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 TUESDAY: DECEMBER 8 , 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 4.6 4.8 96 6.6 7.6 87
COTTONWOOD CREEK 7600 3.9 5.3 74 7.3 8.0 91
GRANITE CREEK 6770 3.0 4.4 68 4.9 7.9 62
GRASSY LAKE 7265 9.2 8.6 107 11.0 12.2 90
GROS VENTRE SUMMIT 8775 4.5 4.4 102 5.4 5.4 100
LEWIS LAKE DIVIDE 7860 9.1 8.4 108 11.6 12.4 94
PHILLIPS BENCH 8200 6.7 6.9 97 7.5 9.6 78
SALT RIVER SUMMIT 7600 1.9 2.8 68 4.3 5.7 75
SNAKE RIVER STATION 6920 4.6 4.7 98 6.9 8.5 81
SPRING CREEK DIVIDE 9000 5.2 7.4 70 6.6 8.8 75
THUMB DIVIDE 7980 7.7 4.5 171 8.1 7.0 116
TOGWOTEE PASS 9580 7.8 7.3 107 8.2 9.2 89
TWO OCEAN PLATEAU 9360 11.5 9.0 128 10.7 10.4 103
WILLOW CREEK 8450 6.3 7.8 81 11.7 10.5 111
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Basin wide percent of average 100 90
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 7.2 8.0 90 6.5 5.9 110
BLACK BEAR 7950 14.7 10.0 147 14.4 11.5 125
CANYON 7940 4.7 3.4 138 5.7 4.9 116
FISHER CREEK 9100 12.7 10.4 122 11.5 10.7 107
MADISON PLATEAU 7750 -M 6.5 * 11.3 8.0 141
NORTHEAST ENTRANCE 7350 2.4 2.4 100 4.3 4.2 102
PARKER PEAK 9400 7.0 8.0 88 -M 5.6 *
SYLVAN LAKE 8420 8.8 7.8 113 10.9 7.2 151
THUMB DIVIDE 7980 7.7 4.5 171 8.1 7.0 116
TWO OCEAN PLATEAU 9360 11.5 9.0 128 10.7 10.4 103
WHISKEY CREEK 6800 6.8 4.5 151 8.8 6.5 135
WHITE MILL 8700 7.6 7.3 104 7.5 8.7 86
WOLVERINE 7650 3.7 3.0 123 4.4 4.6 96
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Basin wide percent of average 121 116
WIND RIVER
BURROUGHS CREEK 8750 3.7 4.6 80 4.3 5.8 74
COLD SPRINGS 9630 3.9 3.2 122 5.6 4.3 130
DEER PARK 9700 4.9 -M * 7.1 -M *
HOBBS PARK 10100 6.7 5.7 118 7.4 5.0 148
LITTLE WARM 9620 4.3 3.7 116 5.2 5.0 104
SOUTH PASS 9040 4.5 6.1 74 6.3 5.9 107
ST. LAWRENCE ALT 8620 3.2 2.3 139 6.0 4.1 146
TOGWOTEE PASS 9580 7.8 7.3 107 8.2 9.2 89
TOWNSEND CREEK 8700 3.5 3.2 109 6.3 4.3 147
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Basin wide percent of average 104 113
BIGHORN BASIN
BALD MTN. 9375 5.4 7.0 77 5.4 5.9 92
BEAR TRAP MEADOW 7900 2.4 2.5 96 5.3 3.4 156
BLACKWATER 9780 10.8 6.8 159 9.9 6.3 157
BONE SPRINGS DIV 9350 4.0 5.7 70 4.6 5.0 92
EVENING STAR 9200 10.1 9.7 104 10.4 7.7 135
GRAVE SPRINGS 8550 2.1 3.3 64 5.4 3.9 138
KIRWIN 9550 4.6 3.8 121 5.2 4.0 130
MARQUETTE 8760 4.6 2.8 164 5.4 3.8 142
MIDDLE POWDER 7760 1.8 4.2 43 8.2 4.5 182
OWL CREEK 8975 2.7 1.3 208 3.6 2.2 164
POWDER RIVER PASS 9480 2.3 3.7 62 4.4 4.2 105
SHELL CREEK 9580 4.6 5.5 84 4.4 4.6 96
SYLVAN LAKE 8420 8.8 7.8 113 10.9 7.2 151
SYLVAN ROAD 8120 5.0 4.1 122 6.6 5.8 114
TIMBER CREEK 7950 2.7 1.5 180 4.5 2.7 167
YOUNTS PEAK 8350 5.9 6.3 94 5.2 5.7 91
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Basin wide percent of average 102 129
SHOSHONE RIVER
BLACKWATER 9780 10.8 6.8 159 9.9 6.3 157
EVENING STAR 9200 10.1 9.7 104 10.4 7.7 135
KIRWIN 9550 4.6 3.8 121 5.2 4.0 130
MARQUETTE 8760 4.6 2.8 164 5.4 3.8 142
SYLVAN LAKE 8420 8.8 7.8 113 10.9 7.2 151
SYLVAN ROAD 8120 5.0 4.1 122 6.6 5.8 114
YOUNTS PEAK 8350 5.9 6.3 94 5.2 5.7 91
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Basin wide percent of average 121 132
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.4 2.5 96 5.3 3.4 156
BIG GOOSE 7990 2.0 -M * 5.1 -M *
BONE SPRINGS DIV 9350 4.0 5.7 70 4.6 5.0 92
BURGESS JUNCTION 7880 2.0 4.1 49 4.5 4.2 107
CLOUD PEAK RESERVOIR 9860 4.1 4.0 102 5.5 4.7 117
DOME LAKE 8880 2.5 4.6 54 4.2 5.2 81
