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: DECEMBER 4 , 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 3.5 4.4 80 9.8 6.4 153
COTTONWOOD CREEK 7670 3.5 5.0 70 7.0 8.3 84
GRAND TARGHEE 9260 14.2 -M * 12.4 -M *
GRANITE CREEK 6770 1.8 3.7 49 7.7 5.7 135
GRASSY LAKE 7265 6.3 8.1 78 13.8 10.1 137
GROS VENTRE SUMMIT 8750 4.7 4.1 115 6.1 4.4 139
GUNSIGHT PASS 9820 3.0 -M * 5.7 -M *
LEWIS LAKE DIVIDE 7850 8.1 8.2 99 13.6 10.4 131
PHILLIPS BENCH 8200 5.6 6.8 82 10.0 7.8 128
SALT RIVER SUMMIT 7760 .7 2.8 25 3.3 5.2 63
SNAKE RIVER STATION 6920 2.4 4.3 56 10.0 6.8 147
SPRING CREEK DIVIDE 9000 3.8 7.2 53 5.3 7.7 69
THUMB DIVIDE 7980 3.5 4.3 81 7.6 5.7 133
TOGWOTEE PASS 9580 9.1 7.3 125 10.6 7.6 139
TWO OCEAN PLATEAU 9240 12.3 8.7 141 12.0 8.6 140
WILLOW CREEK 8380 4.3 8.1 53 9.9 9.8 101
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Basin wide percent of average 84 121
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 9.8 7.4 132 9.5 6.2 153
BLACK BEAR 8170 11.0 10.2 108 13.5 11.0 123
CANYON 7870 4.3 3.5 123 7.7 5.0 154
FISHER CREEK 9100 14.8 9.9 149 14.2 10.3 138
MADISON PLATEAU 7750 6.6 6.6 100 10.6 7.6 139
NORTHEAST ENTRANCE 7350 1.6 2.7 59 5.6 4.2 133
PARKER PEAK 9400 9.1 7.0 130 9.6 5.7 168
SYLVAN LAKE 8420 6.0 6.8 88 10.1 7.4 136
THUMB DIVIDE 7980 3.5 4.3 81 7.6 5.7 133
TWO OCEAN PLATEAU 9240 12.3 8.7 141 12.0 8.6 140
WHISKEY CREEK 6800 3.5 4.1 85 8.8 6.2 142
WHITE MILL 8700 9.5 7.0 136 9.8 8.1 121
WOLVERINE 7650 2.1 3.2 66 6.0 4.7 128
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Basin wide percent of average 116 138
WIND RIVER
BURROUGHS CREEK 8750 5.8 4.1 141 8.4 5.1 165
COLD SPRINGS 9630 .9 3.2 28 3.7 4.3 86
DEER PARK 9700 2.0 4.6 43 5.3 7.3 73
HOBBS PARK 10100 2.5 5.4 46 4.8 4.7 102
LITTLE WARM 9370 2.8 3.6 78 5.3 4.8 110
SOUTH PASS 9040 1.6 5.1 31 4.1 6.2 66
ST. LAWRENCE ALT 8620 1.0 2.7 37 2.5 3.6 69
TOGWOTEE PASS 9580 9.1 7.3 125 10.6 7.6 139
TOWNSEND CREEK 8700 1.0 3.0 33 3.5 4.6 76
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Basin wide percent of average 68 100
BIGHORN BASIN
BALD MTN. 9380 4.1 6.2 66 5.5 5.5 100
BEAR TRAP MEADOW 8200 1.8 1.7 106 3.4 3.5 97
BLACKWATER 9780 9.9 8.3 119 9.4 7.5 125
BONE SPRINGS DIV 9350 4.3 5.5 78 5.4 5.0 108
EVENING STAR 9200 10.0 9.0 111 12.7 8.5 149
GRAVE SPRINGS 8550 2.1 2.7 78 3.8 3.7 103
KIRWIN 9550 5.6 4.3 130 6.9 4.2 164
MARQUETTE 8760 .4 3.8 11 4.6 4.2 110
MIDDLE POWDER 7760 2.4 3.7 65 3.6 5.0 72
OWL CREEK 8975 1.8 1.9 95 3.5 2.2 159
POWDER RIVER PASS 9480 2.9 3.5 83 4.9 4.2 117
SHELL CREEK 9580 5.9 5.3 111 6.4 4.6 139
SYLVAN LAKE 8420 6.0 6.8 88 10.1 7.4 136
SYLVAN ROAD 7120 2.3 3.8 61 9.6 6.9 139
TIMBER CREEK 7950 .9 2.4 38 4.4 3.0 147
YOUNTS PEAK 8350 5.6 5.1 110 8.5 5.4 157
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Basin wide percent of average 89 127
SHOSHONE RIVER
BLACKWATER 9780 9.9 8.3 119 9.4 7.5 125
EVENING STAR 9200 10.0 9.0 111 12.7 8.5 149
KIRWIN 9550 5.6 4.3 130 6.9 4.2 164
MARQUETTE 8760 .4 3.8 11 4.6 4.2 110
SYLVAN LAKE 8420 6.0 6.8 88 10.1 7.4 136
SYLVAN ROAD 7120 2.3 3.8 61 9.6 6.9 139
YOUNTS PEAK 8350 5.6 5.1 110 8.5 5.4 157
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Basin wide percent of average 97 140
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.8 1.7 106 3.4 3.5 97
BIG GOOSE 7990 2.6 2.5 104 5.7 3.1 184
BONE SPRINGS DIV 9350 4.3 5.5 78 5.4 5.0 108
BURGESS JUNCTION 7880 2.7 3.6 75 5.1 4.3 119
CLOUD PEAK RESERVOIR 9860 4.5 3.9 115 6.9 5.0 138
DOME LAKE 8880 3.2 4.3 74 6.5 5.0 130
