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: FEBRUARY 20 , 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 14.2 14.7 97 16.4 18.9 87
COTTONWOOD CREEK 7600 16.3 17.2 95 17.4 20.7 84
GRANITE CREEK 6770 13.9 14.4 97 15.9 19.8 80
GRASSY LAKE 7265 25.9 29.7 87 26.6 30.5 87
GROS VENTRE SUMMIT 8775 7.9 12.1 65 9.2 13.4 69
LEWIS LAKE DIVIDE 7860 22.9 27.5 83 24.6 31.0 79
PHILLIPS BENCH 8200 21.2 22.8 93 21.4 24.6 87
SALT RIVER SUMMIT 7600 11.6 11.1 105 13.6 14.2 96
SNAKE RIVER STATION 6920 13.7 15.1 91 16.6 21.5 77
SPRING CREEK DIVIDE 9000 16.7 21.6 77 16.8 22.6 74
THUMB DIVIDE 7980 12.2 13.4 91 13.4 17.7 76
TOGWOTEE PASS 9580 19.5 19.6 99 18.3 23.2 79
TWO OCEAN PLATEAU 9360 21.3 21.0 101 21.6 26.0 83
WILLOW CREEK 8450 20.7 24.5 84 23.8 26.7 89
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Basin wide percent of average 90 82
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 15.6 18.7 83 13.6 14.1 96
BLACK BEAR 7950 29.5 29.5 100 -M 31.4 *
CANYON 7940 10.3 9.9 104 11.6 11.4 102
FISHER CREEK 9100 24.2 28.4 85 21.9 28.7 76
MADISON PLATEAU 7750 15.6 19.3 81 16.9 20.4 83
NORTHEAST ENTRANCE 7350 6.0 7.6 79 10.1 9.6 105
PARKER PEAK 9400 14.4 16.8 86 12.5 12.3 102
SYLVAN LAKE 8420 13.0 17.4 75 15.8 15.3 103
THUMB DIVIDE 7980 12.2 13.4 91 13.4 17.7 76
TWO OCEAN PLATEAU 9360 21.3 21.0 101 21.6 26.0 83
WHISKEY CREEK 6800 10.7 13.4 80 13.4 16.8 80
WHITE MILL 8700 18.4 20.0 92 17.0 22.4 76
WOLVERINE 7650 7.9 9.5 83 8.5 10.3 83
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Basin wide percent of average 89 86
WIND RIVER
BURROUGHS CREEK 8750 11.7 12.3 95 12.9 13.1 98
COLD SPRINGS 9630 7.2 6.6 109 7.9 7.9 100
DEER PARK 9700 -M -M * 14.0 -M *
HOBBS PARK 10100 9.9 11.4 87 8.8 10.6 83
LITTLE WARM 9620 7.6 8.6 88 9.5 10.2 93
SOUTH PASS 9040 10.1 13.2 77 11.4 12.8 89
ST. LAWRENCE ALT 8620 7.0 5.8 121 6.9 7.5 92
TOGWOTEE PASS 9580 19.5 19.6 99 18.3 23.2 79
TOWNSEND CREEK 8700 7.4 7.4 100 8.7 9.2 95
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Basin wide percent of average 95 89
BIGHORN BASIN
BALD MTN. 9375 14.4 16.0 90 12.9 13.3 97
BEAR TRAP MEADOW 7900 3.8 5.6 68 -M 6.0 *
BLACKWATER 9780 16.3 16.7 98 14.4 14.2 101
BONE SPRINGS DIV 9350 11.1 12.5 89 11.5 11.0 105
EVENING STAR 9200 18.4 21.2 87 19.9 17.8 112
GRAVE SPRINGS 8550 5.3 -M * 5.7 7.1 80
KIRWIN 9550 9.7 7.6 128 10.9 8.0 136
MARQUETTE 8760 9.8 6.1 161 10.0 6.7 149
MIDDLE POWDER 7760 6.3 9.1 69 6.8 8.8 77
OWL CREEK 8975 4.9 3.4 144 4.7 4.5 104
POWDER RIVER PASS 9480 7.1 8.2 87 7.9 8.9 89
SHELL CREEK 9580 10.1 11.9 85 8.0 10.1 79
SYLVAN LAKE 8420 13.0 17.4 75 15.8 15.3 103
SYLVAN ROAD 8120 8.2 10.4 79 12.0 12.8 94
TIMBER CREEK 7950 6.4 4.5 142 7.8 4.8 163
YOUNTS PEAK 8350 11.9 14.0 85 11.8 13.1 90
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Basin wide percent of average 92 102
SHOSHONE RIVER
BLACKWATER 9780 16.3 16.7 98 14.4 14.2 101
EVENING STAR 9200 18.4 21.2 87 19.9 17.8 112
KIRWIN 9550 9.7 7.6 128 10.9 8.0 136
MARQUETTE 8760 9.8 6.1 161 10.0 6.7 149
SYLVAN LAKE 8420 13.0 17.4 75 15.8 15.3 103
SYLVAN ROAD 8120 8.2 10.4 79 12.0 12.8 94
YOUNTS PEAK 8350 11.9 14.0 85 11.8 13.1 90
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Basin wide percent of average 93 108
POWDER-TONGUE
BEAR TRAP MEADOW 7900 3.8 5.6 68 -M 6.0 *
BONE SPRINGS DIV 9350 11.1 12.5 89 11.5 11.0 105
BURGESS JUNCTION 7880 6.9 9.0 77 8.2 8.1 101
CLOUD PEAK RESERVOIR 9860 9.5 10.1 94 10.2 9.6 106
DOME LAKE 8880 7.9 10.5 75 10.1 9.9 102