GRAVE SPRINGS 8550 2.1 3.3 64 5.4 3.9 138
HANSEN SAWMILL 8760 1.8 2.4 75 3.6 3.2 112
MIDDLE POWDER 7760 1.8 4.2 43 8.2 4.5 182
POWDER RIVER PASS 9480 2.3 3.7 62 4.4 4.2 105
SUCKER CREEK 8880 3.3 3.4 97 5.1 4.7 109
TIE CREEK 6870 .6 -M * 3.7 4.0 93
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Basin wide percent of average 69 116
BELLE FOURCHE
BLIND PARK 6890 1.2 3.9 31 7.6 3.6 211
NORTH RAPID CREEK 6130 1.2 -M * 7.9 -M *
WARREN PEAK 6520 1.4 3.9 36 7.5 3.0 250
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Basin wide percent of average 33 229
UPPER N. PLATTE RIVER
COLUMBINE 9400 2.8 6.1 46 5.4 7.2 75
DIVIDE PEAK 8800 5.2 6.7 78 11.0 7.9 139
ELK RIVER 8700 1.3 4.7 28 7.8 5.9 132
JOE WRIGHT 10120 6.4 7.6 84 9.2 8.7 106
NORTH FRENCH CREEK 10100 8.5 7.9 108 11.2 7.2 156
OLD BATTLE 10000 8.3 10.3 81 11.9 10.0 119
SOUTH BRUSH CREEK 8400 2.8 3.1 90 9.1 6.3 144
TOWER 10500 12.0 15.7 76 12.0 11.4 105
WEBBER SPRINGS 9200 4.3 8.3 52 8.8 9.6 92
WILLOW CREEK PASS 9540 3.5 3.9 90 4.3 4.4 98
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Basin wide percent of average 74 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.2 8.3 51 6.4 6.0 107
CASPER MTN. 7900 1.8 5.5 33 8.4 5.6 150
DEADMAN HILL 10220 5.2 5.4 96 6.1 5.6 109
DEER PARK 9700 4.9 -M * 7.1 -M *
LAPRELE CREEK 8320 .2 3.3 6 6.2 3.7 168
RENO HILL 8400 -M 4.5 * 8.5 7.3 116
ROACH 9700 3.1 5.3 58 6.0 7.1 85
SAND LAKE 10080 9.8 10.4 94 11.2 6.8 165
SOUTH PASS 9040 4.5 6.1 74 6.3 5.9 107
WINDY PEAK 7840 .4 2.4 17 6.4 3.0 213
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Basin wide percent of average 63 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.3 3.1 74 7.3 5.3 138
DIVIDE PEAK 8800 5.2 6.7 78 11.0 7.9 139
OLD BATTLE 10000 8.3 10.3 81 11.9 10.0 119
SANDSTONE RS 8150 1.9 3.9 49 8.1 6.1 133
WHISKEY PARK 8950 4.3 8.4 51 9.8 7.5 131
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Basin wide percent of average 68 131
UPPER GREEN RIVER
BIG SANDY OPENING 9100 4.0 3.8 105 4.1 5.5 75
BLIND BULL SUM 8650 5.9 8.8 67 6.5 7.3 89
EAST RIM DIVIDE 7930 2.1 2.8 75 3.3 5.1 65
ELKHART PARK G.S. 9400 3.2 3.8 84 4.2 5.4 78
GROS VENTRE SUMMIT 8775 4.5 4.4 102 5.4 5.4 100
KENDALL R.S. 7740 2.8 3.3 85 3.4 5.2 65
LOOMIS PARK 8240 3.1 4.2 74 4.5 6.4 70
NEW FORK LAKE 8340 2.1 2.7 78 2.7 4.9 55
SNIDER BASIN 8250 2.4 3.6 67 3.4 5.1 67
SPRING CREEK DIVIDE 9000 5.2 7.4 70 6.6 8.8 75
TRIPLE PEAK 8500 4.9 6.7 73 6.8 10.5 65
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Basin wide percent of average 78 73
LOWER GREEN RIVER
HAMS FORK 7840 1.2 2.4 50 3.1 4.5 69
HEWINTA 9500 1.5 2.7 56 4.7 4.9 96
HICKERSON PARK 9150 1.4 1.9 74 4.2 3.9 108
HOLE-IN-ROCK 9150 2.0 1.7 118 4.7 3.9 121
INDIAN CREEK 9425 5.4 7.4 73 5.2 8.5 61
KELLEY R.S. 8180 2.5 4.2 60 4.1 6.4 64
STEEL CREEK PARK 10100 3.1 5.5 56 5.7 5.1 112
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Basin wide percent of average 66 85
UPPER BEAR RIVER
BUG LAKE 7950 2.7 6.0 45 4.9 7.2 68
HAYDEN FORK 9400 3.0 4.4 68 6.1 6.2 98
KELLEY R.S. 8180 2.5 4.2 60 4.1 6.4 64
LILY LAKE 9050 2.8 4.1 68 6.4 5.5 116
MONTE CRISTO 8960 5.1 7.5 68 8.2 8.9 92
SALT RIVER SUMMIT 7600 1.9 2.8 68 4.3 5.7 75
TRIAL LAKE 9960 3.8 7.0 54 5.8 8.1 72
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Basin wide percent of average 61 83
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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.