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: NOVEMBER 25 , 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 3.4 3.2 106 4.8 5.6 86
COTTONWOOD CREEK 7600 3.1 3.5 89 6.3 6.0 105
GRANITE CREEK 6770 2.1 2.9 72 3.5 5.9 59
GRASSY LAKE 7265 6.0 5.7 105 7.8 9.1 86
GROS VENTRE SUMMIT 8775 3.7 3.2 116 4.3 4.1 105
LEWIS LAKE DIVIDE 7860 5.6 5.7 98 8.2 9.2 89
PHILLIPS BENCH 8200 5.2 4.6 113 5.8 7.1 82
SALT RIVER SUMMIT 7600 1.4 1.8 78 3.6 4.3 84
SNAKE RIVER STATION 6920 3.3 3.2 103 5.3 6.3 84
SPRING CREEK DIVIDE 9000 3.6 5.1 71 5.0 6.4 78
THUMB DIVIDE 7980 5.6 3.0 187 5.9 5.2 113
TOGWOTEE PASS 9580 6.2 5.2 119 6.5 6.8 96
TWO OCEAN PLATEAU 9360 8.7 6.9 126 8.0 7.7 104
WILLOW CREEK 8450 4.7 5.1 92 9.4 7.8 121
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Basin wide percent of average 106 92
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 5.5 6.2 89 4.7 4.5 104
BLACK BEAR 7950 10.1 7.2 140 10.3 8.6 120
CANYON 7940 3.6 2.3 157 4.3 3.8 113
FISHER CREEK 9100 8.7 7.5 116 8.2 8.0 102
MADISON PLATEAU 7750 -M 4.5 * 7.7 6.0 128
NORTHEAST ENTRANCE 7350 1.9 1.6 119 3.3 3.3 100
PARKER PEAK 9400 5.3 6.4 83 -M 4.4 *
SYLVAN LAKE 8420 6.7 5.8 116 8.4 5.7 147
THUMB DIVIDE 7980 5.6 3.0 187 5.9 5.2 113
TWO OCEAN PLATEAU 9360 8.7 6.9 126 8.0 7.7 104
WHISKEY CREEK 6800 4.5 3.1 145 5.8 4.9 118
WHITE MILL 8700 5.4 5.2 104 5.5 6.5 85
WOLVERINE 7650 2.7 1.9 142 3.4 3.6 94
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Basin wide percent of average 120 111
WIND RIVER
BURROUGHS CREEK 8750 3.1 3.1 100 3.7 4.4 84
COLD SPRINGS 9630 3.4 2.4 142 4.8 3.6 133
DEER PARK 9700 4.4 -M * 6.4 -M *
HOBBS PARK 10100 5.6 4.5 124 6.3 3.9 162
LITTLE WARM 9620 3.4 2.8 121 4.2 4.0 105
SOUTH PASS 9040 4.0 4.8 83 5.8 4.7 123
ST. LAWRENCE ALT 8620 2.8 1.7 165 5.1 3.4 150
TOGWOTEE PASS 9580 6.2 5.2 119 6.5 6.8 96
TOWNSEND CREEK 8700 3.5 2.4 146 6.0 3.5 171
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Basin wide percent of average 119 124
BIGHORN BASIN
BALD MTN. 9375 4.9 5.3 92 4.9 4.5 109
BEAR TRAP MEADOW 7900 2.0 1.8 111 5.0 2.8 179
BLACKWATER 9780 8.8 5.2 169 7.7 5.0 154
BONE SPRINGS DIV 9350 3.7 4.6 80 4.2 4.0 105
EVENING STAR 9200 6.7 7.7 87 7.4 6.0 123
GRAVE SPRINGS 8550 1.9 2.5 76 5.2 3.3 158
KIRWIN 9550 3.9 3.0 130 4.4 3.3 133
MARQUETTE 8760 4.1 2.1 195 4.9 3.2 153
MIDDLE POWDER 7760 1.7 3.2 53 7.8 3.7 211
OWL CREEK 8975 2.5 1.0 250 3.3 1.8 183
POWDER RIVER PASS 9480 2.1 2.8 75 4.1 3.4 121
SHELL CREEK 9580 4.2 4.4 95 3.9 3.7 105
SYLVAN LAKE 8420 6.7 5.8 116 8.4 5.7 147
SYLVAN ROAD 8120 3.7 3.1 119 4.8 4.6 104
TIMBER CREEK 7950 2.7 1.0 270 4.1 2.3 178
YOUNTS PEAK 8350 5.0 4.8 104 4.4 4.4 100
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Basin wide percent of average 111 137
SHOSHONE RIVER
BLACKWATER 9780 8.8 5.2 169 7.7 5.0 154
EVENING STAR 9200 6.7 7.7 87 7.4 6.0 123
KIRWIN 9550 3.9 3.0 130 4.4 3.3 133
MARQUETTE 8760 4.1 2.1 195 4.9 3.2 153
SYLVAN LAKE 8420 6.7 5.8 116 8.4 5.7 147
SYLVAN ROAD 8120 3.7 3.1 119 4.8 4.6 104
YOUNTS PEAK 8350 5.0 4.8 104 4.4 4.4 100
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Basin wide percent of average 123 130
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.0 1.8 111 5.0 2.8 179
BIG GOOSE 7990 1.7 -M * 4.6 -M *
BONE SPRINGS DIV 9350 3.7 4.6 80 4.2 4.0 105
BURGESS JUNCTION 7880 1.8 3.2 56 4.2 3.4 124
CLOUD PEAK RESERVOIR 9860 3.6 3.0 120 5.0 3.9 128
DOME LAKE 8880 2.1 3.6 58 3.8 4.2 90
