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 FRIDAY: MAY 16 , 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 13.9 4.5 309 39.0 26.5 147
COTTONWOOD CREEK 7600 21.1 13.2 160 39.8 29.6 134
GRANITE CREEK 6770 16.7 7.0 239 35.7 28.3 126
GRASSY LAKE 7265 33.8 26.3 129 61.3 44.0 139
GROS VENTRE SUMMIT 8775 16.9 9.5 178 23.2 19.1 121
LEWIS LAKE DIVIDE 7860 45.4 29.0 157 63.9 44.8 143
PHILLIPS BENCH 8200 36.4 24.8 147 51.0 35.3 144
SALT RIVER SUMMIT 7600 6.9 .0 * 26.7 20.3 132
SNAKE RIVER STATION 6920 6.3 10.8 58 40.9 30.9 132
SPRING CREEK DIVIDE 9000 30.1 25.6 118 37.4 32.3 116
THUMB DIVIDE 7980 17.7 10.5 169 37.1 24.8 150
TOGWOTEE PASS 9580 31.5 25.9 122 39.9 33.5 119
TWO OCEAN PLATEAU 9360 43.9 26.1 168 -M 36.5 *
WILLOW CREEK 8450 34.9 27.3 128 53.5 38.0 141
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Basin wide percent of average 145 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 24.6 * 35.4 23.0 154
BLACK BEAR 7950 -M 36.4 * -M 48.5 *
CANYON 7940 12.7 6.2 205 29.6 17.6 168
FISHER CREEK 9100 53.7 37.1 145 -M 44.5 *
MADISON PLATEAU 7750 30.5 18.2 168 46.2 31.5 147
NORTHEAST ENTRANCE 7350 .7 2.5 28 23.3 15.2 153
PARKER PEAK 9400 33.0 22.5 147 -M 19.8 *
SYLVAN LAKE 8420 -M 20.2 * 37.2 24.2 154
THUMB DIVIDE 7980 17.7 10.5 169 37.1 24.8 150
TWO OCEAN PLATEAU 9360 43.9 26.1 168 -M 36.5 *
WHISKEY CREEK 6800 14.8 9.0 164 35.2 26.2 134
WHITE MILL 8700 37.7 24.6 153 -M 34.5 *
WOLVERINE 7650 -M 2.8 * 19.2 16.6 116
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Basin wide percent of average 156 147
WIND RIVER
BURROUGHS CREEK 8750 17.5 6.6 265 29.0 20.9 139
CHRISTINA LAKE 9980 19.0 16.7 114 27.8 21.7 128
COLD SPRINGS 9630 -M 2.7 * 16.7 14.6 114
HOBBS PARK 10100 19.9 16.5 121 19.7 19.0 104
LITTLE WARM 9620 10.2 5.1 200 24.6 17.8 138
SOUTH PASS 9040 20.4 16.1 127 30.3 22.2 136
ST. LAWRENCE ALT 8620 2.7 2.3 117 16.4 13.6 121
TOGWOTEE PASS 9580 31.5 25.9 122 39.9 33.5 119
TOWNSEND CREEK 8700 5.8 5.8 100 18.4 17.0 108
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Basin wide percent of average 134 124
BIGHORN BASIN
BALD MTN. 9375 23.6 24.1 98 23.0 23.0 100
BEAR TRAP MEADOW 7900 .1 1.3 8 13.2 12.2 108
BLACKWATER 9780 39.7 24.4 163 34.4 22.2 155
BONE SPRINGS DIV 9350 20.3 16.1 126 21.4 20.1 106
EVENING STAR 9200 40.2 30.0 134 46.7 27.8 168
GRAVE SPRINGS 8550 7.4 -M * 14.8 14.2 104
KIRWIN 9550 11.7 9.8 119 20.4 14.7 139
LOST CREEK 8080 18.1 13.1 138 20.6 16.8 123
MARQUETTE 8760 9.7 7.4 131 16.4 15.3 107
MIDDLE POWDER 7760 12.5 13.3 94 19.0 16.4 116
OWL CREEK 8975 .2 .9 22 9.6 9.4 102
POWDER RIVER PASS 9480 13.0 5.9 220 18.0 16.4 110
SHELL CREEK 9580 16.1 16.7 96 19.6 17.8 110
SYLVAN LAKE 8420 -M 20.2 * 37.2 24.2 154
SYLVAN ROAD 8120 -M 3.8 * 30.3 20.1 151
TIMBER CREEK 7950 .1 2.4 4 11.5 11.8 97
YOUNTS PEAK 8350 21.5 15.4 140 -M 20.8 *
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Basin wide percent of average 125 126
SHOSHONE RIVER
BLACKWATER 9780 39.7 24.4 163 34.4 22.2 155
EVENING STAR 9200 40.2 30.0 134 46.7 27.8 168
KIRWIN 9550 11.7 9.8 119 20.4 14.7 139
MARQUETTE 8760 9.7 7.4 131 16.4 15.3 107
SYLVAN LAKE 8420 -M 20.2 * 37.2 24.2 154
SYLVAN ROAD 8120 -M 3.8 * 30.3 20.1 151
YOUNTS PEAK 8350 21.5 15.4 140 -M 20.8 *
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Basin wide percent of average 141 149
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 1.3 8 13.2 12.2 108
BONE SPRINGS DIV 9350 20.3 16.1 126 21.4 20.1 106
BURGESS JUNCTION 7880 12.4 10.6 117 18.0 16.0 112
CLOUD PEAK RESERVOIR 9860 19.9 15.6 128 20.9 19.1 109
DOME LAKE 8880 11.6 9.9 117 19.8 18.2 109
GRAVE SPRINGS 8550 7.4 -M * 14.8 14.2 104
