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 THURSDAY: DECEMBER 3 , 1998
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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 4.7 4.2 112 6.4 6.8 94
COTTONWOOD CREEK 7600 3.8 4.5 84 7.1 7.2 99
GRANITE CREEK 6770 3.3 3.7 89 4.9 7.1 69
GRASSY LAKE 7265 8.2 7.4 111 10.0 11.0 91
GROS VENTRE SUMMIT 8775 4.6 3.8 121 5.2 4.9 106
LEWIS LAKE DIVIDE 7860 8.7 7.3 119 11.2 11.1 101
PHILLIPS BENCH 8200 6.8 6.0 113 7.5 8.6 87
SALT RIVER SUMMIT 7600 1.8 2.4 75 4.4 5.1 86
SNAKE RIVER STATION 6920 4.5 4.1 110 6.7 7.7 87
SPRING CREEK DIVIDE 9000 5.1 6.3 81 6.3 7.9 80
THUMB DIVIDE 7980 7.4 3.8 195 7.8 6.3 124
TOGWOTEE PASS 9580 7.5 6.4 117 7.8 8.3 94
TWO OCEAN PLATEAU 9360 11.1 8.1 137 10.3 9.3 111
WILLOW CREEK 8450 5.9 6.6 89 10.8 9.4 115
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Basin wide percent of average 112 96
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 7.0 7.2 97 6.2 5.3 117
BLACK BEAR 7950 13.3 8.8 151 13.5 10.4 130
CANYON 7940 4.4 2.9 152 5.3 4.5 118
FISHER CREEK 9100 11.4 9.2 124 10.5 9.6 109
MADISON PLATEAU 7750 -M 5.6 * 10.3 7.2 143
NORTHEAST ENTRANCE 7350 1.9 2.0 95 3.7 3.8 97
PARKER PEAK 9400 6.4 7.3 88 -M 5.2 *
SYLVAN LAKE 8420 8.0 7.0 114 9.8 6.7 146
THUMB DIVIDE 7980 7.4 3.8 195 7.8 6.3 124
TWO OCEAN PLATEAU 9360 11.1 8.1 137 10.3 9.3 111
WHISKEY CREEK 6800 6.0 4.0 150 7.8 5.9 132
WHITE MILL 8700 6.6 6.4 103 6.7 7.8 86
WOLVERINE 7650 3.6 2.5 144 3.8 4.2 90
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Basin wide percent of average 126 118
WIND RIVER
BURROUGHS CREEK 8750 3.9 3.9 100 4.4 5.3 83
COLD SPRINGS 9630 4.0 2.8 143 5.4 4.1 132
DEER PARK 9700 4.5 -M * 6.9 -M *
HOBBS PARK 10100 6.7 5.2 129 7.1 4.6 154
LITTLE WARM 9620 4.4 3.3 133 5.2 4.6 113
SOUTH PASS 9040 4.3 5.5 78 6.1 5.5 111
ST. LAWRENCE ALT 8620 3.2 2.1 152 5.6 3.9 144
TOGWOTEE PASS 9580 7.5 6.4 117 7.8 8.3 94
TOWNSEND CREEK 8700 3.7 2.8 132 6.4 4.0 160
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Basin wide percent of average 118 119
BIGHORN BASIN
BALD MTN. 9375 5.1 6.3 81 5.2 5.3 98
BEAR TRAP MEADOW 7900 2.0 2.2 91 5.1 3.2 159
BLACKWATER 9780 10.6 6.1 174 9.2 5.8 159
BONE SPRINGS DIV 9350 4.0 5.2 77 4.5 4.6 98
EVENING STAR 9200 9.0 8.8 102 9.3 7.1 131
GRAVE SPRINGS 8550 2.0 2.9 69 5.2 3.7 141
KIRWIN 9550 4.6 3.4 135 5.2 3.8 137
MARQUETTE 8760 4.5 2.5 180 5.3 3.6 147
MIDDLE POWDER 7760 1.8 3.8 47 8.0 4.2 190
OWL CREEK 8975 2.7 1.1 245 3.5 2.1 167
POWDER RIVER PASS 9480 2.2 3.3 67 4.2 3.9 108
SHELL CREEK 9580 4.3 5.0 86 3.9 4.2 93
SYLVAN LAKE 8420 8.0 7.0 114 9.8 6.7 146
SYLVAN ROAD 8120 4.5 3.7 122 5.8 5.4 107
TIMBER CREEK 7950 2.7 1.3 208 4.2 2.6 162
YOUNTS PEAK 8350 6.0 5.6 107 5.4 5.2 104
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Basin wide percent of average 109 131
SHOSHONE RIVER
BLACKWATER 9780 10.6 6.1 174 9.2 5.8 159
EVENING STAR 9200 9.0 8.8 102 9.3 7.1 131
KIRWIN 9550 4.6 3.4 135 5.2 3.8 137
MARQUETTE 8760 4.5 2.5 180 5.3 3.6 147
SYLVAN LAKE 8420 8.0 7.0 114 9.8 6.7 146
SYLVAN ROAD 8120 4.5 3.7 122 5.8 5.4 107
YOUNTS PEAK 8350 6.0 5.6 107 5.4 5.2 104
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Basin wide percent of average 127 133
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.0 2.2 91 5.1 3.2 159
BIG GOOSE 7990 1.7 -M * 4.7 -M *
BONE SPRINGS DIV 9350 4.0 5.2 77 4.5 4.6 98
BURGESS JUNCTION 7880 1.9 3.7 51 4.3 3.9 110
CLOUD PEAK RESERVOIR 9860 3.9 3.6 108 5.6 4.4 127
