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 WEDNESDAY: NOVEMBER 21 , 2007
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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 1.8 2.6 69 8.0 4.4 182
COTTONWOOD CREEK 7670 2.7 3.0 90 6.3 6.1 103
GRANITE CREEK 6770 1.3 2.1 62 6.5 3.9 167
GRASSY LAKE 7265 3.8 5.0 76 11.2 7.1 158
GROS VENTRE SUMMIT 8750 3.8 2.9 131 5.5 3.4 162
LEWIS LAKE DIVIDE 7850 5.5 5.0 110 10.6 7.1 149
PHILLIPS BENCH 8200 3.9 4.3 91 8.4 5.3 158
SALT RIVER SUMMIT 7760 .1 1.6 6 2.7 3.7 73
SNAKE RIVER STATION 6920 .6 2.5 24 8.0 4.7 170
SPRING CREEK DIVIDE 9000 2.8 4.6 61 4.3 5.4 80
THUMB DIVIDE 7980 2.1 2.7 78 6.3 4.0 158
TOGWOTEE PASS 9580 7.4 5.3 140 8.5 5.5 155
TWO OCEAN PLATEAU 9240 10.9 6.3 173 10.6 6.1 174
WILLOW CREEK 8380 3.2 5.3 60 8.7 7.1 123
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Basin wide percent of average 94 143
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 8.1 5.2 156 7.8 4.3 181
BLACK BEAR 8170 7.2 6.6 109 10.2 7.8 131
CANYON 7870 3.1 2.1 148 6.1 3.7 165
FISHER CREEK 9100 11.6 6.3 184 11.1 7.2 154
MADISON PLATEAU 7750 3.7 3.9 95 7.4 5.2 142
NORTHEAST ENTRANCE 7350 .4 1.4 29 4.8 3.0 160
PARKER PEAK 9400 7.2 5.0 144 7.7 4.2 183
SYLVAN LAKE 8420 4.1 4.5 91 8.4 5.2 162
THUMB DIVIDE 7980 2.1 2.7 78 6.3 4.0 158
TWO OCEAN PLATEAU 9240 10.9 6.3 173 10.6 6.1 174
WHISKEY CREEK 6800 1.4 2.4 58 6.2 4.4 141
WHITE MILL 8700 7.6 4.6 165 8.3 5.6 148
WOLVERINE 7650 .3 1.8 17 4.9 3.4 144
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Basin wide percent of average 128 156
WIND RIVER
BURROUGHS CREEK 8750 4.9 2.7 181 7.2 3.6 200
COLD SPRINGS 9630 .7 2.4 29 3.2 3.4 94
DEER PARK 9700 1.6 4.0 40 4.2 5.5 76
HOBBS PARK 10100 1.6 4.1 39 3.4 3.8 89
LITTLE WARM 9370 2.0 2.5 80 4.2 3.5 120
SOUTH PASS 9040 .5 3.6 14 3.3 4.5 73
ST. LAWRENCE ALT 8620 .2 1.9 11 1.9 2.9 66
TOGWOTEE PASS 9580 7.4 5.3 140 8.5 5.5 155
TOWNSEND CREEK 8700 .2 2.2 9 3.0 3.7 81
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Basin wide percent of average 67 107
BIGHORN BASIN
BALD MTN. 9380 3.9 4.8 81 4.0 4.2 95
BEAR TRAP MEADOW 8200 1.0 1.3 77 2.6 2.9 90
BLACKWATER 9780 8.6 5.9 146 7.9 5.4 146
BONE SPRINGS DIV 9350 3.7 4.5 82 4.8 4.1 117
EVENING STAR 9200 7.9 5.9 134 10.4 6.1 170
GRAVE SPRINGS 8550 1.6 2.3 70 3.3 3.1 106
KIRWIN 9550 4.9 3.3 148 6.0 3.3 182
MARQUETTE 8760 .0 3.0 0 3.8 3.5 109
MIDDLE POWDER 7760 1.6 2.8 57 3.1 4.2 74
OWL CREEK 8975 1.3 1.6 81 3.3 1.9 174
POWDER RIVER PASS 9480 2.4 2.5 96 4.3 3.3 130
SHELL CREEK 9580 5.4 4.3 126 6.0 3.6 167
SYLVAN LAKE 8420 4.1 4.5 91 8.4 5.2 162
SYLVAN ROAD 7120 1.1 2.1 52 7.9 4.8 165
TIMBER CREEK 7950 .4 2.0 20 4.1 2.6 158
YOUNTS PEAK 8350 4.4 3.3 133 7.5 3.9 192
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Basin wide percent of average 97 141
SHOSHONE RIVER
BLACKWATER 9780 8.6 5.9 146 7.9 5.4 146
EVENING STAR 9200 7.9 5.9 134 10.4 6.1 170
KIRWIN 9550 4.9 3.3 148 6.0 3.3 182
MARQUETTE 8760 .0 3.0 0 3.8 3.5 109
SYLVAN LAKE 8420 4.1 4.5 91 8.4 5.2 162
SYLVAN ROAD 7120 1.1 2.1 52 7.9 4.8 165
YOUNTS PEAK 8350 4.4 3.3 133 7.5 3.9 192
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Basin wide percent of average 111 161
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.0 1.3 77 2.6 2.9 90
BIG GOOSE 7990 1.3 1.7 76 4.7 2.7 174
BONE SPRINGS DIV 9350 3.7 4.5 82 4.8 4.1 117
BURGESS JUNCTION 7880 1.7 2.8 61 4.2 3.5 120
CLOUD PEAK RESERVOIR 9860 3.4 3.0 113 5.7 4.2 136
