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 THURSDAY: MARCH 19 , 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 15.2 17.0 89 17.6 21.7 81
COTTONWOOD CREEK 7600 19.5 22.3 87 20.7 24.3 85
GRANITE CREEK 6770 15.8 17.5 90 18.2 22.8 80
GRASSY LAKE 7265 28.0 33.8 83 29.5 35.8 82
GROS VENTRE SUMMIT 8775 9.8 14.7 67 10.9 15.4 71
LEWIS LAKE DIVIDE 7860 25.4 33.5 76 27.2 36.3 75
PHILLIPS BENCH 8200 23.8 27.6 86 24.0 28.7 84
SALT RIVER SUMMIT 7600 14.0 13.6 103 15.9 16.4 97
SNAKE RIVER STATION 6920 15.1 18.0 84 18.0 25.1 72
SPRING CREEK DIVIDE 9000 19.8 26.4 75 19.2 26.4 73
THUMB DIVIDE 7980 14.1 16.1 88 15.3 20.3 75
TOGWOTEE PASS 9580 22.6 23.4 97 20.9 27.2 77
TWO OCEAN PLATEAU 9360 23.9 25.2 95 23.9 29.8 80
WILLOW CREEK 8450 24.5 28.9 85 27.8 31.1 89
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Basin wide percent of average 85 80
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 17.2 22.3 77 15.0 16.9 89
BLACK BEAR 7950 34.3 36.0 95 31.1 38.1 82
CANYON 7940 12.0 12.2 98 13.1 13.4 98
FISHER CREEK 9100 27.5 33.8 81 24.7 34.4 72
MADISON PLATEAU 7750 18.8 23.2 81 20.0 24.6 81
NORTHEAST ENTRANCE 7350 6.7 8.9 75 10.9 11.2 97
PARKER PEAK 9400 16.4 20.4 80 14.6 14.6 100
SYLVAN LAKE 8420 15.5 20.8 75 18.2 18.0 101
THUMB DIVIDE 7980 14.1 16.1 88 15.3 20.3 75
TWO OCEAN PLATEAU 9360 23.9 25.2 95 23.9 29.8 80
WHISKEY CREEK 6800 13.2 16.4 80 16.1 20.4 79
WHITE MILL 8700 20.3 23.9 85 18.7 26.6 70
WOLVERINE 7650 9.1 11.2 81 9.1 12.0 76
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Basin wide percent of average 85 82
WIND RIVER
BURROUGHS CREEK 8750 12.9 14.4 90 14.1 15.6 90
COLD SPRINGS 9630 8.6 7.9 109 9.5 9.7 98
DEER PARK 9700 -M -M * 18.0 -M *
HOBBS PARK 10100 12.6 13.9 91 11.3 12.9 88
LITTLE WARM 9620 9.1 10.7 85 11.2 12.3 91
SOUTH PASS 9040 13.6 15.5 88 15.1 15.7 96
ST. LAWRENCE ALT 8620 8.7 7.1 123 8.5 9.3 91
TOGWOTEE PASS 9580 22.6 23.4 97 20.9 27.2 77
TOWNSEND CREEK 8700 10.6 9.2 115 11.9 11.4 104
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Basin wide percent of average 97 90
BIGHORN BASIN
BALD MTN. 9375 17.8 19.2 93 15.7 16.0 98
BEAR TRAP MEADOW 7900 5.7 6.7 85 5.8 7.4 78
BLACKWATER 9780 18.2 20.7 88 16.2 16.9 96
BONE SPRINGS DIV 9350 14.6 15.3 95 14.4 13.7 105
EVENING STAR 9200 20.3 25.4 80 22.2 21.1 105
GRAVE SPRINGS 8550 8.4 -M * 8.7 8.7 100
KIRWIN 9550 10.9 9.2 118 12.1 9.9 122
MARQUETTE 8760 11.8 7.5 157 12.0 8.5 141
MIDDLE POWDER 7760 9.7 11.2 87 9.1 10.7 85
OWL CREEK 8975 6.4 4.2 152 6.0 5.7 105
POWDER RIVER PASS 9480 9.6 10.1 95 10.6 10.6 100
SHELL CREEK 9580 12.7 14.1 90 9.7 12.1 80
SYLVAN LAKE 8420 15.5 20.8 75 18.2 18.0 101
SYLVAN ROAD 8120 9.2 12.3 75 12.9 15.1 85
TIMBER CREEK 7950 7.7 5.8 133 9.2 6.2 148
YOUNTS PEAK 8350 12.8 16.3 79 13.0 15.5 84
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Basin wide percent of average 92 100
SHOSHONE RIVER
BLACKWATER 9780 18.2 20.7 88 16.2 16.9 96
EVENING STAR 9200 20.3 25.4 80 22.2 21.1 105
KIRWIN 9550 10.9 9.2 118 12.1 9.9 122
MARQUETTE 8760 11.8 7.5 157 12.0 8.5 141
SYLVAN LAKE 8420 15.5 20.8 75 18.2 18.0 101
SYLVAN ROAD 8120 9.2 12.3 75 12.9 15.1 85
YOUNTS PEAK 8350 12.8 16.3 79 13.0 15.5 84
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Basin wide percent of average 88 102
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.7 6.7 85 5.8 7.4 78
BONE SPRINGS DIV 9350 14.6 15.3 95 14.4 13.7 105
BURGESS JUNCTION 7880 9.8 11.0 89 10.9 10.3 106
CLOUD PEAK RESERVOIR 9860 12.9 13.4 96 12.9 12.0 108
DOME LAKE 8880 10.2 12.8 80 12.0 12.0 100
GRAVE SPRINGS 8550 8.4 -M * 8.7 8.7 100
