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: NOVEMBER 20 , 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 1.7 2.5 68 7.9 4.3 184
COTTONWOOD CREEK 7670 2.7 2.9 93 6.1 5.9 103
GRANITE CREEK 6770 1.3 2.0 65 6.6 3.7 178
GRASSY LAKE 7265 3.7 4.8 77 11.0 6.8 162
GROS VENTRE SUMMIT 8750 3.8 2.8 136 5.3 3.3 161
LEWIS LAKE DIVIDE 7850 5.6 4.7 119 10.8 6.8 159
PHILLIPS BENCH 8200 3.9 4.1 95 8.4 5.1 165
SALT RIVER SUMMIT 7760 .2 1.5 13 2.9 3.6 81
SNAKE RIVER STATION 6920 .8 2.4 33 7.8 4.5 173
SPRING CREEK DIVIDE 9000 2.9 4.4 66 4.4 5.3 83
THUMB DIVIDE 7980 2.1 2.6 81 6.3 3.9 162
TOGWOTEE PASS 9580 7.5 5.2 144 8.6 5.4 159
TWO OCEAN PLATEAU 9240 10.5 6.1 172 10.3 6.0 172
WILLOW CREEK 8380 3.0 5.1 59 8.5 6.9 123
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Basin wide percent of average 97 147
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 8.2 5.1 161 7.8 4.2 186
BLACK BEAR 8170 7.3 6.3 116 10.0 7.5 133
CANYON 7870 2.9 2.0 145 6.0 3.6 167
FISHER CREEK 9100 11.4 6.0 190 10.9 6.9 158
MADISON PLATEAU 7750 3.5 3.8 92 7.3 5.1 143
NORTHEAST ENTRANCE 7350 .5 1.3 38 4.8 3.0 160
PARKER PEAK 9400 7.0 4.9 143 7.7 4.1 188
SYLVAN LAKE 8420 4.0 4.4 91 8.2 5.1 161
THUMB DIVIDE 7980 2.1 2.6 81 6.3 3.9 162
TWO OCEAN PLATEAU 9240 10.5 6.1 172 10.3 6.0 172
WHISKEY CREEK 6800 1.3 2.3 57 5.9 4.3 137
WHITE MILL 8700 7.5 4.4 170 8.2 5.5 149
WOLVERINE 7650 .0 1.7 0 4.9 3.3 148
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Basin wide percent of average 130 157
WIND RIVER
BURROUGHS CREEK 8750 4.8 2.6 185 7.0 3.5 200
COLD SPRINGS 9630 .8 2.3 35 3.0 3.4 88
DEER PARK 9700 1.6 3.8 42 4.1 5.3 77
HOBBS PARK 10100 1.7 4.0 42 3.6 3.7 97
LITTLE WARM 9370 1.9 2.4 79 4.2 3.5 120
SOUTH PASS 9040 .7 3.5 20 3.0 4.4 68
ST. LAWRENCE ALT 8620 .4 1.9 21 1.8 2.9 62
TOGWOTEE PASS 9580 7.5 5.2 144 8.6 5.4 159
TOWNSEND CREEK 8700 .3 2.1 14 2.6 3.6 72
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Basin wide percent of average 71 106
BIGHORN BASIN
BALD MTN. 9380 3.8 4.7 81 4.3 4.2 102
BEAR TRAP MEADOW 8200 1.0 1.2 83 2.6 2.8 93
BLACKWATER 9780 8.5 5.7 149 7.9 5.2 152
BONE SPRINGS DIV 9350 3.5 4.4 80 4.6 4.0 115
EVENING STAR 9200 7.7 5.7 135 10.3 5.9 175
GRAVE SPRINGS 8550 1.7 2.3 74 3.2 3.0 107
KIRWIN 9550 5.0 3.2 156 6.3 3.3 191
MARQUETTE 8760 .0 2.9 0 3.9 3.5 111
MIDDLE POWDER 7760 1.6 2.7 59 2.9 4.1 71
OWL CREEK 8975 1.4 1.6 87 3.2 1.9 168
POWDER RIVER PASS 9480 2.3 2.5 92 4.4 3.2 138
SHELL CREEK 9580 5.1 4.2 121 5.8 3.5 166
SYLVAN LAKE 8420 4.0 4.4 91 8.2 5.1 161
SYLVAN ROAD 7120 .9 2.0 45 7.7 4.7 164
TIMBER CREEK 7950 .6 2.0 30 3.8 2.6 146
YOUNTS PEAK 8350 4.5 3.2 141 7.6 3.8 200
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Basin wide percent of average 98 143
SHOSHONE RIVER
BLACKWATER 9780 8.5 5.7 149 7.9 5.2 152
EVENING STAR 9200 7.7 5.7 135 10.3 5.9 175
KIRWIN 9550 5.0 3.2 156 6.3 3.3 191
MARQUETTE 8760 .0 2.9 0 3.9 3.5 111
SYLVAN LAKE 8420 4.0 4.4 91 8.2 5.1 161
SYLVAN ROAD 7120 .9 2.0 45 7.7 4.7 164
YOUNTS PEAK 8350 4.5 3.2 141 7.6 3.8 200
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Basin wide percent of average 113 165
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.0 1.2 83 2.6 2.8 93
BIG GOOSE 7990 1.3 1.7 76 4.6 2.7 170
BONE SPRINGS DIV 9350 3.5 4.4 80 4.6 4.0 115
BURGESS JUNCTION 7880 1.6 2.8 57 3.9 3.5 111
CLOUD PEAK RESERVOIR 9860 3.5 2.9 121 6.2 4.1 151
DOME LAKE 8880 2.2 3.4 65 5.2 4.0 130
