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 SUNDAY: NOVEMBER 22 , 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 2.4 2.9 83 3.6 5.2 69
COTTONWOOD CREEK 7600 2.6 3.2 81 5.7 5.5 104
GRANITE CREEK 6770 1.6 2.6 62 2.7 5.5 49
GRASSY LAKE 7265 4.8 5.0 96 6.6 8.3 80
GROS VENTRE SUMMIT 8775 2.9 2.9 100 3.5 3.8 92
LEWIS LAKE DIVIDE 7860 5.5 5.2 106 6.6 8.4 79
PHILLIPS BENCH 8200 3.5 4.1 85 4.1 6.5 63
SALT RIVER SUMMIT 7600 1.1 1.5 73 3.3 3.9 85
SNAKE RIVER STATION 6920 2.5 2.8 89 4.3 5.8 74
SPRING CREEK DIVIDE 9000 2.7 4.7 57 4.2 5.9 71
THUMB DIVIDE 7980 3.5 2.6 135 3.9 4.8 81
TOGWOTEE PASS 9580 5.3 4.9 108 5.5 6.3 87
TWO OCEAN PLATEAU 9360 6.3 6.5 97 5.7 7.1 80
WILLOW CREEK 8450 3.7 4.6 80 8.2 7.1 115
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Basin wide percent of average 90 81
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.3 5.8 74 3.6 4.1 88
BLACK BEAR 7950 7.9 6.6 120 8.0 8.0 100
CANYON 7940 2.1 2.1 100 2.7 3.6 75
FISHER CREEK 9100 6.2 6.8 91 6.2 7.3 85
MADISON PLATEAU 7750 -M 4.1 * 5.0 5.6 89
NORTHEAST ENTRANCE 7350 1.2 1.4 86 2.5 3.0 83
PARKER PEAK 9400 4.1 6.2 66 -M 4.2 *
SYLVAN LAKE 8420 5.2 5.4 96 6.8 5.3 128
THUMB DIVIDE 7980 3.5 2.6 135 3.9 4.8 81
TWO OCEAN PLATEAU 9360 6.3 6.5 97 5.7 7.1 80
WHISKEY CREEK 6800 2.5 2.7 93 3.6 4.6 78
WHITE MILL 8700 3.8 4.8 79 4.2 6.1 69
WOLVERINE 7650 1.4 1.7 82 2.7 3.4 79
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Basin wide percent of average 92 87
WIND RIVER
BURROUGHS CREEK 8750 2.7 2.8 96 3.3 4.1 80
COLD SPRINGS 9630 2.9 2.2 132 4.2 3.4 124
DEER PARK 9700 4.5 -M * 6.0 -M *
HOBBS PARK 10100 5.2 4.3 121 5.9 3.7 159
LITTLE WARM 9620 2.6 2.6 100 3.5 3.7 95
SOUTH PASS 9040 3.8 4.5 84 5.7 4.4 130
ST. LAWRENCE ALT 8620 2.6 1.6 162 5.0 3.2 156
TOGWOTEE PASS 9580 5.3 4.9 108 5.5 6.3 87
TOWNSEND CREEK 8700 3.4 2.2 155 5.9 3.3 179
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Basin wide percent of average 114 121
BIGHORN BASIN
BALD MTN. 9375 4.7 5.0 94 5.1 4.3 119
BEAR TRAP MEADOW 7900 1.7 1.7 100 4.9 2.7 181
BLACKWATER 9780 6.5 4.9 133 5.7 4.6 124
BONE SPRINGS DIV 9350 3.8 4.3 88 4.5 3.7 122
EVENING STAR 9200 4.2 7.3 58 5.6 5.6 100
GRAVE SPRINGS 8550 2.1 -M * 5.2 3.1 168
KIRWIN 9550 3.7 2.8 132 4.0 3.1 129
MARQUETTE 8760 3.9 2.0 195 4.9 3.0 163
MIDDLE POWDER 7760 1.9 3.0 63 8.0 3.5 229
OWL CREEK 8975 2.6 .9 289 3.5 1.7 206
POWDER RIVER PASS 9480 1.9 2.6 73 3.9 3.2 122
SHELL CREEK 9580 4.2 4.1 102 3.8 3.4 112
SYLVAN LAKE 8420 5.2 5.4 96 6.8 5.3 128
SYLVAN ROAD 8120 2.5 2.9 86 3.2 4.3 74
TIMBER CREEK 7950 2.6 .9 289 4.0 2.1 190
YOUNTS PEAK 8350 3.9 4.5 87 3.6 4.1 88
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Basin wide percent of average 102 133
SHOSHONE RIVER
BLACKWATER 9780 6.5 4.9 133 5.7 4.6 124
EVENING STAR 9200 4.2 7.3 58 5.6 5.6 100
KIRWIN 9550 3.7 2.8 132 4.0 3.1 129
MARQUETTE 8760 3.9 2.0 195 4.9 3.0 163
SYLVAN LAKE 8420 5.2 5.4 96 6.8 5.3 128
SYLVAN ROAD 8120 2.5 2.9 86 3.2 4.3 74
YOUNTS PEAK 8350 3.9 4.5 87 3.6 4.1 88
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Basin wide percent of average 100 113
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.7 1.7 100 4.9 2.7 181
BIG GOOSE 7990 1.6 -M * 4.6 -M *
BONE SPRINGS DIV 9350 3.8 4.3 88 4.5 3.7 122
BURGESS JUNCTION 7880 1.9 3.0 63 4.2 3.3 127
CLOUD PEAK RESERVOIR 9860 3.2 2.7 119 5.2 3.6 144
DOME LAKE 8880 2.1 3.4 62 3.6 4.0 90
