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 9 , 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 17.6 13.4 131 -M 17.4 *
COTTONWOOD CREEK 7600 16.8 15.4 109 19.7 18.7 105
GRANITE CREEK 6770 15.1 13.2 114 17.2 18.3 94
GRASSY LAKE 7265 29.8 26.9 111 29.8 28.1 106
GROS VENTRE SUMMIT 8775 11.5 11.2 103 11.4 12.3 93
LEWIS LAKE DIVIDE 7860 28.9 24.9 116 27.8 28.6 97
PHILLIPS BENCH 8200 22.7 20.9 109 21.8 22.7 96
SALT RIVER SUMMIT 7600 11.7 9.9 118 13.7 13.1 105
SNAKE RIVER STATION 6920 15.9 13.6 117 19.3 19.8 97
SPRING CREEK DIVIDE 9000 20.9 19.6 107 20.0 20.7 97
THUMB DIVIDE 7980 17.4 12.3 141 16.9 16.3 104
TOGWOTEE PASS 9580 -M 18.0 * 22.0 21.4 103
TWO OCEAN PLATEAU 9360 27.4 19.5 141 22.5 24.0 94
WILLOW CREEK 8450 23.5 22.6 104 27.8 24.5 113
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Basin wide percent of average 116 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 20.4 17.1 119 17.8 13.0 137
BLACK BEAR 7950 36.8 26.7 138 -M 28.6 *
CANYON 7940 13.7 9.0 152 14.4 10.5 137
FISHER CREEK 9100 30.4 26.0 117 24.2 26.3 92
MADISON PLATEAU 7750 -M 17.5 * 22.9 18.6 123
NORTHEAST ENTRANCE 7350 9.3 6.9 135 11.1 8.8 126
PARKER PEAK 9400 18.2 15.4 118 -M 11.2 *
SYLVAN LAKE 8420 20.3 16.0 127 22.3 14.1 158
THUMB DIVIDE 7980 17.4 12.3 141 16.9 16.3 104
TWO OCEAN PLATEAU 9360 27.4 19.5 141 22.5 24.0 94
WHISKEY CREEK 6800 15.6 12.1 129 18.1 15.4 118
WHITE MILL 8700 19.9 18.2 109 17.9 20.6 87
WOLVERINE 7650 11.9 8.6 138 10.6 9.4 113
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Basin wide percent of average 128 112
WIND RIVER
BURROUGHS CREEK 8750 13.7 11.3 121 14.8 12.1 122
COLD SPRINGS 9630 7.4 6.1 121 9.1 7.3 125
DEER PARK 9700 12.0 -M * 16.4 -M *
HOBBS PARK 10100 12.9 10.6 122 12.2 9.8 124
LITTLE WARM 9620 10.6 7.8 136 11.8 9.4 126
SOUTH PASS 9040 13.4 12.1 111 14.7 11.7 126
ST. LAWRENCE ALT 8620 5.5 5.2 106 8.3 6.8 122
TOGWOTEE PASS 9580 -M 18.0 * 22.0 21.4 103
TOWNSEND CREEK 8700 6.9 6.7 103 9.5 8.4 113
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Basin wide percent of average 118 118
BIGHORN BASIN
BALD MTN. 9375 14.3 14.8 97 13.3 12.4 107
BEAR TRAP MEADOW 7900 4.6 5.1 90 7.1 5.7 125
BLACKWATER 9780 23.3 15.1 154 19.6 13.1 150
BONE SPRINGS DIV 9350 11.3 11.4 99 11.4 10.1 113
EVENING STAR 9200 26.4 19.3 137 26.7 16.4 163
GRAVE SPRINGS 8550 4.9 6.5 75 7.9 6.7 118
KIRWIN 9550 9.7 7.0 139 11.4 7.3 156
MARQUETTE 8760 6.2 5.6 111 7.0 6.2 113
MIDDLE POWDER 7760 5.0 8.3 60 11.1 8.2 135
OWL CREEK 8975 4.7 3.0 157 5.3 4.1 129
POWDER RIVER PASS 9480 9.0 7.5 120 11.1 8.3 134
SHELL CREEK 9580 12.4 10.9 114 11.0 9.4 117
SYLVAN LAKE 8420 20.3 16.0 127 22.3 14.1 158
SYLVAN ROAD 8120 13.5 9.3 145 15.4 11.8 131
TIMBER CREEK 7950 3.9 4.0 98 5.7 4.5 127
YOUNTS PEAK 8350 17.1 12.9 133 14.9 12.0 124
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Basin wide percent of average 119 134
SHOSHONE RIVER
BLACKWATER 9780 23.3 15.1 154 19.6 13.1 150
EVENING STAR 9200 26.4 19.3 137 26.7 16.4 163
KIRWIN 9550 9.7 7.0 139 11.4 7.3 156
MARQUETTE 8760 6.2 5.6 111 7.0 6.2 113
SYLVAN LAKE 8420 20.3 16.0 127 22.3 14.1 158
SYLVAN ROAD 8120 13.5 9.3 145 15.4 11.8 131
YOUNTS PEAK 8350 17.1 12.9 133 14.9 12.0 124
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Basin wide percent of average 137 145
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.6 5.1 90 7.1 5.7 125
BIG GOOSE 7990 4.1 -M * 6.9 -M *
BONE SPRINGS DIV 9350 11.3 11.4 99 11.4 10.1 113
BURGESS JUNCTION 7880 5.7 8.2 70 7.6 7.5 101
CLOUD PEAK RESERVOIR 9860 10.4 8.9 117 8.9 8.7 102
DOME LAKE 8880 6.0 9.6 63 7.8 9.2 85
