18.4 91 17.2 19.6 88
THUMB DIVIDE 7980 15.0 11.5 130 -M 15.4 *
TOGWOTEE PASS 9580 -M 17.0 * 19.7 20.3 97
TWO OCEAN PLATEAU 9360 24.0 18.5 130 20.8 22.7 92
WILLOW CREEK 8450 20.0 21.2 94 24.5 23.0 107
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Basin wide percent of average 108 95
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 18.8 16.1 117 16.9 12.2 139
BLACK BEAR 7950 31.8 24.8 128 -M 26.8 *
CANYON 7940 12.2 8.4 145 13.0 10.0 130
FISHER CREEK 9100 27.5 24.4 113 23.8 24.8 96
MADISON PLATEAU 7750 -M 16.3 * 19.9 17.5 114
NORTHEAST ENTRANCE 7350 8.6 6.5 132 10.5 8.4 125
PARKER PEAK 9400 16.5 14.4 115 -M 10.6 *
SYLVAN LAKE 8420 18.8 15.0 125 21.0 13.3 158
THUMB DIVIDE 7980 15.0 11.5 130 -M 15.4 *
TWO OCEAN PLATEAU 9360 24.0 18.5 130 20.8 22.7 92
WHISKEY CREEK 6800 13.4 11.3 119 16.1 14.5 111
WHITE MILL 8700 18.5 17.0 109 16.8 19.5 86
WOLVERINE 7650 11.5 8.0 144 9.9 8.9 111
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Basin wide percent of average 123 111
WIND RIVER
BURROUGHS CREEK 8750 11.8 10.5 112 12.9 11.4 113
COLD SPRINGS 9630 6.4 5.8 110 8.1 7.0 116
DEER PARK 9700 10.2 -M * 13.8 -M *
HOBBS PARK 10100 10.5 10.1 104 10.4 9.3 112
LITTLE WARM 9620 8.7 7.3 119 9.8 9.0 109
SOUTH PASS 9040 11.1 11.4 97 12.6 10.9 116
ST. LAWRENCE ALT 8620 4.6 4.9 94 7.3 6.4 114
TOGWOTEE PASS 9580 -M 17.0 * 19.7 20.3 97
TOWNSEND CREEK 8700 5.7 6.3 90 8.2 7.9 104
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Basin wide percent of average 104 108
BIGHORN BASIN
BALD MTN. 9375 14.1 13.9 101 13.0 11.8 110
BEAR TRAP MEADOW 7900 4.6 4.8 96 7.0 5.4 130
BLACKWATER 9780 20.8 14.1 148 18.2 12.3 148
BONE SPRINGS DIV 9350 10.9 10.7 102 11.1 9.5 117
EVENING STAR 9200 23.8 18.0 132 24.7 15.4 160
GRAVE SPRINGS 8550 4.7 6.2 76 7.8 6.4 122
KIRWIN 9550 8.3 6.7 124 9.6 6.9 139
MARQUETTE 8760 6.0 5.2 115 6.8 5.8 117
MIDDLE POWDER 7760 4.9 7.9 62 11.0 7.9 139
OWL CREEK 8975 4.1 2.8 146 4.7 3.8 124
POWDER RIVER PASS 9480 8.3 7.1 117 10.4 7.9 132
SHELL CREEK 9580 12.1 10.3 117 10.9 9.0 121
SYLVAN LAKE 8420 18.8 15.0 125 21.0 13.3 158
SYLVAN ROAD 8120 12.4 8.6 144 14.4 11.2 129
TIMBER CREEK 7950 3.8 3.7 103 5.5 4.2 131
YOUNTS PEAK 8350 14.9 12.3 121 13.2 11.4 116
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Basin wide percent of average 117 133
SHOSHONE RIVER
BLACKWATER 9780 20.8 14.1 148 18.2 12.3 148
EVENING STAR 9200 23.8 18.0 132 24.7 15.4 160
KIRWIN 9550 8.3 6.7 124 9.6 6.9 139
MARQUETTE 8760 6.0 5.2 115 6.8 5.8 117
SYLVAN LAKE 8420 18.8 15.0 125 21.0 13.3 158
SYLVAN ROAD 8120 12.4 8.6 144 14.4 11.2 129
YOUNTS PEAK 8350 14.9 12.3 121 13.2 11.4 116
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Basin wide percent of average 131 141
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.6 4.8 96 7.0 5.4 130
BIG GOOSE 7990 3.9 -M * 6.7 -M *
BONE SPRINGS DIV 9350 10.9 10.7 102 11.1 9.5 117
BURGESS JUNCTION 7880 5.4 7.7 70 7.4 7.2 103
CLOUD PEAK RESERVOIR 9860 9.6 8.1 119 8.3 8.2 101
DOME LAKE 8880 5.6 9.1 62 7.4 8.8 84
GRAVE SPRINGS 8550 4.7 6.2 76 7.8 6.4 122
HANSEN SAWMILL 8760 3.6 4.6 78 5.8 5.0 116
MIDDLE POWDER 7760 4.9 7.9 62 11.0 7.9 139
POWDER RIVER PASS 9480 8.3 7.1 117 10.4 7.9 132
SUCKER CREEK 8880 6.8 7.6 89 8.8 8.7 101
TIE CREEK 6870 2.3 -M * 5.9 6.9 86
