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 WEDNESDAY: FEBRUARY 3 , 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 16.1 12.7 127 16.6 16.6 100
COTTONWOOD CREEK 7600 14.6 14.3 102 17.3 17.7 98
GRANITE CREEK 6770 12.7 12.5 102 14.9 17.5 85
GRASSY LAKE 7265 28.5 24.0 119 28.8 26.8 107
GROS VENTRE SUMMIT 8775 9.6 10.8 89 9.6 11.8 81
LEWIS LAKE DIVIDE 7860 26.8 23.3 115 26.9 27.3 99
PHILLIPS BENCH 8200 20.6 19.8 104 20.2 21.6 94
SALT RIVER SUMMIT 7600 8.9 9.2 97 11.2 12.5 90
SNAKE RIVER STATION 6920 14.9 12.7 117 18.4 18.9 97
SPRING CREEK DIVIDE 9000 17.0 18.6 91 17.5 19.7 89
THUMB DIVIDE 7980 15.3 11.6 132 15.0 15.6 96
TOGWOTEE PASS 9580 -M 17.2 * 19.9 20.4 98
TWO OCEAN PLATEAU 9360 24.6 18.6 132 21.1 22.9 92
WILLOW CREEK 8450 20.4 21.4 95 24.6 23.2 106
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Basin wide percent of average 110 96
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.1 16.3 117 17.0 12.3 138
BLACK BEAR 7950 32.9 25.0 132 -M 27.0 *
CANYON 7940 12.5 8.5 147 13.4 10.1 133
FISHER CREEK 9100 28.4 24.6 115 23.8 25.0 95
MADISON PLATEAU 7750 -M 16.4 * 20.7 17.6 118
NORTHEAST ENTRANCE 7350 8.9 6.5 137 10.7 8.4 127
PARKER PEAK 9400 17.0 14.6 116 -M 10.7 *
SYLVAN LAKE 8420 19.1 15.2 126 21.1 13.4 157
THUMB DIVIDE 7980 15.3 11.6 132 15.0 15.6 96
TWO OCEAN PLATEAU 9360 24.6 18.6 132 21.1 22.9 92
WHISKEY CREEK 6800 13.9 11.4 122 16.6 14.7 113
WHITE MILL 8700 18.9 17.2 110 17.0 19.6 87
WOLVERINE 7650 11.2 8.1 138 10.1 9.0 112
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Basin wide percent of average 125 111
WIND RIVER
BURROUGHS CREEK 8750 12.0 10.6 113 13.1 11.5 114
COLD SPRINGS 9630 6.5 5.9 110 8.3 7.0 119
DEER PARK 9700 9.8 -M * 13.7 -M *
HOBBS PARK 10100 10.9 10.1 108 10.5 9.3 113
LITTLE WARM 9620 8.9 7.3 122 10.0 9.0 111
SOUTH PASS 9040 11.2 11.5 97 12.6 11.0 115
ST. LAWRENCE ALT 8620 4.5 4.9 92 7.3 6.4 114
TOGWOTEE PASS 9580 -M 17.2 * 19.9 20.4 98
TOWNSEND CREEK 8700 5.8 6.3 92 8.3 7.9 105
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Basin wide percent of average 106 109
BIGHORN BASIN
BALD MTN. 9375 14.1 14.0 101 13.2 11.9 111
BEAR TRAP MEADOW 7900 4.5 4.9 92 6.9 5.5 125
BLACKWATER 9780 21.4 14.3 150 18.4 12.4 148
BONE SPRINGS DIV 9350 11.2 10.8 104 11.3 9.6 118
EVENING STAR 9200 24.6 18.2 135 24.9 15.6 160
GRAVE SPRINGS 8550 4.8 6.2 77 7.8 6.5 120
KIRWIN 9550 8.3 6.7 124 9.5 6.9 138
MARQUETTE 8760 6.1 5.2 117 6.9 5.9 117
MIDDLE POWDER 7760 5.0 7.9 63 11.0 7.9 139
OWL CREEK 8975 4.2 2.9 145 4.9 3.9 126
POWDER RIVER PASS 9480 8.4 7.1 118 10.4 7.9 132
SHELL CREEK 9580 12.2 10.4 117 10.9 9.0 121
SYLVAN LAKE 8420 19.1 15.2 126 21.1 13.4 157
SYLVAN ROAD 8120 12.6 8.7 145 14.6 11.3 129
TIMBER CREEK 7950 3.8 3.7 103 5.6 4.3 130
YOUNTS PEAK 8350 15.3 12.4 123 13.4 11.5 117
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Basin wide percent of average 118 133
SHOSHONE RIVER
BLACKWATER 9780 21.4 14.3 150 18.4 12.4 148
EVENING STAR 9200 24.6 18.2 135 24.9 15.6 160
KIRWIN 9550 8.3 6.7 124 9.5 6.9 138
MARQUETTE 8760 6.1 5.2 117 6.9 5.9 117
SYLVAN LAKE 8420 19.1 15.2 126 21.1 13.4 157
SYLVAN ROAD 8120 12.6 8.7 145 14.6 11.3 129
YOUNTS PEAK 8350 15.3 12.4 123 13.4 11.5 117
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Basin wide percent of average 133 141
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.5 4.9 92 6.9 5.5 125
BIG GOOSE 7990 3.9 -M * 6.7 -M *
BONE SPRINGS DIV 9350 11.2 10.8 104 11.3 9.6 118
BURGESS JUNCTION 7880 5.5 7.7 71 7.4 7.2 103
CLOUD PEAK RESERVOIR 9860 9.8 8.2 120 8.5 8.3 102
