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 MONDAY: JANUARY 25 , 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 15.4 11.5 134 16.2 15.1 107
COTTONWOOD CREEK 7600 13.7 13.0 105 16.8 16.1 104
GRANITE CREEK 6770 12.3 11.3 109 14.3 16.0 89
GRASSY LAKE 7265 26.3 21.1 125 26.4 24.5 108
GROS VENTRE SUMMIT 8775 9.1 9.8 93 9.4 10.8 87
LEWIS LAKE DIVIDE 7860 25.0 20.9 120 25.7 25.0 103
PHILLIPS BENCH 8200 19.1 17.7 108 19.2 19.7 97
SALT RIVER SUMMIT 7600 8.6 8.2 105 10.8 11.4 95
SNAKE RIVER STATION 6920 14.5 11.4 127 17.6 17.3 102
SPRING CREEK DIVIDE 9000 16.5 16.8 98 16.9 18.0 94
THUMB DIVIDE 7980 14.6 10.5 139 14.5 14.2 102
TOGWOTEE PASS 9580 -M 15.7 * 19.3 18.7 103
TWO OCEAN PLATEAU 9360 23.6 17.1 138 20.5 20.9 98
WILLOW CREEK 8450 19.1 19.3 99 24.2 21.2 114
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Basin wide percent of average 115 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 18.4 15.1 122 16.5 11.3 146
BLACK BEAR 7950 30.5 22.6 135 -M 24.4 *
CANYON 7940 11.8 7.7 153 12.7 9.2 138
FISHER CREEK 9100 26.9 22.4 120 23.2 22.7 102
MADISON PLATEAU 7750 -M 14.8 * 18.1 16.0 113
NORTHEAST ENTRANCE 7350 8.4 5.9 142 10.2 7.7 132
PARKER PEAK 9400 16.0 13.5 119 -M 9.8 *
SYLVAN LAKE 8420 18.1 14.0 129 20.5 12.4 165
THUMB DIVIDE 7980 14.6 10.5 139 14.5 14.2 102
TWO OCEAN PLATEAU 9360 23.6 17.1 138 20.5 20.9 98
WHISKEY CREEK 6800 13.1 10.3 127 15.4 13.3 116
WHITE MILL 8700 17.9 15.7 114 16.3 17.8 92
WOLVERINE 7650 11.5 7.3 158 9.7 8.3 117
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Basin wide percent of average 130 115
WIND RIVER
BURROUGHS CREEK 8750 11.6 9.7 120 12.7 10.6 120
COLD SPRINGS 9630 6.3 5.5 115 7.9 6.6 120
DEER PARK 9700 9.9 -M * 13.5 -M *
HOBBS PARK 10100 10.3 9.5 108 10.3 8.7 118
LITTLE WARM 9620 8.4 6.7 125 9.5 8.4 113
SOUTH PASS 9040 11.0 10.7 103 12.4 10.2 122
ST. LAWRENCE ALT 8620 4.4 4.5 98 7.2 6.0 120
TOGWOTEE PASS 9580 -M 15.7 * 19.3 18.7 103
TOWNSEND CREEK 8700 5.4 5.8 93 7.9 7.3 108
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Basin wide percent of average 110 114
BIGHORN BASIN
BALD MTN. 9375 13.8 13.1 105 12.7 11.0 115
BEAR TRAP MEADOW 7900 4.6 4.6 100 7.1 5.2 137
BLACKWATER 9780 20.3 13.1 155 17.9 11.4 157
BONE SPRINGS DIV 9350 -M 10.0 * 10.2 8.8 116
EVENING STAR 9200 23.4 16.8 139 24.3 14.3 170
GRAVE SPRINGS 8550 4.6 5.8 79 7.7 6.1 126
KIRWIN 9550 8.0 6.3 127 9.2 6.4 144
MARQUETTE 8760 -M 4.9 * 6.4 5.6 114
MIDDLE POWDER 7760 4.7 7.4 64 10.8 7.4 146
OWL CREEK 8975 -M 2.6 * 4.3 3.6 119
POWDER RIVER PASS 9480 8.2 6.6 124 10.3 7.3 141
SHELL CREEK 9580 11.9 9.7 123 10.9 8.3 131
SYLVAN LAKE 8420 18.1 14.0 129 20.5 12.4 165
SYLVAN ROAD 8120 12.3 7.9 156 14.2 10.4 137
TIMBER CREEK 7950 3.6 3.4 106 5.6 4.0 140
YOUNTS PEAK 8350 14.7 11.5 128 12.7 10.6 120
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Basin wide percent of average 123 139
SHOSHONE RIVER
BLACKWATER 9780 20.3 13.1 155 17.9 11.4 157
EVENING STAR 9200 23.4 16.8 139 24.3 14.3 170
KIRWIN 9550 8.0 6.3 127 9.2 6.4 144
MARQUETTE 8760 -M 4.9 * 6.4 5.6 114
SYLVAN LAKE 8420 18.1 14.0 129 20.5 12.4 165
SYLVAN ROAD 8120 12.3 7.9 156 14.2 10.4 137
YOUNTS PEAK 8350 14.7 11.5 128 12.7 10.6 120
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Basin wide percent of average 139 148
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.6 4.6 100 7.1 5.2 137
BIG GOOSE 7990 3.6 -M * 6.6 -M *
BONE SPRINGS DIV 9350 -M 10.0 * 10.2 8.8 116
BURGESS JUNCTION 7880 5.1 7.1 72 7.2 6.8 106
CLOUD PEAK RESERVOIR 9860 9.2 7.5 123 7.0 7.6 92
DOME LAKE 8880 5.4 8.4 64 7.3 8.3 88
