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 TUESDAY: MAY 31 , 2011
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 10.3 .0 * 36.3 27.0 134
COTTONWOOD CREEK 7670 30.4 5.6 543 50.6 35.7 142
GRAND TARGHEE 9260 70.0 -M * -M -M *
GRANITE CREEK 6770 13.8 1.3 1062* 34.8 24.8 140
GRASSY LAKE 7265 36.2 14.9 243 58.0 45.0 129
GROS VENTRE SUMMIT 8750 15.7 4.1 383 23.5 17.6 134
GUNSIGHT PASS 9820 -M -M * 28.0 -M *
LEWIS LAKE DIVIDE 7850 44.4 18.7 237 50.8 45.3 112
PHILLIPS BENCH 8200 37.7 14.6 258 47.8 36.5 131
SALT RIVER SUMMIT 7760 9.7 .0 * 29.6 24.0 123
SNAKE RIVER STATION 6920 -M .0 * 37.5 28.3 133
SPRING CREEK DIVIDE 9000 42.5 15.7 271 44.6 33.0 135
THUMB DIVIDE 7980 16.4 2.4 683 30.9 24.7 125
TOGWOTEE PASS 9580 42.8 22.4 191 46.3 32.6 142
TWO OCEAN PLATEAU 9240 53.9 25.6 211 45.6 36.2 126
WILLOW CREEK 8380 42.1 15.1 279 59.2 42.5 139
----- -----
Basin wide percent of average 282 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 34.1 20.6 166 36.9 26.9 137
BLACK BEAR 8170 53.9 26.9 200 63.4 50.2 126
CANYON 7870 14.3 1.7 841 27.2 20.4 133
FISHER CREEK 9100 53.9 30.4 177 56.1 46.5 121
MADISON PLATEAU 7750 31.4 9.6 327 46.2 34.2 135
NORTHEAST ENTRANCE 7350 .0 .5 0* 23.3 17.5 133
PARKER PEAK 9400 41.6 18.9 220 41.8 23.1 181
SYLVAN LAKE 8420 28.5 12.1 236 42.2 28.9 146
THUMB DIVIDE 7980 16.4 2.4 683 30.9 24.7 125
TWO OCEAN PLATEAU 9240 53.9 25.6 211 45.6 36.2 126
WHISKEY CREEK 6800 13.8 1.5 920* 35.1 27.2 129
WHITE MILL 8700 35.3 18.6 190 40.7 35.1 116
WOLVERINE 7650 2.5 .0 * 21.9 18.2 120
----- -----
Basin wide percent of average 225 131
WIND RIVER
BURROUGHS CREEK 8750 20.6 3.8 542 28.5 22.5 127
CASTLE CREEK 8400 .0 -M * 14.4 -M *
COLD SPRINGS 9630 10.8 1.1 982 20.0 17.0 118
DEER PARK 9700 25.5 8.5 300 34.0 30.8 110
HOBBS PARK 10100 25.9 10.5 247 27.1 20.9 130
LITTLE WARM 9370 16.1 2.2 732 22.3 19.9 112
SOUTH PASS 9040 20.8 6.8 306 26.0 25.9 100
ST. LAWRENCE ALT 8620 2.1 .7 300* 19.8 15.1 131
TOGWOTEE PASS 9580 42.8 22.4 191 46.3 32.6 142
TOWNSEND CREEK 8700 8.0 1.9 421 22.1 18.7 118
----- -----
Basin wide percent of average 298 121
BIGHORN BASIN
BALD MTN. 9380 41.0 17.0 241 33.8 25.2 134
BEAR TRAP MEADOW 8200 8.0 .0 * 19.7 14.1 140
BLACKWATER 9780 43.0 25.1 171 41.6 28.8 144
BONE SPRINGS DIV 9350 33.2 8.8 377 29.7 22.2 134
EVENING STAR 9200 42.0 27.1 155 51.9 34.3 151
GRAVE SPRINGS 8550 12.8 2.0 640 21.0 16.0 131
