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 TUESDAY: MAY 13 , 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 16.9 5.6 302 39.0 26.2 149
COTTONWOOD CREEK 7600 25.3 14.9 170 39.7 29.3 135
GRANITE CREEK 6770 19.3 8.1 238 35.7 28.0 128
GRASSY LAKE 7265 38.3 28.2 136 61.3 43.6 141
GROS VENTRE SUMMIT 8775 18.7 10.6 176 23.2 18.9 123
LEWIS LAKE DIVIDE 7860 49.8 30.3 164 63.8 44.3 144
PHILLIPS BENCH 8200 38.6 25.9 149 51.0 35.0 146
SALT RIVER SUMMIT 7600 11.2 1.5 747 26.7 20.1 133
SNAKE RIVER STATION 6920 11.0 12.2 90 40.9 30.6 134
SPRING CREEK DIVIDE 9000 32.2 26.5 122 37.4 32.0 117
THUMB DIVIDE 7980 20.3 11.8 172 37.1 24.6 151
TOGWOTEE PASS 9580 36.0 26.3 137 39.9 33.2 120
TWO OCEAN PLATEAU 9360 45.2 26.5 171 -M 36.1 *
WILLOW CREEK 8450 38.7 28.4 136 53.5 37.7 142
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Basin wide percent of average 156 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.1 * 35.3 22.7 156
BLACK BEAR 7950 -M 37.4 * -M 48.1 *
CANYON 7940 15.6 7.1 220 29.6 17.3 171
FISHER CREEK 9100 55.3 37.6 147 -M 44.1 *
MADISON PLATEAU 7750 34.0 19.6 173 46.2 31.2 148
NORTHEAST ENTRANCE 7350 1.3 3.1 42 23.3 14.9 156
PARKER PEAK 9400 -M 22.8 * -M 19.5 *
SYLVAN LAKE 8420 -M 21.1 * 37.2 23.8 156
THUMB DIVIDE 7980 20.3 11.8 172 37.1 24.6 151
TWO OCEAN PLATEAU 9360 45.2 26.5 171 -M 36.1 *
WHISKEY CREEK 6800 17.3 10.3 168 35.2 25.9 136
WHITE MILL 8700 40.1 25.1 160 -M 34.1 *
WOLVERINE 7650 4.2 3.7 114 19.3 16.3 118
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Basin wide percent of average 161 149
WIND RIVER
BURROUGHS CREEK 8750 19.7 7.8 253 29.0 20.6 141
CHRISTINA LAKE 9980 20.8 17.2 121 27.8 21.4 130
COLD SPRINGS 9630 4.2 3.4 124 16.7 14.3 117
HOBBS PARK 10100 20.8 17.1 122 19.6 18.7 105
LITTLE WARM 9620 13.3 6.1 218 24.5 17.5 140
SOUTH PASS 9040 23.0 16.7 138 30.2 21.9 138
ST. LAWRENCE ALT 8620 6.3 2.8 225 16.4 13.4 122
TOGWOTEE PASS 9580 36.0 26.3 137 39.9 33.2 120
TOWNSEND CREEK 8700 8.8 6.6 133 18.4 16.7 110
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Basin wide percent of average 147 125
BIGHORN BASIN
BALD MTN. 9375 25.2 24.4 103 23.0 22.5 102
BEAR TRAP MEADOW 7900 -M 1.8 * 13.3 11.9 112
BLACKWATER 9780 41.5 24.9 167 34.4 21.9 157
BONE SPRINGS DIV 9350 21.3 16.9 126 21.4 19.7 109
EVENING STAR 9200 43.0 30.4 141 46.5 27.4 170
GRAVE SPRINGS 8550 9.7 -M * 14.8 13.9 106
KIRWIN 9550 14.1 10.3 137 20.4 14.4 142
LOST CREEK 8080 20.2 13.9 145 20.6 16.5 125
MARQUETTE 8760 11.4 7.7 148 16.3 15.0 109
MIDDLE POWDER 7760 15.4 14.1 109 19.0 16.1 118
OWL CREEK 8975 -M 1.3 * 9.7 9.1 107
POWDER RIVER PASS 9480 14.4 6.8 212 17.9 16.1 111
SHELL CREEK 9580 20.3 17.0 119 19.3 17.4 111
SYLVAN LAKE 8420 -M 21.1 * 37.2 23.8 156
SYLVAN ROAD 8120 7.6 4.6 165 30.3 19.8 153
TIMBER CREEK 7950 .6 3.0 20 11.5 11.5 100
YOUNTS PEAK 8350 22.9 16.2 141 -M 20.5 *
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Basin wide percent of average 136 128
SHOSHONE RIVER
BLACKWATER 9780 41.5 24.9 167 34.4 21.9 157
EVENING STAR 9200 43.0 30.4 141 46.5 27.4 170
KIRWIN 9550 14.1 10.3 137 20.4 14.4 142
MARQUETTE 8760 11.4 7.7 148 16.3 15.0 109
SYLVAN LAKE 8420 -M 21.1 * 37.2 23.8 156
SYLVAN ROAD 8120 7.6 4.6 165 30.3 19.8 153
YOUNTS PEAK 8350 22.9 16.2 141 -M 20.5 *
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Basin wide percent of average 149 151
POWDER-TONGUE
BEAR TRAP MEADOW 7900 -M 1.8 * 13.3 11.9 112
BONE SPRINGS DIV 9350 21.3 16.9 126 21.4 19.7 109
BURGESS JUNCTION 7880 14.2 11.4 125 18.0 15.7 115
CLOUD PEAK RESERVOIR 9860 21.5 16.3 132 20.9 18.7 112
DOME LAKE 8880 13.6 11.0 124 19.8 17.9 111
GRAVE SPRINGS 8550 9.7 -M * 14.8 13.9 106
