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 16 , 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 18.9 14.2 133 -M 18.3 *
COTTONWOOD CREEK 7600 18.1 16.6 109 20.9 20.0 104
GRANITE CREEK 6770 16.6 14.0 119 18.5 19.3 96
GRASSY LAKE 7265 32.0 29.8 107 31.8 29.7 107
GROS VENTRE SUMMIT 8775 12.5 11.8 106 12.4 13.0 95
LEWIS LAKE DIVIDE 7860 31.0 26.6 117 28.5 30.2 94
PHILLIPS BENCH 8200 24.8 22.2 112 23.4 23.9 98
SALT RIVER SUMMIT 7600 12.5 10.7 117 14.6 13.8 106
SNAKE RIVER STATION 6920 17.1 14.6 117 20.4 20.9 98
SPRING CREEK DIVIDE 9000 22.1 20.9 106 22.1 21.9 101
THUMB DIVIDE 7980 18.8 13.0 145 18.0 17.2 105
TOGWOTEE PASS 9580 -M 19.0 * 23.2 22.6 103
TWO OCEAN PLATEAU 9360 29.3 20.5 143 23.3 25.3 92
WILLOW CREEK 8450 25.4 23.9 106 29.3 25.9 113
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Basin wide percent of average 117 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 21.1 18.1 117 18.9 13.7 138
BLACK BEAR 7950 40.1 28.5 141 -M 30.4 *
CANYON 7940 14.9 9.6 155 15.6 11.1 141
FISHER CREEK 9100 32.1 27.5 117 -M 27.9 *
MADISON PLATEAU 7750 -M 18.7 * 24.0 19.7 122
NORTHEAST ENTRANCE 7350 9.8 7.4 132 11.5 9.3 124
PARKER PEAK 9400 18.9 16.3 116 -M 11.9 *
SYLVAN LAKE 8420 21.6 16.9 128 23.6 14.9 158
THUMB DIVIDE 7980 18.8 13.0 145 18.0 17.2 105
TWO OCEAN PLATEAU 9360 29.3 20.5 143 23.3 25.3 92
WHISKEY CREEK 6800 16.8 12.9 130 19.2 16.3 118
WHITE MILL 8700 21.2 19.4 109 19.0 21.7 88
WOLVERINE 7650 12.0 9.2 130 11.0 10.0 110
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Basin wide percent of average 129 116
WIND RIVER
BURROUGHS CREEK 8750 14.0 12.0 117 15.3 12.7 120
COLD SPRINGS 9630 8.0 6.4 125 9.9 7.7 129
DEER PARK 9700 14.4 -M * 18.8 -M *
HOBBS PARK 10100 14.3 11.1 129 13.4 10.3 130
LITTLE WARM 9620 11.2 8.3 135 12.3 9.9 124
SOUTH PASS 9040 15.2 12.8 119 16.4 12.4 132
ST. LAWRENCE ALT 8620 6.3 5.6 113 9.2 7.2 128
TOGWOTEE PASS 9580 -M 19.0 * 23.2 22.6 103
TOWNSEND CREEK 8700 8.3 7.2 115 10.9 8.9 122
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Basin wide percent of average 122 121
BIGHORN BASIN
BALD MTN. 9375 15.2 15.6 97 14.1 13.0 108
BEAR TRAP MEADOW 7900 5.5 5.4 102 7.8 5.9 132
BLACKWATER 9780 24.3 16.1 151 20.6 13.8 149
BONE SPRINGS DIV 9350 12.4 12.1 102 12.4 10.6 117
EVENING STAR 9200 27.5 20.6 133 27.6 17.3 160
GRAVE SPRINGS 8550 5.6 6.9 81 8.6 6.9 125
KIRWIN 9550 10.4 7.4 141 12.1 7.8 155
MARQUETTE 8760 6.5 5.9 110 7.3 6.5 112
MIDDLE POWDER 7760 6.3 8.8 72 12.0 8.6 140
OWL CREEK 8975 5.3 3.2 166 5.8 4.4 132
POWDER RIVER PASS 9480 9.8 8.0 123 11.8 8.7 136
SHELL CREEK 9580 13.4 11.6 116 12.6 9.8 129
SYLVAN LAKE 8420 21.6 16.9 128 23.6 14.9 158
SYLVAN ROAD 8120 14.2 10.0 142 16.3 12.4 131
TIMBER CREEK 7950 4.5 4.3 105 6.3 4.7 134
YOUNTS PEAK 8350 17.5 13.6 129 15.4 12.7 121
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Basin wide percent of average 120 136
SHOSHONE RIVER
BLACKWATER 9780 24.3 16.1 151 20.6 13.8 149
EVENING STAR 9200 27.5 20.6 133 27.6 17.3 160
KIRWIN 9550 10.4 7.4 141 12.1 7.8 155
MARQUETTE 8760 6.5 5.9 110 7.3 6.5 112
SYLVAN LAKE 8420 21.6 16.9 128 23.6 14.9 158
SYLVAN ROAD 8120 14.2 10.0 142 16.3 12.4 131
YOUNTS PEAK 8350 17.5 13.6 129 15.4 12.7 121
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Basin wide percent of average 135 144
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.5 5.4 102 7.8 5.9 132
BIG GOOSE 7990 4.6 -M * 7.6 -M *
BONE SPRINGS DIV 9350 12.4 12.1 102 12.4 10.6 117
BURGESS JUNCTION 7880 6.3 8.7 72 8.1 7.9 103
CLOUD PEAK RESERVOIR 9860 11.2 9.7 115 9.4 9.3 101
