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 6 , 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 16.3 13.1 124 16.7 17.0 98
COTTONWOOD CREEK 7600 15.3 14.9 103 18.5 18.2 102
GRANITE CREEK 6770 13.3 12.9 103 15.4 17.9 86
GRASSY LAKE 7265 28.7 25.4 113 28.8 27.5 105
GROS VENTRE SUMMIT 8775 9.7 11.0 88 9.9 12.1 82
LEWIS LAKE DIVIDE 7860 26.9 24.1 112 27.0 28.0 96
PHILLIPS BENCH 8200 21.1 20.3 104 20.7 22.2 93
SALT RIVER SUMMIT 7600 9.7 9.6 101 12.0 12.8 94
SNAKE RIVER STATION 6920 15.1 13.2 114 18.6 19.4 96
SPRING CREEK DIVIDE 9000 18.2 19.1 95 18.6 20.2 92
THUMB DIVIDE 7980 -M 11.9 * -M 15.9 *
TOGWOTEE PASS 9580 -M 17.6 * 20.5 20.9 98
TWO OCEAN PLATEAU 9360 25.1 19.1 131 21.5 23.4 92
WILLOW CREEK 8450 21.2 22.0 96 25.4 23.8 107
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Basin wide percent of average 108 96
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.3 16.7 116 17.2 12.6 137
BLACK BEAR 7950 33.1 25.9 128 -M 27.8 *
CANYON 7940 12.6 8.7 145 13.4 10.3 130
FISHER CREEK 9100 28.5 25.3 113 23.9 25.7 93
MADISON PLATEAU 7750 -M 17.0 * 20.7 18.1 114
NORTHEAST ENTRANCE 7350 8.9 6.7 133 10.8 8.6 126
PARKER PEAK 9400 17.0 15.0 113 -M 11.0 *
SYLVAN LAKE 8420 19.2 15.6 123 21.3 13.8 154
THUMB DIVIDE 7980 -M 11.9 * -M 15.9 *
TWO OCEAN PLATEAU 9360 25.1 19.1 131 21.5 23.4 92
WHISKEY CREEK 6800 14.0 11.8 119 16.7 15.0 111
WHITE MILL 8700 19.0 17.7 107 17.1 20.1 85
WOLVERINE 7650 11.0 8.3 133 10.1 9.2 110
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Basin wide percent of average 122 110
WIND RIVER
BURROUGHS CREEK 8750 12.3 10.9 113 13.4 11.8 114
COLD SPRINGS 9630 6.7 6.0 112 8.4 7.2 117
DEER PARK 9700 10.2 -M * 14.5 -M *
HOBBS PARK 10100 11.2 10.4 108 10.7 9.6 111
LITTLE WARM 9620 9.2 7.6 121 10.3 9.2 112
SOUTH PASS 9040 11.8 11.8 100 13.2 11.3 117
ST. LAWRENCE ALT 8620 4.8 5.1 94 7.5 6.6 114
TOGWOTEE PASS 9580 -M 17.6 * 20.5 20.9 98
TOWNSEND CREEK 8700 5.7 6.5 88 8.3 8.2 101
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Basin wide percent of average 106 109
BIGHORN BASIN
BALD MTN. 9375 14.2 14.4 99 13.3 12.1 110
BEAR TRAP MEADOW 7900 4.6 5.0 92 7.0 5.6 125
BLACKWATER 9780 21.5 14.7 146 18.6 12.7 146
BONE SPRINGS DIV 9350 11.2 11.1 101 11.3 9.8 115
EVENING STAR 9200 24.9 18.7 133 25.4 16.0 159
GRAVE SPRINGS 8550 4.9 6.4 77 7.9 6.6 120
KIRWIN 9550 8.3 6.9 120 9.8 7.1 138
MARQUETTE 8760 6.1 5.4 113 6.8 6.0 113
MIDDLE POWDER 7760 5.0 8.1 62 11.0 8.1 136
OWL CREEK 8975 4.1 2.9 141 4.8 4.0 120
POWDER RIVER PASS 9480 8.6 7.3 118 10.7 8.1 132
SHELL CREEK 9580 12.3 10.7 115 11.0 9.2 120
SYLVAN LAKE 8420 19.2 15.6 123 21.3 13.8 154
SYLVAN ROAD 8120 12.6 9.0 140 14.6 11.5 127
TIMBER CREEK 7950 3.7 3.9 95 5.6 4.4 127
YOUNTS PEAK 8350 15.4 12.7 121 13.5 11.8 114
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Basin wide percent of average 116 131
SHOSHONE RIVER
BLACKWATER 9780 21.5 14.7 146 18.6 12.7 146
EVENING STAR 9200 24.9 18.7 133 25.4 16.0 159
KIRWIN 9550 8.3 6.9 120 9.8 7.1 138
MARQUETTE 8760 6.1 5.4 113 6.8 6.0 113
SYLVAN LAKE 8420 19.2 15.6 123 21.3 13.8 154
SYLVAN ROAD 8120 12.6 9.0 140 14.6 11.5 127
YOUNTS PEAK 8350 15.4 12.7 121 13.5 11.8 114
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Basin wide percent of average 130 139
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.6 5.0 92 7.0 5.6 125
BIG GOOSE 7990 4.0 -M * 6.8 -M *
BONE SPRINGS DIV 9350 11.2 11.1 101 11.3 9.8 115
BURGESS JUNCTION 7880 5.5 8.0 69 7.5 7.4 101
CLOUD PEAK RESERVOIR 9860 9.9 8.6 115 8.3 8.5 98
DOME LAKE 8880 5.8 9.4 62 7.7 9.0 86
