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 FRIDAY: FEBRUARY 12 , 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 18.4 13.8 133 -M 17.8 *
COTTONWOOD CREEK 7600 17.8 15.9 112 20.0 19.3 104
GRANITE CREEK 6770 16.3 13.6 120 18.3 18.7 98
GRASSY LAKE 7265 30.6 28.3 108 30.5 28.8 106
GROS VENTRE SUMMIT 8775 12.3 11.5 107 12.2 12.6 97
LEWIS LAKE DIVIDE 7860 30.0 25.6 117 27.7 29.3 95
PHILLIPS BENCH 8200 24.3 21.4 114 23.0 23.2 99
SALT RIVER SUMMIT 7600 12.2 10.3 118 14.2 13.4 106
SNAKE RIVER STATION 6920 16.5 14.1 117 -M 20.3 *
SPRING CREEK DIVIDE 9000 21.8 20.2 108 20.2 21.2 95
THUMB DIVIDE 7980 18.3 12.6 145 17.5 16.7 105
TOGWOTEE PASS 9580 -M 18.5 * 22.9 21.9 105
TWO OCEAN PLATEAU 9360 28.6 19.9 144 22.6 24.5 92
WILLOW CREEK 8450 24.6 23.2 106 28.3 25.1 113
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Basin wide percent of average 118 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 20.6 17.6 117 18.5 13.3 139
BLACK BEAR 7950 38.8 27.5 141 -M 29.3 *
CANYON 7940 14.4 9.2 157 15.1 10.8 140
FISHER CREEK 9100 31.7 26.6 119 -M 27.0 *
MADISON PLATEAU 7750 -M 18.0 * 23.5 19.1 123
NORTHEAST ENTRANCE 7350 9.5 7.1 134 11.3 9.0 126
PARKER PEAK 9400 18.4 15.8 116 -M 11.5 *
SYLVAN LAKE 8420 20.8 16.4 127 23.0 14.4 160
THUMB DIVIDE 7980 18.3 12.6 145 17.5 16.7 105
TWO OCEAN PLATEAU 9360 28.6 19.9 144 22.6 24.5 92
WHISKEY CREEK 6800 16.7 12.5 134 19.1 15.8 121
WHITE MILL 8700 20.9 18.8 111 18.8 21.1 89
WOLVERINE 7650 11.8 8.8 134 10.8 9.7 111
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Basin wide percent of average 130 117
WIND RIVER
BURROUGHS CREEK 8750 13.9 11.6 120 15.2 12.4 123
COLD SPRINGS 9630 7.9 6.3 125 9.8 7.5 131
DEER PARK 9700 14.3 -M * 18.6 -M *
HOBBS PARK 10100 14.2 10.8 131 13.4 10.0 134
LITTLE WARM 9620 11.0 8.0 138 12.2 9.6 127
SOUTH PASS 9040 15.2 12.4 123 16.3 12.0 136
ST. LAWRENCE ALT 8620 6.2 5.4 115 9.2 7.0 131
TOGWOTEE PASS 9580 -M 18.5 * 22.9 21.9 105
TOWNSEND CREEK 8700 8.2 6.9 119 10.9 8.6 127
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Basin wide percent of average 125 123
BIGHORN BASIN
BALD MTN. 9375 14.8 15.1 98 13.3 12.6 106
BEAR TRAP MEADOW 7900 5.4 5.3 102 7.6 5.8 131
BLACKWATER 9780 23.8 15.6 153 20.1 13.4 150
BONE SPRINGS DIV 9350 11.7 11.7 100 11.7 10.3 114
EVENING STAR 9200 27.0 19.8 136 26.9 16.8 160
GRAVE SPRINGS 8550 5.3 6.7 79 8.5 6.8 125
KIRWIN 9550 10.2 7.2 142 11.8 7.5 157
MARQUETTE 8760 6.5 5.7 114 7.2 6.3 114
MIDDLE POWDER 7760 6.1 8.5 72 11.7 8.3 141
OWL CREEK 8975 5.1 3.1 165 5.6 4.2 133
POWDER RIVER PASS 9480 9.5 7.7 123 11.5 8.4 137
SHELL CREEK 9580 12.9 11.2 115 12.6 9.6 131
SYLVAN LAKE 8420 20.8 16.4 127 23.0 14.4 160
SYLVAN ROAD 8120 -M 9.6 * -M 12.1 *
TIMBER CREEK 7950 4.4 4.2 105 6.2 4.6 135
YOUNTS PEAK 8350 17.3 13.2 131 15.1 12.3 123
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Basin wide percent of average 119 136
SHOSHONE RIVER
BLACKWATER 9780 23.8 15.6 153 20.1 13.4 150
EVENING STAR 9200 27.0 19.8 136 26.9 16.8 160
KIRWIN 9550 10.2 7.2 142 11.8 7.5 157
MARQUETTE 8760 6.5 5.7 114 7.2 6.3 114
SYLVAN LAKE 8420 20.8 16.4 127 23.0 14.4 160
SYLVAN ROAD 8120 -M 9.6 * -M 12.1 *
YOUNTS PEAK 8350 17.3 13.2 131 15.1 12.3 123
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Basin wide percent of average 136 147
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.4 5.3 102 7.6 5.8 131
BIG GOOSE 7990 4.6 -M * 7.5 -M *
BONE SPRINGS DIV 9350 11.7 11.7 100 11.7 10.3 114
BURGESS JUNCTION 7880 6.0 8.4 71 8.0 7.7 104
CLOUD PEAK RESERVOIR 9860 11.1 9.3 119 9.6 9.0 107
DOME LAKE 8880 6.3 9.9 64 8.6 9.4 91
