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 SATURDAY: MAY 31 , 2008
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 1.3 .0 32.9 27.0 122
COTTONWOOD CREEK 7670 9.6 5.6 171 31.5 35.7 88
GRAND TARGHEE 9260 55.8 -M * 44.5 -M *
GRANITE CREEK 6770 2.0 1.3 154 28.3 24.8 114
GRASSY LAKE 7265 22.9 14.9 154 53.2 45.0 118
GROS VENTRE SUMMIT 8750 2.6 4.1 63 18.5 17.6 105
GUNSIGHT PASS 9820 7.0 -M * 19.5 -M *
LEWIS LAKE DIVIDE 7850 25.1 18.7 134 45.2 45.3 100
PHILLIPS BENCH 8200 22.6 14.6 155 42.1 36.5 115
SALT RIVER SUMMIT 7760 .0 .0 100 20.7 24.0 86
SNAKE RIVER STATION 6920 .0 .0 100 34.0 28.3 120
SPRING CREEK DIVIDE 9000 15.9 15.7 101 29.8 33.0 90
THUMB DIVIDE 7980 3.1 2.4 129 26.3 24.7 106
TOGWOTEE PASS 9580 28.9 22.4 129 38.0 32.6 117
TWO OCEAN PLATEAU 9240 43.1 25.6 168 41.1 36.2 114
WILLOW CREEK 8380 21.1 15.1 140 49.6 42.5 117
----- -----
Basin wide percent of average 140 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 27.9 20.6 135 31.7 26.9 118
BLACK BEAR 8170 44.5 26.9 165 52.7 50.2 105
CANYON 7870 6.2 1.7 365 25.8 20.4 126
FISHER CREEK 9100 -M 30.4 * 48.6 46.5 105
MADISON PLATEAU 7750 23.1 9.6 241 40.1 34.2 117
NORTHEAST ENTRANCE 7350 .0 .5 0 19.6 17.5 112
PARKER PEAK 9400 29.9 18.9 158 34.7 23.1 150
SYLVAN LAKE 8420 20.1 12.1 166 35.9 28.9 124
THUMB DIVIDE 7980 3.1 2.4 129 26.3 24.7 106
TWO OCEAN PLATEAU 9240 43.1 25.6 168 41.1 36.2 114
WHISKEY CREEK 6800 9.7 1.5 647 31.2 27.2 115
WHITE MILL 8700 27.2 18.6 146 35.1 35.1 100
WOLVERINE 7650 .0 .0 100 20.4 18.2 112
----- -----
Basin wide percent of average 170 114
WIND RIVER
BURROUGHS CREEK 8750 10.7 3.8 282 24.8 22.5 110
COLD SPRINGS 9630 .5 1.1 45 17.0 17.0 100
DEER PARK 9700 14.3 8.5 168 28.5 30.8 93
HOBBS PARK 10100 15.8 10.5 150 23.3 20.9 111
LITTLE WARM 9370 .1 2.2 5 20.0 19.9 101
SOUTH PASS 9040 8.1 6.8 119 25.3 25.9 98
ST. LAWRENCE ALT 8620 .5 .7 71 15.3 15.1 101
TOGWOTEE PASS 9580 28.9 22.4 129 38.0 32.6 117
TOWNSEND CREEK 8700 .7 1.9 37 20.0 18.7 107
----- -----
Basin wide percent of average 137 104
BIGHORN BASIN
BALD MTN. 9380 19.5 17.0 115 24.7 25.2 98
BEAR TRAP MEADOW 8200 .1 .0 18.4 14.1 130
BLACKWATER 9780 31.6 25.1 126 33.9 28.8 118
BONE SPRINGS DIV 9350 15.2 8.8 173 27.1 22.2 122
EVENING STAR 9200 29.7 27.1 110 44.6 34.3 130
GRAVE SPRINGS 8550 7.4 2.0 370 18.5 16.0 116
KIRWIN 9550 9.6 5.8 166 21.7 17.4 125
MARQUETTE 8760 7.6 4.5 169 20.0 17.9 112
MIDDLE POWDER 7760 4.4 3.0 147 17.6 19.0 93
OWL CREEK 8975 1.7 .6 283 12.9 11.0 117
POWDER RIVER PASS 9480 8.3 2.6 319 24.3 19.5 125
SHELL CREEK 9580 18.4 10.9 169 25.0 20.4 123
SYLVAN LAKE 8420 20.1 12.1 166 35.9 28.9 124
SYLVAN ROAD 7120 .0 .1 0 27.8 23.2 120
TIMBER CREEK 7950 2.9 .6 483 17.9 14.3 125
YOUNTS PEAK 8350 11.9 7.6 157 23.9 22.0 109
----- -----
Basin wide percent of average 147 118
SHOSHONE RIVER
BLACKWATER 9780 31.6 25.1 126 33.9 28.8 118
EVENING STAR 9200 29.7 27.1 110 44.6 34.3 130
KIRWIN 9550 9.6 5.8 166 21.7 17.4 125
MARQUETTE 8760 7.6 4.5 169 20.0 17.9 112
SYLVAN LAKE 8420 20.1 12.1 166 35.9 28.9 124
SYLVAN ROAD 7120 .0 .1 0 27.8 23.2 120
YOUNTS PEAK 8350 11.9 7.6 157 23.9 22.0 109
----- -----
Basin wide percent of average 134 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .0 18.4 14.1 130
BIG GOOSE 7990 5.8 3.3 176 21.9 16.3 134
BONE SPRINGS DIV 9350 15.2 8.8 173 27.1 22.2 122
BURGESS JUNCTION 7880 11.7 3.1 377 23.6 18.4 128
