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 TUESDAY: MARCH 17 , 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 15.0 16.8 89 17.5 21.5 81
COTTONWOOD CREEK 7600 19.3 21.9 88 20.5 24.1 85
GRANITE CREEK 6770 15.7 17.3 91 18.1 22.6 80
GRASSY LAKE 7265 27.8 33.4 83 29.6 35.4 84
GROS VENTRE SUMMIT 8775 9.6 14.6 66 10.6 15.3 69
LEWIS LAKE DIVIDE 7860 25.5 33.1 77 27.3 35.9 76
PHILLIPS BENCH 8200 23.8 27.3 87 24.1 28.4 85
SALT RIVER SUMMIT 7600 14.0 13.4 104 16.0 16.2 99
SNAKE RIVER STATION 6920 15.1 17.8 85 17.9 24.8 72
SPRING CREEK DIVIDE 9000 19.8 26.1 76 19.2 26.2 73
THUMB DIVIDE 7980 14.0 16.0 88 15.2 20.1 76
TOGWOTEE PASS 9580 22.4 23.2 97 20.8 26.9 77
TWO OCEAN PLATEAU 9360 23.6 24.9 95 23.7 29.6 80
WILLOW CREEK 8450 24.7 28.6 86 27.5 30.8 89
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Basin wide percent of average 86 80
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 17.2 22.0 78 15.1 16.7 90
BLACK BEAR 7950 33.8 35.6 95 -M 37.6 *
CANYON 7940 11.9 12.0 99 13.0 13.3 98
FISHER CREEK 9100 27.2 33.5 81 24.5 34.0 72
MADISON PLATEAU 7750 18.2 22.9 79 19.5 24.3 80
NORTHEAST ENTRANCE 7350 6.7 8.8 76 10.9 11.1 98
PARKER PEAK 9400 16.2 20.2 80 14.4 14.4 100
SYLVAN LAKE 8420 15.4 20.6 75 18.0 17.8 101
THUMB DIVIDE 7980 14.0 16.0 88 15.2 20.1 76
TWO OCEAN PLATEAU 9360 23.6 24.9 95 23.7 29.6 80
WHISKEY CREEK 6800 12.6 16.2 78 15.6 20.2 77
WHITE MILL 8700 20.2 23.7 85 18.6 26.3 71
WOLVERINE 7650 9.1 11.1 82 9.1 11.9 76
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Basin wide percent of average 85 82
WIND RIVER
BURROUGHS CREEK 8750 12.8 14.3 90 13.9 15.4 90
COLD SPRINGS 9630 8.4 7.8 108 9.1 9.5 96
DEER PARK 9700 -M -M * 16.9 -M *
HOBBS PARK 10100 11.7 13.7 85 10.5 12.7 83
LITTLE WARM 9620 9.0 10.5 86 10.9 12.1 90
SOUTH PASS 9040 12.3 15.3 80 13.7 15.5 88
ST. LAWRENCE ALT 8620 8.1 7.1 114 8.0 9.1 88
TOGWOTEE PASS 9580 22.4 23.2 97 20.8 26.9 77
TOWNSEND CREEK 8700 9.1 9.1 100 10.7 11.2 96
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Basin wide percent of average 93 87
BIGHORN BASIN
BALD MTN. 9375 17.6 19.0 93 15.6 15.8 99
BEAR TRAP MEADOW 7900 5.7 6.6 86 6.2 7.3 85
BLACKWATER 9780 18.0 20.5 88 16.1 16.7 96
BONE SPRINGS DIV 9350 14.5 15.1 96 14.3 13.5 106
EVENING STAR 9200 20.2 25.1 80 21.9 20.9 105
GRAVE SPRINGS 8550 8.1 -M * 8.3 8.5 98
KIRWIN 9550 10.6 9.1 116 11.9 9.7 123
MARQUETTE 8760 11.1 7.4 150 11.3 8.3 136
MIDDLE POWDER 7760 9.3 11.1 84 8.8 10.5 84
OWL CREEK 8975 5.6 4.2 133 5.6 5.6 100
POWDER RIVER PASS 9480 9.7 10.0 97 10.6 10.5 101
SHELL CREEK 9580 12.7 13.9 91 9.7 11.9 82
SYLVAN LAKE 8420 15.4 20.6 75 18.0 17.8 101
SYLVAN ROAD 8120 9.1 12.3 74 12.7 14.9 85
TIMBER CREEK 7950 7.0 5.7 123 8.5 6.1 139
YOUNTS PEAK 8350 12.9 16.2 80 12.9 15.3 84
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Basin wide percent of average 91 100
SHOSHONE RIVER
BLACKWATER 9780 18.0 20.5 88 16.1 16.7 96
EVENING STAR 9200 20.2 25.1 80 21.9 20.9 105
KIRWIN 9550 10.6 9.1 116 11.9 9.7 123
MARQUETTE 8760 11.1 7.4 150 11.3 8.3 136
SYLVAN LAKE 8420 15.4 20.6 75 18.0 17.8 101
SYLVAN ROAD 8120 9.1 12.3 74 12.7 14.9 85
YOUNTS PEAK 8350 12.9 16.2 80 12.9 15.3 84
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Basin wide percent of average 88 101
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.7 6.6 86 6.2 7.3 85
BONE SPRINGS DIV 9350 14.5 15.1 96 14.3 13.5 106
BURGESS JUNCTION 7880 9.6 10.8 89 10.8 10.1 107
CLOUD PEAK RESERVOIR 9860 12.4 13.2 94 12.4 11.8 105
DOME LAKE 8880 10.1 12.7 80 11.6 11.8 98
