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 27 , 2008
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 4.7 1.0 470 32.4 26.7 121
COTTONWOOD CREEK 7670 12.7 7.8 163 31.3 35.3 89
GRAND TARGHEE 9260 55.0 -M * 44.0 -M *
GRANITE CREEK 6770 4.3 3.0 143 27.5 24.5 112
GRASSY LAKE 7265 25.6 18.2 141 52.3 44.4 118
GROS VENTRE SUMMIT 8750 5.0 5.7 88 18.6 17.3 108
GUNSIGHT PASS 9820 7.6 -M * 19.4 -M *
LEWIS LAKE DIVIDE 7850 28.0 21.6 130 44.7 44.9 100
PHILLIPS BENCH 8200 23.7 17.2 138 41.7 36.1 116
SALT RIVER SUMMIT 7760 .2 .0 20.2 23.8 85
SNAKE RIVER STATION 6920 .0 .0 100 33.3 28.0 119
SPRING CREEK DIVIDE 9000 16.9 18.3 92 29.4 32.7 90
THUMB DIVIDE 7980 5.8 4.3 135 25.5 24.4 105
TOGWOTEE PASS 9580 29.4 24.1 122 37.7 32.2 117
TWO OCEAN PLATEAU 9240 42.9 27.3 157 40.4 35.7 113
WILLOW CREEK 8380 23.0 17.9 128 48.9 41.9 117
----- -----
Basin wide percent of average 133 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 28.4 22.6 126 31.1 26.5 117
BLACK BEAR 8170 44.5 30.2 147 51.9 49.7 104
CANYON 7870 9.0 2.9 310 25.7 20.1 128
FISHER CREEK 9100 48.2 32.3 149 48.3 46.0 105
MADISON PLATEAU 7750 25.3 12.3 206 39.9 33.7 118
NORTHEAST ENTRANCE 7350 .1 .7 14 19.3 17.1 113
PARKER PEAK 9400 30.2 20.8 145 -M 22.6 *
SYLVAN LAKE 8420 22.3 14.5 154 35.2 28.3 124
THUMB DIVIDE 7980 5.8 4.3 135 25.5 24.4 105
TWO OCEAN PLATEAU 9240 42.9 27.3 157 40.4 35.7 113
WHISKEY CREEK 6800 -M 3.2 * 31.0 26.8 116
WHITE MILL 8700 28.6 20.4 140 34.9 34.6 101
WOLVERINE 7650 .0 .4 0 19.9 17.9 111
----- -----
Basin wide percent of average 151 112
WIND RIVER
BURROUGHS CREEK 8750 11.6 5.5 211 24.4 22.1 110
COLD SPRINGS 9630 1.8 1.2 150 16.8 16.6 101
DEER PARK 9700 14.9 12.0 124 28.3 30.4 93
HOBBS PARK 10100 16.6 12.3 135 23.2 20.5 113
LITTLE WARM 9370 1.5 3.2 47 19.6 19.6 100
SOUTH PASS 9040 9.5 8.4 113 25.0 25.6 98
ST. LAWRENCE ALT 8620 2.2 .9 244 15.3 14.8 103
TOGWOTEE PASS 9580 29.4 24.1 122 37.7 32.2 117
TOWNSEND CREEK 8700 2.4 2.5 96 19.8 18.4 108
----- -----
Basin wide percent of average 128 105
BIGHORN BASIN
BALD MTN. 9380 19.8 19.2 103 23.8 24.8 96
BEAR TRAP MEADOW 8200 1.1 .1 1100 18.0 13.7 131
BLACKWATER 9780 30.9 27.0 114 33.1 28.2 117
BONE SPRINGS DIV 9350 17.2 11.4 151 26.6 21.7 123
EVENING STAR 9200 30.3 28.9 105 44.2 33.7 131
GRAVE SPRINGS 8550 9.3 2.7 344 18.3 15.7 117
KIRWIN 9550 10.3 7.5 137 21.4 17.0 126
MARQUETTE 8760 9.0 5.8 155 19.7 17.4 113
MIDDLE POWDER 7760 8.5 5.0 170 17.6 18.6 95
OWL CREEK 8975 3.0 .9 333 12.8 10.6 121
POWDER RIVER PASS 9480 9.7 3.6 269 23.7 19.0 125
SHELL CREEK 9580 18.8 12.8 147 24.2 20.0 121
SYLVAN LAKE 8420 22.3 14.5 154 35.2 28.3 124
SYLVAN ROAD 7120 .0 .3 0 27.5 22.9 120
TIMBER CREEK 7950 4.1 1.1 373 17.8 13.8 129
YOUNTS PEAK 8350 13.8 10.0 138 23.5 21.6 109
----- -----
Basin wide percent of average 138 118
SHOSHONE RIVER
BLACKWATER 9780 30.9 27.0 114 33.1 28.2 117
EVENING STAR 9200 30.3 28.9 105 44.2 33.7 131
KIRWIN 9550 10.3 7.5 137 21.4 17.0 126
MARQUETTE 8760 9.0 5.8 155 19.7 17.4 113
SYLVAN LAKE 8420 22.3 14.5 154 35.2 28.3 124
SYLVAN ROAD 7120 .0 .3 0 27.5 22.9 120
YOUNTS PEAK 8350 13.8 10.0 138 23.5 21.6 109
----- -----
Basin wide percent of average 124 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.1 .1 1100 18.0 13.7 131
BIG GOOSE 7990 7.8 5.4 144 21.6 16.0 135
BONE SPRINGS DIV 9350 17.2 11.4 151 26.6 21.7 123
BURGESS JUNCTION 7880 -M 5.1 * 23.3 18.1 129
CLOUD PEAK RESERVOIR 9860 21.2 10.5 202 -M 21.1 *