DOME LAKE 8880 5.7 9.2 62 7.1 8.8 81
GRAVE SPRINGS 8550 4.8 6.2 77 7.8 6.5 120
HANSEN SAWMILL 8760 3.8 4.7 81 5.9 5.1 116
MIDDLE POWDER 7760 5.0 7.9 63 11.0 7.9 139
POWDER RIVER PASS 9480 8.4 7.1 118 10.4 7.9 132
SUCKER CREEK 8880 6.9 7.7 90 8.8 8.7 101
TIE CREEK 6870 2.4 -M * 6.0 6.9 87
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Basin wide percent of average 88 111
BELLE FOURCHE
BLIND PARK 6890 5.3 7.3 73 12.3 6.2 198
NORTH RAPID CREEK 6130 4.0 -M * 10.7 -M *
WARREN PEAK 6520 6.0 7.3 82 10.9 5.3 206
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Basin wide percent of average 77 202
UPPER N. PLATTE RIVER
COLUMBINE 9400 14.2 16.2 88 15.6 16.7 93
DIVIDE PEAK 8800 12.9 13.6 95 18.4 16.3 113
ELK RIVER 8700 -M 12.8 * 16.8 12.7 132
JOE WRIGHT 10120 14.7 14.3 103 19.9 16.8 118
NORTH FRENCH CREEK 10100 20.3 16.3 125 20.1 15.4 131
OLD BATTLE 10000 18.5 20.9 89 24.5 19.8 124
SOUTH BRUSH CREEK 8400 5.3 7.3 73 14.9 10.9 137
TOWER 10500 28.7 30.5 94 26.8 24.5 109
WEBBER SPRINGS 9200 12.7 17.8 71 18.0 16.9 107
WILLOW CREEK PASS 9540 8.1 7.4 109 9.4 8.0 118
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Basin wide percent of average 94 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.8 16.3 85 16.0 12.3 130
CASPER MTN. 7900 7.0 9.6 73 12.3 8.8 140
DEADMAN HILL 10220 13.2 11.3 117 13.4 10.5 128
DEER PARK 9700 9.8 -M * 13.7 -M *
LAPRELE CREEK 8320 2.5 6.7 37 10.0 7.7 130
RENO HILL 8400 8.9 8.5 105 13.3 11.6 115
ROACH 9700 12.7 11.2 113 15.1 14.4 105
SAND LAKE 10080 22.5 21.6 104 20.8 13.2 158
SOUTH PASS 9040 11.2 11.5 97 12.6 11.0 115
WINDY PEAK 7840 3.5 4.6 76 9.3 6.0 155
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Basin wide percent of average 94 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.9 7.5 119 12.7 11.0 115
DIVIDE PEAK 8800 12.9 13.6 95 18.4 16.3 113
OLD BATTLE 10000 18.5 20.9 89 24.5 19.8 124
SANDSTONE RS 8150 8.3 9.5 87 14.9 13.5 110
WHISKEY PARK 8950 17.2 18.8 91 20.8 20.2 103
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Basin wide percent of average 94 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.8 9.8 110 9.8 12.1 81
BLIND BULL SUM 8650 18.5 19.4 95 15.3 17.1 89
EAST RIM DIVIDE 7930 8.8 9.5 93 9.2 11.3 81
ELKHART PARK G.S. 9400 8.9 9.1 98 9.5 11.9 80
GROS VENTRE SUMMIT 8775 9.6 10.8 89 9.6 11.8 81
KENDALL R.S. 7740 9.6 10.1 95 10.2 11.5 89
LOOMIS PARK 8240 -M 11.9 * 13.3 14.0 95
NEW FORK LAKE 8340 7.9 8.0 99 8.0 10.8 74
SNIDER BASIN 8250 9.2 10.1 91 9.6 11.3 85
SPRING CREEK DIVIDE 9000 17.0 18.6 91 17.5 19.7 89
TRIPLE PEAK 8500 16.6 17.7 94 17.8 23.1 77
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Basin wide percent of average 95 84
LOWER GREEN RIVER
HAMS FORK 7840 7.5 8.3 90 7.1 10.0 71
HEWINTA 9500 6.1 6.4 95 9.2 8.5 108
HICKERSON PARK 9150 4.0 3.6 111 6.8 6.1 111
HOLE-IN-ROCK 9150 4.5 3.3 136 7.2 6.1 118
INDIAN CREEK 9425 16.8 18.3 92 14.2 18.6 76
KELLEY R.S. 8180 9.9 11.0 90 11.6 13.9 83
STEEL CREEK PARK 10100 8.9 10.0 89 10.9 8.7 125
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Basin wide percent of average 95 93
UPPER BEAR RIVER
BUG LAKE 7950 11.4 13.2 86 11.5 13.0 88
HAYDEN FORK 9400 8.5 10.5 81 12.5 12.1 103
KELLEY R.S. 8180 9.9 11.0 90 11.6 13.9 83
LILY LAKE 9050 -M 8.3 * -M 9.7 *
MONTE CRISTO 8960 -M 17.7 * -M 16.8 *
SALT RIVER SUMMIT 7600 8.9 9.2 97 11.2 12.5 90
TRIAL LAKE 9960 10.9 16.1 68 12.1 15.5 78
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Basin wide percent of average 83 88
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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.