GRAVE SPRINGS 8550 5.3 -M * 5.7 7.1 80
HANSEN SAWMILL 8760 5.5 5.4 102 6.3 5.7 111
MIDDLE POWDER 7760 6.3 9.1 69 6.8 8.8 77
POWDER RIVER PASS 9480 7.1 8.2 87 7.9 8.9 89
SUCKER CREEK 8880 8.5 9.1 93 9.9 9.9 100
TIE CREEK 6870 5.3 -M * 9.1 7.8 117
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Basin wide percent of average 84 99
BELLE FOURCHE
BLIND PARK 6890 5.7 8.5 67 8.1 7.1 114
NORTH RAPID CREEK 6130 5.9 -M * 6.6 -M *
WARREN PEAK 6520 6.7 8.5 79 6.8 5.9 115
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Basin wide percent of average 73 115
UPPER N. PLATTE RIVER
COLUMBINE 9400 16.0 19.3 83 16.4 19.2 85
DIVIDE PEAK 8800 12.9 15.7 82 14.3 17.9 80
ELK RIVER 8700 11.7 15.5 75 12.4 14.5 86
JOE WRIGHT 10120 14.6 16.4 89 17.4 19.0 92
NORTH FRENCH CREEK 10100 -M 19.0 * 18.8 17.7 106
OLD BATTLE 10000 21.0 24.4 86 24.9 22.9 109
SOUTH BRUSH CREEK 8400 6.6 8.6 77 7.3 12.2 60
TOWER 10500 32.9 35.0 94 29.2 28.1 104
WEBBER SPRINGS 9200 14.2 20.8 68 18.3 19.4 94
WILLOW CREEK PASS 9540 4.8 8.6 56 5.0 9.2 54
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Basin wide percent of average 82 91
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.6 18.6 68 13.9 14.4 97
CASPER MTN. 7900 9.5 11.3 84 9.3 10.1 92
DEADMAN HILL 10220 10.2 12.8 80 9.9 12.1 82
DEER PARK 9700 -M -M * 14.0 -M *
LAPRELE CREEK 8320 6.4 7.8 82 7.6 8.6 88
RENO HILL 8400 9.0 10.0 90 8.1 13.6 60
ROACH 9700 10.5 13.0 81 12.2 16.3 75
SAND LAKE 10080 17.4 25.1 69 15.9 15.4 103
SOUTH PASS 9040 10.1 13.2 77 11.4 12.8 89
WINDY PEAK 7840 5.1 5.6 91 6.2 6.7 93
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Basin wide percent of average 77 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.0 9.0 89 11.0 12.1 91
DIVIDE PEAK 8800 12.9 15.7 82 14.3 17.9 80
OLD BATTLE 10000 21.0 24.4 86 24.9 22.9 109
SANDSTONE RS 8150 10.3 11.3 91 13.7 14.7 93
WHISKEY PARK 8950 -M 21.9 * 16.8 21.7 77
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Basin wide percent of average 86 90
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.7 11.2 69 6.9 13.7 50
BLIND BULL SUM 8650 18.6 22.7 82 14.4 19.7 73
EAST RIM DIVIDE 7930 8.0 11.1 72 8.2 12.8 64
ELKHART PARK G.S. 9400 8.6 10.8 80 9.1 13.5 67
GROS VENTRE SUMMIT 8775 7.9 12.1 65 9.2 13.4 69
KENDALL R.S. 7740 10.8 11.7 92 10.8 13.1 82
LOOMIS PARK 8240 10.3 13.9 74 11.6 15.8 73
NEW FORK LAKE 8340 7.4 9.3 80 7.8 12.2 64
SNIDER BASIN 8250 8.9 11.8 75 9.2 12.8 72
SPRING CREEK DIVIDE 9000 16.7 21.6 77 16.8 22.6 74
TRIPLE PEAK 8500 16.6 20.4 81 16.8 26.2 64
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Basin wide percent of average 78 69
LOWER GREEN RIVER
HAMS FORK 7840 8.8 9.8 90 7.9 11.2 71
HEWINTA 9500 8.3 7.7 108 11.5 9.6 120
HICKERSON PARK 9150 7.6 4.6 165 8.9 6.8 131
HOLE-IN-ROCK 9150 5.6 4.1 137 8.1 6.8 119
INDIAN CREEK 9425 18.4 21.4 86 14.4 21.2 68
KELLEY R.S. 8180 12.0 13.2 91 12.4 15.8 78
STEEL CREEK PARK 10100 10.8 11.5 94 13.6 9.8 139
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Basin wide percent of average 99 95
UPPER BEAR RIVER
BUG LAKE 7950 16.6 15.6 106 16.1 14.9 108
HAYDEN FORK 9400 10.1 12.6 80 15.1 14.1 107
KELLEY R.S. 8180 12.0 13.2 91 12.4 15.8 78
LILY LAKE 9050 10.1 9.9 102 12.2 11.0 111
MONTE CRISTO 8960 22.4 21.2 106 19.8 19.4 102
SALT RIVER SUMMIT 7600 11.6 11.1 105 13.6 14.2 96
TRIAL LAKE 9960 15.5 19.3 80 16.5 18.3 90
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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.