GRAVE SPRINGS 8550 4.6 5.8 79 7.7 6.1 126
HANSEN SAWMILL 8760 3.3 4.3 77 5.8 4.8 121
MIDDLE POWDER 7760 4.7 7.4 64 10.8 7.4 146
POWDER RIVER PASS 9480 8.2 6.6 124 10.3 7.3 141
SUCKER CREEK 8880 6.6 7.0 94 8.5 8.1 105
TIE CREEK 6870 2.2 -M * 5.9 6.5 91
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Basin wide percent of average 88 114
BELLE FOURCHE
BLIND PARK 6890 5.0 6.8 74 12.0 5.8 207
NORTH RAPID CREEK 6130 3.9 -M * 10.4 -M *
WARREN PEAK 6520 5.9 6.8 87 10.8 4.9 220
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Basin wide percent of average 80 213
UPPER N. PLATTE RIVER
COLUMBINE 9400 13.4 14.6 92 15.0 15.1 99
DIVIDE PEAK 8800 12.0 12.5 96 17.6 15.2 116
ELK RIVER 8700 -M 11.6 * 15.5 11.7 132
JOE WRIGHT 10120 14.0 13.2 106 19.1 15.4 124
NORTH FRENCH CREEK 10100 19.3 15.0 129 19.9 14.2 140
OLD BATTLE 10000 17.4 19.2 91 23.4 18.2 129
SOUTH BRUSH CREEK 8400 6.1 6.6 92 14.4 10.5 137
TOWER 10500 26.7 27.8 96 26.0 22.4 116
WEBBER SPRINGS 9200 12.4 16.3 76 17.2 15.8 109
WILLOW CREEK PASS 9540 7.4 7.0 106 9.0 7.4 122
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Basin wide percent of average 97 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.2 15.2 87 15.6 11.3 138
CASPER MTN. 7900 5.5 8.9 62 11.1 8.3 134
DEADMAN HILL 10220 12.7 10.4 122 13.2 9.6 138
DEER PARK 9700 9.9 -M * 13.5 -M *
LAPRELE CREEK 8320 2.3 6.2 37 9.1 7.0 130
RENO HILL 8400 7.6 7.9 96 11.8 11.0 107
ROACH 9700 11.8 10.3 115 14.6 13.3 110
SAND LAKE 10080 21.2 19.9 107 20.2 12.2 166
SOUTH PASS 9040 11.0 10.7 103 12.4 10.2 122
WINDY PEAK 7840 3.0 4.2 71 8.6 5.5 156
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Basin wide percent of average 94 132
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.0 6.8 103 11.7 10.1 116
DIVIDE PEAK 8800 12.0 12.5 96 17.6 15.2 116
OLD BATTLE 10000 17.4 19.2 91 23.4 18.2 129
SANDSTONE RS 8150 7.5 8.6 87 14.0 12.3 114
WHISKEY PARK 8950 16.2 17.2 94 20.1 18.1 111
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Basin wide percent of average 93 117
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.3 8.9 116 9.6 11.1 86
BLIND BULL SUM 8650 17.7 17.7 100 14.7 15.5 95
EAST RIM DIVIDE 7930 8.3 8.5 98 8.8 10.3 85
ELKHART PARK G.S. 9400 8.4 8.3 101 9.1 10.9 83
GROS VENTRE SUMMIT 8775 9.1 9.8 93 9.4 10.8 87
KENDALL R.S. 7740 9.1 9.2 99 9.6 10.5 91
LOOMIS PARK 8240 9.9 10.7 93 12.7 12.8 99
NEW FORK LAKE 8340 7.4 7.2 103 7.5 9.9 76
SNIDER BASIN 8250 8.8 9.1 97 9.3 10.3 90
SPRING CREEK DIVIDE 9000 16.5 16.8 98 16.9 18.0 94
TRIPLE PEAK 8500 15.9 16.0 99 17.7 21.1 84
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Basin wide percent of average 99 89
LOWER GREEN RIVER
HAMS FORK 7840 7.1 7.4 96 6.9 9.1 76
HEWINTA 9500 5.8 5.7 102 8.5 7.9 108
HICKERSON PARK 9150 3.6 3.3 109 6.2 5.7 109
HOLE-IN-ROCK 9150 4.1 3.0 137 6.8 5.7 119
INDIAN CREEK 9425 15.7 16.6 95 13.5 17.0 79
KELLEY R.S. 8180 9.5 9.8 97 11.1 12.7 87
STEEL CREEK PARK 10100 8.4 9.3 90 10.4 8.2 127
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Basin wide percent of average 98 96
UPPER BEAR RIVER
BUG LAKE 7950 9.7 12.1 80 11.1 12.1 92
HAYDEN FORK 9400 8.3 9.6 86 11.6 11.2 104
KELLEY R.S. 8180 9.5 9.8 97 11.1 12.7 87
LILY LAKE 9050 7.9 7.7 103 11.0 9.0 122
MONTE CRISTO 8960 14.1 16.1 88 15.8 15.6 101
SALT RIVER SUMMIT 7600 8.6 8.2 105 10.8 11.4 95
TRIAL LAKE 9960 10.4 14.9 70 11.4 14.3 80
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Basin wide percent of average 87 96
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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.