DOME LAKE 8880 11.6 4.9 237 25.4 20.1 126
GRAVE SPRINGS 8550 9.3 2.7 344 18.3 15.7 117
HANSEN SAWMILL 8360 -M .5 * -M 13.6 *
MIDDLE POWDER 7760 8.5 5.0 170 17.6 18.6 95
POWDER RIVER PASS 9480 9.7 3.6 269 23.7 19.0 125
SUCKER CREEK 8880 17.3 5.6 309 27.7 21.0 132
TIE CREEK 6870 .0 .0 100 21.9 16.7 131
----- -----
Basin wide percent of average 211 124
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 18.4 17.3 106
COLE CANYON 5910 .1 .0 17.1 12.4 138
NORTH RAPID CREEK 6130 .1 .0 19.5 13.6 143
----- -----
Basin wide percent of average * 127
UPPER N. PLATTE RIVER
COLUMBINE 9160 10.7 4.6 233 35.3 31.8 111
DIVIDE PEAK 8880 11.4 6.0 190 30.1 27.1 111
ELK RIVER 8700 5.3 2.4 221 29.3 25.6 114
JOE WRIGHT 10120 24.8 19.7 126 38.0 34.2 111
NORTH FRENCH CREEK 10130 29.1 27.5 106 38.9 33.7 115
OLD BATTLE 10000 35.7 29.2 122 49.1 43.7 112
SAGE CREEK BASIN 7850 .0 3.5 0 21.2 15.7 135
SOUTH BRUSH CREEK 8440 .1 2.8 4 22.8 23.2 98
TOWER 10500 45.2 46.4 97 51.7 49.4 105
WEBBER SPRINGS 9250 16.1 9.7 166 38.5 34.2 113
WILLOW CREEK PASS 9540 16.4 5.4 304 21.8 18.3 119
----- -----
Basin wide percent of average 124 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.0 15.1 106 30.2 30.6 99
CASPER MTN. 7900 10.7 6.0 178 25.7 23.4 110
DEADMAN HILL 10220 19.7 13.7 144 27.4 24.2 113
DEER PARK 9700 14.9 12.0 124 28.3 30.4 93
LAPRELE CREEK 8375 .1 1.4 7 20.6 19.6 105
RENO HILL 8400 12.4 4.9 253 29.5 24.2 122
ROACH 9700 14.7 8.0 184 29.5 25.9 114
SAND LAKE 10050 33.5 29.6 113 40.1 33.6 119
SOUTH PASS 9040 9.5 8.4 113 25.0 25.6 98
WINDY PEAK 7900 .8 .4 200 18.5 16.5 112
----- -----
Basin wide percent of average 133 108
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.6 103
DIVIDE PEAK 8880 11.4 6.0 190 30.1 27.1 111
OLD BATTLE 10000 35.7 29.2 122 49.1 43.7 112
SANDSTONE RS 8150 .0 .8 0 26.6 24.4 109
WHISKEY PARK 8950 36.3 18.0 202 44.2 37.3 118
----- -----
Basin wide percent of average 154 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.8 3.8 74 18.5 18.2 102
BLIND BULL SUM 8650 24.5 20.3 121 23.2 27.7 84
EAST RIM DIVIDE 7930 .0 3.9 0 14.9 15.7 95
ELKHART PARK G.S. 9400 3.0 5.2 58 15.6 18.6 84
GROS VENTRE SUMMIT 8750 5.0 5.7 88 18.6 17.3 108
GUNSIGHT PASS 9820 7.6 -M * 19.4 -M *
KENDALL R.S. 7740 .1 .0 17.3 18.3 95
LOOMIS PARK 8240 2.1 4.6 46 22.6 22.1 102
NEW FORK LAKE 8340 .1 .0 12.8 15.5 83
SNIDER BASIN 8060 .5 2.0 25 17.9 20.2 89
SPRING CREEK DIVIDE 9000 16.9 18.3 92 29.4 32.7 90
TRIPLE PEAK 8500 15.2 8.7 175 36.3 31.5 115
----- -----
Basin wide percent of average 97 96
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 14.5 16.7 87
HEWINTA 9519 -M 1.3 * 21.7 19.9 109
HICKERSON PARK 9145 .0 .2 0 12.8 12.3 104
HOLE-IN-ROCK 9150 .0 .2 0 13.7 11.9 115
INDIAN CREEK 9425 -M 17.7 * -M 32.1 *
KELLEY R.S. 8180 4.5 3.8 118 22.9 25.8 89
STEEL CREEK PARK 10200 18.4 14.1 130 24.4 22.8 107
----- -----
Basin wide percent of average 125 101
UPPER BEAR RIVER
BUG LAKE 7950 8.5 4.6 185 21.9 24.8 88
HAYDEN FORK 9212 .2 2.7 7 29.8 28.0 106
KELLEY R.S. 8180 4.5 3.8 118 22.9 25.8 89
LILY LAKE 9156 1.7 2.5 68 23.4 23.7 99
MONTE CRISTO 8960 18.3 15.7 117 31.9 33.6 95
SALT RIVER SUMMIT 7760 .2 .0 20.2 23.8 85
TRIAL LAKE 9992 14.4 17.4 83 30.6 32.8 93
----- -----
Basin wide percent of average 102 94
-----------------------------------------------------------------------------
-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 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.