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 WEDNESDAY: MARCH 4 , 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 14.9 15.9 94 16.9 20.4 83
COTTONWOOD CREEK 7600 18.2 19.2 95 19.3 22.6 85
GRANITE CREEK 6770 15.3 15.8 97 17.3 21.4 81
GRASSY LAKE 7265 27.3 30.3 90 28.1 33.0 85
GROS VENTRE SUMMIT 8775 9.4 13.2 71 10.4 14.4 72
LEWIS LAKE DIVIDE 7860 24.6 30.2 81 26.2 33.6 78
PHILLIPS BENCH 8200 23.0 24.8 93 23.2 26.5 88
SALT RIVER SUMMIT 7600 13.2 12.4 106 14.9 15.3 97
SNAKE RIVER STATION 6920 14.5 16.5 88 17.4 23.2 75
SPRING CREEK DIVIDE 9000 18.7 23.8 79 18.0 24.5 73
THUMB DIVIDE 7980 13.3 14.6 91 14.6 19.0 77
TOGWOTEE PASS 9580 21.5 21.3 101 19.9 25.1 79
TWO OCEAN PLATEAU 9360 22.7 22.7 100 22.4 28.1 80
WILLOW CREEK 8450 23.4 26.4 89 26.3 29.0 91
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Basin wide percent of average 91 82
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 16.2 20.3 80 14.1 15.4 92
BLACK BEAR 7950 32.1 32.5 99 -M 34.4 *
CANYON 7940 11.0 11.0 100 12.4 12.3 101
FISHER CREEK 9100 25.8 30.9 83 23.2 31.3 74
MADISON PLATEAU 7750 17.3 21.1 82 18.6 22.3 83
NORTHEAST ENTRANCE 7350 6.3 8.2 77 10.5 10.4 101
PARKER PEAK 9400 15.2 18.4 83 13.3 13.4 99
SYLVAN LAKE 8420 13.9 18.9 74 16.7 16.6 101
THUMB DIVIDE 7980 13.3 14.6 91 14.6 19.0 77
TWO OCEAN PLATEAU 9360 22.7 22.7 100 22.4 28.1 80
WHISKEY CREEK 6800 12.1 14.8 82 14.8 18.4 80
WHITE MILL 8700 19.3 21.7 89 17.7 24.3 73
WOLVERINE 7650 8.3 10.3 81 8.8 11.2 79
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Basin wide percent of average 87 84
WIND RIVER
BURROUGHS CREEK 8750 12.3 13.3 92 13.5 14.3 94
COLD SPRINGS 9630 8.0 7.2 111 8.8 8.6 102
DEER PARK 9700 -M -M * 16.1 -M *
HOBBS PARK 10100 11.1 12.4 90 9.9 11.5 86
LITTLE WARM 9620 8.6 9.5 91 10.5 11.0 95
SOUTH PASS 9040 11.7 14.3 82 12.8 14.1 91
ST. LAWRENCE ALT 8620 7.6 6.4 119 7.5 8.2 91
TOGWOTEE PASS 9580 21.5 21.3 101 19.9 25.1 79
TOWNSEND CREEK 8700 8.5 8.2 104 10.0 10.1 99
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Basin wide percent of average 96 90
BIGHORN BASIN
BALD MTN. 9375 16.6 17.4 95 14.8 14.4 103
BEAR TRAP MEADOW 7900 5.2 6.0 87 5.3 6.5 82
BLACKWATER 9780 17.3 18.5 94 15.5 15.5 100
BONE SPRINGS DIV 9350 13.8 13.7 101 13.8 12.0 115
EVENING STAR 9200 19.0 23.0 83 20.6 19.4 106
GRAVE SPRINGS 8550 7.1 -M * 7.5 7.6 99
KIRWIN 9550 10.3 8.3 124 11.6 8.8 132
MARQUETTE 8760 10.4 6.7 155 10.7 7.3 147
MIDDLE POWDER 7760 8.0 10.0 80 7.9 9.5 83
OWL CREEK 8975 5.2 3.8 137 5.2 5.0 104
POWDER RIVER PASS 9480 8.8 9.0 98 9.8 9.6 102
SHELL CREEK 9580 12.1 12.9 94 9.3 10.8 86
SYLVAN LAKE 8420 13.9 18.9 74 16.7 16.6 101
SYLVAN ROAD 8120 8.5 11.4 75 12.2 13.9 88
TIMBER CREEK 7950 6.8 5.1 133 8.3 5.3 157
YOUNTS PEAK 8350 12.6 15.1 83 12.5 14.2 88
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Basin wide percent of average 94 103
SHOSHONE RIVER
BLACKWATER 9780 17.3 18.5 94 15.5 15.5 100
EVENING STAR 9200 19.0 23.0 83 20.6 19.4 106
KIRWIN 9550 10.3 8.3 124 11.6 8.8 132
MARQUETTE 8760 10.4 6.7 155 10.7 7.3 147
SYLVAN LAKE 8420 13.9 18.9 74 16.7 16.6 101
SYLVAN ROAD 8120 8.5 11.4 75 12.2 13.9 88
YOUNTS PEAK 8350 12.6 15.1 83 12.5 14.2 88
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Basin wide percent of average 90 104
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.2 6.0 87 5.3 6.5 82
BONE SPRINGS DIV 9350 13.8 13.7 101 13.8 12.0 115
BURGESS JUNCTION 7880 9.1 9.9 92 10.3 8.9 116
CLOUD PEAK RESERVOIR 9860 11.8 11.5 103 11.8 10.6 111
DOME LAKE 8880 9.1 11.6 78 11.3 10.7 106
GRAVE SPRINGS 8550 7.1 -M * 7.5 7.6 99
