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 MONDAY: FEBRUARY 16 , 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 14.1 14.2 99 16.3 18.3 89
COTTONWOOD CREEK 7600 16.2 16.6 98 17.4 20.0 87
GRANITE CREEK 6770 13.9 14.0 99 15.9 19.3 82
GRASSY LAKE 7265 25.8 29.8 87 26.6 29.7 90
GROS VENTRE SUMMIT 8775 8.0 11.8 68 9.2 13.0 71
LEWIS LAKE DIVIDE 7860 23.0 26.6 86 24.7 30.2 82
PHILLIPS BENCH 8200 21.2 22.2 95 21.3 23.9 89
SALT RIVER SUMMIT 7600 11.6 10.7 108 13.6 13.8 99
SNAKE RIVER STATION 6920 13.5 14.6 92 16.6 20.9 79
SPRING CREEK DIVIDE 9000 16.7 20.9 80 16.8 21.9 77
THUMB DIVIDE 7980 12.2 13.0 94 13.5 17.2 78
TOGWOTEE PASS 9580 19.1 19.0 101 18.2 22.6 81
TWO OCEAN PLATEAU 9360 21.4 20.5 104 21.6 25.3 85
WILLOW CREEK 8450 20.4 23.9 85 23.7 25.9 92
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Basin wide percent of average 92 85
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 15.8 18.1 87 13.8 13.7 101
BLACK BEAR 7950 29.3 28.5 103 26.5 30.4 87
CANYON 7940 10.3 9.6 107 11.6 11.1 105
FISHER CREEK 9100 24.2 27.5 88 22.0 27.9 79
MADISON PLATEAU 7750 15.5 18.7 83 16.9 19.7 86
NORTHEAST ENTRANCE 7350 6.1 7.4 82 10.1 9.3 109
PARKER PEAK 9400 14.4 16.3 88 12.6 11.9 106
SYLVAN LAKE 8420 12.9 16.9 76 15.6 14.9 105
THUMB DIVIDE 7980 12.2 13.0 94 13.5 17.2 78
TWO OCEAN PLATEAU 9360 21.4 20.5 104 21.6 25.3 85
WHISKEY CREEK 6800 10.7 12.9 83 13.4 16.3 82
WHITE MILL 8700 18.4 19.4 95 17.0 21.7 78
WOLVERINE 7650 8.2 9.2 89 8.5 10.0 85
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Basin wide percent of average 91 89
WIND RIVER
BURROUGHS CREEK 8750 11.7 12.0 98 12.8 12.7 101
COLD SPRINGS 9630 7.1 6.4 111 7.8 7.7 101
DEER PARK 9700 -M -M * 13.9 -M *
HOBBS PARK 10100 9.9 11.1 89 8.5 10.3 83
LITTLE WARM 9620 7.8 8.3 94 9.6 9.9 97
SOUTH PASS 9040 10.1 12.8 79 11.2 12.4 90
ST. LAWRENCE ALT 8620 6.9 5.6 123 6.9 7.2 96
TOGWOTEE PASS 9580 19.1 19.0 101 18.2 22.6 81
TOWNSEND CREEK 8700 7.4 7.2 103 8.9 8.9 100
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Basin wide percent of average 97 91
BIGHORN BASIN
BALD MTN. 9375 14.4 15.6 92 12.8 13.0 98
BEAR TRAP MEADOW 7900 4.0 5.4 74 -M 5.9 *
BLACKWATER 9780 16.4 16.1 102 14.4 13.8 104
BONE SPRINGS DIV 9350 11.2 12.1 93 11.5 10.6 108
EVENING STAR 9200 18.2 20.6 88 19.8 17.3 114
GRAVE SPRINGS 8550 5.3 -M * 5.6 6.9 81
KIRWIN 9550 9.8 7.4 132 10.9 7.8 140
MARQUETTE 8760 9.6 5.9 163 9.9 6.5 152
MIDDLE POWDER 7760 6.2 8.8 70 6.8 8.6 79
OWL CREEK 8975 4.9 3.2 153 4.9 4.4 111
POWDER RIVER PASS 9480 7.1 8.0 89 8.1 8.7 93
SHELL CREEK 9580 10.1 11.6 87 8.0 9.8 82
SYLVAN LAKE 8420 12.9 16.9 76 15.6 14.9 105
SYLVAN ROAD 8120 8.2 10.0 82 11.9 12.4 96
TIMBER CREEK 7950 6.1 4.3 142 7.5 4.7 160
YOUNTS PEAK 8350 12.0 13.6 88 11.9 12.7 94
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Basin wide percent of average 95 105
SHOSHONE RIVER
BLACKWATER 9780 16.4 16.1 102 14.4 13.8 104
EVENING STAR 9200 18.2 20.6 88 19.8 17.3 114
KIRWIN 9550 9.8 7.4 132 10.9 7.8 140
MARQUETTE 8760 9.6 5.9 163 9.9 6.5 152
SYLVAN LAKE 8420 12.9 16.9 76 15.6 14.9 105
SYLVAN ROAD 8120 8.2 10.0 82 11.9 12.4 96
YOUNTS PEAK 8350 12.0 13.6 88 11.9 12.7 94
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Basin wide percent of average 96 111
POWDER-TONGUE
BEAR TRAP MEADOW 7900 4.0 5.4 74 -M 5.9 *
BONE SPRINGS DIV 9350 11.2 12.1 93 11.5 10.6 108
BURGESS JUNCTION 7880 7.0 8.7 80 8.3 7.9 105
CLOUD PEAK RESERVOIR 9860 9.5 9.7 98 10.3 9.3 111
DOME LAKE 8880 8.0 10.2 78 10.0 9.6 104
GRAVE SPRINGS 8550 5.3 -M * 5.6 6.9 81
