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 29 , 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 .5 0* 17.6 26.8 66
COTTONWOOD CREEK 7670 8.1 7.3 111 29.8 35.4 84
GRAND TARGHEE 9260 46.3 -M * 38.2 -M *
GRANITE CREEK 6770 .0 2.5 0 16.9 24.6 69
GRASSY LAKE 7265 11.6 17.4 67 33.7 44.6 76
GROS VENTRE SUMMIT 8750 2.4 5.3 45 13.7 17.4 79
GUNSIGHT PASS 9820 10.1 -M * 16.5 -M *
LEWIS LAKE DIVIDE 7850 12.3 20.9 59 28.2 45.0 63
PHILLIPS BENCH 8200 10.6 16.5 64 25.7 36.2 71
SALT RIVER SUMMIT 7760 .0 .0 100* 17.3 23.8 73
SNAKE RIVER STATION 6920 .0 .0 100* 21.2 28.1 75
SPRING CREEK DIVIDE 9000 19.2 17.6 109 25.1 32.8 77
THUMB DIVIDE 7980 .2 3.8 5 17.8 24.5 73
TOGWOTEE PASS 9580 22.4 23.7 95 -M 32.3 *
TWO OCEAN PLATEAU 9240 24.7 26.9 92 24.1 35.8 67
WILLOW CREEK 8380 17.7 17.2 103 38.6 42.1 92
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Basin wide percent of average 81 74
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 16.2 22.1 73 19.1 26.6 72
BLACK BEAR 8170 22.6 29.4 77 34.5 49.8 69
CANYON 7870 .8 2.6 31 15.6 20.2 77
FISHER CREEK 9100 25.8 31.8 81 31.8 46.1 69
MADISON PLATEAU 7750 10.4 11.6 90 27.2 33.8 80
NORTHEAST ENTRANCE 7350 .0 .7 0* 13.4 17.2 78
PARKER PEAK 9400 15.8 20.4 77 18.4 22.7 81
SYLVAN LAKE 8420 10.3 14.0 74 24.6 28.4 87
THUMB DIVIDE 7980 .2 3.8 5 17.8 24.5 73
TWO OCEAN PLATEAU 9240 24.7 26.9 92 24.1 35.8 67
WHISKEY CREEK 6800 .0 2.7 0 17.6 26.9 65
WHITE MILL 8700 15.7 19.9 79 22.2 34.7 64
WOLVERINE 7650 .0 .2 0* 10.3 17.9 58
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Basin wide percent of average 77 72
WIND RIVER
BURROUGHS CREEK 8750 6.9 5.1 135 -M 22.2 *
COLD SPRINGS 9630 5.1 1.2 425 19.2 16.7 115
DEER PARK 9700 19.4 11.3 172 29.0 30.5 95
HOBBS PARK 10100 24.9 11.8 211 28.6 20.6 139
LITTLE WARM 9370 5.6 3.0 187 15.6 19.7 79
SOUTH PASS 9040 14.6 8.3 176 26.7 25.7 104
ST. LAWRENCE ALT 8620 -M .9 * 20.3 14.9 136
TOGWOTEE PASS 9580 22.4 23.7 95 -M 32.3 *
TOWNSEND CREEK 8700 10.2 2.4 425 25.4 18.5 137
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Basin wide percent of average 163 112
BIGHORN BASIN
BALD MTN. 9380 18.6 18.6 100 19.3 24.9 78
BEAR TRAP MEADOW 8200 .2 .0 * 15.0 13.8 109
BLACKWATER 9780 21.6 26.7 81 23.3 28.4 82
BONE SPRINGS DIV 9350 13.0 10.8 120 18.3 21.9 84
EVENING STAR 9200 17.9 28.5 63 27.8 33.8 82
GRAVE SPRINGS 8550 6.7 2.5 268 19.0 15.8 120
KIRWIN 9550 9.7 7.1 137 17.2 17.1 101
MARQUETTE 8760 10.8 5.5 196 18.4 17.5 105
MIDDLE POWDER 7760 6.5 4.5 144 15.2 18.7 81
OWL CREEK 8975 .1 .8 13 13.2 10.7 123
POWDER RIVER PASS 9480 5.6 3.4 165 18.3 19.2 95
SHELL CREEK 9580 14.9 12.4 120 19.0 20.1 95
SYLVAN LAKE 8420 10.3 14.0 74 24.6 28.4 87
SYLVAN ROAD 7120 .0 .3 0* 17.5 23.0 76
TIMBER CREEK 7950 .6 1.0 60 15.2 14.0 109
YOUNTS PEAK 8350 7.2 9.5 76 14.2 21.7 65
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Basin wide percent of average 99 90
SHOSHONE RIVER
BLACKWATER 9780 21.6 26.7 81 23.3 28.4 82
EVENING STAR 9200 17.9 28.5 63 27.8 33.8 82
KIRWIN 9550 9.7 7.1 137 17.2 17.1 101
MARQUETTE 8760 10.8 5.5 196 18.4 17.5 105
SYLVAN LAKE 8420 10.3 14.0 74 24.6 28.4 87
SYLVAN ROAD 7120 .0 .3 0* 17.5 23.0 76
YOUNTS PEAK 8350 7.2 9.5 76 14.2 21.7 65
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Basin wide percent of average 85 84
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .2 .0 * 15.0 13.8 109
BIG GOOSE 7990 7.9 4.9 161 20.1 16.1 125
BONE SPRINGS DIV 9350 13.0 10.8 120 18.3 21.9 84
BURGESS JUNCTION 7880 8.8 4.7 187 18.3 18.2 101
CLOUD PEAK RESERVOIR 9860 16.0 9.9 162 22.3 21.2 105
DOME LAKE 8880 9.2 4.5 204 21.4 20.2 106
GRAVE SPRINGS 8550 6.7 2.5 268 19.0 15.8 120