GRAVE SPRINGS 8550 2.1 -M * 5.2 3.1 168
HANSEN SAWMILL 8760 1.5 1.7 88 3.2 2.6 123
MIDDLE POWDER 7760 1.9 3.0 63 8.0 3.5 229
POWDER RIVER PASS 9480 1.9 2.6 73 3.9 3.2 122
SUCKER CREEK 8880 3.0 2.3 130 5.0 3.6 139
TIE CREEK 6870 .8 -M * 3.3 3.1 106
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Basin wide percent of average 85 140
BELLE FOURCHE
BLIND PARK 6890 1.1 2.8 39 7.5 2.8 268
NORTH RAPID CREEK 6130 1.1 -M * 7.7 -M *
WARREN PEAK 6520 1.3 2.8 46 7.6 2.3 330
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Basin wide percent of average 43 296
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.2 3.9 82 6.3 5.1 124
DIVIDE PEAK 8800 4.0 4.6 87 9.7 5.6 173
ELK RIVER 8700 1.9 2.5 76 7.9 4.3 184
JOE WRIGHT 10120 4.4 5.7 77 9.0 6.5 138
NORTH FRENCH CREEK 10100 8.2 5.5 149 10.5 5.0 210
OLD BATTLE 10000 6.9 7.2 96 10.6 7.1 149
SOUTH BRUSH CREEK 8400 3.6 1.9 189 8.6 4.3 200
TOWER 10500 10.7 11.5 93 11.3 8.1 140
WEBBER SPRINGS 9200 3.7 5.5 67 7.7 6.9 112
WILLOW CREEK PASS 9540 3.8 2.6 146 5.2 3.3 158
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Basin wide percent of average 99 154
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.2 5.5 76 6.3 4.4 143
CASPER MTN. 7900 2.9 3.6 81 8.6 4.4 195
DEADMAN HILL 10220 5.4 3.5 154 6.2 4.3 144
DEER PARK 9700 4.5 -M * 6.0 -M *
LAPRELE CREEK 8320 .5 2.2 23 6.2 2.8 221
RENO HILL 8400 4.5 3.3 136 8.7 5.4 161
ROACH 9700 3.3 3.7 89 5.7 5.2 110
SAND LAKE 10080 9.3 7.3 127 10.7 5.0 214
SOUTH PASS 9040 3.8 4.5 84 5.7 4.4 130
WINDY PEAK 7840 .9 1.7 53 6.5 2.3 283
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Basin wide percent of average 99 169
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.3 1.9 68 6.3 3.8 166
DIVIDE PEAK 8800 4.0 4.6 87 9.7 5.6 173
OLD BATTLE 10000 6.9 7.2 96 10.6 7.1 149
SANDSTONE RS 8150 1.4 2.4 58 7.2 4.2 171
WHISKEY PARK 8950 4.4 5.6 79 9.6 4.9 196
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Basin wide percent of average 83 170
UPPER GREEN RIVER
BIG SANDY OPENING 9100 3.3 2.4 138 3.6 3.8 95
BLIND BULL SUM 8650 3.2 5.9 54 4.1 5.0 82
EAST RIM DIVIDE 7930 1.4 1.4 100* 2.3 3.5 66
ELKHART PARK G.S. 9400 2.8 2.4 117 3.5 3.8 92
GROS VENTRE SUMMIT 8775 2.9 2.9 100 3.5 3.8 92
KENDALL R.S. 7740 1.7 1.8 94 2.5 3.6 69
LOOMIS PARK 8240 1.6 2.5 64 2.9 4.4 66
NEW FORK LAKE 8340 1.5 1.4 107 2.5 3.4 74
SNIDER BASIN 8250 1.1 2.0 55 2.2 3.5 63
SPRING CREEK DIVIDE 9000 2.7 4.7 57 4.2 5.9 71
TRIPLE PEAK 8500 2.9 4.1 71 4.4 7.1 62
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Basin wide percent of average 80 75
LOWER GREEN RIVER
HAMS FORK 7840 .9 1.1 82* 2.6 3.1 84
HEWINTA 9500 1.0 1.7 59 4.0 3.8 105
HICKERSON PARK 9150 1.5 1.4 107 4.1 3.2 128
HOLE-IN-ROCK 9150 1.0 1.1 91 4.6 3.2 144
INDIAN CREEK 9425 3.5 4.8 73 4.1 5.8 71
KELLEY R.S. 8180 1.8 2.4 75 3.3 4.4 75
STEEL CREEK PARK 10100 3.2 4.0 80 5.3 3.9 136
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Basin wide percent of average 78 102
UPPER BEAR RIVER
BUG LAKE 7950 1.2 3.5 34 3.6 5.5 65
HAYDEN FORK 9400 2.2 2.8 79 5.1 4.6 111
KELLEY R.S. 8180 1.8 2.4 75 3.3 4.4 75
LILY LAKE 9050 2.7 2.6 104 5.4 4.3 126
MONTE CRISTO 8960 3.2 4.4 73 5.7 6.6 86
SALT RIVER SUMMIT 7600 1.1 1.5 73 3.3 3.9 85
TRIAL LAKE 9960 3.1 4.8 65 4.6 5.9 78
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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.