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 26 , 1999
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 3.8 1.7 218* 30.9 27.4 113
COTTONWOOD CREEK 7600 13.7 5.0 275 36.8 30.7 121
GRANITE CREEK 6770 5.8 3.8 157 27.9 29.4 96
GRASSY LAKE 7265 29.7 17.4 171 49.9 45.5 110
GROS VENTRE SUMMIT 8775 11.5 3.7 320 20.4 19.9 104
LEWIS LAKE DIVIDE 7860 33.2 23.4 143 46.3 46.3 100
PHILLIPS BENCH 8200 25.9 20.4 127 37.4 36.5 103
SALT RIVER SUMMIT 7600 .9 .0 * 23.2 21.0 111
SNAKE RIVER STATION 6920 .0 4.1 22 30.4 32.0 95
SPRING CREEK DIVIDE 9000 31.7 21.5 148 36.3 33.3 110
THUMB DIVIDE 7980 -M 4.0 * -M 25.7 *
TOGWOTEE PASS 9580 -M 24.5 * 35.8 34.8 104
TWO OCEAN PLATEAU 9360 37.9 23.9 159 37.3 37.8 99
WILLOW CREEK 8450 23.7 22.4 106 49.0 39.3 125
----- -----
Basin wide percent of average 148 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 24.7 21.4 116 28.4 24.4 117
BLACK BEAR 7950 54.8 30.9 178 60.3 49.9 121
CANYON 7940 6.5 3.3 197 22.9 18.4 125
FISHER CREEK 9100 40.8 33.8 121 44.2 46.2 96
MADISON PLATEAU 7750 -M 11.6 * 39.3 32.8 121
NORTHEAST ENTRANCE 7350 .2 1.2 10 18.0 16.0 113
PARKER PEAK 9400 20.9 20.2 104 -M 20.9 *
SYLVAN LAKE 8420 24.4 16.4 149 36.3 25.7 142
THUMB DIVIDE 7980 -M 4.0 * -M 25.7 *
TWO OCEAN PLATEAU 9360 37.9 23.9 159 37.3 37.8 99
WHISKEY CREEK 6800 11.6 4.3 277 30.4 27.2 113
WHITE MILL 8700 26.9 21.4 126 30.4 35.9 85
WOLVERINE 7650 .0 1.2 0* 15.0 17.7 86
----- -----
Basin wide percent of average 140 110
WIND RIVER
BURROUGHS CREEK 8750 13.4 3.8 351 23.7 22.0 108
COLD SPRINGS 9630 12.5 1.2 1042 24.9 15.6 160
DEER PARK 9700 23.7 -M * 34.3 -M *
HOBBS PARK 10100 24.9 12.0 208 29.2 20.4 144
LITTLE WARM 9620 13.0 2.4 542 25.2 18.9 135
SOUTH PASS 9040 18.9 12.4 153 31.4 23.4 134
ST. LAWRENCE ALT 8620 4.3 1.0 421 21.9 14.5 153
TOGWOTEE PASS 9580 -M 24.5 * 35.8 34.8 104
TOWNSEND CREEK 8700 11.4 3.4 333 26.7 18.2 148
----- -----
Basin wide percent of average 272 131
BIGHORN BASIN
BALD MTN. 9375 23.5 20.7 115 26.2 24.5 107
BEAR TRAP MEADOW 7900 .7 .5 140* 18.4 13.4 139
BLACKWATER 9780 31.9 21.0 152 31.4 23.4 134
BONE SPRINGS DIV 9350 20.4 11.2 183 26.4 21.5 123
EVENING STAR 9200 32.8 27.2 121 41.2 29.2 141
GRAVE SPRINGS 8550 3.5 5.3 68 19.0 15.5 123
KIRWIN 9550 14.2 7.0 206 21.7 15.7 138
MARQUETTE 8760 15.7 5.5 291 22.0 16.7 133
MIDDLE POWDER 7760 10.4 6.6 157 22.9 17.7 131
OWL CREEK 8975 5.3 .5 1041* 15.7 10.2 154
POWDER RIVER PASS 9480 7.8 3.2 252 23.0 17.7 131
SHELL CREEK 9580 17.0 13.4 128 21.5 19.2 113
SYLVAN LAKE 8420 24.4 16.4 149 36.3 25.7 142
SYLVAN ROAD 8120 1.0 2.2 48 22.7 21.2 107
TIMBER CREEK 7950 6.0 1.2 537 18.4 13.1 141
YOUNTS PEAK 8350 17.5 11.5 153 22.9 21.9 106
----- -----
Basin wide percent of average 152 128
SHOSHONE RIVER
BLACKWATER 9780 31.9 21.0 152 31.4 23.4 134
EVENING STAR 9200 32.8 27.2 121 41.2 29.2 141
KIRWIN 9550 14.2 7.0 206 21.7 15.7 138
MARQUETTE 8760 15.7 5.5 291 22.0 16.7 133
SYLVAN LAKE 8420 24.4 16.4 149 36.3 25.7 142
SYLVAN ROAD 8120 1.0 2.2 48 22.7 21.2 107
YOUNTS PEAK 8350 17.5 11.5 153 22.9 21.9 106
----- -----
Basin wide percent of average 152 129
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .7 .5 140* 18.4 13.4 139
BIG GOOSE 7990 5.3 -M * 19.9 -M *
BONE SPRINGS DIV 9350 20.4 11.2 183 26.4 21.5 123
BURGESS JUNCTION 7880 7.8 5.5 142 18.9 17.2 111
CLOUD PEAK RESERVOIR 9860 20.2 11.1 182 26.0 20.5 127
