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: FEBRUARY 10 , 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 18.6 13.5 138 -M 17.5 *
COTTONWOOD CREEK 7600 17.5 15.5 113 20.0 18.9 106
GRANITE CREEK 6770 16.3 13.3 123 18.4 18.5 99
GRASSY LAKE 7265 30.4 27.4 111 30.4 28.4 107
GROS VENTRE SUMMIT 8775 12.5 11.3 111 12.2 12.4 98
LEWIS LAKE DIVIDE 7860 30.0 25.1 120 28.1 28.9 97
PHILLIPS BENCH 8200 24.3 21.1 115 22.9 22.8 100
SALT RIVER SUMMIT 7600 12.2 10.0 122 14.3 13.2 108
SNAKE RIVER STATION 6920 16.2 13.8 117 -M 20.0 *
SPRING CREEK DIVIDE 9000 21.9 19.8 111 20.2 20.9 97
THUMB DIVIDE 7980 -M 12.4 * -M 16.4 *
TOGWOTEE PASS 9580 -M 18.2 * 22.7 21.6 105
TWO OCEAN PLATEAU 9360 28.8 19.7 146 22.7 24.2 94
WILLOW CREEK 8450 24.5 22.8 107 28.2 24.7 114
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Basin wide percent of average 119 102
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 20.8 17.3 120 18.8 13.1 144
BLACK BEAR 7950 38.3 26.9 142 -M 28.8 *
CANYON 7940 14.5 9.1 159 15.2 10.6 143
FISHER CREEK 9100 31.3 26.2 119 -M 26.6 *
MADISON PLATEAU 7750 -M 17.6 * 23.4 18.7 125
NORTHEAST ENTRANCE 7350 9.6 7.0 137 11.4 8.9 128
PARKER PEAK 9400 18.5 15.5 119 -M 11.3 *
SYLVAN LAKE 8420 20.9 16.1 130 22.9 14.2 161
THUMB DIVIDE 7980 -M 12.4 * -M 16.4 *
TWO OCEAN PLATEAU 9360 28.8 19.7 146 22.7 24.2 94
WHISKEY CREEK 6800 16.4 12.2 134 18.9 15.6 121
WHITE MILL 8700 20.6 18.4 112 18.6 20.7 90
WOLVERINE 7650 12.1 8.7 139 10.8 9.5 114
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Basin wide percent of average 131 120
WIND RIVER
BURROUGHS CREEK 8750 14.0 11.4 123 15.2 12.2 125
COLD SPRINGS 9630 8.1 6.2 131 9.7 7.4 131
DEER PARK 9700 13.6 -M * -M -M *
HOBBS PARK 10100 13.9 10.6 131 13.0 9.8 133
LITTLE WARM 9620 11.2 7.8 144 12.3 9.5 129
SOUTH PASS 9040 14.6 12.2 120 15.7 11.8 133
ST. LAWRENCE ALT 8620 6.0 5.2 115 8.7 6.8 128
TOGWOTEE PASS 9580 -M 18.2 * 22.7 21.6 105
TOWNSEND CREEK 8700 7.8 6.8 115 10.3 8.4 123
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Basin wide percent of average 126 123
BIGHORN BASIN
BALD MTN. 9375 14.4 14.9 97 13.6 12.5 109
BEAR TRAP MEADOW 7900 4.5 5.2 87 7.0 5.7 123
BLACKWATER 9780 24.1 15.3 158 20.2 13.2 153
BONE SPRINGS DIV 9350 11.6 11.5 101 11.7 10.1 116
EVENING STAR 9200 27.0 19.5 138 27.1 16.5 164
GRAVE SPRINGS 8550 5.0 6.5 77 7.9 6.7 118
KIRWIN 9550 10.4 7.0 149 11.9 7.4 161
MARQUETTE 8760 6.7 5.6 120 7.4 6.2 119
MIDDLE POWDER 7760 5.2 8.4 62 11.2 8.2 137
OWL CREEK 8975 5.3 3.1 171 5.8 4.2 138
POWDER RIVER PASS 9480 9.1 7.6 120 11.2 8.3 135
SHELL CREEK 9580 12.5 11.0 114 11.1 9.4 118
SYLVAN LAKE 8420 20.9 16.1 130 22.9 14.2 161
SYLVAN ROAD 8120 13.9 9.4 148 15.8 11.9 133
TIMBER CREEK 7950 4.1 4.1 100 5.9 4.5 131
YOUNTS PEAK 8350 17.4 13.0 134 15.4 12.1 127
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Basin wide percent of average 121 136
SHOSHONE RIVER
BLACKWATER 9780 24.1 15.3 158 20.2 13.2 153
EVENING STAR 9200 27.0 19.5 138 27.1 16.5 164
KIRWIN 9550 10.4 7.0 149 11.9 7.4 161
MARQUETTE 8760 6.7 5.6 120 7.4 6.2 119
SYLVAN LAKE 8420 20.9 16.1 130 22.9 14.2 161
SYLVAN ROAD 8120 13.9 9.4 148 15.8 11.9 133
YOUNTS PEAK 8350 17.4 13.0 134 15.4 12.1 127
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Basin wide percent of average 140 148
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.5 5.2 87 7.0 5.7 123
BIG GOOSE 7990 4.2 -M * 7.0 -M *
BONE SPRINGS DIV 9350 11.6 11.5 101 11.7 10.1 116
BURGESS JUNCTION 7880 5.9 8.2 72 7.7 7.6 101
CLOUD PEAK RESERVOIR 9860 10.7 9.0 119 9.4 8.8 107
DOME LAKE 8880 6.0 9.7 62 7.8 9.2 85
