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: MAY 17 , 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 12.8 4.2 305 39.0 26.6 147
COTTONWOOD CREEK 7600 20.1 12.4 162 39.8 29.7 134
GRANITE CREEK 6770 15.9 6.6 241 35.7 28.3 126
GRASSY LAKE 7265 32.5 25.4 128 61.6 44.2 139
GROS VENTRE SUMMIT 8775 15.9 8.9 179 23.2 19.1 121
LEWIS LAKE DIVIDE 7860 44.1 28.4 155 64.1 44.9 143
PHILLIPS BENCH 8200 -M 24.4 * -M 35.4 *
SALT RIVER SUMMIT 7600 5.7 .0 * 26.9 20.3 133
SNAKE RIVER STATION 6920 4.6 10.1 46 41.1 31.0 133
SPRING CREEK DIVIDE 9000 29.3 25.2 116 37.4 32.3 116
THUMB DIVIDE 7980 16.7 9.9 169 37.4 24.9 150
TOGWOTEE PASS 9580 30.0 25.7 117 40.0 33.7 119
TWO OCEAN PLATEAU 9360 43.4 25.9 168 -M 36.6 *
WILLOW CREEK 8450 33.6 26.8 125 53.6 38.2 140
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Basin wide percent of average 143 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 24.3 * 35.4 23.2 153
BLACK BEAR 7950 -M 35.9 * -M 48.6 *
CANYON 7940 12.0 5.9 203 29.7 17.6 169
FISHER CREEK 9100 -M 36.7 * -M 44.7 *
MADISON PLATEAU 7750 29.4 17.6 167 46.4 31.7 146
NORTHEAST ENTRANCE 7350 1.1 2.3 48 23.4 15.2 154
PARKER PEAK 9400 32.4 22.2 146 -M 19.9 *
SYLVAN LAKE 8420 -M 19.8 * 37.4 24.4 153
THUMB DIVIDE 7980 16.7 9.9 169 37.4 24.9 150
TWO OCEAN PLATEAU 9360 43.4 25.9 168 -M 36.6 *
WHISKEY CREEK 6800 -M 8.5 * -M 26.3 *
WHITE MILL 8700 37.2 24.3 153 -M 34.7 *
WOLVERINE 7650 -M 2.6 * 19.1 16.7 114
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Basin wide percent of average 159 149
WIND RIVER
BURROUGHS CREEK 8750 16.9 6.3 268 29.1 21.0 139
CHRISTINA LAKE 9980 18.5 16.3 113 27.9 21.9 127
COLD SPRINGS 9630 -M 2.5 * 16.8 14.6 115
HOBBS PARK 10100 19.3 16.0 121 19.7 19.2 103
LITTLE WARM 9620 9.2 4.8 192 24.7 17.8 139
SOUTH PASS 9040 -M 15.7 * -M 22.4 *
ST. LAWRENCE ALT 8620 1.6 2.1 76 16.4 13.7 120
TOGWOTEE PASS 9580 30.0 25.7 117 40.0 33.7 119
TOWNSEND CREEK 8700 4.7 5.6 84 18.4 17.1 108
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Basin wide percent of average 130 121
BIGHORN BASIN
BALD MTN. 9375 22.5 23.7 95 23.0 23.1 100
BEAR TRAP MEADOW 7900 .1 1.2 8 13.2 12.3 107
BLACKWATER 9780 39.1 24.1 162 34.4 22.4 154
BONE SPRINGS DIV 9350 19.8 15.6 127 21.4 20.2 106
EVENING STAR 9200 39.5 29.7 133 46.7 28.0 167
GRAVE SPRINGS 8550 6.0 -M * 14.8 14.4 103
KIRWIN 9550 10.8 9.5 114 20.5 14.8 139
LOST CREEK 8080 17.5 12.7 138 20.6 17.0 121
MARQUETTE 8760 9.2 7.2 128 16.4 15.5 106
MIDDLE POWDER 7760 11.5 12.6 91 19.0 16.6 114
OWL CREEK 8975 .2 .9 22 9.6 9.4 102
POWDER RIVER PASS 9480 12.2 5.6 218 18.3 16.5 111
SHELL CREEK 9580 16.3 16.3 100 19.7 17.9 110
SYLVAN LAKE 8420 -M 19.8 * 37.4 24.4 153
SYLVAN ROAD 8120 3.1 3.6 86 30.4 20.3 150
TIMBER CREEK 7950 .2 2.2 9 11.5 12.0 96
YOUNTS PEAK 8350 20.9 15.0 139 -M 20.8 *
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Basin wide percent of average 124 125
SHOSHONE RIVER
BLACKWATER 9780 39.1 24.1 162 34.4 22.4 154
EVENING STAR 9200 39.5 29.7 133 46.7 28.0 167
KIRWIN 9550 10.8 9.5 114 20.5 14.8 139
MARQUETTE 8760 9.2 7.2 128 16.4 15.5 106
SYLVAN LAKE 8420 -M 19.8 * 37.4 24.4 153
SYLVAN ROAD 8120 3.1 3.6 86 30.4 20.3 150
YOUNTS PEAK 8350 20.9 15.0 139 -M 20.8 *
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Basin wide percent of average 138 148
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 1.2 8 13.2 12.3 107
BONE SPRINGS DIV 9350 19.8 15.6 127 21.4 20.2 106
BURGESS JUNCTION 7880 11.7 10.1 116 18.1 16.1 112
CLOUD PEAK RESERVOIR 9860 18.8 15.2 124 20.9 19.3 108
DOME LAKE 8880 10.6 9.5 112 19.8 18.4 108
GRAVE SPRINGS 8550 6.0 -M * 14.8 14.4 103
