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: APRIL 17 , 1997
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 30.5 15.3 199 36.1 24.1 150
COTTONWOOD CREEK 7600 32.4 22.9 141 34.0 27.0 126
GRANITE CREEK 6770 28.0 17.2 163 33.5 25.5 131
GRASSY LAKE 7265 49.1 37.3 132 56.3 40.1 140
GROS VENTRE SUMMIT 8775 22.7 15.7 145 21.9 17.3 127
LEWIS LAKE DIVIDE 7860 53.2 36.5 146 -M 40.8 *
PHILLIPS BENCH 8200 45.4 30.7 148 47.2 32.2 147
SALT RIVER SUMMIT 7600 21.9 13.4 163 24.6 18.3 134
SNAKE RIVER STATION 6920 27.7 18.3 151 37.6 28.1 134
SPRING CREEK DIVIDE 9000 38.3 29.4 130 33.7 29.5 114
THUMB DIVIDE 7980 33.6 17.1 196 34.0 22.5 151
TOGWOTEE PASS 9580 35.7 27.2 131 35.3 30.5 116
TWO OCEAN PLATEAU 9360 47.2 26.7 177 -M 33.2 *
WILLOW CREEK 8450 41.0 31.7 129 45.6 34.7 131
----- -----
Basin wide percent of average 149 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 37.1 25.6 145 31.9 19.8 161
BLACK BEAR 7950 -M 40.2 * -M 44.1 *
CANYON 7940 23.2 13.2 176 -M 15.4 *
FISHER CREEK 9100 56.8 38.0 149 -M 39.8 *
MADISON PLATEAU 7750 43.5 25.4 171 43.1 28.4 152
NORTHEAST ENTRANCE 7350 12.4 8.6 144 19.8 13.0 152
PARKER PEAK 9400 32.6 23.3 140 -M 17.0 *
SYLVAN LAKE 8420 32.4 23.9 136 33.9 20.9 162
THUMB DIVIDE 7980 33.6 17.1 196 34.0 22.5 151
TWO OCEAN PLATEAU 9360 47.2 26.7 177 -M 33.2 *
WHISKEY CREEK 6800 25.2 17.8 142 32.1 23.6 136
WHITE MILL 8700 39.5 25.9 153 -M 30.8 *
WOLVERINE 7650 13.5 11.3 119 16.1 14.1 114
----- -----
Basin wide percent of average 155 148
WIND RIVER
BURROUGHS CREEK 8750 24.1 15.0 161 26.9 18.1 149
CHRISTINA LAKE 9980 20.8 16.9 123 24.2 18.6 130
COLD SPRINGS 9630 10.1 8.5 119 13.5 11.9 113
HOBBS PARK 10100 19.1 16.7 114 15.5 15.9 97
LITTLE WARM 9620 18.7 13.1 143 21.3 14.9 143
SOUTH PASS 9040 25.8 17.7 146 26.2 19.0 138
ST. LAWRENCE ALT 8620 9.5 6.9 138 12.8 11.4 112
TOGWOTEE PASS 9580 35.7 27.2 131 35.3 30.5 116
TOWNSEND CREEK 8700 11.0 10.3 107 14.0 14.1 99
----- -----
Basin wide percent of average 132 123
BIGHORN BASIN
BALD MTN. 9375 24.1 22.5 107 20.2 19.2 105
BEAR TRAP MEADOW 7900 7.9 6.6 120 10.8 9.5 114
BLACKWATER 9780 40.4 24.8 163 31.2 19.4 161
BONE SPRINGS DIV 9350 20.6 18.1 114 18.7 16.7 112
EVENING STAR 9200 42.7 29.4 145 41.6 24.4 170
GRAVE SPRINGS 8550 13.7 -M * 12.6 11.1 114
KIRWIN 9550 15.5 11.2 138 17.2 12.1 142
LOST CREEK 8080 18.7 15.3 122 17.6 13.5 130
MARQUETTE 8760 13.0 8.7 149 13.6 11.6 117
MIDDLE POWDER 7760 19.0 13.8 138 16.3 13.4 122
OWL CREEK 8975 8.4 4.5 187 7.5 7.2 104
POWDER RIVER PASS 9480 -M 11.5 * 15.0 13.2 114
SHELL CREEK 9580 19.7 16.3 121 16.5 14.6 113
SYLVAN LAKE 8420 32.4 23.9 136 33.9 20.9 162
SYLVAN ROAD 8120 20.4 10.4 196 27.7 17.5 158
TIMBER CREEK 7950 8.0 6.5 123 9.1 8.6 106
YOUNTS PEAK 8350 25.2 18.3 138 -M 18.1 *
----- -----
Basin wide percent of average 137 133
SHOSHONE RIVER
BLACKWATER 9780 40.4 24.8 163 31.2 19.4 161
EVENING STAR 9200 42.7 29.4 145 41.6 24.4 170
KIRWIN 9550 15.5 11.2 138 17.2 12.1 142
MARQUETTE 8760 13.0 8.7 149 13.6 11.6 117
SYLVAN LAKE 8420 32.4 23.9 136 33.9 20.9 162
SYLVAN ROAD 8120 20.4 10.4 196 27.7 17.5 158
YOUNTS PEAK 8350 25.2 18.3 138 -M 18.1 *
----- -----
Basin wide percent of average 150 156
POWDER-TONGUE
BEAR TRAP MEADOW 7900 7.9 6.6 120 10.8 9.5 114
BONE SPRINGS DIV 9350 20.6 18.1 114 18.7 16.7 112
BURGESS JUNCTION 7880 16.0 13.0 123 15.9 13.0 122
CLOUD PEAK RESERVOIR 9860 19.8 16.9 117 17.1 15.3 112
DOME LAKE 8880 15.7 14.8 106 16.6 14.9 111