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Basin wide percent of average 87 111
BELLE FOURCHE
BLIND PARK 6890 5.2 7.3 71 12.2 6.2 197
NORTH RAPID CREEK 6130 4.0 -M * 10.6 -M *
WARREN PEAK 6520 6.1 7.3 84 10.8 5.2 208
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Basin wide percent of average 77 202
UPPER N. PLATTE RIVER
COLUMBINE 9400 14.1 16.0 88 15.4 16.5 93
DIVIDE PEAK 8800 13.0 13.4 97 18.2 16.2 112
ELK RIVER 8700 -M 12.7 * 16.5 12.6 131
JOE WRIGHT 10120 14.7 14.1 104 19.3 16.6 116
NORTH FRENCH CREEK 10100 20.2 16.2 125 20.1 15.2 132
OLD BATTLE 10000 18.6 20.7 90 24.4 19.6 124
SOUTH BRUSH CREEK 8400 5.4 7.2 75 14.8 10.8 137
TOWER 10500 28.6 30.3 94 26.8 24.3 110
WEBBER SPRINGS 9200 12.9 17.6 73 18.0 16.7 108
WILLOW CREEK PASS 9540 8.0 7.4 108 9.2 7.9 116
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Basin wide percent of average 95 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.6 16.1 84 15.9 12.2 130
CASPER MTN. 7900 6.9 9.5 73 12.3 8.7 141
DEADMAN HILL 10220 -M 11.2 * 13.2 10.4 127
DEER PARK 9700 10.2 -M * 13.8 -M *
LAPRELE CREEK 8320 2.7 6.7 40 9.9 7.7 129
RENO HILL 8400 8.9 8.4 106 13.3 11.5 116
ROACH 9700 12.6 11.1 114 15.1 14.3 106
SAND LAKE 10080 22.2 21.4 104 20.7 13.1 158
SOUTH PASS 9040 11.1 11.4 97 12.6 10.9 116
WINDY PEAK 7840 3.6 4.6 78 9.2 5.9 156
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Basin wide percent of average 91 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.5 7.4 115 12.5 11.0 114
DIVIDE PEAK 8800 13.0 13.4 97 18.2 16.2 112
OLD BATTLE 10000 18.6 20.7 90 24.4 19.6 124
SANDSTONE RS 8150 8.2 9.4 87 14.8 13.4 110
WHISKEY PARK 8950 17.1 18.6 92 20.7 20.1 103
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Basin wide percent of average 94 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.5 9.7 108 9.8 12.0 82
BLIND BULL SUM 8650 18.0 19.2 94 15.0 17.0 88
EAST RIM DIVIDE 7930 8.5 9.4 90 9.0 11.2 80
ELKHART PARK G.S. 9400 8.6 9.0 96 9.3 11.8 79
GROS VENTRE SUMMIT 8775 9.3 10.7 87 9.5 11.7 81
KENDALL R.S. 7740 9.2 10.0 92 9.8 11.4 86
LOOMIS PARK 8240 -M 11.7 * 12.9 13.9 93
NEW FORK LAKE 8340 7.6 8.0 95 7.8 10.7 73
SNIDER BASIN 8250 8.9 10.0 89 9.4 11.2 84
SPRING CREEK DIVIDE 9000 16.7 18.4 91 17.2 19.6 88
TRIPLE PEAK 8500 16.2 17.6 92 17.8 22.9 78
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Basin wide percent of average 93 83
LOWER GREEN RIVER
HAMS FORK 7840 7.3 8.2 89 7.1 9.9 72
HEWINTA 9500 6.0 6.3 95 9.2 8.5 108
HICKERSON PARK 9150 3.9 3.6 108 6.6 6.0 110
HOLE-IN-ROCK 9150 4.4 3.3 133 7.1 6.0 118
INDIAN CREEK 9425 16.3 18.1 90 13.9 18.5 75
KELLEY R.S. 8180 9.7 10.8 90 11.4 13.8 83
STEEL CREEK PARK 10100 8.8 9.9 89 10.8 8.7 124
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Basin wide percent of average 94 93
UPPER BEAR RIVER
BUG LAKE 7950 11.2 13.0 86 11.4 12.9 88
HAYDEN FORK 9400 8.6 10.3 83 12.0 12.0 100
KELLEY R.S. 8180 9.7 10.8 90 11.4 13.8 83
LILY LAKE 9050 8.3 8.2 101 11.8 9.6 123
MONTE CRISTO 8960 14.9 17.5 85 16.4 16.7 98
SALT RIVER SUMMIT 7600 8.7 9.1 96 11.0 12.4 89
TRIAL LAKE 9960 10.9 16.0 68 12.2 15.4 79
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Basin wide percent of average 85 93
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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.