HANSEN SAWMILL 8760 -M 3.6 * -M 11.7 *
LOST CREEK 8080 17.5 12.7 138 20.6 17.0 121
MIDDLE POWDER 7760 11.5 12.6 91 19.0 16.6 114
POWDER RIVER PASS 9480 12.2 5.6 218 18.3 16.5 111
SUCKER CREEK 8880 14.9 9.7 154 22.0 18.6 118
TIE CREEK 6870 .2 -M * 17.9 15.5 115
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Basin wide percent of average 127 111
BELLE FOURCHE
BLIND PARK 6890 .0 4.1 0 19.9 16.1 124
NORTH RAPID CREEK 6130 .1 -M * 18.6 -M *
WARREN PEAK 6520 9.9 4.1 241 -M 11.8 *
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Basin wide percent of average 121 124*
UPPER N. PLATTE RIVER
COLUMBINE 9400 13.3 12.8 104 38.6 29.5 131
DIVIDE PEAK 8800 14.3 11.4 125 29.7 29.1 102
ELK RIVER 8700 11.4 7.5 152 30.8 23.3 132
JOE WRIGHT 10120 31.4 22.9 137 37.9 32.7 116
NORTH FRENCH CREEK 10100 33.8 25.9 131 36.6 30.2 121
OLD BATTLE 10000 44.5 35.4 126 46.7 37.7 124
SOUTH BRUSH CREEK 8400 .0 5.3 0 21.8 22.0 99
TOWER 10500 -M 50.0 * -M 46.4 *
WEBBER SPRINGS 9200 25.4 19.3 132 42.7 32.2 133
WILLOW CREEK PASS 9540 -M 9.7 * -M 16.9 *
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Basin wide percent of average 124 120
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 30.0 23.5 128 35.0 25.5 137
CASPER MTN. 7900 16.7 10.3 162 27.5 20.9 132
CHRISTINA LAKE 9980 18.5 16.3 113 27.9 21.9 127
DEADMAN HILL 10220 19.1 17.6 109 24.8 22.9 108
LAPRELE CREEK 8320 .0 3.1 0 18.6 16.5 113
RENO HILL 8400 16.0 7.9 203 26.9 23.4 115
ROACH 9700 19.9 15.0 133 28.1 28.1 100
SAND LAKE 10080 43.9 34.1 129 36.8 26.7 138
SOUTH PASS 9040 -M 15.7 * -M 22.4 *
WINDY PEAK 7840 .2 3.1 6 14.5 14.0 104
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Basin wide percent of average 126 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * -M 19.7 *
DIVIDE PEAK 8800 14.3 11.4 125 29.7 29.1 102
OLD BATTLE 10000 44.5 35.4 126 46.7 37.7 124
SANDSTONE RS 8150 .0 2.0 0 26.3 24.5 107
WHISKEY PARK 8950 35.2 23.7 149 41.2 36.2 114
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Basin wide percent of average 130 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 6.6 8.6 77 19.9 19.6 102
BLIND BULL SUM 8650 46.1 21.7 212 37.1 28.2 132
EAST RIM DIVIDE 7930 9.0 12.0 75 18.7 18.3 102
ELKHART PARK G.S. 9400 10.1 9.2 110 21.2 19.2 110
GROS VENTRE SUMMIT 8775 15.9 8.9 179 23.2 19.1 121
KENDALL R.S. 7740 6.9 .0 * 25.1 18.7 134
LOOMIS PARK 8240 -M 10.0 * 29.9 22.6 132
NEW FORK LAKE 8340 .7 5.5 13 16.3 17.4 94
SNIDER BASIN 8250 8.8 7.5 117 21.8 18.2 120
SPRING CREEK DIVIDE 9000 29.3 25.2 116 37.4 32.3 116
TRIPLE PEAK 8500 23.0 20.4 113 44.0 37.0 119
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Basin wide percent of average 126 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.1 16.1 119
HEWINTA 9500 .0 .0 100* 17.1 17.7 97
HICKERSON PARK 9150 .0 .5 0* 12.5 13.8 91
HOLE-IN-ROCK 9150 .1 .5 20* 12.9 13.8 93
INDIAN CREEK 9425 33.0 24.0 138 37.1 30.8 120
KELLEY R.S. 8180 10.3 8.8 117 35.2 22.6 156
STEEL CREEK PARK 10100 15.4 16.1 96 19.9 18.0 111
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Basin wide percent of average 118* 116
UPPER BEAR RIVER
BUG LAKE 7950 20.8 9.2 226 34.2 23.8 144
HAYDEN FORK 9400 2.0 .6 333* 29.9 24.7 121
KELLEY R.S. 8180 10.3 8.8 117 35.2 22.6 156
LILY LAKE 9050 .3 5.1 6 23.8 19.6 121
MONTE CRISTO 8960 29.5 20.5 144 39.3 32.1 122
SALT RIVER SUMMIT 7600 5.7 .0 * 26.9 20.3 133
TRIAL LAKE 9960 26.8 19.9 135 38.9 30.1 129
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Basin wide percent of average 140 132
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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.