HANSEN SAWMILL 8760 7.1 6.6 108 7.9 7.1 111
MIDDLE POWDER 7760 9.7 11.2 87 9.1 10.7 85
POWDER RIVER PASS 9480 9.6 10.1 95 10.6 10.6 100
SUCKER CREEK 8880 11.2 11.2 100 12.8 12.0 107
TIE CREEK 6870 7.2 -M * 11.1 9.8 113
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Basin wide percent of average 92 102
BELLE FOURCHE
BLIND PARK 6890 9.0 10.3 87 11.8 9.0 131
NORTH RAPID CREEK 6130 9.5 -M * 9.5 -M *
WARREN PEAK 6520 12.3 10.3 119 9.6 7.2 133
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Basin wide percent of average 103 132
UPPER N. PLATTE RIVER
COLUMBINE 9400 21.0 23.8 88 20.7 22.8 91
DIVIDE PEAK 8800 17.3 19.3 90 17.9 21.1 85
ELK RIVER 8700 15.8 18.8 84 16.2 17.6 92
JOE WRIGHT 10120 18.1 20.2 90 21.1 23.0 92
NORTH FRENCH CREEK 10100 27.0 23.5 115 25.3 21.6 117
OLD BATTLE 10000 27.7 29.5 94 31.2 27.8 112
SOUTH BRUSH CREEK 8400 9.7 11.7 83 11.3 14.9 76
TOWER 10500 -M 42.2 * 36.3 33.6 108
WEBBER SPRINGS 9200 18.0 25.7 70 22.8 23.3 98
WILLOW CREEK PASS 9540 6.3 10.9 58 6.6 11.5 57
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Basin wide percent of average 88 96
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 19.1 23.5 81 18.7 17.8 105
CASPER MTN. 7900 12.2 14.5 84 11.4 12.7 90
DEADMAN HILL 10220 13.0 15.4 84 12.5 15.1 83
DEER PARK 9700 -M -M * 18.0 -M *
LAPRELE CREEK 8320 8.8 9.7 91 10.0 10.7 93
RENO HILL 8400 11.4 12.8 89 10.5 17.3 61
ROACH 9700 13.3 16.0 83 15.0 19.5 77
SAND LAKE 10080 23.3 30.6 76 20.8 18.7 111
SOUTH PASS 9040 13.6 15.5 88 15.1 15.7 96
WINDY PEAK 7840 7.0 7.9 89 7.8 8.5 92
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Basin wide percent of average 83 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.2 10.9 121 14.5 14.2 102
DIVIDE PEAK 8800 17.3 19.3 90 17.9 21.1 85
OLD BATTLE 10000 27.7 29.5 94 31.2 27.8 112
SANDSTONE RS 8150 14.7 13.9 106 17.5 17.3 101
WHISKEY PARK 8950 26.0 26.9 97 24.7 25.8 96
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Basin wide percent of average 98 100
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.3 13.7 75 9.6 15.7 61
BLIND BULL SUM 8650 20.7 27.7 75 16.3 23.1 71
EAST RIM DIVIDE 7930 9.7 13.4 72 9.6 14.7 65
ELKHART PARK G.S. 9400 10.7 13.1 82 11.2 15.5 72
GROS VENTRE SUMMIT 8775 9.8 14.7 67 10.9 15.4 71
KENDALL R.S. 7740 12.2 14.5 84 12.3 15.1 81
LOOMIS PARK 8240 11.3 16.8 67 13.5 18.3 74
NEW FORK LAKE 8340 9.1 10.8 84 9.1 14.0 65
SNIDER BASIN 8250 10.8 14.2 76 10.7 14.7 73
SPRING CREEK DIVIDE 9000 19.8 26.4 75 19.2 26.4 73
TRIPLE PEAK 8500 19.1 24.3 79 19.3 30.1 64
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Basin wide percent of average 76 70
LOWER GREEN RIVER
HAMS FORK 7840 9.9 12.0 83 9.6 12.9 74
HEWINTA 9500 10.6 10.4 102 13.2 11.9 111
HICKERSON PARK 9150 10.7 6.1 175 11.3 8.5 133
HOLE-IN-ROCK 9150 7.7 5.7 135 9.9 8.5 116
INDIAN CREEK 9425 21.6 26.8 81 16.9 24.9 68
KELLEY R.S. 8180 14.1 16.2 87 14.4 18.2 79
STEEL CREEK PARK 10100 13.6 14.8 92 16.1 11.8 136
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Basin wide percent of average 96 95
UPPER BEAR RIVER
BUG LAKE 7950 20.7 19.5 106 19.5 18.0 108
HAYDEN FORK 9400 12.3 15.7 78 17.9 17.5 102
KELLEY R.S. 8180 14.1 16.2 87 14.4 18.2 79
LILY LAKE 9050 13.2 12.2 108 15.3 13.5 113
MONTE CRISTO 8960 29.0 27.2 107 24.6 23.6 104
SALT RIVER SUMMIT 7600 14.0 13.6 103 15.9 16.4 97
TRIAL LAKE 9960 19.3 24.0 80 20.2 22.2 91
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Basin wide percent of average 95 99
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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.