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 THURSDAY: MAY 8 , 1997
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 22.3 7.8 286 39.1 25.8 152
COTTONWOOD CREEK 7600 30.8 17.0 181 39.6 28.9 137
GRANITE CREEK 6770 22.6 10.1 224 35.7 27.5 130
GRASSY LAKE 7265 46.2 30.6 151 61.3 42.9 143
GROS VENTRE SUMMIT 8775 21.7 12.0 181 23.2 18.6 125
LEWIS LAKE DIVIDE 7860 53.8 32.0 168 63.7 43.6 146
PHILLIPS BENCH 8200 42.9 27.4 157 51.0 34.4 148
SALT RIVER SUMMIT 7600 16.6 5.4 307 26.7 19.7 136
SNAKE RIVER STATION 6920 18.4 14.0 131 40.9 30.1 136
SPRING CREEK DIVIDE 9000 36.7 27.8 132 37.3 31.5 118
THUMB DIVIDE 7980 26.3 13.2 199 37.1 24.2 153
TOGWOTEE PASS 9580 38.3 27.2 141 39.8 32.7 122
TWO OCEAN PLATEAU 9360 48.6 27.0 180 -M 35.5 *
WILLOW CREEK 8450 43.8 29.9 146 53.4 37.1 144
----- -----
Basin wide percent of average 167 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 25.5 * 35.2 22.1 159
BLACK BEAR 7950 -M 38.4 * -M 47.4 *
CANYON 7940 19.8 8.7 228 29.6 16.9 175
FISHER CREEK 9100 60.5 38.1 159 -M 43.3 *
MADISON PLATEAU 7750 40.0 21.4 187 46.2 30.7 150
NORTHEAST ENTRANCE 7350 6.6 4.3 153 23.4 14.5 161
PARKER PEAK 9400 38.4 23.2 166 -M 18.9 *
SYLVAN LAKE 8420 31.3 22.2 141 37.2 23.2 160
THUMB DIVIDE 7980 26.3 13.2 199 37.1 24.2 153
TWO OCEAN PLATEAU 9360 48.6 27.0 180 -M 35.5 *
WHISKEY CREEK 6800 21.0 12.4 169 35.2 25.5 138
WHITE MILL 8700 43.2 25.6 169 -M 33.5 *
WOLVERINE 7650 10.1 5.6 180 19.0 15.9 119
----- -----
Basin wide percent of average 171 152
WIND RIVER
BURROUGHS CREEK 8750 22.4 9.9 226 28.9 20.1 144
CHRISTINA LAKE 9980 21.6 17.6 123 27.9 20.9 133
COLD SPRINGS 9630 7.8 4.8 163 16.6 13.8 120
HOBBS PARK 10100 21.7 17.5 124 19.6 18.1 108
LITTLE WARM 9620 17.6 7.9 223 24.4 17.0 144
SOUTH PASS 9040 26.1 17.3 151 30.1 21.4 141
ST. LAWRENCE ALT 8620 9.9 3.9 254 16.4 13.0 126
TOGWOTEE PASS 9580 38.3 27.2 141 39.8 32.7 122
TOWNSEND CREEK 8700 11.4 7.8 146 18.3 16.2 113
----- -----
Basin wide percent of average 155 128
BIGHORN BASIN
BALD MTN. 9375 26.4 24.3 109 22.9 21.8 105
BEAR TRAP MEADOW 7900 2.7 2.8 96 12.9 11.3 114
BLACKWATER 9780 43.1 25.3 170 34.1 21.4 159
BONE SPRINGS DIV 9350 21.7 17.5 124 21.4 19.0 113
EVENING STAR 9200 45.3 30.6 148 46.5 26.8 174
GRAVE SPRINGS 8550 12.0 -M * 14.7 13.3 111
KIRWIN 9550 16.9 10.9 155 20.2 14.0 144
LOST CREEK 8080 21.3 14.7 145 20.4 15.9 128
MARQUETTE 8760 14.1 8.1 174 16.2 14.4 112
MIDDLE POWDER 7760 17.6 14.4 122 18.8 15.6 121
OWL CREEK 8975 3.9 2.2 177 9.5 8.7 109
POWDER RIVER PASS 9480 -M 8.4 * 17.9 15.5 115
SHELL CREEK 9580 20.3 17.0 119 19.3 16.8 115
SYLVAN LAKE 8420 31.3 22.2 141 37.2 23.2 160
SYLVAN ROAD 8120 13.3 6.0 222 30.4 19.3 158
TIMBER CREEK 7950 5.2 4.2 124 11.6 10.9 106
YOUNTS PEAK 8350 24.1 17.1 141 -M 20.0 *
----- -----
Basin wide percent of average 141 132
SHOSHONE RIVER
BLACKWATER 9780 43.1 25.3 170 34.1 21.4 159
EVENING STAR 9200 45.3 30.6 148 46.5 26.8 174
KIRWIN 9550 16.9 10.9 155 20.2 14.0 144
MARQUETTE 8760 14.1 8.1 174 16.2 14.4 112
SYLVAN LAKE 8420 31.3 22.2 141 37.2 23.2 160
SYLVAN ROAD 8120 13.3 6.0 222 30.4 19.3 158
YOUNTS PEAK 8350 24.1 17.1 141 -M 20.0 *
----- -----
Basin wide percent of average 156 155
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.7 2.8 96 12.9 11.3 114
BONE SPRINGS DIV 9350 21.7 17.5 124 21.4 19.0 113
BURGESS JUNCTION 7880 16.2 12.3 132 17.8 15.1 118
CLOUD PEAK RESERVOIR 9860 22.8 16.9 135 20.9 18.0 116