GRAVE SPRINGS 8550 4.9 6.5 75 7.9 6.7 118
HANSEN SAWMILL 8760 4.0 4.9 82 6.6 5.3 125
MIDDLE POWDER 7760 5.0 8.3 60 11.1 8.2 135
POWDER RIVER PASS 9480 9.0 7.5 120 11.1 8.3 134
SUCKER CREEK 8880 7.0 8.2 85 9.0 9.1 99
TIE CREEK 6870 2.3 -M * 6.0 7.2 83
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Basin wide percent of average 86 110
BELLE FOURCHE
BLIND PARK 6890 5.4 7.8 69 12.4 6.5 191
NORTH RAPID CREEK 6130 4.1 -M * 10.8 -M *
WARREN PEAK 6520 6.0 7.8 77 10.9 5.5 198
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Basin wide percent of average 73 194
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.1 17.3 87 16.6 17.6 94
DIVIDE PEAK 8800 14.5 14.3 101 20.0 16.8 119
ELK RIVER 8700 -M 13.8 * 18.2 13.4 136
JOE WRIGHT 10120 15.3 15.0 102 20.7 17.6 118
NORTH FRENCH CREEK 10100 21.5 17.3 124 20.3 16.2 125
OLD BATTLE 10000 20.7 22.2 93 27.2 20.9 130
SOUTH BRUSH CREEK 8400 5.6 7.7 73 15.1 11.3 134
TOWER 10500 31.6 32.2 98 30.3 25.8 117
WEBBER SPRINGS 9200 14.0 18.9 74 19.5 17.8 110
WILLOW CREEK PASS 9540 8.8 7.9 111 10.0 8.4 119
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Basin wide percent of average 96 119
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.1 17.1 88 16.9 13.1 129
CASPER MTN. 7900 7.3 10.2 72 12.7 9.2 138
DEADMAN HILL 10220 13.9 11.8 118 14.0 11.1 126
DEER PARK 9700 12.0 -M * 16.4 -M *
LAPRELE CREEK 8320 1.9 7.1 27 10.5 8.0 131
RENO HILL 8400 9.1 9.0 101 13.4 12.3 109
ROACH 9700 13.2 11.9 111 15.6 15.1 103
SAND LAKE 10080 24.5 22.9 107 21.8 14.0 156
SOUTH PASS 9040 13.4 12.1 111 14.7 11.7 126
WINDY PEAK 7840 4.0 5.0 80 9.7 6.2 156
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Basin wide percent of average 96 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.4 8.0 130 13.8 11.4 121
DIVIDE PEAK 8800 14.5 14.3 101 20.0 16.8 119
OLD BATTLE 10000 20.7 22.2 93 27.2 20.9 130
SANDSTONE RS 8150 9.6 10.2 94 16.2 13.9 117
WHISKEY PARK 8950 18.8 19.9 94 22.4 20.7 108
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Basin wide percent of average 99 119
UPPER GREEN RIVER
BIG SANDY OPENING 9100 12.4 10.2 122 11.6 12.6 92
BLIND BULL SUM 8650 21.8 20.6 106 17.6 18.0 98
EAST RIM DIVIDE 7930 10.5 10.0 105 10.8 11.8 92
ELKHART PARK G.S. 9400 10.6 9.8 108 11.1 12.4 90
GROS VENTRE SUMMIT 8775 11.5 11.2 103 11.4 12.3 93
KENDALL R.S. 7740 12.1 10.6 114 12.4 12.0 103
LOOMIS PARK 8240 -M 12.6 * 15.8 14.7 107
NEW FORK LAKE 8340 9.8 8.5 115 9.7 11.3 86
SNIDER BASIN 8250 11.9 10.7 111 12.2 11.8 103
SPRING CREEK DIVIDE 9000 20.9 19.6 107 20.0 20.7 97
TRIPLE PEAK 8500 19.3 18.7 103 20.5 24.2 85
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Basin wide percent of average 108 95
LOWER GREEN RIVER
HAMS FORK 7840 9.6 8.8 109 8.4 10.4 81
HEWINTA 9500 6.6 6.8 97 9.4 8.9 106
HICKERSON PARK 9150 4.0 4.0 100 6.8 6.3 108
HOLE-IN-ROCK 9150 4.5 3.6 125 7.2 6.3 114
INDIAN CREEK 9425 21.1 19.4 109 17.8 19.5 91
KELLEY R.S. 8180 12.6 11.8 107 14.2 14.6 97
STEEL CREEK PARK 10100 9.3 10.4 89 11.4 9.1 125
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Basin wide percent of average 104 100
UPPER BEAR RIVER
BUG LAKE 7950 14.8 14.0 106 14.3 13.7 104
HAYDEN FORK 9400 9.6 11.2 86 13.2 12.8 103
KELLEY R.S. 8180 12.6 11.8 107 14.2 14.6 97
LILY LAKE 9050 9.1 8.9 102 12.6 10.1 125
MONTE CRISTO 8960 18.2 18.8 97 19.3 17.7 109
SALT RIVER SUMMIT 7600 11.7 9.9 118 13.7 13.1 105
TRIAL LAKE 9960 13.9 17.2 81 14.9 16.5 90
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Basin wide percent of average 98 104
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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.