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 THURSDAY: NOVEMBER 20 , 2008
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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 .7 2.6 27 3.5 4.4 80
COTTONWOOD CREEK 7670 3.6 3.0 120 6.7 6.1 110
GRAND TARGHEE 9260 6.5 -M * 8.9 -M *
GRANITE CREEK 6770 .5 2.1 24 4.8 3.9 123
GRASSY LAKE 7265 3.5 5.0 70 7.6 7.1 107
GROS VENTRE SUMMIT 8750 2.6 2.9 90 3.9 3.4 115
GUNSIGHT PASS 9820 2.2 -M * 3.5 -M *
LEWIS LAKE DIVIDE 7850 4.4 5.0 88 7.9 7.1 111
PHILLIPS BENCH 8200 2.6 4.3 60 5.4 5.3 102
SALT RIVER SUMMIT 7760 1.0 1.6 62 3.2 3.7 86
SNAKE RIVER STATION 6920 .7 2.5 28 4.1 4.7 87
SPRING CREEK DIVIDE 9000 3.5 4.6 76 5.4 5.4 100
THUMB DIVIDE 7980 2.0 2.7 74 5.1 4.0 127
TOGWOTEE PASS 9580 5.8 5.3 109 6.7 5.5 122
TWO OCEAN PLATEAU 9240 7.0 6.3 111 5.4 6.1 89
WILLOW CREEK 8380 3.5 5.3 66 7.9 7.1 111
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Basin wide percent of average 78 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 4.1 5.2 79 3.9 4.3 91
BLACK BEAR 8170 5.9 6.6 89 9.1 7.8 117
CANYON 7870 1.8 2.1 86 2.9 3.7 78
FISHER CREEK 9100 5.7 6.3 90 6.8 7.2 94
MADISON PLATEAU 7750 2.5 3.9 64 5.1 5.2 98
NORTHEAST ENTRANCE 7350 .0 1.4 0 3.3 3.0 110
PARKER PEAK 9400 4.6 5.0 92 3.8 4.2 90
SYLVAN LAKE 8420 2.8 4.5 62 4.9 5.2 94
THUMB DIVIDE 7980 2.0 2.7 74 5.1 4.0 127
TWO OCEAN PLATEAU 9240 7.0 6.3 111 5.4 6.1 89
WHISKEY CREEK 6800 1.5 2.4 62 4.4 4.4 100
WHITE MILL 8700 4.3 4.6 93 5.2 5.6 93
WOLVERINE 7650 .0 1.8 0 2.4 3.4 71
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Basin wide percent of average 80 97
WIND RIVER
BURROUGHS CREEK 8750 3.0 2.7 111 3.9 3.6 108
COLD SPRINGS 9630 1.8 2.4 75 3.4 3.4 100
DEER PARK 9700 3.0 4.0 75 4.8 5.5 87
HOBBS PARK 10100 3.2 4.1 78 3.7 3.8 97
LITTLE WARM 9370 2.7 2.5 108 3.9 3.5 111
SOUTH PASS 9040 2.9 3.6 81 4.9 4.5 109
ST. LAWRENCE ALT 8620 .5 1.9 26 2.7 2.9 93
TOGWOTEE PASS 9580 5.8 5.3 109 6.7 5.5 122
TOWNSEND CREEK 8700 1.9 2.2 86 3.7 3.7 100
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Basin wide percent of average 86 104
BIGHORN BASIN
BALD MTN. 9380 6.1 4.8 127 5.9 4.2 140
BEAR TRAP MEADOW 8200 .9 1.3 69 2.6 2.9 90
BLACKWATER 9780 4.1 5.9 69 4.2 5.4 78
BONE SPRINGS DIV 9350 4.8 4.5 107 4.6 4.1 112
EVENING STAR 9200 4.3 5.9 73 6.1 6.1 100
GRAVE SPRINGS 8550 1.0 2.3 43 2.8 3.1 90
KIRWIN 9550 3.2 3.3 97 3.5 3.3 106
MARQUETTE 8760 1.3 3.0 43 2.8 3.5 80
MIDDLE POWDER 7760 -M 2.8 * -M 4.2 *
OWL CREEK 8975 2.4 1.6 150 2.7 1.9 142
POWDER RIVER PASS 9480 2.9 2.5 116 3.9 3.3 118
SHELL CREEK 9580 5.3 4.3 123 5.3 3.6 147
SYLVAN LAKE 8420 2.8 4.5 62 4.9 5.2 94
SYLVAN ROAD 7120 1.2 2.1 57 3.3 4.8 69
TIMBER CREEK 7950 1.5 2.0 75 3.6 2.6 138
YOUNTS PEAK 8350 3.0 3.3 91 3.8 3.9 97
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Basin wide percent of average 87 104
SHOSHONE RIVER
BLACKWATER 9780 4.1 5.9 69 4.2 5.4 78
EVENING STAR 9200 4.3 5.9 73 6.1 6.1 100
KIRWIN 9550 3.2 3.3 97 3.5 3.3 106
MARQUETTE 8760 1.3 3.0 43 2.8 3.5 80
SYLVAN LAKE 8420 2.8 4.5 62 4.9 5.2 94
SYLVAN ROAD 7120 1.2 2.1 57 3.3 4.8 69
YOUNTS PEAK 8350 3.0 3.3 91 3.8 3.9 97
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Basin wide percent of average 71 89
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .9 1.3 69 2.6 2.9 90
BIG GOOSE 7990 1.0 1.7 59 3.3 2.7 122
BONE SPRINGS DIV 9350 4.8 4.5 107 4.6 4.1 112
BURGESS JUNCTION 7880 2.4 2.8 86 3.9 3.5 111
CLOUD PEAK RESERVOIR 9860 4.1 3.0 137 5.3 4.2 126
DOME LAKE 8880 3.1 3.5 89 4.4 4.1 107
GRAVE SPRINGS 8550 1.0 2.3 43 2.8 3.1 90
