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 26 , 2011
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 12.2 1.4 871* 35.5 26.6 133
COTTONWOOD CREEK 7670 30.0 8.3 361 49.2 35.2 140
GRAND TARGHEE 9260 71.0 -M * -M -M *
GRANITE CREEK 6770 14.7 3.4 432 33.5 24.4 137
GRASSY LAKE 7265 36.2 19.0 191 56.2 44.3 127
GROS VENTRE SUMMIT 8750 17.1 6.0 285 23.1 17.2 134
GUNSIGHT PASS 9820 -M -M * 27.2 -M *
LEWIS LAKE DIVIDE 7850 46.3 22.3 208 49.9 44.7 112
PHILLIPS BENCH 8200 38.1 17.8 214 47.2 36.0 131
SALT RIVER SUMMIT 7760 10.3 .0 * 28.8 23.7 122
SNAKE RIVER STATION 6920 -M .0 * 36.3 27.9 130
SPRING CREEK DIVIDE 9000 42.5 18.9 225 43.0 32.6 132
THUMB DIVIDE 7980 16.1 4.8 335 29.6 24.3 122
TOGWOTEE PASS 9580 41.5 24.4 170 44.7 32.1 139
TWO OCEAN PLATEAU 9240 53.2 27.7 192 44.2 35.6 124
WILLOW CREEK 8380 42.0 18.6 226 57.6 41.8 138
----- -----
Basin wide percent of average 232 130
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 32.1 22.9 140 35.5 26.4 134
BLACK BEAR 8170 50.8 30.9 164 60.2 49.5 122
CANYON 7870 13.2 3.1 426 25.4 20.0 127
FISHER CREEK 9100 52.6 32.7 161 54.7 45.8 119
MADISON PLATEAU 7750 28.9 13.0 222 42.9 33.5 128
NORTHEAST ENTRANCE 7350 .9 .8 113* 22.5 17.0 132
PARKER PEAK 9400 39.1 21.1 185 40.0 22.5 178
SYLVAN LAKE 8420 28.0 15.0 187 39.9 28.2 141
THUMB DIVIDE 7980 16.1 4.8 335 29.6 24.3 122
TWO OCEAN PLATEAU 9240 53.2 27.7 192 44.2 35.6 124
WHISKEY CREEK 6800 12.1 3.9 310 32.1 26.7 120
WHITE MILL 8700 34.8 20.9 167 39.6 34.5 115
WOLVERINE 7650 3.3 .4 825* 21.1 17.8 119
----- -----
Basin wide percent of average 185 128
WIND RIVER
BURROUGHS CREEK 8750 20.3 6.0 338 27.3 22.0 124
CASTLE CREEK 8400 .0 -M * 13.8 -M *
COLD SPRINGS 9630 10.2 1.2 850 18.2 16.5 110
DEER PARK 9700 23.4 12.7 184 31.6 30.3 104
HOBBS PARK 10100 24.4 12.8 191 25.3 20.3 125
LITTLE WARM 9370 15.8 3.5 451 21.0 19.5 108
SOUTH PASS 9040 19.4 8.8 220 23.6 25.5 93
ST. LAWRENCE ALT 8620 1.8 1.0 180 17.6 14.7 120
TOGWOTEE PASS 9580 41.5 24.4 170 44.7 32.1 139
TOWNSEND CREEK 8700 7.4 2.6 285 20.1 18.3 110
----- -----
Basin wide percent of average 225 115
BIGHORN BASIN
BALD MTN. 9380 39.2 19.5 201 32.4 24.7 131
BEAR TRAP MEADOW 8200 8.2 .1 8200* 17.9 13.6 132
BLACKWATER 9780 40.5 27.3 148 39.5 28.1 141
BONE SPRINGS DIV 9350 32.4 11.8 275 28.4 21.6 131
EVENING STAR 9200 40.4 29.1 139 48.9 33.5 146
GRAVE SPRINGS 8550 12.6 2.8 450 19.1 15.6 122
KIRWIN 9550 18.5 7.8 237 23.1 16.9 137
