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 MONDAY: JULY 11 , 2011
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 100* 38.7 29.4 132
COTTONWOOD CREEK 7670 .0 .0 100* 54.8 38.2 143
GRAND TARGHEE 9260 27.5 -M * 61.1 -M *
GRANITE CREEK 6770 .0 .0 100* 38.3 27.0 142
GRASSY LAKE 7265 -M .0 * 63.3 48.6 130
GROS VENTRE SUMMIT 8750 .0 .0 100* 25.4 20.2 126
GUNSIGHT PASS 9820 .8 -M * 30.8 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100* 56.7 48.6 117
PHILLIPS BENCH 8200 .0 .0 100* 51.3 39.3 131
SALT RIVER SUMMIT 7760 .0 .0 100* 31.4 25.9 121
SNAKE RIVER STATION 6920 -M .0 * 40.8 31.2 131
SPRING CREEK DIVIDE 9000 -M .0 * -M 35.2 *
THUMB DIVIDE 7980 .1 .0 * 33.9 27.2 125
TOGWOTEE PASS 9580 14.6 .0 * 49.0 35.5 138
TWO OCEAN PLATEAU 9240 11.3 .0 * 49.3 39.9 124
WILLOW CREEK 8380 .0 .0 100* 63.6 45.7 139
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Basin wide percent of average * 131
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.5 .8 188* 40.2 30.5 132
BLACK BEAR 8170 3.1 .0 * 70.8 54.1 131
CANYON 7870 .0 .0 100* 29.7 23.3 127
FISHER CREEK 9100 10.2 .4 2550* 59.9 51.4 117
MADISON PLATEAU 7750 .0 .0 100* 51.0 37.5 136
NORTHEAST ENTRANCE 7350 .0 .0 100* 26.3 20.9 126
PARKER PEAK 9400 .0 1.0 0* 44.7 26.7 167
SYLVAN LAKE 8420 .0 .0 100* 46.0 32.7 141
THUMB DIVIDE 7980 .1 .0 * 33.9 27.2 125
TWO OCEAN PLATEAU 9240 11.3 .0 * 49.3 39.9 124
WHISKEY CREEK 6800 .0 .0 100* 40.3 30.6 132
WHITE MILL 8700 .0 .0 100* 43.8 39.3 111
WOLVERINE 7650 .0 .0 100* 23.2 21.0 110
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Basin wide percent of average 1191* 128
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 30.6 25.2 121
CASTLE CREEK 8400 .0 -M * 15.8 -M *
COLD SPRINGS 9630 .0 .0 100* 21.9 19.8 111
DEER PARK 9700 .0 .0 100* 37.2 33.8 110
HOBBS PARK 10100 .0 .1 0* 29.6 23.9 124
LITTLE WARM 9370 .0 .0 100* 26.3 22.7 116
SOUTH PASS 9040 .0 .0 100* 27.4 28.5 96
ST. LAWRENCE ALT 8620 .0 .0 100* 21.5 17.9 120
TOGWOTEE PASS 9580 14.6 .0 * 49.0 35.5 138
TOWNSEND CREEK 8700 .0 .0 100* 23.3 21.4 109
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Basin wide percent of average 14600* 117
BIGHORN BASIN
BALD MTN. 9380 .7 .1 700* 38.5 29.0 133
BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 17.5 126
BLACKWATER 9780 6.3 1.3 485* 44.2 33.0 134
BONE SPRINGS DIV 9350 .0 .0 100* 33.5 26.2 128
EVENING STAR 9200 1.0 1.4 71* 55.0 38.7 142
GRAVE SPRINGS 8550 .0 .0 100* 23.4 19.3 121
KIRWIN 9550 .0 .0 100* 25.4 21.1 120
MARQUETTE 8760 .0 -M * 21.9 21.8 100
MIDDLE POWDER 7760 .0 .0 100* 24.5 22.3 110
OWL CREEK 8975 .0 .0 100* 16.4 13.9 118
POWDER RIVER PASS 9480 .0 .0 100* 32.9 23.0 143
SHELL CREEK 9580 .0 .0 100* 32.6 24.5 133
SYLVAN LAKE 8420 .0 .0 100* 46.0 32.7 141
SYLVAN ROAD 7120 .0 .0 100* 34.1 26.3 130
TIMBER CREEK 7950 .0 .0 100* 17.8 17.2 103
YOUNTS PEAK 8350 .0 .0 100* 27.7 25.4 109
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Basin wide percent of average 286* 127
SHOSHONE RIVER
BLACKWATER 9780 6.3 1.3 485* 44.2 33.0 134
EVENING STAR 9200 1.0 1.4 71* 55.0 38.7 142
KIRWIN 9550 .0 .0 100* 25.4 21.1 120
MARQUETTE 8760 .0 -M * 21.9 21.8 100
SYLVAN LAKE 8420 .0 .0 100* 46.0 32.7 141
SYLVAN ROAD 7120 .0 .0 100* 34.1 26.3 130
YOUNTS PEAK 8350 .0 .0 100* 27.7 25.4 109
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Basin wide percent of average 270* 128
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 17.5 126
BIG GOOSE 7990 .0 .0 100* 27.1 18.6 146
BONE SPRINGS DIV 9350 .0 .0 100* 33.5 26.2 128
BURGESS JUNCTION 7880 .0 .0 100* 28.1 22.0 128
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 33.3 25.7 130
DOME LAKE 8880 .0 .0 100* 30.1 23.9 126
GRAVE SPRINGS 8550 .0 .0 100* 23.4 19.3 121
HANSEN SAWMILL 8360 .0 .0 100* 22.8 17.6 130
LITTLE GOOSE 8870 .0 -M * 30.6 -M *