GRAVE SPRINGS 8550 1.9 2.5 76 5.2 3.3 158
HANSEN SAWMILL 8760 1.6 1.8 89 3.3 2.7 122
MIDDLE POWDER 7760 1.7 3.2 53 7.8 3.7 211
POWDER RIVER PASS 9480 2.1 2.8 75 4.1 3.4 121
SUCKER CREEK 8880 2.9 2.5 116 4.6 3.8 121
TIE CREEK 6870 .8 -M * 3.3 3.3 100
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Basin wide percent of average 81 131
BELLE FOURCHE
BLIND PARK 6890 1.1 3.0 37 7.3 2.9 252
NORTH RAPID CREEK 6130 1.1 -M * 7.8 -M *
WARREN PEAK 6520 1.3 3.0 43 7.6 2.4 317
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Basin wide percent of average 40 281
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.1 4.3 72 6.0 5.5 109
DIVIDE PEAK 8800 3.9 5.0 78 9.5 6.0 158
ELK RIVER 8700 1.8 2.9 62 7.7 4.5 171
JOE WRIGHT 10120 4.1 6.0 68 9.0 6.9 130
NORTH FRENCH CREEK 10100 8.2 5.9 139 10.5 5.3 198
OLD BATTLE 10000 6.7 7.8 86 10.4 7.7 135
SOUTH BRUSH CREEK 8400 3.4 2.1 162 8.6 4.6 187
TOWER 10500 10.8 12.2 89 11.1 8.7 128
WEBBER SPRINGS 9200 3.5 6.0 58 7.7 7.4 104
WILLOW CREEK PASS 9540 3.6 2.8 129 5.1 3.5 146
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Basin wide percent of average 89 142
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.9 6.0 65 6.3 4.7 134
CASPER MTN. 7900 2.9 4.0 72 8.5 4.7 181
DEADMAN HILL 10220 -M 3.9 * 6.1 4.6 133
DEER PARK 9700 4.4 -M * 6.4 -M *
LAPRELE CREEK 8320 .4 2.4 17 6.1 2.9 210
RENO HILL 8400 4.6 3.5 131 8.6 5.8 148
ROACH 9700 3.3 3.9 85 5.7 5.5 104
SAND LAKE 10080 9.2 7.9 116 10.6 5.3 200
SOUTH PASS 9040 4.0 4.8 83 5.8 4.7 123
WINDY PEAK 7840 .7 1.8 39 6.2 2.4 258
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Basin wide percent of average 85 157
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.5 2.1 71 6.2 4.0 155
DIVIDE PEAK 8800 3.9 5.0 78 9.5 6.0 158
OLD BATTLE 10000 6.7 7.8 86 10.4 7.7 135
SANDSTONE RS 8150 1.2 2.7 44 7.1 4.5 158
WHISKEY PARK 8950 4.3 6.1 70 9.4 5.3 177
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Basin wide percent of average 74 155
UPPER GREEN RIVER
BIG SANDY OPENING 9100 3.5 2.7 130 3.8 4.1 93
BLIND BULL SUM 8650 4.5 6.4 70 5.0 5.4 93
EAST RIM DIVIDE 7930 1.8 1.4 129* 2.8 3.8 74
ELKHART PARK G.S. 9400 3.1 2.7 115 3.8 4.1 93
GROS VENTRE SUMMIT 8775 3.7 3.2 116 4.3 4.1 105
KENDALL R.S. 7740 2.3 2.0 115 3.1 3.9 79
LOOMIS PARK 8240 2.4 2.7 89 3.7 4.8 77
NEW FORK LAKE 8340 2.0 1.7 118 2.5 3.6 69
SNIDER BASIN 8250 1.7 2.2 77 2.8 3.8 74
SPRING CREEK DIVIDE 9000 3.6 5.1 71 5.0 6.4 78
TRIPLE PEAK 8500 4.1 4.5 91 5.7 7.8 73
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Basin wide percent of average 95 82
LOWER GREEN RIVER
HAMS FORK 7840 1.0 1.3 77 2.8 3.4 82
HEWINTA 9500 1.0 1.9 53 4.2 4.0 105
HICKERSON PARK 9150 1.4 1.5 93 4.0 3.3 121
HOLE-IN-ROCK 9150 .8 1.2 67 4.3 3.3 130
INDIAN CREEK 9425 4.2 5.2 81 4.3 6.3 68
KELLEY R.S. 8180 2.0 2.7 74 3.6 4.8 75
STEEL CREEK PARK 10100 3.4 4.3 79 5.3 4.2 126
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Basin wide percent of average 76 97
UPPER BEAR RIVER
BUG LAKE 7950 1.3 4.0 33 3.8 5.9 64
HAYDEN FORK 9400 2.6 3.1 84 5.3 4.9 108
KELLEY R.S. 8180 2.0 2.7 74 3.6 4.8 75
LILY LAKE 9050 3.4 3.0 113 5.8 4.5 129
MONTE CRISTO 8960 3.3 5.0 66 6.2 7.0 89
SALT RIVER SUMMIT 7600 1.4 1.8 78 3.6 4.3 84
TRIAL LAKE 9960 3.3 5.2 63 5.0 6.3 79
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Basin wide percent of average 70 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.