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 25 , 2010
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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 2.4 0 17.3 26.4 66
COTTONWOOD CREEK 7670 11.0 9.4 117 29.5 35.0 84
GRAND TARGHEE 9260 45.9 -M * 37.7 -M *
GRANITE CREEK 6770 .0 4.2 0 15.8 24.3 65
GRASSY LAKE 7265 13.7 20.5 67 33.0 44.0 75
GROS VENTRE SUMMIT 8750 5.3 6.8 78 13.6 17.0 80
GUNSIGHT PASS 9820 11.2 -M * 16.3 -M *
LEWIS LAKE DIVIDE 7850 14.0 23.6 59 27.7 44.5 62
PHILLIPS BENCH 8200 12.9 19.0 68 25.5 35.8 71
SALT RIVER SUMMIT 7760 .1 .5 20* 17.1 23.5 73
SNAKE RIVER STATION 6920 .0 1.1 0* 20.8 27.7 75
SPRING CREEK DIVIDE 9000 21.3 20.1 106 25.0 32.5 77
THUMB DIVIDE 7980 .1 5.7 2 17.3 24.2 71
TOGWOTEE PASS 9580 23.3 25.1 93 -M 31.9 *
TWO OCEAN PLATEAU 9240 25.4 28.4 89 23.5 35.3 67
WILLOW CREEK 8380 19.8 19.9 99 38.2 41.5 92
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Basin wide percent of average 79 74
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 17.3 23.5 74 18.8 26.2 72
BLACK BEAR 8170 23.2 32.1 72 33.4 49.3 68
CANYON 7870 1.8 3.8 47 15.0 19.8 76
FISHER CREEK 9100 25.7 33.2 77 30.9 45.5 68
MADISON PLATEAU 7750 11.9 14.2 84 26.4 33.3 79
NORTHEAST ENTRANCE 7350 .0 1.0 0* 12.6 16.8 75
PARKER PEAK 9400 18.2 21.7 84 17.7 22.3 79
SYLVAN LAKE 8420 11.0 16.0 69 23.8 27.9 85
THUMB DIVIDE 7980 .1 5.7 2 17.3 24.2 71
TWO OCEAN PLATEAU 9240 25.4 28.4 89 23.5 35.3 67
WHISKEY CREEK 6800 2.5 5.0 50 17.0 26.5 64
WHITE MILL 8700 17.0 21.7 78 21.5 34.2 63
WOLVERINE 7650 .0 .7 0* 10.0 17.6 57
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Basin wide percent of average 74 71
WIND RIVER
BURROUGHS CREEK 8750 9.7 6.7 145 14.2 21.8 65
COLD SPRINGS 9630 7.8 1.5 520 19.2 16.4 117
DEER PARK 9700 21.9 13.8 159 28.7 30.0 96
HOBBS PARK 10100 26.7 13.6 196 28.5 20.1 142
LITTLE WARM 9370 8.7 4.2 207 15.5 19.3 80
SOUTH PASS 9040 18.1 9.5 191 26.5 25.4 104
ST. LAWRENCE ALT 8620 6.9 1.2 575 20.3 14.5 140
TOGWOTEE PASS 9580 23.3 25.1 93 -M 31.9 *
TOWNSEND CREEK 8700 14.2 3.0 473 25.2 18.1 139
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Basin wide percent of average 175 108
BIGHORN BASIN
BALD MTN. 9380 19.5 20.2 97 18.3 24.5 75
BEAR TRAP MEADOW 8200 1.5 .0 * 15.0 13.4 112
BLACKWATER 9780 22.8 27.9 82 23.0 27.8 83
BONE SPRINGS DIV 9350 14.9 12.6 118 17.2 21.4 80
EVENING STAR 9200 18.9 29.9 63 27.3 33.3 82
GRAVE SPRINGS 8550 9.8 3.0 327 18.9 15.5 122
KIRWIN 9550 12.0 8.5 141 17.1 16.7 102
MARQUETTE 8760 13.2 6.4 206 18.4 17.0 108
MIDDLE POWDER 7760 10.5 6.3 167 15.1 18.4 82
OWL CREEK 8975 1.2 1.2 100 13.1 10.4 126
POWDER RIVER PASS 9480 8.0 4.6 174 17.9 18.7 96
SHELL CREEK 9580 16.4 13.7 120 18.8 19.6 96
SYLVAN LAKE 8420 11.0 16.0 69 23.8 27.9 85
SYLVAN ROAD 7120 .0 .4 0* 17.0 22.6 75
TIMBER CREEK 7950 2.8 1.2 233 15.1 13.5 112
YOUNTS PEAK 8350 9.7 11.3 86 14.1 21.2 67
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Basin wide percent of average 106 90
SHOSHONE RIVER
BLACKWATER 9780 22.8 27.9 82 23.0 27.8 83
EVENING STAR 9200 18.9 29.9 63 27.3 33.3 82
KIRWIN 9550 12.0 8.5 141 17.1 16.7 102
MARQUETTE 8760 13.2 6.4 206 18.4 17.0 108
SYLVAN LAKE 8420 11.0 16.0 69 23.8 27.9 85
SYLVAN ROAD 7120 .0 .4 0* 17.0 22.6 75
YOUNTS PEAK 8350 9.7 11.3 86 14.1 21.2 67
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Basin wide percent of average 87 85
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.5 .0 * 15.0 13.4 112
BIG GOOSE 7990 11.4 6.6 173 19.9 15.7 127
BONE SPRINGS DIV 9350 14.9 12.6 118 17.2 21.4 80
BURGESS JUNCTION 7880 12.4 6.4 194 18.3 17.9 102
CLOUD PEAK RESERVOIR 9860 19.2 11.5 167 21.8 20.7 105
DOME LAKE 8880 12.6 6.2 203 21.0 19.8 106
