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: FEBRUARY 8 , 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 13.3 132 17.5 17.3 101
COTTONWOOD CREEK 7600 16.3 15.2 107 19.4 18.6 104
GRANITE CREEK 6770 14.9 13.1 114 17.0 18.2 93
GRASSY LAKE 7265 29.6 26.4 112 29.8 27.9 107
GROS VENTRE SUMMIT 8775 11.4 11.2 102 11.2 12.2 92
LEWIS LAKE DIVIDE 7860 28.7 24.6 117 27.8 28.4 98
PHILLIPS BENCH 8200 22.6 20.7 109 21.7 22.5 96
SALT RIVER SUMMIT 7600 11.3 9.8 115 13.5 13.0 104
SNAKE RIVER STATION 6920 15.8 13.5 117 19.3 19.7 98
SPRING CREEK DIVIDE 9000 20.5 19.5 105 19.8 20.6 96
THUMB DIVIDE 7980 17.2 12.2 141 16.8 16.2 104
TOGWOTEE PASS 9580 -M 17.9 * 21.7 21.3 102
TWO OCEAN PLATEAU 9360 27.4 19.4 141 22.5 23.8 95
WILLOW CREEK 8450 23.0 22.4 103 26.6 24.3 109
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Basin wide percent of average 116 100
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 20.3 17.0 119 17.8 12.9 138
BLACK BEAR 7950 36.5 26.4 138 -M 28.3 *
CANYON 7940 13.5 8.9 152 14.3 10.5 136
FISHER CREEK 9100 30.1 25.8 117 24.2 26.1 93
MADISON PLATEAU 7750 -M 17.3 * 22.8 18.4 124
NORTHEAST ENTRANCE 7350 9.3 6.9 135 11.1 8.8 126
PARKER PEAK 9400 18.0 15.3 118 -M 11.2 *
SYLVAN LAKE 8420 20.1 15.9 126 22.1 14.0 158
THUMB DIVIDE 7980 17.2 12.2 141 16.8 16.2 104
TWO OCEAN PLATEAU 9360 27.4 19.4 141 22.5 23.8 95
WHISKEY CREEK 6800 15.5 12.0 129 18.0 15.3 118
WHITE MILL 8700 19.8 18.1 109 17.9 20.4 88
WOLVERINE 7650 11.5 8.5 135 10.4 9.4 111
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Basin wide percent of average 128 113
WIND RIVER
BURROUGHS CREEK 8750 13.6 11.2 121 14.7 12.0 123
COLD SPRINGS 9630 7.4 6.1 121 9.0 7.3 123
DEER PARK 9700 11.8 -M * -M -M *
HOBBS PARK 10100 12.8 10.5 122 12.0 9.7 124
LITTLE WARM 9620 -M 7.7 * 11.6 9.4 123
SOUTH PASS 9040 13.2 12.0 110 14.5 11.6 125
ST. LAWRENCE ALT 8620 5.5 5.2 106 8.1 6.7 121
TOGWOTEE PASS 9580 -M 17.9 * 21.7 21.3 102
TOWNSEND CREEK 8700 6.9 6.7 103 9.4 8.3 113
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Basin wide percent of average 115 117
BIGHORN BASIN
BALD MTN. 9375 14.2 14.7 97 13.4 12.3 109
BEAR TRAP MEADOW 7900 4.5 5.1 88 7.0 5.6 125
BLACKWATER 9780 23.3 15.0 155 19.6 13.0 151
BONE SPRINGS DIV 9350 11.4 11.3 101 11.6 10.0 116
EVENING STAR 9200 26.1 19.1 137 26.5 16.2 164
GRAVE SPRINGS 8550 5.0 6.5 77 7.9 6.7 118
KIRWIN 9550 9.7 7.0 139 -M 7.2 *
MARQUETTE 8760 6.4 5.5 116 7.1 6.1 116
MIDDLE POWDER 7760 5.1 8.2 62 11.1 8.2 135
OWL CREEK 8975 4.7 3.0 157 5.3 4.1 129
POWDER RIVER PASS 9480 9.1 7.5 121 11.0 8.2 134
SHELL CREEK 9580 12.4 10.9 114 11.0 9.3 118
SYLVAN LAKE 8420 20.1 15.9 126 22.1 14.0 158
SYLVAN ROAD 8120 13.4 9.2 146 15.3 11.7 131
TIMBER CREEK 7950 3.9 4.0 98 5.6 4.4 127
YOUNTS PEAK 8350 16.9 12.9 131 14.8 12.0 123
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Basin wide percent of average 120 133
SHOSHONE RIVER
BLACKWATER 9780 23.3 15.0 155 19.6 13.0 151
EVENING STAR 9200 26.1 19.1 137 26.5 16.2 164
KIRWIN 9550 9.7 7.0 139 -M 7.2 *
MARQUETTE 8760 6.4 5.5 116 7.1 6.1 116
SYLVAN LAKE 8420 20.1 15.9 126 22.1 14.0 158
SYLVAN ROAD 8120 13.4 9.2 146 15.3 11.7 131
YOUNTS PEAK 8350 16.9 12.9 131 14.8 12.0 123
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Basin wide percent of average 137 144
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.5 5.1 88 7.0 5.6 125
BIG GOOSE 7990 4.1 -M * 6.9 -M *
BONE SPRINGS DIV 9350 11.4 11.3 101 11.6 10.0 116
BURGESS JUNCTION 7880 5.7 8.1 70 7.6 7.5 101
CLOUD PEAK RESERVOIR 9860 10.4 8.8 118 9.0 8.7 103
DOME LAKE 8880 6.1 9.6 64 7.8 9.1 86