GRAVE SPRINGS 8550 5.0 6.5 77 7.9 6.7 118
HANSEN SAWMILL 8760 4.2 5.0 84 6.6 5.3 125
MIDDLE POWDER 7760 5.2 8.4 62 11.2 8.2 137
POWDER RIVER PASS 9480 9.1 7.6 120 11.2 8.3 135
SUCKER CREEK 8880 7.3 8.3 88 9.4 9.2 102
TIE CREEK 6870 2.4 -M * 6.1 7.2 85
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Basin wide percent of average 88 111
BELLE FOURCHE
BLIND PARK 6890 5.4 7.8 69 12.5 6.6 189
NORTH RAPID CREEK 6130 4.1 -M * 10.9 -M *
WARREN PEAK 6520 6.0 7.8 77 10.9 5.5 198
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Basin wide percent of average 73 193
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.2 17.5 87 16.6 17.7 94
DIVIDE PEAK 8800 14.5 14.5 100 20.0 16.9 118
ELK RIVER 8700 -M 14.0 * 17.9 13.5 133
JOE WRIGHT 10120 15.3 15.2 101 20.7 17.7 117
NORTH FRENCH CREEK 10100 21.7 17.4 125 -M 16.3 *
OLD BATTLE 10000 21.1 22.4 94 27.5 21.0 131
SOUTH BRUSH CREEK 8400 5.7 7.8 73 15.2 11.4 133
TOWER 10500 31.7 32.4 98 30.4 26.0 117
WEBBER SPRINGS 9200 14.3 19.1 75 19.8 17.9 111
WILLOW CREEK PASS 9540 8.8 7.9 111 10.0 8.5 118
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Basin wide percent of average 96 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.2 17.2 88 17.0 13.2 129
CASPER MTN. 7900 7.5 10.3 73 12.8 9.3 138
DEADMAN HILL 10220 13.9 11.9 117 14.0 11.2 125
DEER PARK 9700 13.6 -M * -M -M *
LAPRELE CREEK 8320 1.7 7.2 24 10.6 8.1 131
RENO HILL 8400 9.2 9.1 101 13.6 12.4 110
ROACH 9700 13.3 12.0 111 15.6 15.2 103
SAND LAKE 10080 24.5 23.1 106 21.9 14.1 155
SOUTH PASS 9040 14.6 12.2 120 15.7 11.8 133
WINDY PEAK 7840 4.0 5.0 80 9.8 6.3 156
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Basin wide percent of average 96 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.2 8.1 126 13.8 11.4 121
DIVIDE PEAK 8800 14.5 14.5 100 20.0 16.9 118
OLD BATTLE 10000 21.1 22.4 94 27.5 21.0 131
SANDSTONE RS 8150 9.6 10.3 93 16.3 14.0 116
WHISKEY PARK 8950 18.8 20.1 94 22.4 20.8 108
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Basin wide percent of average 98 119
UPPER GREEN RIVER
BIG SANDY OPENING 9100 13.1 10.3 127 12.0 12.7 94
BLIND BULL SUM 8650 22.5 20.8 108 18.2 18.2 100
EAST RIM DIVIDE 7930 11.1 10.1 110 11.4 11.9 96
ELKHART PARK G.S. 9400 11.3 9.9 114 11.7 12.5 94
GROS VENTRE SUMMIT 8775 12.5 11.3 111 12.2 12.4 98
KENDALL R.S. 7740 12.7 10.7 119 12.9 12.1 107
LOOMIS PARK 8240 -M 12.8 * 16.4 14.8 111
NEW FORK LAKE 8340 10.3 8.5 121 10.4 11.3 92
SNIDER BASIN 8250 12.6 10.8 117 12.8 11.9 108
SPRING CREEK DIVIDE 9000 21.9 19.8 111 20.2 20.9 97
TRIPLE PEAK 8500 20.2 18.9 107 20.8 24.4 85
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Basin wide percent of average 113 97
LOWER GREEN RIVER
HAMS FORK 7840 9.9 8.9 111 8.6 10.5 82
HEWINTA 9500 6.9 6.9 100 9.6 9.0 107
HICKERSON PARK 9150 4.5 4.0 112 7.2 6.4 112
HOLE-IN-ROCK 9150 4.7 3.7 127 7.4 6.4 116
INDIAN CREEK 9425 21.9 19.6 112 18.4 19.7 93
KELLEY R.S. 8180 13.0 11.9 109 14.6 14.7 99
STEEL CREEK PARK 10100 9.9 10.5 94 11.6 9.1 127
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Basin wide percent of average 108 102
UPPER BEAR RIVER
BUG LAKE 7950 15.4 14.1 109 14.8 13.8 107
HAYDEN FORK 9400 10.3 11.4 90 13.7 13.0 105
KELLEY R.S. 8180 13.0 11.9 109 14.6 14.7 99
LILY LAKE 9050 9.4 9.0 104 13.0 10.2 127
MONTE CRISTO 8960 19.0 19.0 100 19.8 17.9 111
SALT RIVER SUMMIT 7600 12.2 10.0 122 14.3 13.2 108
TRIAL LAKE 9960 14.7 17.3 85 15.6 16.6 94
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Basin wide percent of average 101 106
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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.