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: JANUARY 17 , 1998
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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 11.6 10.4 112 13.8 13.8 100
COTTONWOOD CREEK 7600 11.4 11.8 97 12.8 14.7 87
GRANITE CREEK 6770 10.1 10.1 100 12.3 14.6 84
GRASSY LAKE 7265 20.0 19.0 105 21.0 22.4 94
GROS VENTRE SUMMIT 8775 6.3 8.9 71 7.4 9.9 75
LEWIS LAKE DIVIDE 7860 17.9 18.7 96 20.0 22.8 88
PHILLIPS BENCH 8200 15.6 15.8 99 16.2 17.9 91
SALT RIVER SUMMIT 7600 8.6 7.2 119 10.5 10.5 100
SNAKE RIVER STATION 6920 10.8 10.3 105 13.7 15.8 87
SPRING CREEK DIVIDE 9000 12.5 15.1 83 12.6 16.4 77
THUMB DIVIDE 7980 9.8 9.5 103 11.1 13.0 85
TOGWOTEE PASS 9580 12.1 14.3 85 14.1 17.1 82
TWO OCEAN PLATEAU 9360 17.9 15.7 114 16.7 19.1 87
WILLOW CREEK 8450 14.8 17.3 86 17.3 19.3 90
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Basin wide percent of average 97 88
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 13.0 14.0 93 11.2 10.4 108
BLACK BEAR 7950 22.9 20.4 112 21.3 22.0 97
CANYON 7940 8.0 7.0 114 8.9 8.4 106
FISHER CREEK 9100 19.3 20.3 95 17.2 20.4 84
MADISON PLATEAU 7750 12.2 13.4 91 13.4 14.6 92
NORTHEAST ENTRANCE 7350 4.4 5.3 83 8.4 7.1 118
PARKER PEAK 9400 11.6 12.6 92 10.0 9.1 110
SYLVAN LAKE 8420 9.9 13.0 76 12.3 11.6 106
THUMB DIVIDE 7980 9.8 9.5 103 11.1 13.0 85
TWO OCEAN PLATEAU 9360 17.9 15.7 114 16.7 19.1 87
WHISKEY CREEK 6800 8.3 9.3 89 10.7 12.1 88
WHITE MILL 8700 14.8 14.4 103 13.9 16.2 86
WOLVERINE 7650 6.7 6.7 100 7.4 7.6 97
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Basin wide percent of average 98 95
WIND RIVER
BURROUGHS CREEK 8750 10.1 8.9 113 11.2 9.8 114
COLD SPRINGS 9630 6.1 5.2 117 6.8 6.2 110
DEER PARK 9700 -M -M * 11.7 -M *
HOBBS PARK 10100 8.6 9.0 96 8.0 8.1 99
LITTLE WARM 9620 6.0 6.2 97 7.7 7.8 99
SOUTH PASS 9040 9.1 10.0 91 10.2 9.4 109
ST. LAWRENCE ALT 8620 6.4 4.1 156 6.3 5.7 111
TOGWOTEE PASS 9580 12.1 14.3 85 14.1 17.1 82
TOWNSEND CREEK 8700 6.7 5.4 124 8.1 6.8 119
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Basin wide percent of average 103 102
BIGHORN BASIN
BALD MTN. 9375 11.3 12.2 93 10.2 10.2 100
BEAR TRAP MEADOW 7900 2.9 4.3 67 3.7 4.9 76
BLACKWATER 9780 14.0 12.1 116 12.2 10.6 115
BONE SPRINGS DIV 9350 9.1 9.4 97 9.6 8.2 117
EVENING STAR 9200 15.1 15.7 96 16.5 13.1 126
GRAVE SPRINGS 8550 3.4 -M * 4.1 5.8 71
KIRWIN 9550 8.7 6.0 145 9.6 6.0 160
MARQUETTE 8760 8.3 4.6 180 8.6 5.3 162
MIDDLE POWDER 7760 4.1 6.9 59 5.1 6.9 74
OWL CREEK 8975 3.8 2.4 158 3.8 3.3 115
POWDER RIVER PASS 9480 5.3 6.1 87 6.1 6.7 91
SHELL CREEK 9580 7.8 9.1 86 6.3 7.7 82
SYLVAN LAKE 8420 9.9 13.0 76 12.3 11.6 106
SYLVAN ROAD 8120 6.5 7.2 90 10.2 9.6 106
TIMBER CREEK 7950 5.4 3.1 174 6.7 3.8 176
YOUNTS PEAK 8350 10.5 10.7 98 10.4 9.7 107
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Basin wide percent of average 100 110
SHOSHONE RIVER
BLACKWATER 9780 14.0 12.1 116 12.2 10.6 115
EVENING STAR 9200 15.1 15.7 96 16.5 13.1 126
KIRWIN 9550 8.7 6.0 145 9.6 6.0 160
MARQUETTE 8760 8.3 4.6 180 8.6 5.3 162
SYLVAN LAKE 8420 9.9 13.0 76 12.3 11.6 106
SYLVAN ROAD 8120 6.5 7.2 90 10.2 9.6 106
YOUNTS PEAK 8350 10.5 10.7 98 10.4 9.7 107
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Basin wide percent of average 105 121
POWDER-TONGUE
BEAR TRAP MEADOW 7900 2.9 4.3 67 3.7 4.9 76
BONE SPRINGS DIV 9350 9.1 9.4 97 9.6 8.2 117
BURGESS JUNCTION 7880 -M 6.6 * 7.2 6.4 112
CLOUD PEAK RESERVOIR 9860 7.3 6.9 106 8.1 7.1 114
DOME LAKE 8880 6.1 7.8 78 8.3 7.8 106
GRAVE SPRINGS 8550 3.4 -M * 4.1 5.8 71
