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 9 , 1997
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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 .6 1.5 40* 2.8 3.2 88
COTTONWOOD CREEK 7600 1.3 1.7 76* 3.2 3.5 91
GRANITE CREEK 6770 .2 1.4 14* 2.3 3.5 66
GRASSY LAKE 7265 2.2 2.5 88* 3.9 5.2 75
GROS VENTRE SUMMIT 8775 -M 1.8 * -M 2.4 *
LEWIS LAKE DIVIDE 7860 2.2 2.8 79* 3.7 5.3 70
PHILLIPS BENCH 8200 1.5 2.2 68* 2.5 4.1 61
SALT RIVER SUMMIT 7600 .5 .6 83* 2.4 2.6 92
SNAKE RIVER STATION 6920 -M 1.5 * -M 3.6 *
SPRING CREEK DIVIDE 9000 1.5 2.7 56* 2.4 3.5 69
THUMB DIVIDE 7980 -M 1.3 * -M 3.0 *
TOGWOTEE PASS 9580 3.3 3.3 100 3.2 3.9 82
TWO OCEAN PLATEAU 9360 5.0 4.6 109 5.0 4.4 114
WILLOW CREEK 8450 1.2 2.5 48* 4.3 4.5 96
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Basin wide percent of average 76* 82
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.2 4.1 102 3.4 2.8 121
BLACK BEAR 7950 3.8 4.2 90 4.6 5.2 88
CANYON 7940 1.8 1.3 138* 3.3 2.5 132
FISHER CREEK 9100 5.6 4.1 137 5.3 4.7 113
MADISON PLATEAU 7750 1.9 2.4 79* 3.3 3.7 89
NORTHEAST ENTRANCE 7350 .2 .7 29* 3.7 2.1 176
PARKER PEAK 9400 3.7 4.7 79 3.7 2.9 128
SYLVAN LAKE 8420 3.0 3.6 83 4.9 3.6 136
THUMB DIVIDE 7980 -M 1.3 * -M 3.0 *
TWO OCEAN PLATEAU 9360 5.0 4.6 109 5.0 4.4 114
WHISKEY CREEK 6800 1.1 1.4 79* 2.6 3.1 84
WHITE MILL 8700 5.1 2.9 176 5.4 4.0 135
WOLVERINE 7650 .1 .8 12* 2.7 2.3 117
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Basin wide percent of average 102 116
WIND RIVER
BURROUGHS CREEK 8750 2.1 1.6 131 2.6 2.5 104
COLD SPRINGS 9630 2.0 1.4 143 2.7 2.5 108
DEER PARK 9700 .0 -M * .0 -M *
HOBBS PARK 10100 3.0 3.0 100 3.2 2.6 123
LITTLE WARM 9620 1.4 1.6 88 2.8 2.5 112
SOUTH PASS 9040 2.7 3.3 82 3.8 3.0 127
ST. LAWRENCE ALT 8620 2.3 1.1 209 2.9 2.3 126
TOGWOTEE PASS 9580 3.3 3.3 100 3.2 3.9 82
TOWNSEND CREEK 8700 2.1 1.5 140 3.4 2.4 142
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Basin wide percent of average 113 113
BIGHORN BASIN
BALD MTN. 9375 4.8 3.5 137 4.5 3.0 150
BEAR TRAP MEADOW 7900 .8 1.1 73 1.4 2.0 70
BLACKWATER 9780 -M 3.5 * 3.7 3.3 112
BONE SPRINGS DIV 9350 4.1 3.3 124 4.6 2.8 164
EVENING STAR 9200 4.4 5.2 85 5.9 3.9 151
GRAVE SPRINGS 8550 1.3 -M * 2.3 2.4 96
KIRWIN 9550 2.6 2.0 130 3.0 2.2 136
MARQUETTE 8760 3.7 1.3 285 4.2 2.3 183
MIDDLE POWDER 7760 .9 2.0 45 2.0 2.6 77
OWL CREEK 8975 1.6 .7 229 1.9 1.3 146
POWDER RIVER PASS 9480 1.5 1.8 83 2.3 2.4 96
SHELL CREEK 9580 3.6 3.1 116 2.7 2.5 108
SYLVAN LAKE 8420 3.0 3.6 83 4.9 3.6 136
SYLVAN ROAD 8120 .7 2.1 33 3.6 3.0 120
TIMBER CREEK 7950 2.4 .5 480* 3.2 1.6 200
YOUNTS PEAK 8350 3.2 3.2 100 3.0 2.7 111
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Basin wide percent of average 112 128
SHOSHONE RIVER
BLACKWATER 9780 -M 3.5 * 3.7 3.3 112
EVENING STAR 9200 4.4 5.2 85 5.9 3.9 151
KIRWIN 9550 2.6 2.0 130 3.0 2.2 136
MARQUETTE 8760 3.7 1.3 285 4.2 2.3 183
SYLVAN LAKE 8420 3.0 3.6 83 4.9 3.6 136
SYLVAN ROAD 8120 .7 2.1 33 3.6 3.0 120
YOUNTS PEAK 8350 3.2 3.2 100 3.0 2.7 111
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Basin wide percent of average 101 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .8 1.1 73 1.4 2.0 70
BONE SPRINGS DIV 9350 4.1 3.3 124 4.6 2.8 164
BURGESS JUNCTION 7880 1.5 2.2 68 3.1 2.5 124
CLOUD PEAK RESERVOIR 9860 2.0 1.8 111 4.0 2.7 148
DOME LAKE 8880 2.7 2.5 108 4.0 2.9 138
GRAVE SPRINGS 8550 1.3 -M * 2.3 2.4 96