GRAVE SPRINGS 8550 9.8 3.0 327 18.9 15.5 122
HANSEN SAWMILL 8360 2.0 .8 250 15.8 13.3 119
MIDDLE POWDER 7760 10.5 6.3 167 15.1 18.4 82
POWDER RIVER PASS 9480 8.0 4.6 174 17.9 18.7 96
SUCKER CREEK 8880 16.4 6.8 241 23.3 20.6 113
TIE CREEK 6870 2.6 .0 * 20.0 16.4 122
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Basin wide percent of average 187 106
BELLE FOURCHE
BLIND PARK 6890 .8 .0 * 20.1 17.0 118
COLE CANYON 5910 .0 .0 100* 19.1 12.1 158
NORTH RAPID CREEK 6130 .2 .0 * 18.3 13.4 137
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Basin wide percent of average * 135
UPPER N. PLATTE RIVER
COLUMBINE 9160 10.5 6.5 162 30.6 31.6 97
DIVIDE PEAK 8880 15.1 7.6 199 32.6 26.8 122
ELK RIVER 8700 5.5 3.4 162 27.3 25.3 108
JOE WRIGHT 10120 23.6 21.0 112 31.5 33.8 93
NORTH FRENCH CREEK 10130 43.4 29.3 148 46.0 33.3 138
OLD BATTLE 10000 42.4 31.1 136 48.1 43.3 111
SAGE CREEK BASIN 7850 .0 4.4 0 18.4 15.5 119
SOUTH BRUSH CREEK 8440 6.0 3.6 167 27.9 22.9 122
TOWER 10500 43.1 48.2 89 45.5 49.0 93
WEBBER SPRINGS 9250 20.2 11.8 171 37.4 34.0 110
WILLOW CREEK PASS 9540 10.4 6.9 151 18.4 18.0 102
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Basin wide percent of average 127 109
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.9 17.3 132 30.5 30.3 101
CASPER MTN. 7900 11.2 7.2 156 21.9 23.1 95
DEADMAN HILL 10220 -M 15.0 * -M 23.9 *
DEER PARK 9700 21.9 13.8 159 28.7 30.0 96
LAPRELE CREEK 8375 .4 1.8 22 19.7 19.3 102
RENO HILL 8400 14.4 6.0 240 27.3 23.8 115
ROACH 9700 18.8 9.3 202 29.9 25.5 117
SAND LAKE 10050 39.8 31.6 126 41.6 33.2 125
SOUTH PASS 9040 18.1 9.5 191 26.5 25.4 104
WINDY PEAK 7900 .6 .6 100* 19.7 16.2 122
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Basin wide percent of average 153 108
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 20.8 20.5 101
DIVIDE PEAK 8880 15.1 7.6 199 32.6 26.8 122
OLD BATTLE 10000 42.4 31.1 136 48.1 43.3 111
SANDSTONE RS 8150 -M 1.3 * 24.0 24.2 99
WHISKEY PARK 8950 -M 20.5 * 41.4 37.0 112
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Basin wide percent of average 149* 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.4 5.2 85 13.7 18.0 76
BLIND BULL SUM 8650 18.9 21.7 87 18.4 27.4 67
EAST RIM DIVIDE 7930 .1 5.3 2 10.0 15.5 65
ELKHART PARK G.S. 9400 4.9 6.4 77 12.5 18.3 68
GROS VENTRE SUMMIT 8750 5.3 6.8 78 13.6 17.0 80
GUNSIGHT PASS 9820 11.2 -M * 16.3 -M *
KENDALL R.S. 7740 .1 .0 * 12.1 18.1 67
LOOMIS PARK 8240 .2 5.9 3 14.1 21.9 64
NEW FORK LAKE 8340 .0 .4 0* 9.3 15.3 61
POCKET CREEK 9360 7.9 -M * 15.3 -M *
SNIDER BASIN 8060 1.6 3.5 46 16.4 20.0 82
SPRING CREEK DIVIDE 9000 21.3 20.1 106 25.0 32.5 77
TRIPLE PEAK 8500 13.9 11.0 126 28.4 31.2 91
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Basin wide percent of average 82 74
LOWER GREEN RIVER
HAMS FORK 7840 .5 .0 * 15.4 16.5 93
HEWINTA 9519 3.5 1.8 194 18.0 19.7 91
HICKERSON PARK 9145 .0 .5 0* 15.8 12.0 132
HOLE-IN-ROCK 9150 .0 .4 0* 15.4 11.6 133
INDIAN CREEK 9425 20.6 19.3 107 24.3 31.8 76
KELLEY R.S. 8180 5.8 5.2 112 19.5 25.6 76
STEEL CREEK PARK 10200 20.9 15.3 137 22.7 22.5 101
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Basin wide percent of average 121 94
UPPER BEAR RIVER
BUG LAKE 7950 9.2 6.0 153 21.5 24.5 88
HAYDEN FORK 9212 1.3 3.7 35 24.9 27.7 90
KELLEY R.S. 8180 5.8 5.2 112 19.5 25.6 76
LILY LAKE 9156 7.7 3.4 226 21.1 23.4 90
MONTE CRISTO 8960 19.2 17.6 109 28.0 33.3 84
SALT RIVER SUMMIT 7760 .1 .5 20* 17.1 23.5 73
TRIAL LAKE 9992 18.6 19.0 98 23.0 32.4 71
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Basin wide percent of average 112 81
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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.