MARQUETTE 8760 13.3 -M * 18.9 17.3 109
MIDDLE POWDER 7760 13.1 5.5 238 20.5 18.6 110
OWL CREEK 8975 2.4 1.0 240 13.4 10.6 126
POWDER RIVER PASS 9480 22.3 3.9 572 28.9 18.9 153
SHELL CREEK 9580 27.7 13.1 211 27.5 19.9 138
SYLVAN LAKE 8420 28.0 15.0 187 39.9 28.2 141
SYLVAN ROAD 7120 .0 .3 0* 29.7 22.8 130
TIMBER CREEK 7950 3.3 1.1 300 14.9 13.7 109
YOUNTS PEAK 8350 20.6 10.3 200 24.6 21.5 114
----- -----
Basin wide percent of average 208 131
SHOSHONE RIVER
BLACKWATER 9780 40.5 27.3 148 39.5 28.1 141
EVENING STAR 9200 40.4 29.1 139 48.9 33.5 146
KIRWIN 9550 18.5 7.8 237 23.1 16.9 137
MARQUETTE 8760 13.3 -M * 18.9 17.3 109
SYLVAN LAKE 8420 28.0 15.0 187 39.9 28.2 141
SYLVAN ROAD 7120 .0 .3 0* 29.7 22.8 130
YOUNTS PEAK 8350 20.6 10.3 200 24.6 21.5 114
----- -----
Basin wide percent of average 165 133
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.2 .1 8200* 17.9 13.6 132
BIG GOOSE 7990 13.8 5.8 238 22.9 15.9 144
BONE SPRINGS DIV 9350 32.4 11.8 275 28.4 21.6 131
BURGESS JUNCTION 7880 15.7 5.5 285 24.5 18.0 136
CLOUD PEAK RESERVOIR 9860 25.8 10.9 237 27.7 20.9 133
DOME LAKE 8880 20.4 5.3 385 25.2 20.0 126
GRAVE SPRINGS 8550 12.6 2.8 450 19.1 15.6 122
HANSEN SAWMILL 8360 7.6 .6 1267* 17.4 13.5 129
LITTLE GOOSE 8870 17.8 -M * 26.7 -M *
MIDDLE POWDER 7760 13.1 5.5 238 20.5 18.6 110
POWDER RIVER PASS 9480 22.3 3.9 572 28.9 18.9 153
SOLDIER PARK 8720 10.2 -M * 18.2 -M *
SUCKER CREEK 8880 23.6 6.0 393 30.1 20.9 144
TIE CREEK 6870 4.0 .0 * 23.3 16.6 140
----- -----
Basin wide percent of average 343 134
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 27.2 17.2 158
COLE CANYON 5910 .0 .0 100* 23.3 12.3 189
NORTH RAPID CREEK 6130 .0 .0 100* 23.3 13.6 171
----- -----
Basin wide percent of average * 171
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 28.5 4.3 663 46.1 26.4 175
COLUMBINE 9160 29.8 5.2 573 48.2 31.8 152
DIVIDE PEAK 8880 26.4 6.5 406 40.8 27.0 151
ELK RIVER 8700 19.2 2.7 711 37.1 25.5 145
JOE WRIGHT 10120 52.3 20.2 259 52.9 34.1 155
NORTH FRENCH CREEK 10130 64.8 28.1 231 -M 33.6 *
OLD BATTLE 10000 59.4 29.9 199 65.8 43.6 151
SAGE CREEK BASIN 7850 .0 3.8 0 25.7 15.6 165
SOUTH BRUSH CREEK 8440 15.4 3.0 513 33.5 23.1 145
TOWER 10500 79.3 47.1 168 69.8 49.3 142
WEBBER SPRINGS 9250 32.5 10.4 313 50.1 34.1 147
WILLOW CREEK PASS 9540 25.9 5.9 439 28.8 18.2 158
----- -----
Basin wide percent of average 259 152
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M 15.9 * 46.5 30.5 152