GRAVE SPRINGS 8550 5.0 6.5 77 7.9 6.7 118
HANSEN SAWMILL 8760 4.2 4.9 86 6.2 5.3 117
MIDDLE POWDER 7760 5.1 8.2 62 11.1 8.2 135
POWDER RIVER PASS 9480 9.1 7.5 121 11.0 8.2 134
SUCKER CREEK 8880 7.1 8.1 88 9.0 9.1 99
TIE CREEK 6870 2.4 -M * 6.0 7.2 83
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Basin wide percent of average 88 110
BELLE FOURCHE
BLIND PARK 6890 5.4 7.7 70 12.5 6.5 192
NORTH RAPID CREEK 6130 4.1 -M * 10.8 -M *
WARREN PEAK 6520 6.0 7.7 78 10.9 5.5 198
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Basin wide percent of average 74 195
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.1 17.1 88 16.6 17.4 95
DIVIDE PEAK 8800 14.1 14.2 99 19.7 16.8 117
ELK RIVER 8700 -M 13.7 * 18.0 13.3 135
JOE WRIGHT 10120 15.3 14.9 103 20.7 17.4 119
NORTH FRENCH CREEK 10100 20.9 17.1 122 20.3 16.1 126
OLD BATTLE 10000 20.3 22.0 92 26.8 20.7 129
SOUTH BRUSH CREEK 8400 5.5 7.7 71 15.1 11.2 135
TOWER 10500 31.5 31.9 99 27.2 25.6 106
WEBBER SPRINGS 9200 13.8 18.7 74 19.3 17.6 110
WILLOW CREEK PASS 9540 8.7 7.8 112 10.0 8.3 120
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Basin wide percent of average 96 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.7 17.0 86 16.6 13.0 128
CASPER MTN. 7900 7.3 10.1 72 12.7 9.2 138
DEADMAN HILL 10220 13.7 11.8 116 13.9 11.0 126
DEER PARK 9700 11.8 -M * -M -M *
LAPRELE CREEK 8320 2.1 7.1 30 10.4 8.0 130
RENO HILL 8400 9.1 8.9 102 13.6 12.2 111
ROACH 9700 13.2 11.8 112 15.5 15.0 103
SAND LAKE 10080 23.9 22.7 105 21.4 13.9 154
SOUTH PASS 9040 13.2 12.0 110 14.5 11.6 125
WINDY PEAK 7840 3.9 4.9 80 9.7 6.2 156
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Basin wide percent of average 95 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.1 7.9 128 13.7 11.3 121
DIVIDE PEAK 8800 14.1 14.2 99 19.7 16.8 117
OLD BATTLE 10000 20.3 22.0 92 26.8 20.7 129
SANDSTONE RS 8150 9.5 10.1 94 16.1 13.8 117
WHISKEY PARK 8950 18.6 19.7 94 22.4 20.6 109
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Basin wide percent of average 98 119
UPPER GREEN RIVER
BIG SANDY OPENING 9100 12.2 10.2 120 11.4 12.6 90
BLIND BULL SUM 8650 21.6 20.4 106 17.4 17.9 97
EAST RIM DIVIDE 7930 10.3 10.0 103 10.7 11.7 91
ELKHART PARK G.S. 9400 10.5 9.7 108 11.0 12.4 89
GROS VENTRE SUMMIT 8775 11.4 11.2 102 11.2 12.2 92
KENDALL R.S. 7740 11.9 10.6 112 12.2 12.0 102
LOOMIS PARK 8240 -M 12.5 * 15.6 14.6 107
NEW FORK LAKE 8340 9.7 8.4 115 9.8 11.2 88
SNIDER BASIN 8250 11.6 10.6 109 11.8 11.7 101
SPRING CREEK DIVIDE 9000 20.5 19.5 105 19.8 20.6 96
TRIPLE PEAK 8500 18.8 18.6 101 20.2 24.0 84
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Basin wide percent of average 107 94
LOWER GREEN RIVER
HAMS FORK 7840 9.4 8.8 107 8.1 10.3 79
HEWINTA 9500 6.3 6.8 93 9.3 8.9 104
HICKERSON PARK 9150 4.0 3.9 103 6.8 6.3 108
HOLE-IN-ROCK 9150 4.5 3.6 125 7.3 6.3 116
INDIAN CREEK 9425 20.6 19.2 107 17.2 19.4 89
KELLEY R.S. 8180 12.3 11.7 105 14.0 14.5 97
STEEL CREEK PARK 10100 9.1 10.4 88 11.2 9.0 124
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Basin wide percent of average 103 99
UPPER BEAR RIVER
BUG LAKE 7950 13.7 13.9 99 13.3 13.6 98
HAYDEN FORK 9400 9.0 11.1 81 12.9 12.7 102
KELLEY R.S. 8180 12.3 11.7 105 14.0 14.5 97
LILY LAKE 9050 8.7 8.8 99 12.2 10.1 121
MONTE CRISTO 8960 16.8 18.6 90 17.9 17.6 102
SALT RIVER SUMMIT 7600 11.3 9.8 115 13.5 13.0 104
TRIAL LAKE 9960 12.7 17.0 75 13.8 16.3 85
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Basin wide percent of average 93 100
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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.