GRAVE SPRINGS 8550 13.7 -M * 12.6 11.1 114
HANSEN SAWMILL 8760 6.8 7.5 91 9.7 9.2 105
LOST CREEK 8080 18.7 15.3 122 17.6 13.5 130
MIDDLE POWDER 7760 19.0 13.8 138 16.3 13.4 122
POWDER RIVER PASS 9480 -M 11.5 * 15.0 13.2 114
SUCKER CREEK 8880 17.4 13.4 130 18.2 14.9 122
TIE CREEK 6870 7.9 -M * 14.7 12.5 118
----- -----
Basin wide percent of average 119 117
BELLE FOURCHE
BLIND PARK 6890 10.8 11.3 96 17.1 12.0 143
NORTH RAPID CREEK 6130 12.6 -M * 15.3 -M *
WARREN PEAK 6520 21.5 11.3 190 -M 9.2 *
----- -----
Basin wide percent of average 143 143*
UPPER N. PLATTE RIVER
COLUMBINE 9400 30.6 24.1 127 34.0 26.4 129
DIVIDE PEAK 8800 29.1 21.5 135 27.4 25.2 109
ELK RIVER 8700 29.8 19.9 150 27.7 20.7 134
JOE WRIGHT 10120 29.1 24.3 120 32.2 27.8 116
NORTH FRENCH CREEK 10100 38.3 28.4 135 31.4 25.9 121
OLD BATTLE 10000 44.2 36.1 122 41.1 33.1 124
SOUTH BRUSH CREEK 8400 14.0 12.7 110 19.2 18.6 103
TOWER 10500 58.1 49.3 118 48.5 39.9 122
WEBBER SPRINGS 9200 32.8 28.3 116 38.7 28.1 138
WILLOW CREEK PASS 9540 22.4 13.5 166 17.9 14.1 127
----- -----
Basin wide percent of average 127 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 38.4 29.0 132 29.7 21.7 137
CASPER MTN. 7900 25.2 18.9 133 23.0 16.6 139
CHRISTINA LAKE 9980 20.8 16.9 123 24.2 18.6 130
DEADMAN HILL 10220 18.8 18.0 104 20.7 19.0 109
LAPRELE CREEK 8320 15.7 9.5 165 16.2 13.3 122
RENO HILL 8400 25.9 15.2 170 23.2 20.9 111
ROACH 9700 24.5 18.1 135 24.3 23.6 103
SAND LAKE 10080 41.8 35.9 116 32.3 22.7 142
SOUTH PASS 9040 25.8 17.7 146 26.2 19.0 138
WINDY PEAK 7840 11.5 9.1 126 13.6 10.9 125
----- -----
Basin wide percent of average 132 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 16.3 10.1 161 29.9 17.0 176
DIVIDE PEAK 8800 29.1 21.5 135 27.4 25.2 109
OLD BATTLE 10000 44.2 36.1 122 41.1 33.1 124
SANDSTONE RS 8150 19.5 14.6 134 23.4 20.9 112
WHISKEY PARK 8950 42.1 30.6 138 34.2 31.3 109
----- -----
Basin wide percent of average 134 122
UPPER GREEN RIVER
BIG SANDY OPENING 9100 18.2 15.2 120 17.9 17.6 102
BLIND BULL SUM 8650 46.5 30.0 155 34.0 25.8 132
EAST RIM DIVIDE 7930 17.5 15.0 117 17.8 16.5 108
ELKHART PARK G.S. 9400 19.4 14.9 130 19.4 17.3 112
GROS VENTRE SUMMIT 8775 22.7 15.7 145 21.9 17.3 127
KENDALL R.S. 7740 23.3 12.8 182 24.1 16.8 143
LOOMIS PARK 8240 -M 16.7 * 28.0 20.4 137
NEW FORK LAKE 8340 15.4 10.5 147 13.8 15.7 88
SNIDER BASIN 8250 24.6 15.2 162 20.0 16.4 122
SPRING CREEK DIVIDE 9000 38.3 29.4 130 33.7 29.5 114
TRIPLE PEAK 8500 36.7 26.7 137 38.9 33.5 116
----- -----
Basin wide percent of average 142 119
LOWER GREEN RIVER
HAMS FORK 7840 15.2 5.7 267 15.4 14.5 106
HEWINTA 9500 13.4 8.5 158 15.2 14.8 103
HICKERSON PARK 9150 10.7 6.1 175 11.4 11.0 104
HOLE-IN-ROCK 9150 11.5 5.7 202 11.7 11.0 106
INDIAN CREEK 9425 43.2 30.2 143 32.8 28.0 117
KELLEY R.S. 8180 25.1 17.3 145 26.8 20.3 132
STEEL CREEK PARK 10100 17.5 18.0 97 17.2 14.6 118
----- -----
Basin wide percent of average 149 114
UPPER BEAR RIVER
BUG LAKE 7950 34.9 19.5 179 30.5 21.2 144
HAYDEN FORK 9400 18.0 10.3 175 26.2 21.2 124
KELLEY R.S. 8180 25.1 17.3 145 26.8 20.3 132
LILY LAKE 9050 18.2 12.4 147 20.5 16.5 124
MONTE CRISTO 8960 41.0 28.9 142 34.4 28.2 122
SALT RIVER SUMMIT 7600 21.9 13.4 163 24.6 18.3 134
TRIAL LAKE 9960 36.8 25.8 143 35.3 26.3 134
----- -----
Basin wide percent of average 154 130
-----------------------------------------------------------------------------
-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.