KIRWIN 9550 18.7 5.8 322 24.1 17.4 139
MARQUETTE 8760 14.5 -M * 20.1 17.9 112
MIDDLE POWDER 7760 12.6 3.0 420 21.4 19.0 113
OWL CREEK 8975 2.0 .6 333 14.9 11.0 135
POWDER RIVER PASS 9480 23.1 2.6 888 30.4 19.5 156
SHELL CREEK 9580 29.6 10.9 272 29.5 20.4 145
SYLVAN LAKE 8420 28.5 12.1 236 42.2 28.9 146
SYLVAN ROAD 7120 .0 .1 0* 31.3 23.2 135
TIMBER CREEK 7950 2.0 .6 333 16.3 14.3 114
YOUNTS PEAK 8350 20.3 7.6 267 25.3 22.0 115
----- -----
Basin wide percent of average 257 136
SHOSHONE RIVER
BLACKWATER 9780 43.0 25.1 171 41.6 28.8 144
EVENING STAR 9200 42.0 27.1 155 51.9 34.3 151
KIRWIN 9550 18.7 5.8 322 24.1 17.4 139
MARQUETTE 8760 14.5 -M * 20.1 17.9 112
SYLVAN LAKE 8420 28.5 12.1 236 42.2 28.9 146
SYLVAN ROAD 7120 .0 .1 0* 31.3 23.2 135
YOUNTS PEAK 8350 20.3 7.6 267 25.3 22.0 115
----- -----
Basin wide percent of average 196 137
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.0 .0 * 19.7 14.1 140
BIG GOOSE 7990 13.7 3.3 415 24.1 16.3 148
BONE SPRINGS DIV 9350 33.2 8.8 377 29.7 22.2 134
BURGESS JUNCTION 7880 15.7 3.1 506 25.6 18.4 139
CLOUD PEAK RESERVOIR 9860 27.8 8.2 339 30.0 21.6 139
DOME LAKE 8880 20.7 3.5 591 26.7 20.5 130
GRAVE SPRINGS 8550 12.8 2.0 640 21.0 16.0 131
HANSEN SAWMILL 8360 7.8 .2 3900* 20.1 14.0 144
LITTLE GOOSE 8870 18.1 -M * 27.7 -M *
MIDDLE POWDER 7760 12.6 3.0 420 21.4 19.0 113
POWDER RIVER PASS 9480 23.1 2.6 888 30.4 19.5 156
SOLDIER PARK 8720 11.3 -M * 20.5 -M *
SUCKER CREEK 8880 24.3 4.0 608 31.3 21.4 146
TIE CREEK 6870 3.4 .0 * 24.9 17.1 146
----- -----
Basin wide percent of average 525 139
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 28.5 17.8 160
COLE CANYON 5910 .0 .0 100* 24.4 12.8 191
NORTH RAPID CREEK 6130 .0 .0 100* 24.5 13.9 176
----- -----
Basin wide percent of average * 174
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 28.3 1.9 1489 46.9 26.7 176
COLUMBINE 9160 24.8 2.4 1033* 48.5 32.1 151
DIVIDE PEAK 8880 21.8 4.1 532 41.0 27.4 150
ELK RIVER 8700 16.1 1.5 1073* 37.9 25.9 146
JOE WRIGHT 10120 51.1 17.6 290 53.6 34.7 154
NORTH FRENCH CREEK 10130 64.2 24.6 261 61.6 34.2 180
OLD BATTLE 10000 58.2 26.4 220 67.1 44.1 152
SAGE CREEK BASIN 7850 .0 2.4 0 25.9 15.9 163
SOUTH BRUSH CREEK 8440 -M 1.9 * 33.2 23.6 141
TOWER 10500 78.8 43.4 182 72.0 49.9 144
WEBBER SPRINGS 9250 28.9 7.1 407 51.1 34.6 148
WILLOW CREEK PASS 9540 -M 3.6 * 28.9 18.7 155
----- -----
Basin wide percent of average 283 154