CLOUD PEAK RESERVOIR 9860 20.5 8.2 250 29.6 21.6 137
DOME LAKE 8880 10.2 3.5 291 26.0 20.5 127
GRAVE SPRINGS 8550 7.4 2.0 370 18.5 16.0 116
HANSEN SAWMILL 8360 3.4 .2 1700 21.8 14.0 156
MIDDLE POWDER 7760 4.4 3.0 147 17.6 19.0 93
POWDER RIVER PASS 9480 8.3 2.6 319 24.3 19.5 125
SUCKER CREEK 8880 15.3 4.0 382 28.1 21.4 131
TIE CREEK 6870 -M .0 * 22.2 17.1 130
----- -----
Basin wide percent of average 264 127
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100 18.4 17.8 103
COLE CANYON 5910 .0 .0 100 18.1 12.8 141
NORTH RAPID CREEK 6130 -M .0 * 19.8 13.9 142
----- -----
Basin wide percent of average * 127
UPPER N. PLATTE RIVER
COLUMBINE 9160 5.1 2.4 212 35.3 32.1 110
DIVIDE PEAK 8880 5.5 4.1 134 30.1 27.4 110
ELK RIVER 8700 .2 1.5 13 29.4 25.9 114
JOE WRIGHT 10120 -M 17.6 * -M 34.7 *
NORTH FRENCH CREEK 10130 26.6 24.6 108 38.9 34.2 114
OLD BATTLE 10000 32.7 26.4 124 49.1 44.1 111
SAGE CREEK BASIN 7850 .0 2.4 0 21.2 15.9 133
SOUTH BRUSH CREEK 8440 .1 1.9 5 23.1 23.6 98
TOWER 10500 41.0 43.4 94 51.8 49.9 104
WEBBER SPRINGS 9250 12.0 7.1 169 38.5 34.6 111
WILLOW CREEK PASS 9540 13.1 3.6 364 21.9 18.7 117
----- -----
Basin wide percent of average 116 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.5 12.3 102 30.4 31.0 98
CASPER MTN. 7900 6.7 4.5 149 25.8 23.9 108
DEADMAN HILL 10220 16.8 11.7 144 27.5 24.6 112
DEER PARK 9700 14.3 8.5 168 28.5 30.8 93
LAPRELE CREEK 8375 -M .9 * 20.6 20.0 103
RENO HILL 8400 8.2 3.7 222 29.8 24.6 121
ROACH 9700 11.3 6.3 179 29.6 26.3 113
SAND LAKE 10050 31.6 26.6 119 40.1 34.2 117
SOUTH PASS 9040 8.1 6.8 119 25.3 25.9 98
WINDY PEAK 7900 .7 .1 700 18.4 17.0 108
----- -----
Basin wide percent of average 137 107
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.9 102
DIVIDE PEAK 8880 5.5 4.1 134 30.1 27.4 110
OLD BATTLE 10000 32.7 26.4 124 49.1 44.1 111
SANDSTONE RS 8150 .1 .1 100 26.5 24.7 107
WHISKEY PARK 8950 -M 14.4 * 44.2 37.7 117
----- -----
Basin wide percent of average 125 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .7 1.9 37 18.7 18.5 101
BLIND BULL SUM 8650 23.5 18.3 128 23.4 28.0 84
EAST RIM DIVIDE 7930 .0 2.0 0 14.9 16.0 93
ELKHART PARK G.S. 9400 2.1 3.7 57 16.0 18.9 85
GROS VENTRE SUMMIT 8750 2.6 4.1 63 18.5 17.6 105
GUNSIGHT PASS 9820 7.0 -M * 19.5 -M *
KENDALL R.S. 7740 .0 .0 100 17.6 18.6 95
LOOMIS PARK 8240 .1 2.8 4 22.8 22.4 102
NEW FORK LAKE 8340 .0 .0 100 13.5 15.8 85
SNIDER BASIN 8060 .0 .0 100 18.1 20.4 89
SPRING CREEK DIVIDE 9000 15.9 15.7 101 29.8 33.0 90
TRIPLE PEAK 8500 13.3 5.6 238 36.6 31.8 115
----- -----
Basin wide percent of average 108 95
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 14.8 16.9 88
HEWINTA 9519 -M .7 * 21.8 20.2 108
HICKERSON PARK 9145 .0 .1 0 12.8 12.5 102
HOLE-IN-ROCK 9150 .0 .1 0 13.7 12.2 112
INDIAN CREEK 9425 18.9 15.3 124 -M 32.4 *
KELLEY R.S. 8180 1.8 1.9 95 23.1 26.1 89
STEEL CREEK PARK 10200 17.4 12.3 141 24.4 23.1 106
----- -----
Basin wide percent of average 128 100
UPPER BEAR RIVER
BUG LAKE 7950 5.0 3.0 167 22.0 25.1 88
HAYDEN FORK 9212 .2 1.6 12 29.9 28.4 105
KELLEY R.S. 8180 1.8 1.9 95 23.1 26.1 89
LILY LAKE 9156 .6 1.6 37 24.2 24.0 101
MONTE CRISTO 8960 15.8 13.2 120 32.1 34.0 94
SALT RIVER SUMMIT 7760 .0 .0 100 20.7 24.0 86
TRIAL LAKE 9992 13.1 15.1 87 30.9 33.2 93
----- -----
Basin wide percent of average 100 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.