HANSEN SAWMILL 8360 .2 .5 40* 16.0 13.7 117
MIDDLE POWDER 7760 6.5 4.5 144 15.2 18.7 81
POWDER RIVER PASS 9480 5.6 3.4 165 18.3 19.2 95
SUCKER CREEK 8880 13.6 5.2 262 23.5 21.1 111
TIE CREEK 6870 .0 .0 100* 20.1 16.8 120
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Basin wide percent of average 172 105
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * 20.3 17.4 117
COLE CANYON 5910 .1 .0 * 20.3 12.5 162
NORTH RAPID CREEK 6130 .1 .0 * 18.6 13.7 136
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Basin wide percent of average * 136
UPPER N. PLATTE RIVER
COLUMBINE 9160 4.4 4.0 110 31.1 31.9 97
DIVIDE PEAK 8880 8.4 5.5 153 32.6 27.2 120
ELK RIVER 8700 .1 2.2 5 27.4 25.7 107
JOE WRIGHT 10120 20.0 19.2 104 31.6 34.4 92
NORTH FRENCH CREEK 10130 40.3 26.8 150 46.1 33.8 136
OLD BATTLE 10000 39.9 28.5 140 48.4 43.8 111
SAGE CREEK BASIN 7850 .0 3.2 0 18.3 15.8 116
SOUTH BRUSH CREEK 8440 .5 2.5 20 28.3 23.3 121
TOWER 10500 39.1 45.7 86 45.8 49.5 93
WEBBER SPRINGS 9250 17.2 9.0 191 37.4 34.3 109
WILLOW CREEK PASS 9540 6.8 4.9 139 18.4 18.4 100
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Basin wide percent of average 117 108
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.7 14.4 130 30.7 30.7 100
CASPER MTN. 7900 7.4 5.6 132 21.8 23.5 93
DEADMAN HILL 10220 23.4 13.2 177 26.9 24.3 111
DEER PARK 9700 19.4 11.3 172 29.0 30.5 95
LAPRELE CREEK 8375 .0 1.2 0 19.6 19.7 99
RENO HILL 8400 9.7 4.6 211 27.8 24.3 114
ROACH 9700 13.1 7.6 172 29.9 26.0 115
SAND LAKE 10050 37.2 28.9 129 42.0 33.8 124
SOUTH PASS 9040 14.6 8.3 176 26.7 25.7 104
WINDY PEAK 7900 .2 .3 67* 20.5 16.6 123
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Basin wide percent of average 151 108
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 20.9 20.7 101
DIVIDE PEAK 8880 8.4 5.5 153 32.6 27.2 120
OLD BATTLE 10000 39.9 28.5 140 48.4 43.8 111
SANDSTONE RS 8150 -M .6 * 23.7 24.5 97
WHISKEY PARK 8950 21.5 17.1 126 41.4 37.4 111
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Basin wide percent of average 137 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .5 3.3 15 13.8 18.3 75
BLIND BULL SUM 8650 17.8 19.9 89 18.5 27.8 67
EAST RIM DIVIDE 7930 .1 3.4 3 10.1 15.8 64
ELKHART PARK G.S. 9400 1.6 4.8 33 12.5 18.7 67
GROS VENTRE SUMMIT 8750 2.4 5.3 45 13.7 17.4 79
GUNSIGHT PASS 9820 10.1 -M * 16.5 -M *
KENDALL R.S. 7740 .1 .0 * 12.1 18.4 66
LOOMIS PARK 8240 .2 4.2 5 14.0 22.2 63
NEW FORK LAKE 8340 .0 .0 100* 10.4 15.6 67
POCKET CREEK 9360 5.4 -M * 15.4 -M *
SNIDER BASIN 8060 .1 1.5 7 16.4 20.2 81
SPRING CREEK DIVIDE 9000 19.2 17.6 109 25.1 32.8 77
TRIPLE PEAK 8500 10.6 7.9 134 28.7 31.6 91
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Basin wide percent of average 77 73
LOWER GREEN RIVER
HAMS FORK 7840 .3 .0 * 15.4 16.7 92
HEWINTA 9519 .0 1.1 0* 18.1 20.0 91
HICKERSON PARK 9145 .0 .2 0* 15.9 12.3 129
HOLE-IN-ROCK 9150 .0 .1 0* 15.4 12.0 128
INDIAN CREEK 9425 18.9 17.1 111 24.5 32.2 76
KELLEY R.S. 8180 3.5 3.3 106 19.7 25.9 76
STEEL CREEK PARK 10200 19.8 13.6 146 22.7 22.9 99
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Basin wide percent of average 120* 93
UPPER BEAR RIVER
BUG LAKE 7950 6.3 4.1 154 21.6 24.8 87
HAYDEN FORK 9212 .1 2.4 4 24.9 28.1 89
KELLEY R.S. 8180 3.5 3.3 106 19.7 25.9 76
LILY LAKE 9156 2.6 2.3 113 21.0 23.8 88
MONTE CRISTO 8960 17.5 15.1 116 28.1 33.7 83
SALT RIVER SUMMIT 7760 .0 .0 100* 17.3 23.8 73
TRIAL LAKE 9992 15.5 16.8 92 23.2 32.9 71
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Basin wide percent of average 103 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.