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: DECEMBER 11 , 2004
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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 5.4 5.4 100 6.9 7.5 92
COTTONWOOD CREEK 7600 5.3 6.3 84 7.7 9.8 79
GRANITE CREEK 6770 4.1 4.8 85 6.8 6.7 101
GRASSY LAKE 7265 9.6 9.9 97 11.1 12.1 92
GROS VENTRE SUMMIT 8750 4.5 4.9 92 4.4 5.0 88
LEWIS LAKE DIVIDE 7850 9.3 10.0 93 10.5 12.4 85
PHILLIPS BENCH 8200 8.3 8.5 98 9.0 9.4 96
SALT RIVER SUMMIT 7600 3.8 3.5 109 6.5 6.3 103
SNAKE RIVER STATION 6920 4.4 5.3 83 6.5 7.9 82
SPRING CREEK DIVIDE 9000 8.7 8.8 99 9.1 9.1 100
THUMB DIVIDE 7980 5.3 5.1 104 5.6 6.6 85
TOGWOTEE PASS 9580 6.9 8.5 81 7.0 8.8 80
TWO OCEAN PLATEAU 9240 9.9 10.0 99 8.1 9.9 82
WILLOW CREEK 8450 8.7 9.8 89 11.1 11.4 97
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Basin wide percent of average 93 90
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 6.3 8.5 74 5.4 7.2 75
BLACK BEAR 8170 14.3 12.2 117 13.5 12.8 105
CANYON 8090 2.7 4.1 66 4.2 5.8 72
FISHER CREEK 9100 8.9 11.7 76 9.5 12.2 78
MADISON PLATEAU 7750 7.2 7.9 91 8.7 8.9 98
NORTHEAST ENTRANCE 7350 1.6 3.4 47 2.8 4.8 58
PARKER PEAK 9400 6.6 8.0 82 5.4 6.4 84
SYLVAN LAKE 8420 5.8 7.8 74 7.1 8.4 85
THUMB DIVIDE 7980 5.3 5.1 104 5.6 6.6 85
TWO OCEAN PLATEAU 9240 9.9 10.0 99 8.1 9.9 82
WHISKEY CREEK 6800 4.3 5.1 84 6.7 7.2 93
WHITE MILL 8700 6.1 8.2 74 6.3 9.3 68
WOLVERINE 7650 2.8 3.9 72 3.2 5.3 60
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Basin wide percent of average 85 83
WIND RIVER
BURROUGHS CREEK 8750 3.8 4.8 79 4.1 5.9 69
COLD SPRINGS 9630 3.7 3.7 100 3.9 4.7 83
DEER PARK 9700 11.1 5.3 209 12.3 8.3 148
HOBBS PARK 10100 6.6 6.2 106 6.0 5.2 115
LITTLE WARM 9370 3.1 4.0 78 3.5 5.3 66
SOUTH PASS 9040 9.0 6.3 143 9.9 7.0 141
ST. LAWRENCE ALT 8620 3.3 3.1 106 4.1 3.9 105
TOGWOTEE PASS 9580 6.9 8.5 81 7.0 8.8 80
TOWNSEND CREEK 8700 4.0 3.5 114 6.7 5.0 134
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Basin wide percent of average 113 106
BIGHORN BASIN
BALD MTN. 9380 6.0 7.2 83 6.2 6.3 98
BEAR TRAP MEADOW 8200 1.2 2.0 60 3.4 3.8 89
BLACKWATER 9780 6.3 9.3 68 5.9 8.4 70
BONE SPRINGS DIV 9350 5.9 6.1 97 5.9 5.7 104
EVENING STAR 9200 7.0 10.4 67 8.6 9.7 89
GRAVE SPRINGS 8550 1.8 3.0 60 3.6 4.0 90
KIRWIN 9550 2.4 4.8 50 3.0 4.7 64
MARQUETTE 8760 2.3 4.2 55 3.2 4.5 71
MIDDLE POWDER 7760 2.4 4.3 56 3.8 5.5 69
OWL CREEK 8975 1.4 2.2 64 1.8 2.4 75
POWDER RIVER PASS 9480 4.2 3.9 108 5.1 4.7 109
SHELL CREEK 9580 5.3 5.7 93 4.9 5.2 94
SYLVAN LAKE 8420 5.8 7.8 74 7.1 8.4 85
SYLVAN ROAD 7120 2.8 4.5 62 5.1 7.7 66
TIMBER CREEK 7950 .7 2.5 28 1.2 3.2 37
YOUNTS PEAK 8350 4.2 5.8 72 4.4 6.2 71
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Basin wide percent of average 71 81
SHOSHONE RIVER
BLACKWATER 9780 6.3 9.3 68 5.9 8.4 70
EVENING STAR 9200 7.0 10.4 67 8.6 9.7 89
KIRWIN 9550 2.4 4.8 50 3.0 4.7 64
MARQUETTE 8760 2.3 4.2 55 3.2 4.5 71
SYLVAN LAKE 8420 5.8 7.8 74 7.1 8.4 85
SYLVAN ROAD 7120 2.8 4.5 62 5.1 7.7 66
YOUNTS PEAK 8350 4.2 5.8 72 4.4 6.2 71
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Basin wide percent of average 66 75
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.2 2.0 60 3.4 3.8 89
BIG GOOSE 7990 2.7 3.0 90 4.0 3.5 114
BONE SPRINGS DIV 9350 5.9 6.1 97 5.9 5.7 104
BURGESS JUNCTION 7880 2.9 4.1 71 4.3 4.8 90
CLOUD PEAK RESERVOIR 9860 4.8 4.4 109 4.7 5.4 87
DOME LAKE 8880 4.3 4.7 91 4.8 5.5 87
GRAVE SPRINGS 8550 1.8 3.0 60 3.6 4.0 90