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M 12.3 * 47.1 31.0 152
CASPER MTN. 7900 4.9 4.5 109 23.5 23.9 98
DEADMAN HILL 10220 30.4 11.7 260 35.0 24.6 142
DEER PARK 9700 25.5 8.5 300 34.0 30.8 110
LAPRELE CREEK 8375 3.5 .9 389* 22.3 20.0 112
RENO HILL 8400 12.0 3.7 324 27.5 24.6 112
ROACH 9700 22.9 6.3 363 35.7 26.3 136
SAND LAKE 10050 52.2 26.6 196 52.9 34.2 155
SOUTH PASS 9040 20.8 6.8 306 26.0 25.9 100
WINDY PEAK 7900 .0 .1 0* 20.4 17.0 120
----- -----
Basin wide percent of average 249 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 25.8 20.9 123
DIVIDE PEAK 8880 21.8 4.1 532 41.0 27.4 150
OLD BATTLE 10000 58.2 26.4 220 67.1 44.1 152
SANDSTONE RS 8150 7.3 .1 7300* 37.4 24.7 151
WHISKEY PARK 8950 -M 14.4 * 59.4 37.7 158
----- -----
Basin wide percent of average 285* 149
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.3 1.9 753 23.9 18.5 129
BLIND BULL SUM 8650 42.2 18.3 231 32.3 28.0 115
EAST RIM DIVIDE 7930 .1 2.0 5 20.0 16.0 125
ELKHART PARK G.S. 9400 13.3 3.7 359 20.2 18.9 107
GROS VENTRE SUMMIT 8750 15.7 4.1 383 23.5 17.6 134
GUNSIGHT PASS 9820 -M -M * 28.0 -M *
KENDALL R.S. 7740 2.3 .0 * 23.2 18.6 125
LOOMIS PARK 8240 14.5 2.8 518 30.5 22.4 136
NEW FORK LAKE 8340 3.6 .0 * 16.8 15.8 106
POCKET CREEK 9360 14.4 -M * 22.1 -M *
SNIDER BASIN 8060 11.0 .0 * 26.6 20.4 130
SPRING CREEK DIVIDE 9000 42.5 15.7 271 44.6 33.0 135
TRIPLE PEAK 8500 33.3 5.6 595 47.2 31.8 148
----- -----
Basin wide percent of average 356 128
LOWER GREEN RIVER
HAMS FORK 7840 .3 .0 * 22.8 16.9 135
HEWINTA 9519 11.7 .7 1671* 28.5 20.2 141
HICKERSON PARK 9145 .4 .1 400* 18.6 12.5 149
HOLE-IN-ROCK 9150 1.3 .1 1300* 20.4 12.2 167
INDIAN CREEK 9425 38.5 15.3 252 38.3 32.4 118
KELLEY R.S. 8180 17.4 1.9 916 33.5 26.1 128
STEEL CREEK PARK 10200 29.2 12.3 237 33.1 23.1 143
----- -----
Basin wide percent of average 325* 136
UPPER BEAR RIVER
BUG LAKE 7950 30.3 3.0 1010 41.7 25.1 166
HAYDEN FORK 9212 16.7 1.6 1044* 42.8 28.4 151
KELLEY R.S. 8180 17.4 1.9 916 33.5 26.1 128
LILY LAKE 9156 22.0 1.6 1375 34.1 24.0 142
MONTE CRISTO 8960 49.5 13.2 375 53.9 34.0 159
SALT RIVER SUMMIT 7760 9.7 .0 * 29.6 24.0 123
TRIAL LAKE 9992 51.1 15.1 338 47.9 33.2 144
----- -----
Basin wide percent of average 540 146
-----------------------------------------------------------------------------
-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.