CASPER MTN. 7900 6.9 6.4 108 22.7 23.3 97
DEADMAN HILL 10220 32.0 14.1 227 34.6 24.1 144
DEER PARK 9700 23.4 12.7 184 31.6 30.3 104
LAPRELE CREEK 8375 6.5 1.5 433 21.5 19.5 110
RENO HILL 8400 14.3 5.2 275 26.3 24.1 109
ROACH 9700 25.6 8.4 305 35.2 25.8 136
SAND LAKE 10050 53.1 30.3 175 52.3 33.5 156
SOUTH PASS 9040 19.4 8.8 220 23.6 25.5 93
WINDY PEAK 7900 .2 .4 50* 19.3 16.4 118
----- -----
Basin wide percent of average 207 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 25.1 20.6 122
DIVIDE PEAK 8880 26.4 6.5 406 40.8 27.0 151
OLD BATTLE 10000 59.4 29.9 199 65.8 43.6 151
SANDSTONE RS 8150 11.5 .9 1278* 36.7 24.3 151
WHISKEY PARK 8950 -M 18.8 * 58.1 37.2 156
----- -----
Basin wide percent of average 261* 148
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.0 4.3 302 22.1 18.1 122
BLIND BULL SUM 8650 43.6 20.8 210 31.5 27.6 114
EAST RIM DIVIDE 7930 .7 4.4 16 19.1 15.7 122
ELKHART PARK G.S. 9400 13.8 5.6 246 19.5 18.5 105
GROS VENTRE SUMMIT 8750 17.1 6.0 285 23.1 17.2 134
GUNSIGHT PASS 9820 -M -M * 27.2 -M *
KENDALL R.S. 7740 4.4 .0 * 22.8 18.2 125
LOOMIS PARK 8240 15.0 5.1 294 29.9 22.1 135
NEW FORK LAKE 8340 4.9 .0 * 16.4 15.4 106
POCKET CREEK 9360 13.4 -M * 21.0 -M *
SNIDER BASIN 8060 11.6 2.5 464 25.6 20.1 127
SPRING CREEK DIVIDE 9000 42.5 18.9 225 43.0 32.6 132
TRIPLE PEAK 8500 33.0 9.5 347 45.7 31.4 146
----- -----
Basin wide percent of average 259 126
LOWER GREEN RIVER
HAMS FORK 7840 2.2 .0 * 22.3 16.6 134
HEWINTA 9519 11.8 1.4 843 27.2 19.9 137
HICKERSON PARK 9145 .0 .3 0* 17.1 12.2 140
HOLE-IN-ROCK 9150 .4 .3 133* 19.1 11.8 162
INDIAN CREEK 9425 38.2 18.2 210 36.7 32.0 115
KELLEY R.S. 8180 17.3 4.2 412 32.4 25.8 126
STEEL CREEK PARK 10200 28.8 14.5 199 31.7 22.7 140
----- -----
Basin wide percent of average 254 132
UPPER BEAR RIVER
BUG LAKE 7950 30.7 5.0 614 40.0 24.7 162
HAYDEN FORK 9212 18.7 3.0 623 41.7 27.9 149
KELLEY R.S. 8180 17.3 4.2 412 32.4 25.8 126
LILY LAKE 9156 22.7 2.8 811 33.0 23.6 140
MONTE CRISTO 8960 47.9 16.4 292 51.4 33.5 153
SALT RIVER SUMMIT 7760 10.3 .0 * 28.8 23.7 122
TRIAL LAKE 9992 52.0 18.0 289 46.9 32.7 143
----- -----
Basin wide percent of average 404 143
-----------------------------------------------------------------------------
-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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 1971-2000.
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.