HANSEN SAWMILL 8760 5.5 5.2 106 6.1 5.5 111
MIDDLE POWDER 7760 6.2 8.8 70 6.8 8.6 79
POWDER RIVER PASS 9480 7.1 8.0 89 8.1 8.7 93
SUCKER CREEK 8880 8.4 8.8 95 10.0 9.6 104
TIE CREEK 6870 5.4 -M * 8.9 7.5 119
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Basin wide percent of average 87 102
BELLE FOURCHE
BLIND PARK 6890 5.5 8.3 66 8.0 6.9 116
NORTH RAPID CREEK 6130 5.5 -M * 6.4 -M *
WARREN PEAK 6520 6.4 8.3 77 6.7 5.7 118
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Basin wide percent of average 72 117
UPPER N. PLATTE RIVER
COLUMBINE 9400 15.7 18.6 84 16.9 18.6 91
DIVIDE PEAK 8800 12.6 15.2 83 14.3 17.5 82
ELK RIVER 8700 11.6 14.9 78 12.5 14.1 89
JOE WRIGHT 10120 14.2 15.9 89 16.6 18.5 90
NORTH FRENCH CREEK 10100 19.3 18.4 105 18.5 17.1 108
OLD BATTLE 10000 20.7 23.6 88 24.8 22.1 112
SOUTH BRUSH CREEK 8400 6.5 8.3 78 7.1 11.9 60
TOWER 10500 32.1 34.0 94 28.8 27.3 105
WEBBER SPRINGS 9200 14.1 20.2 70 18.2 18.8 97
WILLOW CREEK PASS 9540 4.7 8.4 56 5.5 8.9 62
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Basin wide percent of average 85 93
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.6 18.0 70 13.9 13.9 100
CASPER MTN. 7900 9.0 10.9 83 9.0 9.8 92
DEADMAN HILL 10220 10.5 12.5 84 9.9 11.7 85
DEER PARK 9700 -M -M * 13.9 -M *
LAPRELE CREEK 8320 6.3 7.6 83 7.5 8.4 89
RENO HILL 8400 8.6 9.6 90 7.8 13.1 60
ROACH 9700 10.3 12.6 82 12.1 15.9 76
SAND LAKE 10080 17.4 24.3 72 15.7 14.9 105
SOUTH PASS 9040 10.1 12.8 79 11.2 12.4 90
WINDY PEAK 7840 5.0 5.4 93 6.0 6.5 92
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Basin wide percent of average 79 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.8 8.6 91 10.9 11.8 92
DIVIDE PEAK 8800 12.6 15.2 83 14.3 17.5 82
OLD BATTLE 10000 20.7 23.6 88 24.8 22.1 112
SANDSTONE RS 8150 10.3 10.9 94 13.6 14.4 94
WHISKEY PARK 8950 20.0 21.2 94 -M 21.3 *
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Basin wide percent of average 90 97
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.8 10.8 72 7.2 13.3 54
BLIND BULL SUM 8650 18.5 22.0 84 14.4 19.1 75
EAST RIM DIVIDE 7930 8.1 10.7 76 8.3 12.4 67
ELKHART PARK G.S. 9400 8.8 10.5 84 9.2 13.1 70
GROS VENTRE SUMMIT 8775 8.0 11.8 68 9.2 13.0 71
KENDALL R.S. 7740 10.9 11.3 96 11.1 12.7 87
LOOMIS PARK 8240 10.2 13.5 76 11.7 15.4 76
NEW FORK LAKE 8340 7.5 9.0 83 8.0 11.8 68
SNIDER BASIN 8250 9.0 11.4 79 9.3 12.4 75
SPRING CREEK DIVIDE 9000 16.7 20.9 80 16.8 21.9 77
TRIPLE PEAK 8500 16.6 19.8 84 16.9 25.5 66
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Basin wide percent of average 80 72
LOWER GREEN RIVER
HAMS FORK 7840 8.9 9.5 94 7.8 10.9 72
HEWINTA 9500 8.2 7.4 111 11.0 9.4 117
HICKERSON PARK 9150 7.2 4.4 164 8.9 6.6 135
HOLE-IN-ROCK 9150 5.4 3.9 138 8.0 6.6 121
INDIAN CREEK 9425 18.2 20.8 88 14.4 20.6 70
KELLEY R.S. 8180 12.1 12.7 95 12.6 15.4 82
STEEL CREEK PARK 10100 10.6 11.0 96 13.3 9.5 140
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Basin wide percent of average 101 96
UPPER BEAR RIVER
BUG LAKE 7950 16.3 15.0 109 16.0 14.5 110
HAYDEN FORK 9400 9.9 12.1 82 14.9 13.7 109
KELLEY R.S. 8180 12.1 12.7 95 12.6 15.4 82
LILY LAKE 9050 9.8 9.6 102 11.8 10.7 110
MONTE CRISTO 8960 22.1 20.2 109 19.6 18.8 104
SALT RIVER SUMMIT 7600 11.6 10.7 108 13.6 13.8 99
TRIAL LAKE 9960 15.3 18.4 83 16.2 17.6 92
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Basin wide percent of average 98 100
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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.