DOME LAKE 8880 6.4 10.2 63 8.6 9.6 90
GRAVE SPRINGS 8550 5.6 6.9 81 8.6 6.9 125
HANSEN SAWMILL 8760 4.3 5.2 83 6.8 5.5 124
MIDDLE POWDER 7760 6.3 8.8 72 12.0 8.6 140
POWDER RIVER PASS 9480 9.8 8.0 123 11.8 8.7 136
SUCKER CREEK 8880 7.8 8.8 89 9.9 9.6 103
TIE CREEK 6870 2.5 -M * 6.3 7.5 84
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Basin wide percent of average 90 113
BELLE FOURCHE
BLIND PARK 6890 5.6 8.3 67 12.6 6.9 183
NORTH RAPID CREEK 6130 4.3 -M * 10.9 -M *
WARREN PEAK 6520 6.5 8.3 78 11.0 5.7 193
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Basin wide percent of average 73 187
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.4 18.6 83 16.4 18.6 88
DIVIDE PEAK 8800 15.3 15.2 101 20.7 17.5 118
ELK RIVER 8700 -M 14.9 * 18.0 14.1 128
JOE WRIGHT 10120 15.7 15.9 99 21.2 18.5 115
NORTH FRENCH CREEK 10100 22.4 18.4 122 23.3 17.1 136
OLD BATTLE 10000 21.5 23.6 91 27.7 22.1 125
SOUTH BRUSH CREEK 8400 5.2 8.3 63 16.2 11.9 136
TOWER 10500 32.9 34.0 97 30.9 27.3 113
WEBBER SPRINGS 9200 14.4 20.2 71 20.2 18.8 107
WILLOW CREEK PASS 9540 9.5 8.4 113 9.8 8.9 110
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Basin wide percent of average 94 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.6 18.0 87 17.1 13.9 123
CASPER MTN. 7900 8.3 10.9 76 13.3 9.8 136
DEADMAN HILL 10220 -M 12.5 * 14.2 11.7 121
DEER PARK 9700 14.4 -M * 18.8 -M *
LAPRELE CREEK 8320 .4 7.6 5 10.8 8.4 129
RENO HILL 8400 9.7 9.6 101 14.2 13.1 108
ROACH 9700 13.6 12.6 108 16.0 15.9 101
SAND LAKE 10080 25.1 24.3 103 22.2 14.9 149
SOUTH PASS 9040 15.2 12.8 119 16.4 12.4 132
WINDY PEAK 7840 4.0 5.4 74 10.1 6.5 155
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Basin wide percent of average 91 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.9 8.6 127 14.8 11.8 125
DIVIDE PEAK 8800 15.3 15.2 101 20.7 17.5 118
OLD BATTLE 10000 21.5 23.6 91 27.7 22.1 125
SANDSTONE RS 8150 10.1 10.9 93 16.8 14.4 117
WHISKEY PARK 8950 19.6 21.2 92 22.9 21.3 108
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Basin wide percent of average 97 118
UPPER GREEN RIVER
BIG SANDY OPENING 9100 13.1 10.8 121 12.3 13.3 92
BLIND BULL SUM 8650 23.0 22.0 105 18.3 19.1 96
EAST RIM DIVIDE 7930 11.1 10.7 104 11.5 12.4 93
ELKHART PARK G.S. 9400 11.2 10.5 107 11.8 13.1 90
GROS VENTRE SUMMIT 8775 12.5 11.8 106 12.4 13.0 95
KENDALL R.S. 7740 12.8 11.3 113 12.7 12.7 100
LOOMIS PARK 8240 -M 13.5 * 16.4 15.4 106
NEW FORK LAKE 8340 10.3 9.0 114 10.3 11.8 87
SNIDER BASIN 8250 12.8 11.4 112 12.8 12.4 103
SPRING CREEK DIVIDE 9000 22.1 20.9 106 22.1 21.9 101
TRIPLE PEAK 8500 20.6 19.8 104 22.0 25.5 86
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Basin wide percent of average 108 95
LOWER GREEN RIVER
HAMS FORK 7840 10.0 9.5 105 8.8 10.9 81
HEWINTA 9500 7.7 7.4 104 10.6 9.4 113
HICKERSON PARK 9150 5.1 4.4 116 7.6 6.6 115
HOLE-IN-ROCK 9150 5.0 3.9 128 8.0 6.6 121
INDIAN CREEK 9425 22.5 20.8 108 18.8 20.6 91
KELLEY R.S. 8180 13.1 12.7 103 14.7 15.4 95
STEEL CREEK PARK 10100 10.3 11.0 94 12.3 9.5 129
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Basin wide percent of average 106 102
UPPER BEAR RIVER
BUG LAKE 7950 15.7 15.0 105 14.8 14.5 102
HAYDEN FORK 9400 10.9 12.1 90 14.6 13.7 107
KELLEY R.S. 8180 13.1 12.7 103 14.7 15.4 95
LILY LAKE 9050 9.9 9.6 103 13.7 10.7 128
MONTE CRISTO 8960 19.5 20.2 97 20.2 18.8 107
SALT RIVER SUMMIT 7600 12.5 10.7 117 14.6 13.8 106
TRIAL LAKE 9960 15.2 18.4 83 16.3 17.6 93
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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.