DOME LAKE 8880 -M 6.3 * 18.9 19.5 97
GRAVE SPRINGS 8550 3.5 5.3 68 19.0 15.5 123
HANSEN SAWMILL 8760 .0 2.0 0 18.0 12.5 145
MIDDLE POWDER 7760 10.4 6.6 157 22.9 17.7 131
POWDER RIVER PASS 9480 7.8 3.2 252 23.0 17.7 131
SUCKER CREEK 8880 11.4 6.3 180 23.5 19.9 119
TIE CREEK 6870 .3 -M * 19.4 16.4 119
----- -----
Basin wide percent of average 160 123
BELLE FOURCHE
BLIND PARK 6890 .0 1.7 0 21.4 17.4 123
NORTH RAPID CREEK 6130 .0 -M * 18.2 -M *
WARREN PEAK 6520 .0 1.7 0 -M 12.9 *
----- -----
Basin wide percent of average 0 123*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .3 6.8 5 30.2 30.4 100
DIVIDE PEAK 8800 8.2 6.3 131 32.8 30.2 109
ELK RIVER 8700 .0 3.3 0 30.0 24.2 125
JOE WRIGHT 10120 19.9 19.5 102 34.4 34.2 101
NORTH FRENCH CREEK 10100 38.3 22.5 171 39.8 31.5 127
OLD BATTLE 10000 36.5 28.7 128 49.3 38.9 127
SOUTH BRUSH CREEK 8400 7.0 2.8 251 27.4 22.9 120
TOWER 10500 47.7 46.8 102 51.0 48.3 106
WEBBER SPRINGS 9200 11.5 14.0 82 35.5 33.3 107
WILLOW CREEK PASS 9540 8.9 5.3 167 17.2 17.9 97
----- -----
Basin wide percent of average 115 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.2 17.2 124 33.2 26.5 125
CASPER MTN. 7900 .6 6.3 10 23.9 22.2 108
DEADMAN HILL 10220 16.0 13.2 122 25.0 24.0 105
DEER PARK 9700 23.7 -M * 34.3 -M *
LAPRELE CREEK 8320 .0 1.9 0 21.9 17.5 126
RENO HILL 8400 3.2 5.0 63 27.2 24.0 113
ROACH 9700 -M 10.5 * 26.9 29.4 92
SAND LAKE 10080 46.3 28.5 163 40.8 27.9 147
SOUTH PASS 9040 18.9 12.4 153 31.4 23.4 134
WINDY PEAK 7840 .0 1.4 0 19.0 15.1 126
----- -----
Basin wide percent of average 124 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * 24.0 20.5 118
DIVIDE PEAK 8800 8.2 6.3 131 32.8 30.2 109
OLD BATTLE 10000 36.5 28.7 128 49.3 38.9 127
SANDSTONE RS 8150 .0 .0 0* 27.2 25.5 107
WHISKEY PARK 8950 -M 16.7 * 39.7 37.5 106
----- -----
Basin wide percent of average 125* 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.5 3.5 212 20.0 20.2 100
BLIND BULL SUM 8650 32.7 18.7 176 28.7 29.0 99
EAST RIM DIVIDE 7930 9.2 9.1 102 18.4 18.9 98
ELKHART PARK G.S. 9400 9.5 6.5 147 20.0 19.9 101
GROS VENTRE SUMMIT 8775 11.5 3.7 320 20.4 19.9 104
KENDALL R.S. 7740 .3 .0 * 20.5 19.4 107
LOOMIS PARK 8240 -M 4.0 * 25.4 23.4 109
NEW FORK LAKE 8340 2.3 2.3 105 17.4 18.0 97
SNIDER BASIN 8250 8.0 3.0 264 23.2 18.9 123
SPRING CREEK DIVIDE 9000 31.7 21.5 148 36.3 33.3 110
TRIPLE PEAK 8500 20.5 17.0 121 39.4 38.2 104
----- -----
Basin wide percent of average 157 105
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 * 18.5 16.7 112
HEWINTA 9500 3.7 .0 * 20.5 18.5 111
HICKERSON PARK 9150 .0 .3 0* 16.2 14.7 110
HOLE-IN-ROCK 9150 .0 .3 0* 16.0 14.7 109
INDIAN CREEK 9425 31.4 20.2 157 35.0 31.7 111
KELLEY R.S. 8180 6.3 3.7 175 24.9 23.4 106
STEEL CREEK PARK 10100 19.9 13.7 146 24.9 19.2 130
----- -----
Basin wide percent of average 152* 113
UPPER BEAR RIVER
BUG LAKE 7950 12.4 5.1 242 29.7 24.5 122
HAYDEN FORK 9400 4.5 .3 1467* 29.2 25.7 115
KELLEY R.S. 8180 6.3 3.7 175 24.9 23.4 106
LILY LAKE 9050 3.3 2.8 123 25.5 20.7 124
MONTE CRISTO 8960 31.9 14.1 226 38.5 33.2 117
SALT RIVER SUMMIT 7600 .9 .0 * 23.2 21.0 111
TRIAL LAKE 9960 21.4 15.2 141 31.9 31.2 103
----- -----
Basin wide percent of average 194 114
-----------------------------------------------------------------------------
-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.