DOME LAKE 8880 2.4 3.5 69 5.5 4.1 134
GRAVE SPRINGS 8550 1.6 2.3 70 3.3 3.1 106
HANSEN SAWMILL 8360 -M 1.5 * -M 2.8 *
MIDDLE POWDER 7760 1.6 2.8 57 3.1 4.2 74
POWDER RIVER PASS 9480 2.4 2.5 96 4.3 3.3 130
SUCKER CREEK 8880 2.5 2.6 96 4.1 3.8 108
TIE CREEK 6870 .3 1.1 27 3.8 3.3 115
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Basin wide percent of average 78 118
BELLE FOURCHE
BLIND PARK 6890 .7 1.6 44 1.9 3.9 49
COLE CANYON 5910 .0 1.6 0 1.7 2.7 63
NORTH RAPID CREEK 6130 .1 1.2 8 1.3 3.4 38
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Basin wide percent of average 18 49
UPPER N. PLATTE RIVER
COLUMBINE 9160 .4 3.4 12 4.3 4.8 90
DIVIDE PEAK 8880 2.2 3.7 59 3.6 4.9 73
ELK RIVER 8700 .7 2.0 35 3.5 4.1 85
JOE WRIGHT 10120 4.6 5.1 90 6.1 6.2 98
NORTH FRENCH CREEK 10130 4.7 6.0 78 6.1 6.0 102
OLD BATTLE 10000 3.4 6.7 51 5.2 7.0 74
SAGE CREEK BASIN 7850 .0 2.1 0 2.9 2.8 104
SOUTH BRUSH CREEK 8440 1.3 2.0 65 4.3 4.3 100
TOWER 10500 3.8 9.2 41 5.6 8.1 69
WEBBER SPRINGS 9250 1.8 4.8 38 4.4 5.9 75
WILLOW CREEK PASS 9540 3.3 2.8 118 3.7 3.5 106
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Basin wide percent of average 55 86
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.1 4.5 47 3.8 4.8 79
CASPER MTN. 7900 .8 3.6 22 3.9 4.3 91
DEADMAN HILL 10220 4.5 4.1 110 3.9 4.3 91
DEER PARK 9700 1.6 4.0 40 4.2 5.5 76
LAPRELE CREEK 8375 .0 2.4 0 2.5 3.5 71
RENO HILL 8400 2.0 3.3 61 4.0 4.2 95
ROACH 9700 2.2 3.1 71 3.8 4.2 90
SAND LAKE 10050 4.9 7.0 70 5.7 5.6 102
SOUTH PASS 9040 .5 3.6 14 3.3 4.5 73
WINDY PEAK 7900 .4 1.7 24 2.0 3.0 67
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Basin wide percent of average 51 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 1.3 0 2.4 3.5 69
DIVIDE PEAK 8880 2.2 3.7 59 3.6 4.9 73
OLD BATTLE 10000 3.4 6.7 51 5.2 7.0 74
SANDSTONE RS 8150 .0 1.6 0 2.7 4.4 61
WHISKEY PARK 8950 1.6 4.4 36 4.8 5.8 83
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Basin wide percent of average 41 73
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.5 2.9 52 2.5 3.4 74
BLIND BULL SUM 8650 3.6 4.8 75 4.5 4.7 96
EAST RIM DIVIDE 7930 .0 2.1 0 2.5 2.7 93
ELKHART PARK G.S. 9400 1.7 2.4 71 3.1 3.5 89
GROS VENTRE SUMMIT 8750 3.8 2.9 131 5.5 3.4 162
KENDALL R.S. 7740 1.2 2.1 57 3.7 3.1 119
LOOMIS PARK 8240 1.6 2.9 55 3.6 3.7 97
NEW FORK LAKE 8340 1.2 1.8 67 2.5 3.1 81
SNIDER BASIN 8060 .3 2.4 12 2.2 3.4 65
SPRING CREEK DIVIDE 9000 2.8 4.6 61 4.3 5.4 80
TRIPLE PEAK 8500 3.3 4.2 79 6.0 4.8 125
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Basin wide percent of average 63 98
LOWER GREEN RIVER
HAMS FORK 7840 .0 1.6 0 1.8 2.7 67
HEWINTA 9519 -M 1.6 * 4.7 4.0 118
HICKERSON PARK 9145 .4 1.1 36 2.9 2.8 104
HOLE-IN-ROCK 9150 .1 1.1 9 3.6 2.6 138
INDIAN CREEK 9425 2.0 4.5 44 3.4 5.2 65
KELLEY R.S. 8180 .8 2.9 28 3.3 4.3 77
STEEL CREEK PARK 10200 1.4 3.1 45 5.2 4.2 124
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Basin wide percent of average 33 97
UPPER BEAR RIVER
BUG LAKE 7950 -M 2.9 * 1.3 4.4 30
HAYDEN FORK 9212 .3 2.1 14 3.8 4.7 81
KELLEY R.S. 8180 .8 2.9 28 3.3 4.3 77
LILY LAKE 9156 .5 2.1 24 4.0 4.5 89
MONTE CRISTO 8960 1.0 3.6 28 3.6 5.4 67
SALT RIVER SUMMIT 7760 .1 1.6 6 2.7 3.7 73
TRIAL LAKE 9992 1.4 4.1 34 3.2 5.2 62
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Basin wide percent of average 25 68
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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.