MIDDLE POWDER 7760 .0 .0 100* 24.5 22.3 110
POWDER RIVER PASS 9480 .0 .0 100* 32.9 23.0 143
SOLDIER PARK 8720 .0 -M * 22.9 -M *
SUCKER CREEK 8880 .0 .0 100* 34.3 25.2 136
TIE CREEK 6870 .0 .0 100* 28.1 20.6 136
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Basin wide percent of average * 130
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 32.0 21.9 146
COLE CANYON 5910 .0 .0 100* 29.3 17.4 168
NORTH RAPID CREEK 6130 .0 .0 100* 30.0 19.2 156
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Basin wide percent of average * 156
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .0 -M * 60.9 -M *
CINNABAR PARK 9574 -M .0 * 49.1 29.2 168
COLUMBINE 9160 .2 .0 * 51.1 34.1 150
DIVIDE PEAK 8880 .0 .0 100* 42.9 29.4 146
ELK RIVER 8700 .0 .0 100* 39.5 28.0 141
JOE WRIGHT 10120 -M .0 * 58.6 38.0 154
NORTH FRENCH CREEK 10130 12.6 .0 * -M 37.4 *
OLD BATTLE 10000 1.8 .1 1800* 69.2 46.6 148
SAGE CREEK BASIN 7850 -M .0 * -M 17.0 *
SOUTH BRUSH CREEK 8440 .0 .0 100* 35.1 26.3 133
TOWER 10500 21.4 2.8 764* 77.9 52.9 147
WEBBER SPRINGS 9250 .0 .0 100* 52.8 36.8 143
WILLOW CREEK PASS 9540 .0 .0 100* 33.3 21.6 154
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Basin wide percent of average 1241* 149
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 48.5 33.8 143
CASPER MTN. 7900 .0 .0 100* 26.5 26.6 100
DEADMAN HILL 10220 -M .0 * 36.2 26.8 135
DEER PARK 9700 .0 .0 100* 37.2 33.8 110
LAPRELE CREEK 8375 .0 .0 100* 25.0 22.5 111
RENO HILL 8400 .0 .0 100* 30.1 27.0 111
ROACH 9700 -M .0 * 38.9 28.8 135
SAND LAKE 10050 10.3 .4 2575* 55.6 37.2 149
SOUTH PASS 9040 .0 .0 100* 27.4 28.5 96
WINDY PEAK 7900 .0 .0 100* 21.9 19.6 112
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Basin wide percent of average 2575* 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * -M 22.5 *
DIVIDE PEAK 8880 .0 .0 100* 42.9 29.4 146
OLD BATTLE 10000 1.8 .1 1800* 69.2 46.6 148
SANDSTONE RS 8150 .8 .0 * 40.0 26.7 150
WHISKEY PARK 8950 -M .0 * 61.6 40.4 152
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Basin wide percent of average 2600* 149
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .0 .0 100* 26.0 20.9 124
BLIND BULL SUM 8650 1.1 .0 * 34.9 30.2 116
EAST RIM DIVIDE 7930 .0 .0 100* 21.7 17.8 122
ELKHART PARK G.S. 9400 .0 .0 100* 22.9 21.4 107
GROS VENTRE SUMMIT 8750 .0 .0 100* 25.4 20.2 126
GUNSIGHT PASS 9820 .8 -M * 30.8 -M *
KENDALL R.S. 7740 .0 .0 100* 23.8 20.5 116
LOOMIS PARK 8240 .1 .0 * 32.4 24.3 133
NEW FORK LAKE 8340 .1 .0 * 18.8 18.0 104
POCKET CREEK 9360 .2 -M * 24.3 -M *
SNIDER BASIN 8060 .0 .0 100* 28.1 21.9 128
SPRING CREEK DIVIDE 9000 -M .0 * -M 35.2 *
TRIPLE PEAK 8500 .0 .0 100* 49.8 34.3 145
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Basin wide percent of average * 124
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 24.6 18.8 131
HEWINTA 9519 .0 .0 100* 31.2 22.5 139
HICKERSON PARK 9145 .0 .0 100* 21.9 14.6 150
HOLE-IN-ROCK 9150 .0 .0 100* 23.1 14.4 160
INDIAN CREEK 9425 .0 .0 100* 40.8 34.4 119
KELLEY R.S. 8180 .0 .0 100* 36.1 28.1 128
STEEL CREEK PARK 10200 .0 .0 100* 35.7 25.5 140
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Basin wide percent of average * 135
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 43.6 26.8 163
HAYDEN FORK 9212 .0 .0 100* 46.1 30.6 151
KELLEY R.S. 8180 .0 .0 100* 36.1 28.1 128
LILY LAKE 9156 .0 .0 100* 36.5 26.1 140
MONTE CRISTO 8960 .0 .0 100* 56.0 36.0 156
SALT RIVER SUMMIT 7760 .0 .0 100* 31.4 25.9 121
TRIAL LAKE 9992 .0 .0 100* 51.1 35.8 143
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Basin wide percent of average * 144
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-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.
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-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.