HANSEN SAWMILL 8760 1.2 4.4 27 12.2 11.3 108
LOST CREEK 8080 20.2 13.9 145 20.6 16.5 125
MIDDLE POWDER 7760 15.4 14.1 109 19.0 16.1 118
POWDER RIVER PASS 9480 14.4 6.8 212 17.9 16.1 111
SUCKER CREEK 8880 17.9 11.0 163 21.9 18.0 122
TIE CREEK 6870 2.5 -M * 17.9 15.0 119
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Basin wide percent of average 132 114
BELLE FOURCHE
BLIND PARK 6890 .7 5.3 13 19.7 15.5 127
NORTH RAPID CREEK 6130 4.3 -M * 18.5 -M *
WARREN PEAK 6520 14.5 5.3 274 -M 11.5 *
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Basin wide percent of average 143 127*
UPPER N. PLATTE RIVER
COLUMBINE 9400 19.1 15.2 126 38.5 29.2 132
DIVIDE PEAK 8800 19.4 13.5 144 29.7 28.7 103
ELK RIVER 8700 16.6 9.6 173 30.9 23.0 134
JOE WRIGHT 10120 32.9 23.8 138 37.6 32.1 117
NORTH FRENCH CREEK 10100 37.0 27.1 137 36.3 29.7 122
OLD BATTLE 10000 46.1 37.1 124 46.5 37.2 125
SOUTH BRUSH CREEK 8400 2.5 6.6 38 21.8 21.6 101
TOWER 10500 29.9 50.8 59 59.7 45.6 131
WEBBER SPRINGS 9200 28.0 21.3 131 42.5 31.8 134
WILLOW CREEK PASS 9540 20.8 11.1 187 20.3 16.5 123
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Basin wide percent of average 117 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 34.7 25.5 136 34.9 25.1 139
CASPER MTN. 7900 20.9 12.1 173 27.5 20.4 135
CHRISTINA LAKE 9980 20.8 17.2 121 27.8 21.4 130
DEADMAN HILL 10220 21.3 18.7 114 24.6 22.5 109
LAPRELE CREEK 8320 5.1 3.8 134 18.3 16.0 114
RENO HILL 8400 19.5 9.3 210 26.9 23.1 116
ROACH 9700 23.6 16.3 145 27.8 27.5 101
SAND LAKE 10080 45.2 35.7 127 36.4 26.2 139
SOUTH PASS 9040 23.0 16.7 138 30.2 21.9 138
WINDY PEAK 7840 .2 4.1 5 14.5 13.6 107
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Basin wide percent of average 134 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .7 29* -M 19.4 *
DIVIDE PEAK 8800 19.4 13.5 144 29.7 28.7 103
OLD BATTLE 10000 46.1 37.1 124 46.5 37.2 125
SANDSTONE RS 8150 2.3 3.4 68 26.2 24.2 108
WHISKEY PARK 8950 40.5 25.9 156 41.1 35.7 115
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Basin wide percent of average 135 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.8 10.4 104 19.8 19.3 103
BLIND BULL SUM 8650 44.2 22.4 197 37.0 27.9 133
EAST RIM DIVIDE 7930 12.1 13.0 93 18.7 18.0 104
ELKHART PARK G.S. 9400 13.4 10.4 129 21.0 19.0 111
GROS VENTRE SUMMIT 8775 18.7 10.6 176 23.2 18.9 123
KENDALL R.S. 7740 11.0 1.5 733 25.0 18.4 136
LOOMIS PARK 8240 -M 11.8 * 29.8 22.3 134
NEW FORK LAKE 8340 4.9 6.6 74 15.8 17.1 92
SNIDER BASIN 8250 13.4 9.1 147 21.9 18.0 122
SPRING CREEK DIVIDE 9000 32.2 26.5 122 37.4 32.0 117
TRIPLE PEAK 8500 27.5 21.7 127 43.9 36.5 120
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Basin wide percent of average 142 119
LOWER GREEN RIVER
HAMS FORK 7840 3.1 .8 388* 18.9 15.9 119
HEWINTA 9500 .0 .8 0* 17.2 17.3 99
HICKERSON PARK 9150 .0 .9 0 12.5 13.4 93
HOLE-IN-ROCK 9150 .1 .8 12 12.8 13.4 96
INDIAN CREEK 9425 37.8 25.5 148 37.0 30.4 122
KELLEY R.S. 8180 14.9 10.7 139 35.2 22.3 158
STEEL CREEK PARK 10100 18.6 16.9 110 19.9 17.5 114
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Basin wide percent of average 132 118
UPPER BEAR RIVER
BUG LAKE 7950 25.3 10.9 232 34.3 23.5 146
HAYDEN FORK 9400 6.9 1.5 460* 29.9 24.2 124
KELLEY R.S. 8180 14.9 10.7 139 35.2 22.3 158
LILY LAKE 9050 4.7 6.1 77 23.7 19.2 123
MONTE CRISTO 8960 35.1 22.5 156 39.3 31.6 124
SALT RIVER SUMMIT 7600 11.2 1.5 747 26.7 20.1 133
TRIAL LAKE 9960 31.1 21.4 145 38.9 29.6 131
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Basin wide percent of average 173 134
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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.