HANSEN SAWMILL 8760 6.4 5.9 108 7.4 6.2 119
MIDDLE POWDER 7760 8.0 10.0 80 7.9 9.5 83
POWDER RIVER PASS 9480 8.8 9.0 98 9.8 9.6 102
SUCKER CREEK 8880 10.5 10.0 105 11.9 10.8 110
TIE CREEK 6870 6.6 -M * 10.3 8.5 121
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Basin wide percent of average 94 106
BELLE FOURCHE
BLIND PARK 6890 8.9 9.3 96 11.5 7.8 147
NORTH RAPID CREEK 6130 9.4 -M * -M -M *
WARREN PEAK 6520 11.5 9.3 124 -M 6.4 *
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Basin wide percent of average 110 147*
UPPER N. PLATTE RIVER
COLUMBINE 9400 19.5 21.5 91 19.9 20.9 95
DIVIDE PEAK 8800 15.2 17.2 88 16.5 19.1 86
ELK RIVER 8700 14.2 17.1 83 14.9 15.9 94
JOE WRIGHT 10120 17.1 17.9 96 19.8 20.7 96
NORTH FRENCH CREEK 10100 24.7 20.9 118 22.9 19.3 119
OLD BATTLE 10000 25.4 26.7 95 28.7 25.1 114
SOUTH BRUSH CREEK 8400 9.7 9.8 99 10.4 13.2 79
TOWER 10500 39.2 38.1 103 32.1 30.6 105
WEBBER SPRINGS 9200 17.0 22.9 74 21.1 21.1 100
WILLOW CREEK PASS 9540 5.8 9.5 61 6.6 10.2 65
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Basin wide percent of average 93 98
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.9 20.5 78 16.4 15.9 103
CASPER MTN. 7900 11.1 12.6 88 10.6 11.1 95
DEADMAN HILL 10220 11.5 13.8 83 10.9 13.4 81
DEER PARK 9700 -M -M * 16.1 -M *
LAPRELE CREEK 8320 8.2 8.6 95 9.3 9.4 99
RENO HILL 8400 10.6 11.1 95 9.7 15.0 65
ROACH 9700 12.0 14.3 84 13.6 17.7 77
SAND LAKE 10080 20.5 27.4 75 18.6 16.9 110
SOUTH PASS 9040 11.7 14.3 82 12.8 14.1 91
WINDY PEAK 7840 6.1 6.5 94 7.2 7.3 99
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Basin wide percent of average 83 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.7 10.1 116 13.2 12.9 102
DIVIDE PEAK 8800 15.2 17.2 88 16.5 19.1 86
OLD BATTLE 10000 25.4 26.7 95 28.7 25.1 114
SANDSTONE RS 8150 13.2 12.5 106 16.3 15.7 104
WHISKEY PARK 8950 -M 24.2 * -M 23.1 *
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Basin wide percent of average 98 103
UPPER GREEN RIVER
BIG SANDY OPENING 9100 9.6 12.4 77 8.8 14.7 60
BLIND BULL SUM 8650 19.9 24.9 80 15.4 21.3 72
EAST RIM DIVIDE 7930 8.8 12.3 72 8.9 13.8 64
ELKHART PARK G.S. 9400 9.8 11.7 84 10.2 14.5 70
GROS VENTRE SUMMIT 8775 9.4 13.2 71 10.4 14.4 72
KENDALL R.S. 7740 11.7 12.9 91 11.7 14.1 83
LOOMIS PARK 8240 11.1 15.2 73 12.6 17.0 74
NEW FORK LAKE 8340 8.4 10.1 83 8.5 13.1 65
SNIDER BASIN 8250 9.6 13.1 73 9.9 13.8 72
SPRING CREEK DIVIDE 9000 18.7 23.8 79 18.0 24.5 73
TRIPLE PEAK 8500 17.9 22.2 81 18.1 28.3 64
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Basin wide percent of average 79 70
LOWER GREEN RIVER
HAMS FORK 7840 9.9 10.8 92 8.9 12.1 74
HEWINTA 9500 9.7 8.8 110 12.6 10.5 120
HICKERSON PARK 9150 9.2 5.2 177 10.1 7.4 136
HOLE-IN-ROCK 9150 6.9 4.7 147 9.2 7.4 124
INDIAN CREEK 9425 20.5 23.6 87 15.9 22.9 69
KELLEY R.S. 8180 13.3 14.6 91 13.7 17.0 81
STEEL CREEK PARK 10100 12.7 13.0 98 14.9 10.5 142
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Basin wide percent of average 102 97
UPPER BEAR RIVER
BUG LAKE 7950 19.4 17.4 111 18.4 16.3 113
HAYDEN FORK 9400 11.9 14.1 84 16.9 15.6 108
KELLEY R.S. 8180 13.3 14.6 91 13.7 17.0 81
LILY LAKE 9050 12.2 10.9 112 14.3 12.0 119
MONTE CRISTO 8960 27.2 24.1 113 23.2 21.3 109
SALT RIVER SUMMIT 7600 13.2 12.4 106 14.9 15.3 97
TRIAL LAKE 9960 18.6 21.7 86 19.3 20.1 96
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Basin wide percent of average 101 103
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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.