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 WEDNESDAY: MAY 14 , 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 16.0 5.2 308 39.1 26.3 149
COTTONWOOD CREEK 7600 23.9 14.4 166 39.7 29.4 135
GRANITE CREEK 6770 18.6 7.7 242 35.7 28.1 127
GRASSY LAKE 7265 37.3 27.7 135 61.3 43.7 140
GROS VENTRE SUMMIT 8775 17.9 10.4 172 23.2 18.9 123
LEWIS LAKE DIVIDE 7860 48.4 29.9 162 63.8 44.5 143
PHILLIPS BENCH 8200 38.0 25.6 148 51.0 35.1 145
SALT RIVER SUMMIT 7600 9.9 .8 1238* 26.7 20.1 133
SNAKE RIVER STATION 6920 9.7 11.9 82 40.9 30.7 133
SPRING CREEK DIVIDE 9000 31.5 26.3 120 37.4 32.1 117
THUMB DIVIDE 7980 19.6 11.5 170 37.1 24.6 151
TOGWOTEE PASS 9580 34.9 26.2 133 39.9 33.3 120
TWO OCEAN PLATEAU 9360 44.9 26.4 170 -M 36.3 *
WILLOW CREEK 8450 37.5 28.1 133 53.5 37.8 142
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Basin wide percent of average 154 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.0 * 35.3 22.8 155
BLACK BEAR 7950 -M 37.2 * -M 48.2 *
CANYON 7940 14.6 6.8 215 29.6 17.4 170
FISHER CREEK 9100 54.4 37.5 145 -M 44.2 *
MADISON PLATEAU 7750 32.7 19.2 170 46.2 31.3 148
NORTHEAST ENTRANCE 7350 -M 2.8 * 23.3 15.0 155
PARKER PEAK 9400 35.1 22.8 154 -M 19.6 *
SYLVAN LAKE 8420 -M 20.8 * 37.2 24.0 155
THUMB DIVIDE 7980 19.6 11.5 170 37.1 24.6 151
TWO OCEAN PLATEAU 9360 44.9 26.4 170 -M 36.3 *
WHISKEY CREEK 6800 16.5 9.9 167 35.2 26.0 135
WHITE MILL 8700 39.3 25.0 157 -M 34.3 *
WOLVERINE 7650 3.1 3.4 91 19.0 16.4 116
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Basin wide percent of average 160 148
WIND RIVER
BURROUGHS CREEK 8750 19.1 7.3 262 29.0 20.7 140
CHRISTINA LAKE 9980 20.3 17.2 118 27.8 21.5 129
COLD SPRINGS 9630 3.3 3.1 106 16.7 14.4 116
HOBBS PARK 10100 20.5 17.0 121 19.6 18.8 104
LITTLE WARM 9620 12.2 5.8 210 24.5 17.6 139
SOUTH PASS 9040 22.2 16.6 134 30.2 22.0 137
ST. LAWRENCE ALT 8620 5.1 2.6 196 16.4 13.5 121
TOGWOTEE PASS 9580 34.9 26.2 133 39.9 33.3 120
TOWNSEND CREEK 8700 7.9 6.3 125 18.4 16.8 110
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Basin wide percent of average 143 125
BIGHORN BASIN
BALD MTN. 9375 24.8 24.4 102 23.0 22.7 101
BEAR TRAP MEADOW 7900 -M 1.6 * 13.2 12.0 110
BLACKWATER 9780 41.0 24.9 165 34.3 22.0 156
BONE SPRINGS DIV 9350 21.1 16.7 126 21.4 19.8 108
EVENING STAR 9200 42.2 30.3 139 46.7 27.6 169
GRAVE SPRINGS 8550 8.9 -M * 14.8 14.0 106
KIRWIN 9550 13.5 10.2 132 20.4 14.5 141
LOST CREEK 8080 19.6 13.8 142 20.5 16.6 123
MARQUETTE 8760 10.8 7.7 140 16.3 15.1 108
MIDDLE POWDER 7760 14.3 14.1 101 19.0 16.2 117
OWL CREEK 8975 -M 1.2 * 9.6 9.2 104
POWDER RIVER PASS 9480 13.8 6.5 212 18.0 16.2 111
SHELL CREEK 9580 18.9 17.0 111 19.4 17.5 111
SYLVAN LAKE 8420 -M 20.8 * 37.2 24.0 155
SYLVAN ROAD 8120 6.6 4.3 153 30.4 19.9 153
TIMBER CREEK 7950 -M 2.8 * 11.5 11.6 99
YOUNTS PEAK 8350 22.4 16.0 140 -M 20.6 *
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Basin wide percent of average 134 128
SHOSHONE RIVER
BLACKWATER 9780 41.0 24.9 165 34.3 22.0 156
EVENING STAR 9200 42.2 30.3 139 46.7 27.6 169
KIRWIN 9550 13.5 10.2 132 20.4 14.5 141
MARQUETTE 8760 10.8 7.7 140 16.3 15.1 108
SYLVAN LAKE 8420 -M 20.8 * 37.2 24.0 155
SYLVAN ROAD 8120 6.6 4.3 153 30.4 19.9 153
YOUNTS PEAK 8350 22.4 16.0 140 -M 20.6 *
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Basin wide percent of average 146 151
POWDER-TONGUE
BEAR TRAP MEADOW 7900 -M 1.6 * 13.2 12.0 110
BONE SPRINGS DIV 9350 21.1 16.7 126 21.4 19.8 108
BURGESS JUNCTION 7880 13.7 11.3 121 17.9 15.8 113
CLOUD PEAK RESERVOIR 9860 21.0 16.2 130 20.9 18.9 111
DOME LAKE 8880 13.1 10.6 124 19.8 18.0 110
GRAVE SPRINGS 8550 8.9 -M * 14.8 14.0 106
