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: MARCH 27 , 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 16.2 17.5 93 19.9 22.4 89
COTTONWOOD CREEK 7600 19.6 23.6 83 22.5 25.2 89
GRANITE CREEK 6770 16.7 18.3 91 20.4 23.5 87
GRASSY LAKE 7265 30.3 35.3 86 32.5 37.2 87
GROS VENTRE SUMMIT 8775 11.0 15.4 71 12.2 16.0 76
LEWIS LAKE DIVIDE 7860 29.6 34.8 85 31.2 37.8 83
PHILLIPS BENCH 8200 26.2 28.7 91 25.9 29.9 87
SALT RIVER SUMMIT 7600 14.1 14.1 100 17.1 16.9 101
SNAKE RIVER STATION 6920 16.4 18.5 89 20.5 26.1 79
SPRING CREEK DIVIDE 9000 22.4 27.6 81 21.0 27.5 76
THUMB DIVIDE 7980 15.5 16.8 92 17.0 20.9 81
TOGWOTEE PASS 9580 24.8 24.5 101 23.3 28.3 82
TWO OCEAN PLATEAU 9360 26.7 26.2 102 26.4 30.8 86
WILLOW CREEK 8450 26.2 29.9 88 30.3 32.2 94
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Basin wide percent of average 89 85
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 18.8 23.2 81 16.4 17.7 93
BLACK BEAR 7950 -M 37.5 * -M 40.1 *
CANYON 7940 12.7 12.7 100 14.4 14.0 103
FISHER CREEK 9100 30.6 35.2 87 26.3 36.1 73
MADISON PLATEAU 7750 20.3 24.2 84 22.1 25.9 85
NORTHEAST ENTRANCE 7350 6.9 9.1 76 11.9 11.6 103
PARKER PEAK 9400 18.3 21.3 86 16.1 15.3 105
SYLVAN LAKE 8420 17.4 21.7 80 20.0 18.8 106
THUMB DIVIDE 7980 15.5 16.8 92 17.0 20.9 81
TWO OCEAN PLATEAU 9360 26.7 26.2 102 26.4 30.8 86
WHISKEY CREEK 6800 13.8 17.1 81 18.1 21.5 84
WHITE MILL 8700 22.8 24.6 93 21.0 27.9 75
WOLVERINE 7650 9.2 11.5 80 9.8 12.5 78
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Basin wide percent of average 87 87
WIND RIVER
BURROUGHS CREEK 8750 14.2 14.8 96 15.7 16.3 96
COLD SPRINGS 9630 9.8 8.2 120 10.6 10.2 104
DEER PARK 9700 -M -M * 19.3 -M *
HOBBS PARK 10100 13.8 14.6 95 12.2 13.7 89
LITTLE WARM 9620 10.7 11.2 96 12.8 12.9 99
SOUTH PASS 9040 14.4 16.0 90 16.1 16.6 97
ST. LAWRENCE ALT 8620 8.9 7.4 120 9.0 9.8 92
TOGWOTEE PASS 9580 24.8 24.5 101 23.3 28.3 82
TOWNSEND CREEK 8700 10.3 9.6 107 12.3 12.1 102
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Basin wide percent of average 101 93
BIGHORN BASIN
BALD MTN. 9375 18.2 20.0 91 16.0 16.9 95
BEAR TRAP MEADOW 7900 5.7 7.0 81 6.8 7.9 86
BLACKWATER 9780 19.9 21.8 91 17.6 17.6 100
BONE SPRINGS DIV 9350 15.6 16.0 98 15.2 14.6 104
EVENING STAR 9200 22.5 26.5 85 24.4 22.1 110
GRAVE SPRINGS 8550 8.1 -M * 8.8 9.2 96
KIRWIN 9550 12.0 9.7 124 13.0 10.4 125
MARQUETTE 8760 12.3 7.9 156 12.4 9.1 136
MIDDLE POWDER 7760 9.4 11.8 80 9.2 11.4 81
OWL CREEK 8975 6.7 4.5 149 6.4 6.0 107
POWDER RIVER PASS 9480 10.4 10.6 98 11.3 11.2 101
SHELL CREEK 9580 13.3 14.6 91 10.1 12.7 80
SYLVAN LAKE 8420 17.4 21.7 80 20.0 18.8 106
SYLVAN ROAD 8120 10.4 12.4 84 14.3 15.8 91
TIMBER CREEK 7950 7.5 6.1 123 9.2 6.7 137
YOUNTS PEAK 8350 14.3 16.9 85 14.4 16.2 89
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Basin wide percent of average 94 101
SHOSHONE RIVER
BLACKWATER 9780 19.9 21.8 91 17.6 17.6 100
EVENING STAR 9200 22.5 26.5 85 24.4 22.1 110
KIRWIN 9550 12.0 9.7 124 13.0 10.4 125
MARQUETTE 8760 12.3 7.9 156 12.4 9.1 136
SYLVAN LAKE 8420 17.4 21.7 80 20.0 18.8 106
SYLVAN ROAD 8120 10.4 12.4 84 14.3 15.8 91
YOUNTS PEAK 8350 14.3 16.9 85 14.4 16.2 89
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Basin wide percent of average 93 106
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.7 7.0 81 6.8 7.9 86
BONE SPRINGS DIV 9350 15.6 16.0 98 15.2 14.6 104
BURGESS JUNCTION 7880 10.0 11.5 87 11.2 11.0 102
CLOUD PEAK RESERVOIR 9860 13.5 14.3 94 13.5 12.8 105
DOME LAKE 8880 10.6 13.4 79 12.5 12.7 98
GRAVE SPRINGS 8550 8.1 -M * 8.8 9.2 96
