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 FRIDAY: DECEMBER 28 , 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 6.5 7.5 87 12.9 9.7 133
COTTONWOOD CREEK 7670 6.7 8.9 75 9.9 12.5 79
GRAND TARGHEE 9260 20.3 -M * 15.8 -M *
GRANITE CREEK 6770 4.3 6.9 62 10.0 8.9 112
GRASSY LAKE 7265 11.0 13.5 81 18.8 16.0 118
GROS VENTRE SUMMIT 8750 5.9 6.4 92 7.5 6.0 125
GUNSIGHT PASS 9820 3.6 -M * 7.1 -M *
LEWIS LAKE DIVIDE 7850 12.5 13.5 93 18.4 16.3 113
PHILLIPS BENCH 8200 9.0 11.7 77 13.4 12.5 107
SALT RIVER SUMMIT 7760 2.5 4.9 51 5.0 8.3 60
SNAKE RIVER STATION 6920 5.4 7.2 75 13.1 10.3 127
SPRING CREEK DIVIDE 9000 6.4 11.7 55 7.7 12.0 64
THUMB DIVIDE 7980 5.7 7.0 81 9.6 8.5 113
TOGWOTEE PASS 9580 12.1 10.9 111 13.8 11.2 123
TWO OCEAN PLATEAU 9240 17.5 12.6 139 16.1 12.7 127
WILLOW CREEK 8380 8.9 13.2 67 14.6 14.5 101
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Basin wide percent of average 84 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.1 10.7 113 11.7 9.4 124
BLACK BEAR 8170 18.6 15.9 117 20.3 16.4 124
CANYON 7870 6.8 5.5 124 9.8 7.3 134
FISHER CREEK 9100 20.1 15.2 132 18.4 15.9 116
MADISON PLATEAU 7750 11.1 10.3 108 15.0 11.6 129
NORTHEAST ENTRANCE 7350 2.5 4.6 54 6.7 6.0 112
PARKER PEAK 9400 12.2 9.8 124 -M 7.8 *
SYLVAN LAKE 8420 9.0 9.7 93 13.5 10.4 130
THUMB DIVIDE 7980 5.7 7.0 81 9.6 8.5 113
TWO OCEAN PLATEAU 9240 17.5 12.6 139 16.1 12.7 127
WHISKEY CREEK 6800 6.6 6.8 97 12.1 9.2 132
WHITE MILL 8700 12.4 10.4 119 -M 12.0 *
WOLVERINE 7650 3.7 5.3 70 7.3 6.6 111
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Basin wide percent of average 112 123
WIND RIVER
BURROUGHS CREEK 8750 7.5 6.3 119 10.2 7.5 136
COLD SPRINGS 9630 1.8 4.4 41 4.8 5.5 87
DEER PARK 9700 4.8 6.2 77 8.1 10.3 79
HOBBS PARK 10100 4.6 7.3 63 6.1 6.1 100
LITTLE WARM 9370 4.0 5.0 80 6.5 6.3 103
SOUTH PASS 9040 -M 7.7 * 7.3 8.7 84
ST. LAWRENCE ALT 8620 2.1 3.6 58 4.0 4.4 91
TOGWOTEE PASS 9580 12.1 10.9 111 13.8 11.2 123
TOWNSEND CREEK 8700 2.3 4.2 55 5.9 5.8 102
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Basin wide percent of average 82 101
BIGHORN BASIN
BALD MTN. 9380 6.1 9.2 66 6.8 7.9 86
BEAR TRAP MEADOW 8200 3.6 2.5 144 5.0 4.3 116
BLACKWATER 9780 11.8 11.3 104 11.3 10.3 110
BONE SPRINGS DIV 9350 6.2 7.5 83 -M 6.9 *
EVENING STAR 9200 13.4 12.7 106 -M 12.2 *
GRAVE SPRINGS 8550 3.4 3.8 89 5.2 4.6 113
KIRWIN 9550 6.5 5.6 116 7.7 5.6 138
MARQUETTE 8760 1.4 4.8 29 5.4 5.1 106
MIDDLE POWDER 7760 4.0 5.3 75 4.9 6.5 75
OWL CREEK 8975 2.4 2.6 92 4.2 2.8 150
POWDER RIVER PASS 9480 4.4 4.9 90 6.3 5.7 111
SHELL CREEK 9580 7.3 7.0 104 7.8 6.3 124
SYLVAN LAKE 8420 9.0 9.7 93 13.5 10.4 130
SYLVAN ROAD 7120 4.3 5.7 75 12.0 9.7 124
TIMBER CREEK 7950 1.5 3.0 50 5.5 3.6 153
YOUNTS PEAK 8350 7.4 7.3 101 10.0 7.7 130
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Basin wide percent of average 90 117
SHOSHONE RIVER
BLACKWATER 9780 11.8 11.3 104 11.3 10.3 110
EVENING STAR 9200 13.4 12.7 106 -M 12.2 *
KIRWIN 9550 6.5 5.6 116 7.7 5.6 138
MARQUETTE 8760 1.4 4.8 29 5.4 5.1 106
SYLVAN LAKE 8420 9.0 9.7 93 13.5 10.4 130
SYLVAN ROAD 7120 4.3 5.7 75 12.0 9.7 124
YOUNTS PEAK 8350 7.4 7.3 101 10.0 7.7 130
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Basin wide percent of average 94 123
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.6 2.5 144 5.0 4.3 116
BIG GOOSE 7990 3.7 4.1 90 6.6 4.3 153
BONE SPRINGS DIV 9350 6.2 7.5 83 -M 6.9 *
BURGESS JUNCTION 7880 4.4 5.3 83 6.6 5.8 114
CLOUD PEAK RESERVOIR 9860 5.8 5.5 105 7.3 6.2 118