GRAVE SPRINGS 8550 2.1 2.7 78 3.8 3.7 103
HANSEN SAWMILL 8360 2.1 2.1 100 4.6 3.3 139
MIDDLE POWDER 7760 2.4 3.7 65 3.6 5.0 72
POWDER RIVER PASS 9480 2.9 3.5 83 4.9 4.2 117
SUCKER CREEK 8880 3.0 3.4 88 5.6 4.6 122
TIE CREEK 6870 .6 1.2 50 4.1 3.8 108
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Basin wide percent of average 85 118
BELLE FOURCHE
BLIND PARK 6890 .8 2.0 40 2.7 4.6 59
COLE CANYON 5910 .5 2.2 23 2.3 3.0 77
NORTH RAPID CREEK 6130 1.4 1.8 78 2.2 3.9 56
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Basin wide percent of average 45 63
UPPER N. PLATTE RIVER
COLUMBINE 9160 2.3 5.3 43 6.1 6.7 91
DIVIDE PEAK 8880 5.1 5.3 96 6.1 6.4 95
ELK RIVER 8700 3.0 3.3 91 5.8 5.4 107
JOE WRIGHT 10120 6.4 6.5 98 8.3 8.0 104
NORTH FRENCH CREEK 10130 7.8 8.2 95 9.0 7.8 115
OLD BATTLE 10000 6.8 9.5 72 9.2 9.7 95
SAGE CREEK BASIN 7850 1.6 3.1 52 4.5 3.7 122
SOUTH BRUSH CREEK 8440 3.4 3.0 113 6.5 5.4 120
TOWER 10500 7.1 13.2 54 10.0 11.1 90
WEBBER SPRINGS 9250 4.7 7.0 67 7.4 8.1 91
WILLOW CREEK PASS 9540 3.9 3.7 105 5.0 4.5 111
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Basin wide percent of average 77 101
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.7 6.3 75 6.1 6.5 94
CASPER MTN. 7900 1.4 4.8 29 4.9 5.4 91
DEADMAN HILL 10220 5.3 5.2 102 5.4 5.4 100
DEER PARK 9700 2.0 4.6 43 5.3 7.3 73
LAPRELE CREEK 8375 .3 3.3 9 3.0 4.4 68
RENO HILL 8400 2.5 4.4 57 4.9 5.2 94
ROACH 9700 4.4 4.5 98 6.3 5.4 117
SAND LAKE 10050 7.8 9.6 81 8.6 7.5 115
SOUTH PASS 9040 1.6 5.1 31 4.1 6.2 66
WINDY PEAK 7900 .9 2.4 38 2.7 3.9 69
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Basin wide percent of average 62 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.2 1.9 63 4.1 4.6 89
DIVIDE PEAK 8880 5.1 5.3 96 6.1 6.4 95
OLD BATTLE 10000 6.8 9.5 72 9.2 9.7 95
SANDSTONE RS 8150 1.1 2.5 44 4.9 5.7 86
WHISKEY PARK 8950 4.5 6.4 70 7.7 8.2 94
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Basin wide percent of average 73 92
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.5 4.2 60 3.5 4.4 80
BLIND BULL SUM 8650 4.9 7.5 65 5.3 6.8 78
EAST RIM DIVIDE 7930 .6 3.4 18 3.4 3.6 94
ELKHART PARK G.S. 9400 2.5 3.7 68 4.2 4.6 91
GROS VENTRE SUMMIT 8750 4.7 4.1 115 6.1 4.4 139
GUNSIGHT PASS 9820 3.0 -M * 5.7 -M *
KENDALL R.S. 7740 1.9 3.4 56 4.5 4.2 107
LOOMIS PARK 8240 2.6 4.6 57 4.5 5.2 87
NEW FORK LAKE 8340 1.8 3.0 60 3.6 4.0 90
SNIDER BASIN 8060 1.1 3.9 28 3.1 4.7 66
SPRING CREEK DIVIDE 9000 3.8 7.2 53 5.3 7.7 69
TRIPLE PEAK 8500 4.2 6.7 63 7.2 6.8 106
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Basin wide percent of average 59 90
LOWER GREEN RIVER
HAMS FORK 7840 .4 2.7 15 2.3 3.7 62
HEWINTA 9519 .6 2.3 26 5.5 5.1 108
HICKERSON PARK 9145 .7 1.6 44 3.4 3.3 103
HOLE-IN-ROCK 9150 .7 1.6 44 3.9 3.0 130
INDIAN CREEK 9425 3.1 7.0 44 4.1 7.3 56
KELLEY R.S. 8180 1.7 4.4 39 4.2 6.0 70
STEEL CREEK PARK 10200 -M 4.2 * 6.0 5.3 113
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Basin wide percent of average 37 87
UPPER BEAR RIVER
BUG LAKE 7950 -M 4.3 * 2.7 6.0 45
HAYDEN FORK 9212 2.2 3.2 69 4.9 6.4 77
KELLEY R.S. 8180 1.7 4.4 39 4.2 6.0 70
LILY LAKE 9156 1.1 3.1 35 5.0 5.9 85
MONTE CRISTO 8960 2.6 5.5 47 5.2 7.6 68
SALT RIVER SUMMIT 7760 .7 2.8 25 3.3 5.2 63
TRIAL LAKE 9992 3.0 5.9 51 4.2 7.0 60
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Basin wide percent of average 45 67
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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.