HANSEN SAWMILL 8760 7.1 6.9 103 8.3 7.6 109
MIDDLE POWDER 7760 9.4 11.8 80 9.2 11.4 81
POWDER RIVER PASS 9480 10.4 10.6 98 11.3 11.2 101
SUCKER CREEK 8880 11.4 11.8 97 13.0 12.7 102
TIE CREEK 6870 -M -M * -M 10.5 *
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Basin wide percent of average 91 99
BELLE FOURCHE
BLIND PARK 6890 7.8 10.8 72 11.9 9.6 124
NORTH RAPID CREEK 6130 8.5 -M * 9.2 -M *
WARREN PEAK 6520 11.3 10.8 105 9.8 7.7 127
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Basin wide percent of average 88 125
UPPER N. PLATTE RIVER
COLUMBINE 9400 20.8 24.5 85 21.2 23.9 89
DIVIDE PEAK 8800 18.0 20.5 88 18.6 22.1 84
ELK RIVER 8700 15.1 19.5 77 16.7 18.6 90
JOE WRIGHT 10120 18.6 21.4 87 21.7 24.2 90
NORTH FRENCH CREEK 10100 29.3 24.8 118 27.4 22.8 120
OLD BATTLE 10000 29.0 31.2 93 32.5 29.3 111
SOUTH BRUSH CREEK 8400 9.1 12.8 71 11.8 15.8 75
TOWER 10500 -M 44.2 * 37.6 35.2 107
WEBBER SPRINGS 9200 18.8 27.3 69 23.7 24.5 97
WILLOW CREEK PASS 9540 6.3 11.6 54 7.2 12.2 59
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Basin wide percent of average 85 96
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.8 25.3 82 20.1 18.8 107
CASPER MTN. 7900 11.4 15.8 72 11.7 13.5 87
DEADMAN HILL 10220 13.7 16.1 85 13.1 16.1 81
DEER PARK 9700 -M -M * 19.3 -M *
LAPRELE CREEK 8320 8.4 10.2 82 10.3 11.4 90
RENO HILL 8400 11.2 13.8 81 10.8 18.5 58
ROACH 9700 13.7 16.9 81 15.7 20.5 77
SAND LAKE 10080 25.0 32.1 78 22.2 19.7 113
SOUTH PASS 9040 14.4 16.0 90 16.1 16.6 97
WINDY PEAK 7840 6.5 8.4 77 8.0 9.1 88
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Basin wide percent of average 81 89
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.1 11.2 99 14.9 14.9 100
DIVIDE PEAK 8800 18.0 20.5 88 18.6 22.1 84
OLD BATTLE 10000 29.0 31.2 93 32.5 29.3 111
SANDSTONE RS 8150 13.2 14.6 90 18.0 18.1 99
WHISKEY PARK 8950 26.3 28.2 93 25.9 27.3 95
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Basin wide percent of average 92 98
UPPER GREEN RIVER
BIG SANDY OPENING 9100 11.5 14.3 80 10.7 16.3 66
BLIND BULL SUM 8650 23.4 29.0 81 18.1 24.0 75
EAST RIM DIVIDE 7930 11.5 13.8 83 11.7 15.2 77
ELKHART PARK G.S. 9400 12.0 13.6 88 12.3 16.0 77
GROS VENTRE SUMMIT 8775 11.0 15.4 71 12.2 16.0 76
KENDALL R.S. 7740 13.7 14.6 94 14.3 15.6 92
LOOMIS PARK 8240 13.5 17.3 78 16.3 18.9 86
NEW FORK LAKE 8340 10.5 11.1 95 9.9 14.5 68
SNIDER BASIN 8250 11.0 14.6 75 11.7 15.2 77
SPRING CREEK DIVIDE 9000 22.4 27.6 81 21.0 27.5 76
TRIPLE PEAK 8500 20.3 25.3 80 21.1 31.1 68
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Basin wide percent of average 82 76
LOWER GREEN RIVER
HAMS FORK 7840 9.4 12.2 77 10.3 13.4 77
HEWINTA 9500 9.2 11.1 83 13.7 12.6 109
HICKERSON PARK 9150 9.9 6.6 150 11.4 9.1 125
HOLE-IN-ROCK 9150 7.1 6.2 115 10.1 9.1 111
INDIAN CREEK 9425 23.1 28.1 82 18.0 25.9 69
KELLEY R.S. 8180 14.5 16.9 86 15.4 18.8 82
STEEL CREEK PARK 10100 14.5 15.9 91 16.9 12.4 136
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Basin wide percent of average 90 95
UPPER BEAR RIVER
BUG LAKE 7950 18.5 20.6 90 20.1 19.0 106
HAYDEN FORK 9400 11.0 16.2 68 18.6 18.5 101
KELLEY R.S. 8180 14.5 16.9 86 15.4 18.8 82
LILY LAKE 9050 13.2 12.9 102 16.0 14.3 112
MONTE CRISTO 8960 -M 28.9 * -M 24.9 *
SALT RIVER SUMMIT 7600 14.1 14.1 100 17.1 16.9 101
TRIAL LAKE 9960 18.9 24.6 77 20.7 23.3 89
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Basin wide percent of average 86 97
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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.