GRAVE SPRINGS 8550 8.1 -M * 8.3 8.5 98
HANSEN SAWMILL 8760 6.9 6.6 105 7.8 7.0 111
MIDDLE POWDER 7760 9.3 11.1 84 8.8 10.5 84
POWDER RIVER PASS 9480 9.7 10.0 97 10.6 10.5 101
SUCKER CREEK 8880 10.9 11.1 98 12.6 11.8 107
TIE CREEK 6870 6.8 -M * 10.7 9.6 111
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Basin wide percent of average 92 102
BELLE FOURCHE
BLIND PARK 6890 8.8 10.2 86 11.8 8.8 134
NORTH RAPID CREEK 6130 9.4 -M * 9.5 -M *
WARREN PEAK 6520 11.7 10.2 115 9.8 7.1 138
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Basin wide percent of average 100 136
UPPER N. PLATTE RIVER
COLUMBINE 9400 20.7 23.6 88 20.9 22.6 92
DIVIDE PEAK 8800 16.8 19.0 88 17.7 20.8 85
ELK RIVER 8700 15.6 18.6 84 16.1 17.4 93
JOE WRIGHT 10120 18.0 19.9 90 21.0 22.7 93
NORTH FRENCH CREEK 10100 26.9 23.2 116 24.9 21.3 117
OLD BATTLE 10000 27.6 29.1 95 31.3 27.4 114
SOUTH BRUSH CREEK 8400 10.0 11.5 87 11.3 14.7 77
TOWER 10500 -M 41.7 * -M 33.2 *
WEBBER SPRINGS 9200 18.0 25.3 71 22.8 23.0 99
WILLOW CREEK PASS 9540 6.2 10.7 58 6.9 11.3 61
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Basin wide percent of average 88 95
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 17.6 23.0 77 17.5 17.5 100
CASPER MTN. 7900 11.8 14.2 83 11.2 12.5 90
DEADMAN HILL 10220 12.5 15.2 82 11.9 14.9 80
DEER PARK 9700 -M -M * 16.9 -M *
LAPRELE CREEK 8320 8.8 9.5 93 10.0 10.5 95
RENO HILL 8400 11.1 12.5 89 10.4 17.0 61
ROACH 9700 13.2 15.8 84 14.8 19.3 77
SAND LAKE 10080 22.3 30.2 74 19.9 18.5 108
SOUTH PASS 9040 12.3 15.3 80 13.7 15.5 88
WINDY PEAK 7840 6.7 7.7 87 7.8 8.3 94
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Basin wide percent of average 81 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.8 10.9 117 14.4 14.0 103
DIVIDE PEAK 8800 16.8 19.0 88 17.7 20.8 85
OLD BATTLE 10000 27.6 29.1 95 31.3 27.4 114
SANDSTONE RS 8150 14.4 13.8 104 17.3 17.1 101
WHISKEY PARK 8950 25.7 26.6 97 24.8 25.4 98
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Basin wide percent of average 98 101
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.2 13.6 75 9.4 15.6 60
BLIND BULL SUM 8650 20.8 27.4 76 16.2 22.9 71
EAST RIM DIVIDE 7930 9.6 13.3 72 9.6 14.6 66
ELKHART PARK G.S. 9400 10.6 12.9 82 11.0 15.3 72
GROS VENTRE SUMMIT 8775 9.6 14.6 66 10.6 15.3 69
KENDALL R.S. 7740 12.2 14.4 85 12.3 14.9 83
LOOMIS PARK 8240 11.5 16.6 69 13.5 18.1 75
NEW FORK LAKE 8340 9.1 10.8 84 9.1 13.9 65
SNIDER BASIN 8250 10.9 14.1 77 10.8 14.6 74
SPRING CREEK DIVIDE 9000 19.8 26.1 76 19.2 26.2 73
TRIPLE PEAK 8500 19.0 24.0 79 19.2 29.9 64
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Basin wide percent of average 76 70
LOWER GREEN RIVER
HAMS FORK 7840 9.9 11.9 83 9.6 12.8 75
HEWINTA 9500 10.3 10.2 101 13.0 11.7 111
HICKERSON PARK 9150 9.7 5.9 164 10.4 8.4 124
HOLE-IN-ROCK 9150 7.4 5.6 132 9.4 8.4 112
INDIAN CREEK 9425 21.7 26.4 82 17.1 24.6 70
KELLEY R.S. 8180 14.3 16.1 89 14.5 18.0 81
STEEL CREEK PARK 10100 13.1 14.6 90 16.0 11.6 138
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Basin wide percent of average 95 94
UPPER BEAR RIVER
BUG LAKE 7950 20.6 19.2 107 19.6 17.8 110
HAYDEN FORK 9400 11.9 15.5 77 17.7 17.2 103
KELLEY R.S. 8180 14.3 16.1 89 14.5 18.0 81
LILY LAKE 9050 12.5 12.0 104 14.9 13.3 112
MONTE CRISTO 8960 28.8 26.8 107 24.5 23.3 105
SALT RIVER SUMMIT 7600 14.0 13.4 104 16.0 16.2 99
TRIAL LAKE 9960 19.0 23.9 79 19.8 21.9 90
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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.