HANSEN SAWMILL 8360 1.6 2.4 67 2.5 3.6 69
MIDDLE POWDER 7760 2.4 4.3 56 3.8 5.5 69
POWDER RIVER PASS 9480 4.2 3.9 108 5.1 4.7 109
SUCKER CREEK 8880 4.3 3.8 113 5.4 5.2 104
TIE CREEK 6870 .6 1.4 43 3.5 4.2 83
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Basin wide percent of average 85 91
BELLE FOURCHE
BLIND PARK 6890 1.7 2.4 71 3.7 5.0 74
COLE CANYON 5910 .5 2.3 22 3.2 -M *
NORTH RAPID CREEK 6130 1.5 2.2 68 2.8 4.3 65
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Basin wide percent of average 54 70
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.0 6.5 123 10.0 8.0 125
DIVIDE PEAK 8860 8.7 6.4 136 11.2 7.4 151
ELK RIVER 8700 5.7 4.3 133 8.0 6.4 125
JOE WRIGHT 10120 9.0 7.3 123 9.0 9.1 99
NORTH FRENCH CREEK 10130 9.0 9.6 94 9.0 9.0 100
OLD BATTLE 9920 13.9 11.0 126 16.1 11.5 140
SAGE CREEK BASIN 7850 5.8 3.7 157 8.5 4.3 198
SOUTH BRUSH CREEK 8440 2.7 3.6 75 4.6 6.0 77
TOWER 10500 16.9 15.2 111 16.1 13.0 124
WEBBER SPRINGS 9250 9.2 8.2 112 11.4 9.5 120
WILLOW CREEK PASS 9540 5.4 4.2 129 5.8 5.0 116
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Basin wide percent of average 118 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 6.2 7.5 83 6.5 7.5 87
CASPER MTN. 7850 4.1 5.4 76 5.4 5.8 93
DEADMAN HILL 10220 7.5 5.9 127 5.0 6.1 82
DEER PARK 9700 11.1 5.3 209 12.3 8.3 148
LAPRELE CREEK 8375 2.3 3.9 59 4.6 4.9 94
RENO HILL 8500 3.0 5.1 59 4.0 5.8 69
ROACH 9700 4.1 5.2 79 6.1 6.3 97
SAND LAKE 10050 8.7 11.1 78 7.4 8.6 86
SOUTH PASS 9040 9.0 6.3 143 9.9 7.0 141
WINDY PEAK 7900 2.0 2.7 74 3.8 4.3 88
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Basin wide percent of average 99 101
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.3 2.4 138 6.9 5.3 130
DIVIDE PEAK 8860 8.7 6.4 136 11.2 7.4 151
OLD BATTLE 9920 13.9 11.0 126 16.1 11.5 140
SANDSTONE RS 8150 3.7 3.2 116 8.6 6.6 130
WHISKEY PARK 8950 9.9 7.6 130 11.8 9.5 124
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Basin wide percent of average 129 135
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.6 5.0 152 7.6 5.0 152
BLIND BULL SUM 8900 6.6 9.1 73 6.8 7.9 86
EAST RIM DIVIDE 7930 2.6 4.1 63 3.9 4.2 93
ELKHART PARK G.S. 9400 5.2 4.4 118 6.3 5.1 124
GROS VENTRE SUMMIT 8750 4.5 4.9 92 4.4 5.0 88
KENDALL R.S. 7740 4.4 4.3 102 5.3 5.0 106
LOOMIS PARK 8240 4.8 5.6 86 5.9 6.0 98
NEW FORK LAKE 8340 3.9 3.7 105 4.0 4.5 89
SNIDER BASIN 8060 4.9 4.7 104 6.0 5.6 107
SPRING CREEK DIVIDE 9000 8.7 8.8 99 9.1 9.1 100
TRIPLE PEAK 8500 6.4 8.2 78 8.0 8.0 100
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Basin wide percent of average 95 103
LOWER GREEN RIVER
HAMS FORK 7840 4.5 3.4 132 5.9 4.2 140
HEWINTA 9500 2.9 2.7 107 5.4 5.6 96
HICKERSON PARK 9100 3.7 1.9 195 6.0 3.5 171
HOLE-IN-ROCK 9150 3.0 1.9 158 5.7 3.3 173
INDIAN CREEK 9425 10.3 8.6 120 9.8 8.7 113
KELLEY R.S. 8180 6.8 5.3 128 8.4 7.1 118
STEEL CREEK PARK 10100 5.7 4.9 116 7.1 6.0 118
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Basin wide percent of average 129 126
UPPER BEAR RIVER
BUG LAKE 7950 6.8 5.3 128 9.6 6.8 141
HAYDEN FORK 9100 6.0 4.0 150 10.3 7.4 139
KELLEY R.S. 8180 6.8 5.3 128 8.4 7.1 118
LILY LAKE 9050 4.6 3.7 124 7.7 6.6 117
MONTE CRISTO 8960 10.5 6.9 152 11.7 8.8 133
SALT RIVER SUMMIT 7600 3.8 3.5 109 6.5 6.3 103
TRIAL LAKE 9960 10.9 7.1 154 13.2 8.2 161
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Basin wide percent of average 138 132
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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.