HANSEN SAWMILL 8760 1.3 1.1 118 2.4 2.0 120
MIDDLE POWDER 7760 .9 2.0 45 2.0 2.6 77
POWDER RIVER PASS 9480 1.5 1.8 83 2.3 2.4 96
SUCKER CREEK 8880 2.5 1.6 156 3.9 2.7 144
TIE CREEK 6870 1.2 -M * 3.8 2.4 158
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Basin wide percent of average 99 123
BELLE FOURCHE
BLIND PARK 6890 1.4 2.1 67 3.1 2.2 141
NORTH RAPID CREEK 6130 1.1 -M * 2.0 -M *
WARREN PEAK 6520 .8 2.1 38 2.6 1.7 153
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Basin wide percent of average 52 146
UPPER N. PLATTE RIVER
COLUMBINE 9400 1.5 2.5 60* 4.2 3.5 120
DIVIDE PEAK 8800 2.4 3.1 77 3.5 4.1 85
ELK RIVER 8700 .5 1.1 45* 3.2 3.0 107
JOE WRIGHT 10120 3.6 4.2 86 5.0 4.6 109
NORTH FRENCH CREEK 10100 2.8 3.6 78 4.1 3.3 124
OLD BATTLE 10000 3.4 5.0 68 5.2 4.7 111
SOUTH BRUSH CREEK 8400 .6 1.0 60* 2.0 3.1 65
TOWER 10500 5.7 8.2 70 5.9 5.6 105
WEBBER SPRINGS 9200 1.6 3.3 48 4.3 4.5 96
WILLOW CREEK PASS 9540 1.9 1.6 119 2.7 2.4 113
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Basin wide percent of average 71 103
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.8 3.3 55 3.4 3.2 106
CASPER MTN. 7900 2.7 2.2 123 3.1 3.2 97
DEADMAN HILL 10220 3.8 2.2 173 3.4 3.1 110
DEER PARK 9700 .0 -M * .0 -M *
LAPRELE CREEK 8320 1.3 1.4 93 2.3 2.0 115
RENO HILL 8400 2.1 2.3 91 2.4 3.6 67
ROACH 9700 1.9 2.3 83 3.4 3.6 94
SAND LAKE 10080 4.3 4.8 90 5.0 3.5 143
SOUTH PASS 9040 2.7 3.3 82 3.8 3.0 127
WINDY PEAK 7840 .9 .8 112* 2.1 1.6 131
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Basin wide percent of average 95 108
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 1.0 10* 3.2 2.5 128
DIVIDE PEAK 8800 2.4 3.1 77 3.5 4.1 85
OLD BATTLE 10000 3.4 5.0 68 5.2 4.7 111
SANDSTONE RS 8150 .3 1.4 21* 3.2 2.6 123
WHISKEY PARK 8950 1.5 3.6 42 4.1 3.0 137
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Basin wide percent of average 55 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.8 1.4 129* 2.9 2.4 121
BLIND BULL SUM 8650 1.8 3.7 49 2.2 3.1 71
EAST RIM DIVIDE 7930 .8 1.0 80* .9 2.3 39
ELKHART PARK G.S. 9400 1.3 1.5 87 2.1 2.4 88
GROS VENTRE SUMMIT 8775 -M 1.8 * -M 2.4 *
KENDALL R.S. 7740 1.4 .7 200* 2.3 2.3 100
LOOMIS PARK 8240 1.1 1.2 92* 1.7 2.8 61
NEW FORK LAKE 8340 .7 .5 140* 1.6 2.1 76
SNIDER BASIN 8250 .1 .7 14* 1.2 2.3 52
SPRING CREEK DIVIDE 9000 1.5 2.7 56* 2.4 3.5 69
TRIPLE PEAK 8500 2.3 2.2 105* 2.7 4.5 60
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Basin wide percent of average 82* 72
LOWER GREEN RIVER
HAMS FORK 7840 .2 .4 50* 1.2 2.0 60
HEWINTA 9500 1.5 .8 188* 4.0 2.9 138
HICKERSON PARK 9150 3.1 .8 388 4.2 2.5 168
HOLE-IN-ROCK 9150 1.2 .5 240* 3.5 2.5 140
INDIAN CREEK 9425 2.0 2.9 69* 1.7 3.6 47
KELLEY R.S. 8180 .9 1.2 75* 1.6 2.8 57
STEEL CREEK PARK 10100 2.3 2.7 85 5.0 3.0 167
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Basin wide percent of average 120* 110
UPPER BEAR RIVER
BUG LAKE 7950 2.3 1.8 128* 3.1 4.2 74
HAYDEN FORK 9400 .5 1.6 31* 3.8 3.3 115
KELLEY R.S. 8180 .9 1.2 75* 1.6 2.8 57
LILY LAKE 9050 1.6 1.5 107 3.4 3.3 103
MONTE CRISTO 8960 2.1 2.3 91* 3.1 4.7 66
SALT RIVER SUMMIT 7600 .5 .6 83* 2.4 2.6 92
TRIAL LAKE 9960 1.6 3.0 53 2.7 4.0 68
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Basin wide percent of average 79* 81
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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.