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 SATURDAY: FEBRUARY 13 , 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 18.5 13.9 133 -M 17.9 *
COTTONWOOD CREEK 7600 17.9 16.1 111 20.1 19.4 104
GRANITE CREEK 6770 16.4 13.7 120 18.3 18.9 97
GRASSY LAKE 7265 30.7 28.8 107 30.5 29.0 105
GROS VENTRE SUMMIT 8775 12.4 11.5 108 12.2 12.7 96
LEWIS LAKE DIVIDE 7860 30.1 25.9 116 28.0 29.5 95
PHILLIPS BENCH 8200 24.3 21.6 112 23.0 23.4 98
SALT RIVER SUMMIT 7600 12.3 10.4 118 14.3 13.5 106
SNAKE RIVER STATION 6920 -M 14.2 * -M 20.4 *
SPRING CREEK DIVIDE 9000 22.0 20.3 108 22.0 21.4 103
THUMB DIVIDE 7980 -M 12.7 * -M 16.8 *
TOGWOTEE PASS 9580 -M 18.6 * 23.0 22.1 104
TWO OCEAN PLATEAU 9360 28.7 20.1 143 22.9 24.7 93
WILLOW CREEK 8450 24.8 23.4 106 28.4 25.3 112
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Basin wide percent of average 116 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 20.9 17.7 118 18.9 13.4 141
BLACK BEAR 7950 38.9 27.8 140 -M 29.6 *
CANYON 7940 14.6 9.3 157 15.1 10.8 140
FISHER CREEK 9100 31.7 26.9 118 -M 27.2 *
MADISON PLATEAU 7750 -M 18.2 * 23.6 19.2 123
NORTHEAST ENTRANCE 7350 9.6 7.2 133 11.3 9.1 124
PARKER PEAK 9400 18.6 15.9 117 -M 11.6 *
SYLVAN LAKE 8420 21.0 16.5 127 23.0 14.5 159
THUMB DIVIDE 7980 -M 12.7 * -M 16.8 *
TWO OCEAN PLATEAU 9360 28.7 20.1 143 22.9 24.7 93
WHISKEY CREEK 6800 16.7 12.6 133 19.1 15.9 120
WHITE MILL 8700 20.9 18.9 111 18.8 21.2 89
WOLVERINE 7650 11.9 8.9 134 10.9 9.7 112
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Basin wide percent of average 128 118
WIND RIVER
BURROUGHS CREEK 8750 14.0 11.7 120 15.2 12.5 122
COLD SPRINGS 9630 8.0 6.3 127 9.9 7.5 132
DEER PARK 9700 14.3 -M * 18.6 -M *
HOBBS PARK 10100 14.3 10.9 131 13.4 10.1 133
LITTLE WARM 9620 11.1 8.1 137 12.4 9.7 128
SOUTH PASS 9040 15.2 12.5 122 16.4 12.1 136
ST. LAWRENCE ALT 8620 6.3 5.4 117 9.1 7.0 130
TOGWOTEE PASS 9580 -M 18.6 * 23.0 22.1 104
TOWNSEND CREEK 8700 8.4 7.0 120 11.1 8.7 128
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Basin wide percent of average 125 123
BIGHORN BASIN
BALD MTN. 9375 14.9 15.3 97 14.0 12.7 110
BEAR TRAP MEADOW 7900 5.2 5.3 98 7.6 5.8 131
BLACKWATER 9780 24.3 15.7 155 20.5 13.5 152
BONE SPRINGS DIV 9350 12.1 11.8 103 12.4 10.4 119
EVENING STAR 9200 27.2 20.0 136 27.5 16.9 163
GRAVE SPRINGS 8550 5.6 6.7 84 8.5 6.8 125
KIRWIN 9550 10.5 7.2 146 12.0 7.6 158
MARQUETTE 8760 6.8 5.8 117 7.7 6.4 120
MIDDLE POWDER 7760 6.3 8.6 73 11.8 8.4 140
OWL CREEK 8975 5.4 3.1 174 6.0 4.3 140
POWDER RIVER PASS 9480 9.7 7.8 124 11.7 8.5 138
SHELL CREEK 9580 13.1 11.3 116 12.6 9.6 131
SYLVAN LAKE 8420 21.0 16.5 127 23.0 14.5 159
SYLVAN ROAD 8120 13.9 9.7 143 16.0 12.2 131
TIMBER CREEK 7950 4.5 4.2 107 6.2 4.6 135
YOUNTS PEAK 8350 17.4 13.3 131 15.2 12.4 123
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Basin wide percent of average 122 138
SHOSHONE RIVER
BLACKWATER 9780 24.3 15.7 155 20.5 13.5 152
EVENING STAR 9200 27.2 20.0 136 27.5 16.9 163
KIRWIN 9550 10.5 7.2 146 12.0 7.6 158
MARQUETTE 8760 6.8 5.8 117 7.7 6.4 120
SYLVAN LAKE 8420 21.0 16.5 127 23.0 14.5 159
SYLVAN ROAD 8120 13.9 9.7 143 16.0 12.2 131
YOUNTS PEAK 8350 17.4 13.3 131 15.2 12.4 123
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Basin wide percent of average 137 146
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.2 5.3 98 7.6 5.8 131
BIG GOOSE 7990 4.7 -M * 7.7 -M *
BONE SPRINGS DIV 9350 12.1 11.8 103 12.4 10.4 119
BURGESS JUNCTION 7880 6.3 8.5 74 8.2 7.7 106
CLOUD PEAK RESERVOIR 9860 11.3 9.4 120 9.9 9.0 110