GRAVE SPRINGS 8550 5.3 6.7 79 8.5 6.8 125
HANSEN SAWMILL 8760 4.1 5.1 80 6.8 5.4 126
MIDDLE POWDER 7760 6.1 8.5 72 11.7 8.3 141
POWDER RIVER PASS 9480 9.5 7.7 123 11.5 8.4 137
SUCKER CREEK 8880 7.5 8.4 89 9.7 9.3 104
TIE CREEK 6870 2.5 -M * 6.2 7.3 85
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Basin wide percent of average 90 114
BELLE FOURCHE
BLIND PARK 6890 5.4 8.0 68 12.4 6.7 185
NORTH RAPID CREEK 6130 4.2 -M * 10.7 -M *
WARREN PEAK 6520 6.4 8.0 80 10.9 5.6 195
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Basin wide percent of average 74 189
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.3 17.8 86 16.0 18.0 89
DIVIDE PEAK 8800 15.2 14.7 103 20.2 17.1 118
ELK RIVER 8700 -M 14.3 * 17.6 13.7 128
JOE WRIGHT 10120 15.5 15.4 101 20.9 18.0 116
NORTH FRENCH CREEK 10100 22.1 17.7 125 23.2 16.6 140
OLD BATTLE 10000 21.4 22.8 94 27.4 21.4 128
SOUTH BRUSH CREEK 8400 5.4 8.0 68 15.8 11.6 136
TOWER 10500 32.7 33.0 99 30.9 26.4 117
WEBBER SPRINGS 9200 14.5 19.4 75 20.1 18.2 110
WILLOW CREEK PASS 9540 9.2 8.1 114 9.1 8.6 106
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Basin wide percent of average 96 119
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.2 17.5 87 17.0 13.4 127
CASPER MTN. 7900 7.9 10.5 75 13.0 9.5 137
DEADMAN HILL 10220 -M 12.1 * 13.5 11.4 118
DEER PARK 9700 14.3 -M * 18.6 -M *
LAPRELE CREEK 8320 1.2 7.3 16 10.5 8.2 128
RENO HILL 8400 9.7 9.2 105 13.9 12.7 109
ROACH 9700 13.4 12.2 110 15.8 15.4 103
SAND LAKE 10080 24.6 23.5 105 22.1 14.4 153
SOUTH PASS 9040 15.2 12.4 123 16.3 12.0 136
WINDY PEAK 7840 3.8 5.1 75 9.8 6.4 153
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Basin wide percent of average 93 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.8 8.2 132 14.6 11.6 126
DIVIDE PEAK 8800 15.2 14.7 103 20.2 17.1 118
OLD BATTLE 10000 21.4 22.8 94 27.4 21.4 128
SANDSTONE RS 8150 9.8 10.5 93 16.8 14.1 119
WHISKEY PARK 8950 19.4 20.4 95 22.4 21.0 107
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Basin wide percent of average 100 119
UPPER GREEN RIVER
BIG SANDY OPENING 9100 12.9 10.5 123 12.1 12.9 94
BLIND BULL SUM 8650 22.5 21.2 106 18.1 18.5 98
EAST RIM DIVIDE 7930 11.0 10.3 107 11.3 12.1 93
ELKHART PARK G.S. 9400 11.1 10.1 110 11.7 12.7 92
GROS VENTRE SUMMIT 8775 12.3 11.5 107 12.2 12.6 97
KENDALL R.S. 7740 12.6 10.9 116 12.6 12.3 102
LOOMIS PARK 8240 -M 13.0 * 16.2 15.0 108
NEW FORK LAKE 8340 10.2 8.7 117 10.0 11.5 87
SNIDER BASIN 8250 12.5 11.0 114 12.6 12.1 104
SPRING CREEK DIVIDE 9000 21.8 20.2 108 20.2 21.2 95
TRIPLE PEAK 8500 20.1 19.2 105 20.7 24.7 84
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Basin wide percent of average 110 95
LOWER GREEN RIVER
HAMS FORK 7840 10.0 9.1 110 8.7 10.6 82
HEWINTA 9500 7.4 7.1 104 10.5 9.1 115
HICKERSON PARK 9150 5.1 4.1 124 7.6 6.5 117
HOLE-IN-ROCK 9150 5.0 3.8 132 7.9 6.5 122
INDIAN CREEK 9425 22.1 20.0 111 18.4 20.0 92
KELLEY R.S. 8180 13.0 12.2 107 14.6 14.9 98
STEEL CREEK PARK 10100 10.4 10.7 97 12.2 9.3 131
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Basin wide percent of average 109 104
UPPER BEAR RIVER
BUG LAKE 7950 15.4 14.4 107 14.5 14.0 104
HAYDEN FORK 9400 10.7 11.6 92 14.4 13.2 109
KELLEY R.S. 8180 13.0 12.2 107 14.6 14.9 98
LILY LAKE 9050 9.9 9.2 108 13.7 10.4 132
MONTE CRISTO 8960 19.3 19.3 100 20.1 18.2 110
SALT RIVER SUMMIT 7600 12.2 10.3 118 14.2 13.4 106
TRIAL LAKE 9960 15.2 17.7 86 16.2 17.0 95
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Basin wide percent of average 101 107
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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.