HANSEN SAWMILL 8760 4.1 4.0 102 5.0 4.5 111
MIDDLE POWDER 7760 4.1 6.9 59 5.1 6.9 74
POWDER RIVER PASS 9480 5.3 6.1 87 6.1 6.7 91
SUCKER CREEK 8880 6.8 6.4 106 8.5 7.6 112
TIE CREEK 6870 4.7 -M * 8.0 6.1 131
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Basin wide percent of average 88 102
BELLE FOURCHE
BLIND PARK 6890 4.9 6.3 78 7.2 5.5 131
NORTH RAPID CREEK 6130 5.0 -M * 5.8 -M *
WARREN PEAK 6520 5.1 6.3 81 5.6 4.6 122
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Basin wide percent of average 79 127
UPPER N. PLATTE RIVER
COLUMBINE 9400 10.3 13.2 78 11.7 13.7 85
DIVIDE PEAK 8800 7.6 11.6 66 10.5 14.1 74
ELK RIVER 8700 7.4 10.5 70 9.3 10.7 87
JOE WRIGHT 10120 11.0 12.3 89 13.3 14.1 94
NORTH FRENCH CREEK 10100 13.0 13.9 94 13.1 13.1 100
OLD BATTLE 10000 14.4 17.8 81 18.4 16.9 109
SOUTH BRUSH CREEK 8400 4.1 6.0 68 5.0 10.3 49
TOWER 10500 20.2 25.2 80 20.0 20.5 98
WEBBER SPRINGS 9200 10.3 15.0 69 13.7 15.0 91
WILLOW CREEK PASS 9540 3.7 6.6 56 4.2 7.0 60
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Basin wide percent of average 77 88
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 8.6 14.2 61 10.1 10.4 97
CASPER MTN. 7900 7.5 8.3 90 7.5 7.9 95
DEADMAN HILL 10220 8.4 9.7 87 7.8 8.9 88
DEER PARK 9700 -M -M * 11.7 -M *
LAPRELE CREEK 8320 4.6 5.7 81 5.8 6.4 91
RENO HILL 8400 7.4 7.4 100 6.6 10.6 62
ROACH 9700 7.4 9.5 78 9.5 12.3 77
SAND LAKE 10080 13.3 18.4 72 12.6 11.3 112
SOUTH PASS 9040 9.1 10.0 91 10.2 9.4 109
WINDY PEAK 7840 3.7 3.8 97 4.9 5.0 98
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Basin wide percent of average 80 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.2 6.2 68 7.7 9.3 83
DIVIDE PEAK 8800 7.6 11.6 66 10.5 14.1 74
OLD BATTLE 10000 14.4 17.8 81 18.4 16.9 109
SANDSTONE RS 8150 6.7 7.9 85 9.9 11.2 88
WHISKEY PARK 8950 12.7 15.8 80 14.5 16.0 91
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Basin wide percent of average 77 90
UPPER GREEN RIVER
BIG SANDY OPENING 9100 5.9 8.0 74 5.4 10.1 53
BLIND BULL SUM 8650 14.4 16.2 89 11.5 13.9 83
EAST RIM DIVIDE 7930 5.9 7.6 78 6.2 9.4 66
ELKHART PARK G.S. 9400 6.3 7.6 83 6.7 9.9 68
GROS VENTRE SUMMIT 8775 6.3 8.9 71 7.4 9.9 75
KENDALL R.S. 7740 8.3 8.3 100 8.7 9.6 91
LOOMIS PARK 8240 7.9 9.6 82 8.5 11.7 73
NEW FORK LAKE 8340 5.2 6.4 81 5.5 9.0 61
SNIDER BASIN 8250 6.5 8.1 80 7.0 9.4 74
SPRING CREEK DIVIDE 9000 12.5 15.1 83 12.6 16.4 77
TRIPLE PEAK 8500 13.1 14.4 91 13.4 19.3 69
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Basin wide percent of average 84 72
LOWER GREEN RIVER
HAMS FORK 7840 6.3 6.5 97 5.5 8.3 66
HEWINTA 9500 6.7 5.2 129 9.0 7.4 122
HICKERSON PARK 9150 5.2 3.1 168 8.1 5.4 150
HOLE-IN-ROCK 9150 4.1 2.8 146 6.9 5.4 128
INDIAN CREEK 9425 12.9 15.2 85 10.3 15.5 66
KELLEY R.S. 8180 8.8 8.8 100 9.4 11.6 81
STEEL CREEK PARK 10100 8.2 8.7 94 10.6 7.7 138
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Basin wide percent of average 104 98
UPPER BEAR RIVER
BUG LAKE 7950 11.6 11.1 105 11.9 11.2 106
HAYDEN FORK 9400 7.0 8.9 79 11.3 10.4 109
KELLEY R.S. 8180 8.8 8.8 100 9.4 11.6 81
LILY LAKE 9050 7.3 7.3 100 9.4 8.4 112
MONTE CRISTO 8960 15.6 14.7 106 14.6 14.5 101
SALT RIVER SUMMIT 7600 8.6 7.2 119 10.5 10.5 100
TRIAL LAKE 9960 10.4 13.9 75 11.1 13.2 84
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Basin wide percent of average 96 98
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-M = Missing data
* = Data may not provide a valid measure of conditions.
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.