DOME LAKE 8880 4.3 5.7 75 7.8 6.6 118
GRAVE SPRINGS 8550 3.4 3.8 89 5.2 4.6 113
HANSEN SAWMILL 8360 3.0 3.1 97 5.1 4.1 124
MIDDLE POWDER 7760 4.0 5.3 75 4.9 6.5 75
POWDER RIVER PASS 9480 4.4 4.9 90 6.3 5.7 111
SUCKER CREEK 8880 4.7 5.0 94 6.3 6.3 100
TIE CREEK 6870 1.8 2.4 75 5.9 4.9 120
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Basin wide percent of average 89 113
BELLE FOURCHE
BLIND PARK 6890 1.6 3.2 50 3.8 5.9 64
COLE CANYON 5910 1.4 3.1 45 3.0 3.8 79
NORTH RAPID CREEK 6130 2.3 3.0 77 2.9 5.1 57
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Basin wide percent of average 57 66
UPPER N. PLATTE RIVER
COLUMBINE 9160 6.0 9.1 66 9.5 10.6 90
DIVIDE PEAK 8880 9.5 8.5 112 10.2 9.4 109
ELK RIVER 8700 6.9 6.5 106 9.3 8.2 113
JOE WRIGHT 10120 9.1 9.1 100 11.2 11.2 100
NORTH FRENCH CREEK 10130 11.7 12.5 94 12.8 11.2 114
OLD BATTLE 10000 12.1 13.8 88 14.8 14.9 99
SAGE CREEK BASIN 7850 6.9 4.9 141 8.3 5.5 151
SOUTH BRUSH CREEK 8440 5.7 4.8 119 8.8 7.3 121
TOWER 10500 12.0 19.3 62 15.1 16.7 90
WEBBER SPRINGS 9250 9.0 10.7 84 11.8 12.2 97
WILLOW CREEK PASS 9540 6.7 5.3 126 7.9 6.1 130
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Basin wide percent of average 91 106
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.6 10.0 76 9.2 9.5 97
CASPER MTN. 7900 4.8 6.6 73 7.4 6.9 107
DEADMAN HILL 10220 7.3 7.2 101 7.5 7.4 101
DEER PARK 9700 4.8 6.2 77 8.1 10.3 79
LAPRELE CREEK 8375 1.8 5.0 36 4.8 5.8 83
RENO HILL 8400 5.4 6.2 87 7.0 6.8 103
ROACH 9700 8.2 6.8 121 10.0 7.9 127
SAND LAKE 10050 10.8 14.1 77 11.3 10.9 104
SOUTH PASS 9040 -M 7.7 * 7.3 8.7 84
WINDY PEAK 7900 2.8 3.3 85 4.5 5.3 85
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Basin wide percent of average 82 97
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 3.6 142 7.8 6.7 116
DIVIDE PEAK 8880 9.5 8.5 112 10.2 9.4 109
OLD BATTLE 10000 12.1 13.8 88 14.8 14.9 99
SANDSTONE RS 8150 5.8 4.7 123 9.3 8.3 112
WHISKEY PARK 8950 9.2 10.1 91 13.1 12.2 107
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Basin wide percent of average 102 107
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.9 6.5 60 4.7 6.2 76
BLIND BULL SUM 8650 7.6 12.2 62 7.6 10.3 74
EAST RIM DIVIDE 7930 1.6 5.5 29 4.3 5.4 80
ELKHART PARK G.S. 9400 3.6 5.9 61 4.9 6.3 78
GROS VENTRE SUMMIT 8750 5.9 6.4 92 7.5 6.0 125
GUNSIGHT PASS 9820 3.6 -M * 7.1 -M *
KENDALL R.S. 7740 3.0 6.1 49 5.6 6.4 87
LOOMIS PARK 8240 4.4 7.5 59 6.2 7.8 79
NEW FORK LAKE 8340 2.6 5.0 52 3.6 5.5 65
SNIDER BASIN 8060 2.5 6.4 39 4.3 7.3 59
SPRING CREEK DIVIDE 9000 6.4 11.7 55 7.7 12.0 64
TRIPLE PEAK 8500 7.2 11.0 65 10.1 10.4 97
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Basin wide percent of average 58 80
LOWER GREEN RIVER
HAMS FORK 7840 1.9 5.0 38 3.5 5.4 65
HEWINTA 9519 1.9 3.7 51 6.8 6.7 101
HICKERSON PARK 9145 1.2 2.6 46 3.8 4.1 93
HOLE-IN-ROCK 9150 1.1 2.5 44 4.6 3.7 124
INDIAN CREEK 9425 6.3 11.6 54 6.9 11.3 61
KELLEY R.S. 8180 3.8 7.1 54 6.4 9.3 69
STEEL CREEK PARK 10200 3.4 6.2 55 7.8 7.2 108
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Basin wide percent of average 51 83
UPPER BEAR RIVER
BUG LAKE 7950 3.1 7.5 41 5.1 8.6 59
HAYDEN FORK 9212 4.2 5.7 74 7.6 9.4 81
KELLEY R.S. 8180 3.8 7.1 54 6.4 9.3 69
LILY LAKE 9156 2.8 5.0 56 6.9 8.2 84
MONTE CRISTO 8960 6.6 10.0 66 8.3 11.3 73
SALT RIVER SUMMIT 7760 2.5 4.9 51 5.0 8.3 60
TRIAL LAKE 9992 5.5 9.7 57 7.8 10.5 74
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Basin wide percent of average 57 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.