DOME LAKE 8880 6.5 9.9 66 8.6 9.4 91
GRAVE SPRINGS 8550 5.6 6.7 84 8.5 6.8 125
HANSEN SAWMILL 8760 4.5 5.1 88 6.8 5.4 126
MIDDLE POWDER 7760 6.3 8.6 73 11.8 8.4 140
POWDER RIVER PASS 9480 9.7 7.8 124 11.7 8.5 138
SUCKER CREEK 8880 7.8 8.5 92 10.1 9.4 107
TIE CREEK 6870 2.6 -M * 6.3 7.4 85
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Basin wide percent of average 92 116
BELLE FOURCHE
BLIND PARK 6890 5.5 8.1 68 12.5 6.7 187
NORTH RAPID CREEK 6130 4.2 -M * 10.9 -M *
WARREN PEAK 6520 6.4 8.1 79 11.0 5.6 196
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Basin wide percent of average 73 191
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.4 18.0 86 16.5 18.2 91
DIVIDE PEAK 8800 15.3 14.8 103 20.4 17.2 119
ELK RIVER 8700 -M 14.5 * 18.1 13.8 131
JOE WRIGHT 10120 15.7 15.5 101 21.3 18.1 118
NORTH FRENCH CREEK 10100 22.2 17.9 124 23.2 16.7 139
OLD BATTLE 10000 21.4 23.0 93 27.6 21.6 128
SOUTH BRUSH CREEK 8400 5.4 8.0 68 16.0 11.6 138
TOWER 10500 32.7 33.3 98 31.0 26.6 117
WEBBER SPRINGS 9200 14.6 19.6 74 20.2 18.4 110
WILLOW CREEK PASS 9540 9.4 8.2 115 9.9 8.7 114
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Basin wide percent of average 96 119
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.4 17.6 88 17.1 13.6 126
CASPER MTN. 7900 8.2 10.6 77 13.2 9.5 139
DEADMAN HILL 10220 -M 12.2 * 13.8 11.5 120
DEER PARK 9700 14.3 -M * 18.6 -M *
LAPRELE CREEK 8320 .9 7.4 12 10.7 8.2 130
RENO HILL 8400 9.7 9.3 104 14.1 12.8 110
ROACH 9700 13.5 12.3 110 15.9 15.5 103
SAND LAKE 10080 24.8 23.7 105 22.2 14.5 153
SOUTH PASS 9040 15.2 12.5 122 16.4 12.1 136
WINDY PEAK 7840 4.0 5.2 77 10.0 6.4 156
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Basin wide percent of average 93 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.7 8.3 129 14.8 11.6 128
DIVIDE PEAK 8800 15.3 14.8 103 20.4 17.2 119
OLD BATTLE 10000 21.4 23.0 93 27.6 21.6 128
SANDSTONE RS 8150 9.9 10.6 93 16.9 14.2 119
WHISKEY PARK 8950 19.4 20.6 94 22.7 21.1 108
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Basin wide percent of average 99 119
UPPER GREEN RIVER
BIG SANDY OPENING 9100 13.1 10.5 125 12.3 13.0 95
BLIND BULL SUM 8650 22.6 21.4 106 18.2 18.6 98
EAST RIM DIVIDE 7930 11.0 10.4 106 11.3 12.2 93
ELKHART PARK G.S. 9400 11.2 10.2 110 11.8 12.8 92
GROS VENTRE SUMMIT 8775 12.4 11.5 108 12.2 12.7 96
KENDALL R.S. 7740 12.6 11.0 115 12.7 12.4 102
LOOMIS PARK 8240 -M 13.1 * 16.3 15.1 108
NEW FORK LAKE 8340 10.2 8.8 116 10.2 11.6 88
SNIDER BASIN 8250 12.6 11.1 114 12.7 12.2 104
SPRING CREEK DIVIDE 9000 22.0 20.3 108 22.0 21.4 103
TRIPLE PEAK 8500 20.2 19.4 104 20.8 24.9 84
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Basin wide percent of average 110 96
LOWER GREEN RIVER
HAMS FORK 7840 10.0 9.2 109 8.8 10.7 82
HEWINTA 9500 7.6 7.1 107 10.5 9.2 114
HICKERSON PARK 9150 5.2 4.2 124 7.7 6.5 118
HOLE-IN-ROCK 9150 5.1 3.8 134 8.1 6.5 125
INDIAN CREEK 9425 22.3 20.2 110 18.7 20.1 93
KELLEY R.S. 8180 13.1 12.3 107 14.7 15.0 98
STEEL CREEK PARK 10100 10.3 10.7 96 12.4 9.3 133
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Basin wide percent of average 109 105
UPPER BEAR RIVER
BUG LAKE 7950 15.6 14.5 108 14.8 14.1 105
HAYDEN FORK 9400 10.8 11.7 92 14.8 13.3 111
KELLEY R.S. 8180 13.1 12.3 107 14.7 15.0 98
LILY LAKE 9050 9.9 9.3 106 13.7 10.4 132
MONTE CRISTO 8960 19.4 19.5 99 20.2 18.3 110
SALT RIVER SUMMIT 7600 12.3 10.4 118 14.3 13.5 106
TRIAL LAKE 9960 15.2 17.9 85 16.2 17.1 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.