HANSEN SAWMILL 8760 .0 3.8 0 12.2 11.6 105
LOST CREEK 8080 18.1 13.1 138 20.6 16.8 123
MIDDLE POWDER 7760 12.5 13.3 94 19.0 16.4 116
POWDER RIVER PASS 9480 13.0 5.9 220 18.0 16.4 110
SUCKER CREEK 8880 15.7 10.1 155 21.9 18.4 119
TIE CREEK 6870 .2 -M * 17.9 15.3 117
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Basin wide percent of average 124 112
BELLE FOURCHE
BLIND PARK 6890 -M 4.3 * 19.8 15.9 125
NORTH RAPID CREEK 6130 .7 -M * 18.6 -M *
WARREN PEAK 6520 11.7 4.3 272 -M 11.8 *
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Basin wide percent of average 272* 125*
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.0 13.4 112 38.6 29.5 131
DIVIDE PEAK 8800 15.8 11.9 133 29.8 29.0 103
ELK RIVER 8700 12.9 8.0 161 30.8 23.3 132
JOE WRIGHT 10120 32.6 23.3 140 37.9 32.5 117
NORTH FRENCH CREEK 10100 34.9 26.3 133 36.5 30.1 121
OLD BATTLE 10000 44.8 36.1 124 46.6 37.6 124
SOUTH BRUSH CREEK 8400 .0 5.6 0 21.8 21.9 100
TOWER 10500 65.3 50.4 130 59.7 46.2 129
WEBBER SPRINGS 9200 26.2 19.9 132 42.6 32.1 133
WILLOW CREEK PASS 9540 19.0 10.2 186 20.5 16.8 122
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Basin wide percent of average 130 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 31.2 24.2 129 34.9 25.4 137
CASPER MTN. 7900 18.2 10.7 170 27.5 20.8 132
CHRISTINA LAKE 9980 19.0 16.7 114 27.8 21.7 128
DEADMAN HILL 10220 19.7 18.1 109 24.8 22.8 109
LAPRELE CREEK 8320 1.8 3.3 55 18.4 16.3 113
RENO HILL 8400 17.1 8.3 206 26.8 23.3 115
ROACH 9700 21.0 15.5 135 28.1 27.9 101
SAND LAKE 10080 44.7 34.8 128 36.8 26.5 139
SOUTH PASS 9040 20.4 16.1 127 30.3 22.2 136
WINDY PEAK 7840 .2 3.3 6 14.5 13.9 104
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Basin wide percent of average 128 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * -M 19.7 *
DIVIDE PEAK 8800 15.8 11.9 133 29.8 29.0 103
OLD BATTLE 10000 44.8 36.1 124 46.6 37.6 124
SANDSTONE RS 8150 .0 2.2 0 26.4 24.5 108
WHISKEY PARK 8950 36.7 24.5 150 41.1 36.1 114
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Basin wide percent of average 130 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.6 9.2 83 19.8 19.5 102
BLIND BULL SUM 8650 45.9 22.0 209 37.1 28.2 132
EAST RIM DIVIDE 7930 9.8 12.4 79 18.7 18.2 103
ELKHART PARK G.S. 9400 10.6 9.5 112 21.1 19.2 110
GROS VENTRE SUMMIT 8775 16.9 9.5 178 23.2 19.1 121
KENDALL R.S. 7740 8.0 .0 * 25.0 18.6 134
LOOMIS PARK 8240 -M 10.6 * 29.8 22.6 132
NEW FORK LAKE 8340 1.4 5.8 24 16.1 17.3 93
SNIDER BASIN 8250 10.0 8.0 125 21.8 18.2 120
SPRING CREEK DIVIDE 9000 30.1 25.6 118 37.4 32.3 116
TRIPLE PEAK 8500 24.1 20.8 116 43.9 36.8 119
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Basin wide percent of average 127 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.0 16.0 119
HEWINTA 9500 .0 .0 100* 17.1 17.6 97
HICKERSON PARK 9150 .0 .6 0* 12.4 13.7 91
HOLE-IN-ROCK 9150 .1 .5 20* 12.8 13.7 93
INDIAN CREEK 9425 34.1 24.5 139 37.1 30.7 121
KELLEY R.S. 8180 11.6 9.4 123 35.2 22.5 156
STEEL CREEK PARK 10100 16.1 16.3 99 19.9 17.9 111
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Basin wide percent of average 121* 116
UPPER BEAR RIVER
BUG LAKE 7950 22.1 9.6 230 34.2 23.7 144
HAYDEN FORK 9400 3.0 .7 429* 29.9 24.5 122
KELLEY R.S. 8180 11.6 9.4 123 35.2 22.5 156
LILY LAKE 9050 .7 5.4 13 23.8 19.5 122
MONTE CRISTO 8960 31.0 21.2 146 39.2 31.9 123
SALT RIVER SUMMIT 7600 6.9 .0 * 26.7 20.3 132
TRIAL LAKE 9960 27.7 20.5 135 38.9 29.9 130
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Basin wide percent of average 144 132
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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.