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: MARCH 30 , 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 16.5 17.7 93 20.2 22.6 89
COTTONWOOD CREEK 7600 21.0 24.2 87 23.8 25.5 93
GRANITE CREEK 6770 16.9 18.6 91 21.0 23.8 88
GRASSY LAKE 7265 30.7 35.9 86 33.3 37.7 88
GROS VENTRE SUMMIT 8775 11.7 15.6 75 12.8 16.2 79
LEWIS LAKE DIVIDE 7860 30.2 35.4 85 31.7 38.3 83
PHILLIPS BENCH 8200 26.6 29.1 91 26.3 30.3 87
SALT RIVER SUMMIT 7600 15.2 14.4 106 18.3 17.2 106
SNAKE RIVER STATION 6920 16.8 18.7 90 21.1 26.4 80
SPRING CREEK DIVIDE 9000 22.5 28.0 80 21.9 27.8 79
THUMB DIVIDE 7980 16.0 17.0 94 17.2 21.1 82
TOGWOTEE PASS 9580 25.4 24.9 102 23.9 28.7 83
TWO OCEAN PLATEAU 9360 27.4 26.6 103 26.6 31.2 85
WILLOW CREEK 8450 27.8 30.3 92 31.8 32.6 98
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Basin wide percent of average 91 87
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 19.2 23.6 81 16.5 18.0 92
BLACK BEAR 7950 38.7 38.1 102 34.0 40.8 83
CANYON 7940 13.0 13.0 100 14.7 14.3 103
FISHER CREEK 9100 31.0 35.7 87 26.2 36.7 71
MADISON PLATEAU 7750 20.9 24.6 85 22.6 26.4 86
NORTHEAST ENTRANCE 7350 6.9 9.2 75 12.0 11.8 102
PARKER PEAK 9400 18.9 21.6 88 16.4 15.5 106
SYLVAN LAKE 8420 17.9 22.1 81 20.5 19.1 107
THUMB DIVIDE 7980 16.0 17.0 94 17.2 21.1 82
TWO OCEAN PLATEAU 9360 27.4 26.6 103 26.6 31.2 85
WHISKEY CREEK 6800 14.3 17.3 83 18.7 21.9 85
WHITE MILL 8700 23.4 24.9 94 21.4 28.4 75
WOLVERINE 7650 9.3 11.6 80 10.2 12.7 80
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Basin wide percent of average 90 86
WIND RIVER
BURROUGHS CREEK 8750 15.0 14.9 101 16.5 16.5 100
COLD SPRINGS 9630 11.2 8.3 135 11.9 10.5 113
DEER PARK 9700 -M -M * 20.7 -M *
HOBBS PARK 10100 15.0 14.9 101 13.4 14.0 96
LITTLE WARM 9620 11.1 11.5 97 13.3 13.1 102
SOUTH PASS 9040 15.6 16.3 96 17.5 16.9 104
ST. LAWRENCE ALT 8620 10.0 7.5 133 9.9 10.1 98
TOGWOTEE PASS 9580 25.4 24.9 102 23.9 28.7 83
TOWNSEND CREEK 8700 11.8 9.8 120 13.7 12.3 111
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Basin wide percent of average 106 98
BIGHORN BASIN
BALD MTN. 9375 18.7 20.3 92 16.3 17.2 95
BEAR TRAP MEADOW 7900 6.3 7.1 89 7.0 8.1 86
BLACKWATER 9780 20.5 22.1 93 18.2 17.9 102
BONE SPRINGS DIV 9350 16.3 16.3 100 15.5 14.9 104
EVENING STAR 9200 23.1 26.9 86 24.9 22.5 111
GRAVE SPRINGS 8550 9.4 -M * 9.9 9.5 104
KIRWIN 9550 12.5 9.9 126 13.7 10.7 128
MARQUETTE 8760 12.8 8.0 160 13.0 9.3 140
MIDDLE POWDER 7760 10.7 12.0 89 10.3 11.6 89
OWL CREEK 8975 7.4 4.5 164 6.7 6.1 110
POWDER RIVER PASS 9480 10.9 10.8 101 11.5 11.4 101
SHELL CREEK 9580 13.7 14.9 92 10.5 12.9 81
SYLVAN LAKE 8420 17.9 22.1 81 20.5 19.1 107
SYLVAN ROAD 8120 10.6 12.5 85 14.6 16.0 91
TIMBER CREEK 7950 8.6 6.2 139 10.3 6.9 149
YOUNTS PEAK 8350 14.7 17.1 86 14.7 16.5 89
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Basin wide percent of average 97 103
SHOSHONE RIVER
BLACKWATER 9780 20.5 22.1 93 18.2 17.9 102
EVENING STAR 9200 23.1 26.9 86 24.9 22.5 111
KIRWIN 9550 12.5 9.9 126 13.7 10.7 128
MARQUETTE 8760 12.8 8.0 160 13.0 9.3 140
SYLVAN LAKE 8420 17.9 22.1 81 20.5 19.1 107
SYLVAN ROAD 8120 10.6 12.5 85 14.6 16.0 91
YOUNTS PEAK 8350 14.7 17.1 86 14.7 16.5 89
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Basin wide percent of average 95 107
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.3 7.1 89 7.0 8.1 86
BONE SPRINGS DIV 9350 16.3 16.3 100 15.5 14.9 104
BURGESS JUNCTION 7880 10.5 11.7 90 11.5 11.3 102
CLOUD PEAK RESERVOIR 9860 14.1 14.7 96 14.1 13.1 108
DOME LAKE 8880 10.9 13.6 80 13.0 13.0 100
GRAVE SPRINGS 8550 9.4 -M * 9.9 9.5 104
