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: DECEMBER 5 , 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 4.8 4.4 109 6.5 7.1 92
COTTONWOOD CREEK 7600 3.9 4.8 81 7.3 7.5 97
GRANITE CREEK 6770 3.3 3.9 85 5.0 7.4 68
GRASSY LAKE 7265 8.8 7.8 113 10.5 11.5 91
GROS VENTRE SUMMIT 8775 4.7 4.1 115 5.4 5.1 106
LEWIS LAKE DIVIDE 7860 9.0 7.7 117 11.4 11.6 98
PHILLIPS BENCH 8200 6.8 6.3 108 7.5 9.0 83
SALT RIVER SUMMIT 7600 1.9 2.5 76 4.3 5.4 80
SNAKE RIVER STATION 6920 -M 4.3 * -M 8.0 *
SPRING CREEK DIVIDE 9000 5.2 6.7 78 6.6 8.2 80
THUMB DIVIDE 7980 7.7 4.1 188 8.1 6.6 123
TOGWOTEE PASS 9580 7.8 6.7 116 8.1 8.7 93
TWO OCEAN PLATEAU 9360 11.5 8.5 135 10.7 9.8 109
WILLOW CREEK 8450 6.4 7.1 90 11.5 9.9 116
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Basin wide percent of average 110 95
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 7.3 7.5 97 6.3 5.5 115
BLACK BEAR 7950 14.2 9.3 153 13.9 10.8 129
CANYON 7940 4.7 3.1 152 5.7 4.6 124
FISHER CREEK 9100 12.5 9.7 129 11.3 10.1 112
MADISON PLATEAU 7750 -M 6.0 * 11.1 7.5 148
NORTHEAST ENTRANCE 7350 2.4 2.2 109 4.3 4.0 108
PARKER PEAK 9400 6.9 7.6 91 -M 5.3 *
SYLVAN LAKE 8420 8.5 7.3 116 10.5 6.9 152
THUMB DIVIDE 7980 7.7 4.1 188 8.1 6.6 123
TWO OCEAN PLATEAU 9360 11.5 8.5 135 10.7 9.8 109
WHISKEY CREEK 6800 6.8 4.2 162 8.6 6.1 141
WHITE MILL 8700 7.5 6.8 110 7.5 8.2 91
WOLVERINE 7650 3.7 2.7 137 4.3 4.4 98
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Basin wide percent of average 128 121
WIND RIVER
BURROUGHS CREEK 8750 3.9 4.2 93 4.4 5.5 80
COLD SPRINGS 9630 4.0 3.0 133 5.5 4.2 131
DEER PARK 9700 4.7 -M * 7.1 -M *
HOBBS PARK 10100 6.8 5.4 126 7.1 4.7 151
LITTLE WARM 9620 4.4 3.5 126 5.1 4.8 106
SOUTH PASS 9040 4.6 5.7 81 6.3 5.6 113
ST. LAWRENCE ALT 8620 3.3 2.2 150 5.9 4.0 148
TOGWOTEE PASS 9580 7.8 6.7 116 8.1 8.7 93
TOWNSEND CREEK 8700 3.6 3.0 120 6.2 4.1 151
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Basin wide percent of average 114 117
BIGHORN BASIN
BALD MTN. 9375 5.4 6.6 82 5.4 5.6 96
BEAR TRAP MEADOW 7900 2.2 2.3 96 5.2 3.3 158
BLACKWATER 9780 10.9 6.3 173 9.8 6.0 163
BONE SPRINGS DIV 9350 4.2 5.4 78 4.6 4.7 98
EVENING STAR 9200 9.9 9.2 108 10.2 7.3 140
GRAVE SPRINGS 8550 2.0 3.1 65 5.3 3.8 139
KIRWIN 9550 4.5 3.6 125 5.2 3.9 133
MARQUETTE 8760 4.5 2.6 173 5.1 3.7 138
MIDDLE POWDER 7760 1.8 3.9 46 7.9 4.3 184
OWL CREEK 8975 2.6 1.2 217 3.2 2.1 152
POWDER RIVER PASS 9480 2.4 3.5 69 4.3 4.0 108
SHELL CREEK 9580 4.6 5.2 88 4.1 4.4 93
SYLVAN LAKE 8420 8.5 7.3 116 10.5 6.9 152
SYLVAN ROAD 8120 5.0 3.8 132 6.3 5.6 113
TIMBER CREEK 7950 2.9 1.4 207 4.4 2.6 169
YOUNTS PEAK 8350 6.1 5.9 103 5.4 5.4 100
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Basin wide percent of average 109 132
SHOSHONE RIVER
BLACKWATER 9780 10.9 6.3 173 9.8 6.0 163
EVENING STAR 9200 9.9 9.2 108 10.2 7.3 140
KIRWIN 9550 4.5 3.6 125 5.2 3.9 133
MARQUETTE 8760 4.5 2.6 173 5.1 3.7 138
SYLVAN LAKE 8420 8.5 7.3 116 10.5 6.9 152
SYLVAN ROAD 8120 5.0 3.8 132 6.3 5.6 113
YOUNTS PEAK 8350 6.1 5.9 103 5.4 5.4 100
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Basin wide percent of average 128 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.2 2.3 96 5.2 3.3 158
BIG GOOSE 7990 1.9 -M * 4.8 -M *
BONE SPRINGS DIV 9350 4.2 5.4 78 4.6 4.7 98
BURGESS JUNCTION 7880 1.9 3.9 49 4.5 4.0 112
CLOUD PEAK RESERVOIR 9860 4.1 3.7 111 5.4 4.5 120
DOME LAKE 8880 2.4 4.3 56 4.1 5.0 82