HANSEN SAWMILL 8760 -M 4.2 * 12.2 11.4 107
LOST CREEK 8080 19.6 13.8 142 20.5 16.6 123
MIDDLE POWDER 7760 14.3 14.1 101 19.0 16.2 117
POWDER RIVER PASS 9480 13.8 6.5 212 18.0 16.2 111
SUCKER CREEK 8880 17.3 10.7 162 21.8 18.2 120
TIE CREEK 6870 1.5 -M * 17.9 15.1 119
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Basin wide percent of average 134 113
BELLE FOURCHE
BLIND PARK 6890 .0 5.0 0 19.8 15.6 127
NORTH RAPID CREEK 6130 2.9 -M * 18.5 -M *
WARREN PEAK 6520 13.5 5.0 270 -M 11.6 *
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Basin wide percent of average 135 127*
UPPER N. PLATTE RIVER
COLUMBINE 9400 17.9 14.7 122 38.5 29.3 131
DIVIDE PEAK 8800 18.1 13.0 139 29.5 28.8 102
ELK RIVER 8700 15.5 9.1 170 30.9 23.1 134
JOE WRIGHT 10120 32.3 23.8 136 37.6 32.2 117
NORTH FRENCH CREEK 10100 36.1 26.9 134 36.4 29.8 122
OLD BATTLE 10000 45.5 37.0 123 46.5 37.3 125
SOUTH BRUSH CREEK 8400 1.4 6.2 23 21.8 21.7 100
TOWER 10500 68.1 50.8 134 59.7 45.8 130
WEBBER SPRINGS 9200 27.2 20.9 130 42.5 31.9 133
WILLOW CREEK PASS 9540 20.1 10.9 184 20.3 16.6 122
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Basin wide percent of average 132 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 33.3 25.2 132 34.9 25.2 138
CASPER MTN. 7900 19.9 11.7 170 27.5 20.5 134
CHRISTINA LAKE 9980 20.3 17.2 118 27.8 21.5 129
DEADMAN HILL 10220 20.6 18.6 111 24.6 22.6 109
LAPRELE CREEK 8320 3.8 3.6 106 18.3 16.1 114
RENO HILL 8400 18.8 8.9 211 26.8 23.2 116
ROACH 9700 22.6 16.2 140 27.8 27.6 101
SAND LAKE 10080 44.9 35.5 126 36.8 26.3 140
SOUTH PASS 9040 22.2 16.6 134 30.2 22.0 137
WINDY PEAK 7840 .2 3.8 5 14.3 13.7 104
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Basin wide percent of average 131 123
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .3 100* -M 19.5 *
DIVIDE PEAK 8800 18.1 13.0 139 29.5 28.8 102
OLD BATTLE 10000 45.5 37.0 123 46.5 37.3 125
SANDSTONE RS 8150 .8 2.8 29 26.3 24.3 108
WHISKEY PARK 8950 39.2 25.6 153 41.1 35.8 115
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Basin wide percent of average 132 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 9.6 10.1 95 19.8 19.4 102
BLIND BULL SUM 8650 44.1 22.4 197 37.0 28.0 132
EAST RIM DIVIDE 7930 11.4 12.9 88 18.7 18.1 103
ELKHART PARK G.S. 9400 12.5 10.1 124 21.0 19.0 111
GROS VENTRE SUMMIT 8775 17.9 10.4 172 23.2 18.9 123
KENDALL R.S. 7740 10.1 .8 1262* 25.0 18.5 135
LOOMIS PARK 8240 -M 11.6 * 29.8 22.4 133
NEW FORK LAKE 8340 3.9 6.4 61 15.9 17.2 92
SNIDER BASIN 8250 12.4 8.8 141 21.8 18.0 121
SPRING CREEK DIVIDE 9000 31.5 26.3 120 37.4 32.1 117
TRIPLE PEAK 8500 26.5 21.5 123 43.9 36.6 120
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Basin wide percent of average 139 118
LOWER GREEN RIVER
HAMS FORK 7840 1.9 .4 475* 19.0 15.9 119
HEWINTA 9500 .0 .4 0* 17.1 17.4 98
HICKERSON PARK 9150 .0 .8 0 12.5 13.5 93
HOLE-IN-ROCK 9150 .1 .6 17* 12.8 13.5 95
INDIAN CREEK 9425 36.7 25.2 146 37.1 30.5 122
KELLEY R.S. 8180 13.9 10.4 134 35.3 22.3 158
STEEL CREEK PARK 10100 17.9 16.8 107 19.9 17.7 112
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Basin wide percent of average 129 118
UPPER BEAR RIVER
BUG LAKE 7950 24.6 10.5 234 34.3 23.6 145
HAYDEN FORK 9400 5.7 1.1 518* 29.9 24.3 123
KELLEY R.S. 8180 13.9 10.4 134 35.3 22.3 158
LILY LAKE 9050 3.3 5.9 56 23.7 19.3 123
MONTE CRISTO 8960 33.8 22.2 152 39.3 31.7 124
SALT RIVER SUMMIT 7600 9.9 .8 1238* 26.7 20.1 133
TRIAL LAKE 9960 30.1 21.2 142 38.9 29.7 131
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Basin wide percent of average 168 133
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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.