DOME LAKE 8880 16.3 12.7 128 19.8 17.3 114
GRAVE SPRINGS 8550 12.0 -M * 14.7 13.3 111
HANSEN SAWMILL 8760 4.7 5.5 85 12.1 10.9 111
LOST CREEK 8080 21.3 14.7 145 20.4 15.9 128
MIDDLE POWDER 7760 17.6 14.4 122 18.8 15.6 121
POWDER RIVER PASS 9480 -M 8.4 * 17.9 15.5 115
SUCKER CREEK 8880 19.8 12.2 162 21.6 17.4 124
TIE CREEK 6870 6.3 -M * 17.9 14.5 123
----- -----
Basin wide percent of average 131 118
BELLE FOURCHE
BLIND PARK 6890 5.2 7.1 73 19.6 14.8 132
NORTH RAPID CREEK 6130 8.2 -M * 18.5 -M *
WARREN PEAK 6520 18.2 7.1 256 -M 11.0 *
----- -----
Basin wide percent of average 165 132*
UPPER N. PLATTE RIVER
COLUMBINE 9400 26.0 18.1 144 38.3 28.7 133
DIVIDE PEAK 8800 24.9 15.9 157 29.9 28.1 106
ELK RIVER 8700 22.0 12.4 177 31.0 22.6 137
JOE WRIGHT 10120 35.5 24.2 147 37.5 31.3 120
NORTH FRENCH CREEK 10100 39.3 28.1 140 36.3 29.0 125
OLD BATTLE 10000 48.7 37.6 130 46.5 36.6 127
SOUTH BRUSH CREEK 8400 7.6 8.3 92 21.7 21.2 102
TOWER 10500 31.3 51.0 61 59.7 44.6 134
WEBBER SPRINGS 9200 32.4 23.3 139 42.6 31.3 136
WILLOW CREEK PASS 9540 -M 12.1 * 20.2 16.1 125
----- -----
Basin wide percent of average 122 126
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 40.5 26.9 151 34.8 24.5 142
CASPER MTN. 7900 24.4 14.5 168 27.4 19.7 139
CHRISTINA LAKE 9980 21.6 17.6 123 27.9 20.9 133
DEADMAN HILL 10220 22.7 18.9 120 24.6 21.9 112
LAPRELE CREEK 8320 9.5 4.9 194 18.2 15.5 117
RENO HILL 8400 23.1 11.0 210 26.8 22.8 118
ROACH 9700 27.3 17.1 160 27.8 26.8 104
SAND LAKE 10080 45.2 36.3 125 35.4 25.6 138
SOUTH PASS 9040 26.1 17.3 151 30.1 21.4 141
WINDY PEAK 7840 2.9 5.7 51 14.1 13.0 108
----- -----
Basin wide percent of average 143 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 2.4 8 32.9 19.0 173
DIVIDE PEAK 8800 24.9 15.9 157 29.9 28.1 106
OLD BATTLE 10000 48.7 37.6 130 46.5 36.6 127
SANDSTONE RS 8150 8.8 6.1 144 26.2 23.7 111
WHISKEY PARK 8950 44.7 27.5 163 41.0 35.0 117
----- -----
Basin wide percent of average 142 124
UPPER GREEN RIVER
BIG SANDY OPENING 9100 15.5 11.9 130 19.6 19.0 103
BLIND BULL SUM 8650 44.6 22.6 197 37.0 27.5 135
EAST RIM DIVIDE 7930 14.8 13.8 107 18.8 17.7 106
ELKHART PARK G.S. 9400 17.4 11.9 146 21.0 18.7 112
GROS VENTRE SUMMIT 8775 21.7 12.0 181 23.2 18.6 125
KENDALL R.S. 7740 15.6 5.3 294 25.0 18.1 138
LOOMIS PARK 8240 -M 13.2 * 29.7 21.9 136
NEW FORK LAKE 8340 9.3 7.7 121 15.3 16.8 91
SNIDER BASIN 8250 17.5 10.8 162 21.9 17.7 124
SPRING CREEK DIVIDE 9000 36.7 27.8 132 37.3 31.5 118
TRIPLE PEAK 8500 32.5 23.1 141 43.8 35.9 122
----- -----
Basin wide percent of average 154 120
LOWER GREEN RIVER
HAMS FORK 7840 9.0 2.9 310 18.9 15.6 121
HEWINTA 9500 4.4 2.6 169 17.2 16.9 102
HICKERSON PARK 9150 5.2 1.8 289 12.5 13.0 96
HOLE-IN-ROCK 9150 3.0 1.4 214 12.8 13.0 98
INDIAN CREEK 9425 42.6 26.9 158 36.9 29.9 123
KELLEY R.S. 8180 19.9 12.5 159 35.2 21.9 161
STEEL CREEK PARK 10100 20.7 17.8 116 19.9 16.9 118
----- -----
Basin wide percent of average 159 121
UPPER BEAR RIVER
BUG LAKE 7950 30.5 13.1 233 34.4 23.1 149
HAYDEN FORK 9400 12.2 3.7 330 29.9 23.7 126
KELLEY R.S. 8180 19.9 12.5 159 35.2 21.9 161
LILY LAKE 9050 12.1 7.2 168 23.7 18.7 127
MONTE CRISTO 8960 39.1 24.1 162 39.3 31.1 126
SALT RIVER SUMMIT 7600 16.6 5.4 307 26.7 19.7 136
TRIAL LAKE 9960 36.2 22.5 161 38.9 29.1 134
----- -----
Basin wide percent of average 188 136
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.