HANSEN SAWMILL 8760 7.6 7.0 109 9.2 7.8 118
MIDDLE POWDER 7760 10.7 12.0 89 10.3 11.6 89
POWDER RIVER PASS 9480 10.9 10.8 101 11.5 11.4 101
SUCKER CREEK 8880 12.0 12.0 100 13.1 12.9 102
TIE CREEK 6870 7.3 -M * 12.2 10.8 113
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Basin wide percent of average 94 102
BELLE FOURCHE
BLIND PARK 6890 8.6 11.0 78 12.7 9.8 130
NORTH RAPID CREEK 6130 9.6 -M * 10.2 -M *
WARREN PEAK 6520 12.4 11.0 113 10.4 7.9 132
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Basin wide percent of average 95 131
UPPER N. PLATTE RIVER
COLUMBINE 9400 20.9 24.7 85 21.2 24.2 88
DIVIDE PEAK 8800 19.5 21.0 93 20.0 22.5 89
ELK RIVER 8700 15.8 19.8 80 17.6 19.0 93
JOE WRIGHT 10120 19.1 21.8 88 22.2 24.7 90
NORTH FRENCH CREEK 10100 30.2 25.3 119 28.5 23.2 123
OLD BATTLE 10000 30.6 31.8 96 33.7 29.8 113
SOUTH BRUSH CREEK 8400 9.3 13.1 71 12.3 16.1 76
TOWER 10500 44.1 44.9 98 37.5 35.8 105
WEBBER SPRINGS 9200 19.7 27.9 71 24.6 24.9 99
WILLOW CREEK PASS 9540 6.7 11.8 57 6.7 12.4 54
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Basin wide percent of average 89 96
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.3 26.0 82 20.6 19.1 108
CASPER MTN. 7900 12.5 16.3 77 12.4 13.8 90
DEADMAN HILL 10220 13.6 16.4 83 13.3 16.5 81
DEER PARK 9700 -M -M * 20.7 -M *
LAPRELE CREEK 8320 9.2 10.5 88 11.1 11.6 96
RENO HILL 8400 12.2 14.2 86 11.6 18.9 61
ROACH 9700 14.2 17.2 83 16.4 20.9 78
SAND LAKE 10080 26.1 32.7 80 23.1 20.1 115
SOUTH PASS 9040 15.6 16.3 96 17.5 16.9 104
WINDY PEAK 7840 7.4 8.7 85 9.0 9.3 97
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Basin wide percent of average 83 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.9 11.2 106 15.4 15.1 102
DIVIDE PEAK 8800 19.5 21.0 93 20.0 22.5 89
OLD BATTLE 10000 30.6 31.8 96 33.7 29.8 113
SANDSTONE RS 8150 14.2 14.8 96 18.9 18.4 103
WHISKEY PARK 8950 27.6 28.7 96 27.0 27.8 97
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Basin wide percent of average 97 101
UPPER GREEN RIVER
BIG SANDY OPENING 9100 12.1 14.5 83 11.3 16.5 68
BLIND BULL SUM 8650 24.3 29.5 82 19.2 24.4 79
EAST RIM DIVIDE 7930 12.3 13.9 88 12.4 15.4 81
ELKHART PARK G.S. 9400 12.6 13.8 91 13.0 16.2 80
GROS VENTRE SUMMIT 8775 11.7 15.6 75 12.8 16.2 79
KENDALL R.S. 7740 14.2 14.7 97 14.9 15.8 94
LOOMIS PARK 8240 13.0 17.5 74 17.0 19.1 89
NEW FORK LAKE 8340 11.2 11.2 100 10.3 14.7 70
SNIDER BASIN 8250 12.3 14.8 83 12.7 15.4 82
SPRING CREEK DIVIDE 9000 22.5 28.0 80 21.9 27.8 79
TRIPLE PEAK 8500 21.8 25.7 85 22.4 31.5 71
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Basin wide percent of average 84 79
LOWER GREEN RIVER
HAMS FORK 7840 10.8 12.3 88 11.7 13.6 86
HEWINTA 9500 10.5 11.3 93 14.6 12.9 113
HICKERSON PARK 9150 11.5 6.8 169 12.8 9.4 136
HOLE-IN-ROCK 9150 8.3 6.4 130 11.1 9.4 118
INDIAN CREEK 9425 25.1 28.7 87 19.9 26.3 76
KELLEY R.S. 8180 15.8 17.1 92 16.6 19.0 87
STEEL CREEK PARK 10100 16.0 16.3 98 17.6 12.6 140
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Basin wide percent of average 99 101
UPPER BEAR RIVER
BUG LAKE 7950 19.7 21.0 94 21.0 19.4 108
HAYDEN FORK 9400 12.6 16.4 77 20.0 18.8 106
KELLEY R.S. 8180 15.8 17.1 92 16.6 19.0 87
LILY LAKE 9050 14.6 13.2 111 17.4 14.6 119
MONTE CRISTO 8960 30.2 29.5 102 26.7 25.4 105
SALT RIVER SUMMIT 7600 15.2 14.4 106 18.3 17.2 106
TRIAL LAKE 9960 20.7 24.8 83 22.7 23.7 96
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Basin wide percent of average 94 103
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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.