GRAVE SPRINGS 8550 4.9 6.4 77 7.9 6.6 120
HANSEN SAWMILL 8760 3.7 4.8 77 6.0 5.2 115
MIDDLE POWDER 7760 5.0 8.1 62 11.0 8.1 136
POWDER RIVER PASS 9480 8.6 7.3 118 10.7 8.1 132
SUCKER CREEK 8880 6.9 7.9 87 8.9 8.9 100
TIE CREEK 6870 2.3 -M * 6.0 7.0 86
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Basin wide percent of average 86 110
BELLE FOURCHE
BLIND PARK 6890 5.4 7.6 71 12.4 6.4 194
NORTH RAPID CREEK 6130 4.1 -M * 10.7 -M *
WARREN PEAK 6520 5.9 7.6 78 10.9 5.4 202
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Basin wide percent of average 74 197
UPPER N. PLATTE RIVER
COLUMBINE 9400 14.7 16.7 88 16.2 17.1 95
DIVIDE PEAK 8800 14.1 13.9 101 19.6 16.6 118
ELK RIVER 8700 -M 13.3 * 17.6 13.0 135
JOE WRIGHT 10120 15.0 14.6 103 20.4 17.2 119
NORTH FRENCH CREEK 10100 20.8 16.8 124 20.3 15.8 128
OLD BATTLE 10000 20.1 21.5 93 26.4 20.3 130
SOUTH BRUSH CREEK 8400 5.2 7.5 69 15.0 11.1 135
TOWER 10500 30.7 31.4 98 27.1 25.2 108
WEBBER SPRINGS 9200 13.6 18.3 74 18.9 17.3 109
WILLOW CREEK PASS 9540 8.5 7.7 110 9.6 8.2 117
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Basin wide percent of average 96 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.5 16.7 87 16.5 12.7 130
CASPER MTN. 7900 7.2 9.9 73 12.6 9.0 140
DEADMAN HILL 10220 13.4 11.6 116 13.8 10.8 128
DEER PARK 9700 10.2 -M * 14.5 -M *
LAPRELE CREEK 8320 2.4 6.9 35 10.3 7.9 130
RENO HILL 8400 9.1 8.7 105 13.4 12.0 112
ROACH 9700 13.0 11.5 113 15.4 14.8 104
SAND LAKE 10080 23.6 22.2 106 21.3 13.6 157
SOUTH PASS 9040 11.8 11.8 100 13.2 11.3 117
WINDY PEAK 7840 3.8 4.8 79 9.6 6.1 157
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Basin wide percent of average 95 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.3 7.7 134 13.3 11.2 119
DIVIDE PEAK 8800 14.1 13.9 101 19.6 16.6 118
OLD BATTLE 10000 20.1 21.5 93 26.4 20.3 130
SANDSTONE RS 8150 9.5 9.8 97 15.9 13.7 116
WHISKEY PARK 8950 18.4 19.3 95 21.9 20.4 107
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Basin wide percent of average 100 118
UPPER GREEN RIVER
BIG SANDY OPENING 9100 11.6 10.0 116 10.8 12.4 87
BLIND BULL SUM 8650 19.2 20.0 96 15.7 17.6 89
EAST RIM DIVIDE 7930 9.3 9.8 95 9.7 11.5 84
ELKHART PARK G.S. 9400 9.6 9.4 102 10.1 12.2 83
GROS VENTRE SUMMIT 8775 9.7 11.0 88 9.9 12.1 82
KENDALL R.S. 7740 10.1 10.4 97 10.7 11.8 91
LOOMIS PARK 8240 -M 12.2 * 13.9 14.3 97
NEW FORK LAKE 8340 8.6 8.3 104 8.7 11.0 79
SNIDER BASIN 8250 10.0 10.4 96 10.4 11.5 90
SPRING CREEK DIVIDE 9000 18.2 19.1 95 18.6 20.2 92
TRIPLE PEAK 8500 17.1 18.2 94 18.7 23.6 79
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Basin wide percent of average 97 87
LOWER GREEN RIVER
HAMS FORK 7840 8.1 8.6 94 7.6 10.2 75
HEWINTA 9500 6.1 6.6 92 9.3 8.7 107
HICKERSON PARK 9150 3.9 3.8 103 6.7 6.2 108
HOLE-IN-ROCK 9150 4.5 3.5 129 7.2 6.2 116
INDIAN CREEK 9425 17.8 18.9 94 15.1 19.1 79
KELLEY R.S. 8180 10.7 11.4 94 12.4 14.3 87
STEEL CREEK PARK 10100 8.8 10.2 86 11.0 8.9 124
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Basin wide percent of average 95 94
UPPER BEAR RIVER
BUG LAKE 7950 12.0 13.6 88 11.9 13.4 89
HAYDEN FORK 9400 8.6 10.8 80 12.6 12.5 101
KELLEY R.S. 8180 10.7 11.4 94 12.4 14.3 87
LILY LAKE 9050 8.4 8.6 98 11.9 9.9 120
MONTE CRISTO 8960 15.5 18.2 85 16.8 17.3 97
SALT RIVER SUMMIT 7600 9.7 9.6 101 12.0 12.8 94
TRIAL LAKE 9960 11.1 16.7 66 12.3 16.0 77
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Basin wide percent of average 85 93
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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.