GRAVE SPRINGS 8550 2.0 3.1 65 5.3 3.8 139
HANSEN SAWMILL 8760 1.8 2.3 78 3.4 3.1 110
MIDDLE POWDER 7760 1.8 3.9 46 7.9 4.3 184
POWDER RIVER PASS 9480 2.4 3.5 69 4.3 4.0 108
SUCKER CREEK 8880 3.3 3.2 103 4.9 4.5 109
TIE CREEK 6870 .6 -M * 3.6 3.8 95
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Basin wide percent of average 73 118
BELLE FOURCHE
BLIND PARK 6890 1.6 3.7 43 7.3 3.4 215
NORTH RAPID CREEK 6130 .8 -M * 7.8 -M *
WARREN PEAK 6520 1.8 3.7 49 7.6 2.9 262
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Basin wide percent of average 46 237
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.2 5.6 57 6.2 6.8 91
DIVIDE PEAK 8800 5.1 6.2 82 11.0 7.4 149
ELK RIVER 8700 1.3 4.2 31 8.0 5.6 143
JOE WRIGHT 10120 5.2 7.1 73 9.0 8.3 108
NORTH FRENCH CREEK 10100 8.6 7.4 116 11.0 6.7 164
OLD BATTLE 10000 8.0 9.7 82 11.9 9.5 125
SOUTH BRUSH CREEK 8400 3.2 2.8 114 8.8 5.8 152
TOWER 10500 11.6 14.8 78 11.6 10.8 107
WEBBER SPRINGS 9200 4.4 7.7 57 8.8 9.1 97
WILLOW CREEK PASS 9540 3.9 3.6 108 5.1 4.2 121
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Basin wide percent of average 79 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.9 7.7 51 6.5 5.7 114
CASPER MTN. 7900 2.8 5.2 54 8.5 5.4 157
DEADMAN HILL 10220 4.6 5.0 92 6.1 5.4 113
DEER PARK 9700 4.7 -M * 7.1 -M *
LAPRELE CREEK 8320 .3 3.1 10 6.0 3.5 171
RENO HILL 8400 4.4 4.2 105 8.6 7.0 123
ROACH 9700 3.2 5.0 64 5.8 6.7 87
SAND LAKE 10080 9.6 9.8 98 10.9 6.4 170
SOUTH PASS 9040 4.6 5.7 81 6.3 5.6 113
WINDY PEAK 7840 .5 2.3 22 6.1 2.9 210
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Basin wide percent of average 71 133
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.7 2.8 61 6.9 5.0 138
DIVIDE PEAK 8800 5.1 6.2 82 11.0 7.4 149
OLD BATTLE 10000 8.0 9.7 82 11.9 9.5 125
SANDSTONE RS 8150 1.8 3.5 51 8.0 5.7 140
WHISKEY PARK 8950 4.6 7.8 59 9.8 6.9 142
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Basin wide percent of average 71 138
UPPER GREEN RIVER
BIG SANDY OPENING 9100 4.0 3.5 114 4.2 5.2 81
BLIND BULL SUM 8650 6.0 8.2 73 6.4 6.9 93
EAST RIM DIVIDE 7930 2.1 2.2 95 3.3 4.8 69
ELKHART PARK G.S. 9400 3.2 3.5 91 4.2 5.1 82
GROS VENTRE SUMMIT 8775 4.7 4.1 115 5.4 5.1 106
KENDALL R.S. 7740 2.8 3.0 93 3.6 4.9 73
LOOMIS PARK 8240 3.1 3.8 82 4.6 6.0 77
NEW FORK LAKE 8340 2.1 2.4 88 2.7 4.6 59
SNIDER BASIN 8250 2.5 3.2 78 3.4 4.8 71
SPRING CREEK DIVIDE 9000 5.2 6.7 78 6.6 8.2 80
TRIPLE PEAK 8500 5.1 6.1 84 6.8 9.9 69
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Basin wide percent of average 87 78
LOWER GREEN RIVER
HAMS FORK 7840 1.3 2.1 62 3.1 4.3 72
HEWINTA 9500 1.8 2.6 69 4.4 4.7 94
HICKERSON PARK 9150 1.4 1.7 82 4.2 3.8 111
HOLE-IN-ROCK 9150 .9 1.5 60 4.5 3.8 118
INDIAN CREEK 9425 5.4 6.8 79 5.1 8.0 64
KELLEY R.S. 8180 2.5 3.8 66 4.1 6.0 68
STEEL CREEK PARK 10100 3.6 5.3 68 5.4 4.9 110
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Basin wide percent of average 71 87
UPPER BEAR RIVER
BUG LAKE 7950 2.7 5.5 49 4.8 6.9 70
HAYDEN FORK 9400 3.0 4.1 73 5.8 5.9 98
KELLEY R.S. 8180 2.5 3.8 66 4.1 6.0 68
LILY LAKE 9050 3.8 3.9 97 6.3 5.3 119
MONTE CRISTO 8960 5.1 6.9 74 8.0 8.5 94
SALT RIVER SUMMIT 7600 1.9 2.5 76 4.3 5.4 80
TRIAL LAKE 9960 4.0 6.6 61 5.9 7.7 77
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Basin wide percent of average 69 86
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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.