GRAVE SPRINGS 8550 1.7 2.3 74 3.2 3.0 107
HANSEN SAWMILL 8360 -M 1.5 * -M 2.8 *
MIDDLE POWDER 7760 1.6 2.7 59 2.9 4.1 71
POWDER RIVER PASS 9480 2.3 2.5 92 4.4 3.2 138
SUCKER CREEK 8880 2.4 2.5 96 4.1 3.8 108
TIE CREEK 6870 .1 1.2 8 3.4 3.3 103
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Basin wide percent of average 77 117
BELLE FOURCHE
BLIND PARK 6890 .6 1.6 37 1.7 3.8 45
COLE CANYON 5910 .0 1.6 0 1.3 2.6 50
NORTH RAPID CREEK 6130 .2 1.2 17 1.3 3.4 38
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Basin wide percent of average 18 44
UPPER N. PLATTE RIVER
COLUMBINE 9160 .3 3.2 9 4.3 4.6 93
DIVIDE PEAK 8880 2.3 3.6 64 3.6 4.7 77
ELK RIVER 8700 .6 1.9 32 3.8 3.9 97
JOE WRIGHT 10120 3.9 5.0 78 5.9 6.1 97
NORTH FRENCH CREEK 10130 4.6 5.9 78 6.0 5.9 102
OLD BATTLE 10000 3.4 6.5 52 5.5 6.8 81
SAGE CREEK BASIN 7850 .1 2.1 5 2.9 2.8 104
SOUTH BRUSH CREEK 8440 1.2 2.0 60 4.2 4.3 98
TOWER 10500 3.6 8.9 40 5.7 7.8 73
WEBBER SPRINGS 9250 1.9 4.6 41 4.3 5.8 74
WILLOW CREEK PASS 9540 2.9 2.7 107 3.6 3.5 103
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Basin wide percent of average 53 89
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.2 4.3 51 3.6 4.7 77
CASPER MTN. 7900 1.1 3.5 31 4.0 4.3 93
DEADMAN HILL 10220 4.0 4.0 100 3.6 4.2 86
DEER PARK 9700 1.6 3.8 42 4.1 5.3 77
LAPRELE CREEK 8375 .0 2.3 0 2.5 3.4 74
RENO HILL 8400 2.1 3.2 66 4.3 4.2 102
ROACH 9700 2.0 3.0 67 3.6 4.1 88
SAND LAKE 10050 4.9 6.8 72 5.8 5.5 105
SOUTH PASS 9040 .7 3.5 20 3.0 4.4 68
WINDY PEAK 7900 .5 1.6 31 2.2 2.9 76
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Basin wide percent of average 53 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 1.3 0 2.5 3.4 74
DIVIDE PEAK 8880 2.3 3.6 64 3.6 4.7 77
OLD BATTLE 10000 3.4 6.5 52 5.5 6.8 81
SANDSTONE RS 8150 .4 1.5 27 2.8 4.3 65
WHISKEY PARK 8950 1.7 4.3 40 4.8 5.6 86
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Basin wide percent of average 45 77
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.8 2.8 64 2.8 3.3 85
BLIND BULL SUM 8650 3.7 4.6 80 4.5 4.5 100
EAST RIM DIVIDE 7930 .2 2.0 10 2.6 2.6 100
ELKHART PARK G.S. 9400 2.0 2.3 87 3.4 3.4 100
GROS VENTRE SUMMIT 8750 3.8 2.8 136 5.3 3.3 161
KENDALL R.S. 7740 1.4 2.0 70 3.8 3.0 127
LOOMIS PARK 8240 1.8 2.8 64 3.7 3.6 103
NEW FORK LAKE 8340 1.4 1.8 78 2.9 3.0 97
SNIDER BASIN 8060 .5 2.3 22 2.5 3.3 76
SPRING CREEK DIVIDE 9000 2.9 4.4 66 4.4 5.3 83
TRIPLE PEAK 8500 3.3 4.0 82 6.0 4.7 128
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Basin wide percent of average 72 105
LOWER GREEN RIVER
HAMS FORK 7840 .1 1.5 7 1.9 2.7 70
HEWINTA 9519 -M 1.6 * 4.6 3.9 118
HICKERSON PARK 9145 .1 1.1 9 3.1 2.7 115
HOLE-IN-ROCK 9150 .4 1.1 36 3.7 2.5 148
INDIAN CREEK 9425 2.3 4.4 52 3.5 5.1 69
KELLEY R.S. 8180 1.0 2.8 36 3.4 4.2 81
STEEL CREEK PARK 10200 1.8 3.0 60 5.0 4.1 122
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Basin wide percent of average 41 100
UPPER BEAR RIVER
BUG LAKE 7950 -M 2.8 * 1.8 4.3 42
HAYDEN FORK 9212 .3 2.0 15 3.7 4.6 80
KELLEY R.S. 8180 1.0 2.8 36 3.4 4.2 81
LILY LAKE 9156 .2 2.1 10 3.9 4.4 89
MONTE CRISTO 8960 1.1 3.5 31 3.9 5.3 74
SALT RIVER SUMMIT 7760 .2 1.5 13 2.9 3.6 81
TRIAL LAKE 9992 1.7 4.0 42 3.2 5.1 63
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Basin wide percent of average 28 72
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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.