HANSEN SAWMILL 8360 .6 1.5 40 3.3 2.8 118
MIDDLE POWDER 7760 -M 2.8 * -M 4.2 *
POWDER RIVER PASS 9480 2.9 2.5 116 3.9 3.3 118
SUCKER CREEK 8880 3.5 2.6 135 5.1 3.8 134
TIE CREEK 6870 .0 1.1 0 4.8 3.3 145
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Basin wide percent of average 91 116
BELLE FOURCHE
BLIND PARK 6890 3.3 1.6 206 5.7 3.9 146
COLE CANYON 5910 1.8 1.6 112 5.2 2.7 193
NORTH RAPID CREEK 6130 3.8 1.2 317 5.7 3.4 168
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Basin wide percent of average 202 166
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.8 3.4 53 3.1 4.8 65
DIVIDE PEAK 8880 1.6 3.7 43 4.2 4.9 86
ELK RIVER 8700 .6 2.0 30 3.2 4.1 78
JOE WRIGHT 10120 4.1 5.1 80 5.8 6.2 94
NORTH FRENCH CREEK 10130 5.0 6.0 83 5.4 6.0 90
OLD BATTLE 10000 4.3 6.7 64 6.1 7.0 87
SAGE CREEK BASIN 7850 .3 2.1 14 2.2 2.8 79
SOUTH BRUSH CREEK 8440 1.7 2.0 85 3.5 4.3 81
TOWER 10500 5.1 9.2 55 6.3 8.1 78
WEBBER SPRINGS 9250 2.3 4.8 48 4.5 5.9 76
WILLOW CREEK PASS 9540 2.2 2.8 79 2.6 3.5 74
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Basin wide percent of average 61 81
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.5 4.5 56 3.2 4.8 67
CASPER MTN. 7900 1.0 3.6 28 3.7 4.3 86
DEADMAN HILL 10220 2.8 4.1 68 2.8 4.3 65
DEER PARK 9700 3.0 4.0 75 4.8 5.5 87
LAPRELE CREEK 8375 .7 2.4 29 1.6 3.5 46
RENO HILL 8400 1.1 3.3 33 2.6 4.2 62
ROACH 9700 2.0 3.1 65 3.0 4.2 71
SAND LAKE 10050 4.8 7.0 69 4.5 5.6 80
SOUTH PASS 9040 2.9 3.6 81 4.9 4.5 109
WINDY PEAK 7900 1.0 1.7 59 1.5 3.0 50
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Basin wide percent of average 58 74
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .5 1.3 38 3.2 3.5 91
DIVIDE PEAK 8880 1.6 3.7 43 4.2 4.9 86
OLD BATTLE 10000 4.3 6.7 64 6.1 7.0 87
SANDSTONE RS 8150 1.6 1.6 100 3.0 4.4 68
WHISKEY PARK 8950 2.4 4.4 55 4.8 5.8 83
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Basin wide percent of average 59 83
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.9 2.9 66 2.6 3.4 76
BLIND BULL SUM 8650 4.1 4.8 85 4.7 4.7 100
EAST RIM DIVIDE 7930 .5 2.1 24 3.3 2.7 122
ELKHART PARK G.S. 9400 2.5 2.4 104 4.1 3.5 117
GROS VENTRE SUMMIT 8750 2.6 2.9 90 3.9 3.4 115
GUNSIGHT PASS 9820 2.2 -M * 3.5 -M *
KENDALL R.S. 7740 1.0 2.1 48 3.6 3.1 116
LOOMIS PARK 8240 1.8 2.9 62 4.4 3.7 119
NEW FORK LAKE 8340 1.7 1.8 94 3.3 3.1 106
SNIDER BASIN 8060 1.1 2.4 46 2.9 3.4 85
SPRING CREEK DIVIDE 9000 3.5 4.6 76 5.4 5.4 100
TRIPLE PEAK 8500 3.2 4.2 76 4.8 4.8 100
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Basin wide percent of average 72 104
LOWER GREEN RIVER
HAMS FORK 7840 .0 1.6 0 2.7 2.7 100
HEWINTA 9519 .0 1.6 0 2.6 4.0 65
HICKERSON PARK 9145 .0 1.1 0 2.0 2.8 71
HOLE-IN-ROCK 9150 .4 1.1 36 2.5 2.6 96
INDIAN CREEK 9425 3.3 4.5 73 4.6 5.2 88
KELLEY R.S. 8180 3.3 2.9 114 3.7 4.3 86
STEEL CREEK PARK 10200 .5 3.1 16 3.4 4.2 81
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Basin wide percent of average 47 83
UPPER BEAR RIVER
BUG LAKE 7950 1.1 2.9 38 3.1 4.4 70
HAYDEN FORK 9212 1.3 2.1 62 4.0 4.7 85
KELLEY R.S. 8180 3.3 2.9 114 3.7 4.3 86
LILY LAKE 9156 1.4 2.1 67 3.5 4.5 78
MONTE CRISTO 8960 2.1 3.6 58 4.6 5.4 85
SALT RIVER SUMMIT 7760 1.0 1.6 62 3.2 3.7 86
TRIAL LAKE 9992 2.9 4.1 71 4.2 5.2 81
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Basin wide percent of average 68 82
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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 1961-90.
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.