DOME LAKE 8880 2.2 4.2 52 3.7 4.8 77
GRAVE SPRINGS 8550 2.0 2.9 69 5.2 3.7 141
HANSEN SAWMILL 8760 1.8 2.2 82 3.3 3.1 106
MIDDLE POWDER 7760 1.8 3.8 47 8.0 4.2 190
POWDER RIVER PASS 9480 2.2 3.3 67 4.2 3.9 108
SUCKER CREEK 8880 3.2 3.0 107 5.1 4.3 119
TIE CREEK 6870 .7 -M * 3.4 3.7 92
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Basin wide percent of average 73 120
BELLE FOURCHE
BLIND PARK 6890 1.1 3.5 31 7.4 3.3 224
NORTH RAPID CREEK 6130 .5 -M * 7.9 -M *
WARREN PEAK 6520 1.5 3.5 43 7.6 2.8 271
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Basin wide percent of average 37 246
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.2 5.3 60 6.2 6.5 95
DIVIDE PEAK 8800 5.0 6.0 83 11.0 7.0 157
ELK RIVER 8700 1.8 3.9 46 7.9 5.3 149
JOE WRIGHT 10120 4.4 6.9 64 9.0 8.0 112
NORTH FRENCH CREEK 10100 8.6 7.0 123 11.0 6.4 172
OLD BATTLE 10000 8.0 9.2 87 12.0 9.1 132
SOUTH BRUSH CREEK 8400 3.2 2.7 119 8.7 5.5 158
TOWER 10500 11.6 14.3 81 11.6 10.3 113
WEBBER SPRINGS 9200 4.4 7.4 59 8.7 8.8 99
WILLOW CREEK PASS 9540 3.9 3.5 111 4.9 4.0 123
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Basin wide percent of average 82 128
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.2 7.4 57 6.5 5.5 118
CASPER MTN. 7900 2.9 4.9 59 8.5 5.3 160
DEADMAN HILL 10220 4.8 4.7 102 6.2 5.2 119
DEER PARK 9700 4.5 -M * 6.9 -M *
LAPRELE CREEK 8320 .3 2.9 10 6.1 3.4 179
RENO HILL 8400 4.5 4.1 110 8.7 6.8 128
ROACH 9700 3.3 4.7 70 5.8 6.5 89
SAND LAKE 10080 9.6 9.3 103 10.9 6.2 176
SOUTH PASS 9040 4.3 5.5 78 6.1 5.5 111
WINDY PEAK 7840 .6 2.2 27 6.3 2.8 225
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Basin wide percent of average 75 138
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.2 2.7 81 6.8 4.8 142
DIVIDE PEAK 8800 5.0 6.0 83 11.0 7.0 157
OLD BATTLE 10000 8.0 9.2 87 12.0 9.1 132
SANDSTONE RS 8150 1.7 3.3 52 8.0 5.4 148
WHISKEY PARK 8950 4.6 7.4 62 9.8 6.6 148
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Basin wide percent of average 75 145
UPPER GREEN RIVER
BIG SANDY OPENING 9100 3.8 3.3 115 4.0 4.9 82
BLIND BULL SUM 8650 6.0 7.8 77 6.3 6.6 95
EAST RIM DIVIDE 7930 2.3 1.8 128 3.4 4.6 74
ELKHART PARK G.S. 9400 3.3 3.3 100 4.2 4.9 86
GROS VENTRE SUMMIT 8775 4.6 3.8 121 5.2 4.9 106
KENDALL R.S. 7740 3.0 2.7 111 3.8 4.7 81
LOOMIS PARK 8240 3.2 3.6 89 4.6 5.8 79
NEW FORK LAKE 8340 2.2 2.3 96 3.0 4.4 68
SNIDER BASIN 8250 2.4 3.0 80 3.4 4.6 74
SPRING CREEK DIVIDE 9000 5.1 6.3 81 6.3 7.9 80
TRIPLE PEAK 8500 5.1 5.8 88 6.9 9.4 73
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Basin wide percent of average 94 81
LOWER GREEN RIVER
HAMS FORK 7840 1.3 1.9 68 2.9 4.1 71
HEWINTA 9500 1.6 2.5 64 4.3 4.5 96
HICKERSON PARK 9150 1.3 1.7 76 4.1 3.7 111
HOLE-IN-ROCK 9150 1.0 1.5 67 4.4 3.7 119
INDIAN CREEK 9425 5.2 6.5 80 5.3 7.6 70
KELLEY R.S. 8180 2.4 3.5 69 4.1 5.8 71
STEEL CREEK PARK 10100 3.7 5.1 73 5.5 4.7 117
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Basin wide percent of average 73 90
UPPER BEAR RIVER
BUG LAKE 7950 2.4 5.3 45 4.5 6.7 67
HAYDEN FORK 9400 2.6 3.9 67 5.5 5.7 96
KELLEY R.S. 8180 2.4 3.5 69 4.1 5.8 71
LILY LAKE 9050 3.8 3.7 103 5.9 5.1 116
MONTE CRISTO 8960 4.4 6.6 67 7.2 8.2 88
SALT RIVER SUMMIT 7600 1.8 2.4 75 4.4 5.1 86
TRIAL LAKE 9960 3.6 6.3 57 5.3 7.4 72
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Basin wide percent of average 66 84
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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.