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 SATURDAY: MARCH 7 , 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 16.1 93 17.1 20.6 83
COTTONWOOD CREEK 7600 18.7 19.8 94 19.8 23.0 86
GRANITE CREEK 6770 15.7 16.1 98 17.6 21.7 81
GRASSY LAKE 7265 27.7 31.1 89 28.5 33.6 85
GROS VENTRE SUMMIT 8775 9.5 13.5 70 10.5 14.6 72
LEWIS LAKE DIVIDE 7860 24.8 30.9 80 26.4 34.1 77
PHILLIPS BENCH 8200 23.5 25.4 93 23.3 27.0 86
SALT RIVER SUMMIT 7600 13.6 12.6 108 15.3 15.5 99
SNAKE RIVER STATION 6920 14.6 16.8 87 17.6 23.6 75
SPRING CREEK DIVIDE 9000 19.1 24.4 78 18.4 24.9 74
THUMB DIVIDE 7980 13.4 14.9 90 14.7 19.3 76
TOGWOTEE PASS 9580 21.9 21.7 101 20.1 25.5 79
TWO OCEAN PLATEAU 9360 22.9 23.3 98 22.5 28.4 79
WILLOW CREEK 8450 23.9 26.9 89 26.9 29.4 91
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Basin wide percent of average 90 82
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 16.1 20.7 78 13.9 15.7 89
BLACK BEAR 7950 32.7 33.2 98 -M 35.2 *
CANYON 7940 11.2 11.2 100 12.6 12.5 101
FISHER CREEK 9100 26.2 31.5 83 23.1 31.9 72
MADISON PLATEAU 7750 17.6 21.5 82 18.8 22.7 83
NORTHEAST ENTRANCE 7350 6.4 8.4 76 10.5 10.5 100
PARKER PEAK 9400 15.6 18.9 83 13.5 13.6 99
SYLVAN LAKE 8420 14.3 19.3 74 17.1 16.9 101
THUMB DIVIDE 7980 13.4 14.9 90 14.7 19.3 76
TWO OCEAN PLATEAU 9360 22.9 23.3 98 22.5 28.4 79
WHISKEY CREEK 6800 12.2 15.1 81 14.9 18.8 79
WHITE MILL 8700 19.5 22.2 88 17.5 24.7 71
WOLVERINE 7650 8.1 10.5 77 8.8 11.3 78
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Basin wide percent of average 86 83
WIND RIVER
BURROUGHS CREEK 8750 12.5 13.6 92 13.7 14.5 94
COLD SPRINGS 9630 8.1 7.3 111 8.9 8.8 101
DEER PARK 9700 -M -M * 16.8 -M *
HOBBS PARK 10100 11.3 12.7 89 10.3 11.8 87
LITTLE WARM 9620 8.5 9.7 88 10.5 11.3 93
SOUTH PASS 9040 12.2 14.5 84 13.6 14.4 94
ST. LAWRENCE ALT 8620 7.8 6.5 120 7.5 8.4 89
TOGWOTEE PASS 9580 21.9 21.7 101 20.1 25.5 79
TOWNSEND CREEK 8700 8.8 8.4 105 10.1 10.3 98
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Basin wide percent of average 97 90
BIGHORN BASIN
BALD MTN. 9375 17.0 17.8 96 15.2 14.7 103
BEAR TRAP MEADOW 7900 5.3 6.2 85 4.9 6.7 73
BLACKWATER 9780 17.1 18.9 90 15.4 15.8 97
BONE SPRINGS DIV 9350 13.8 14.0 99 13.4 12.4 108
EVENING STAR 9200 19.2 23.5 82 21.0 19.7 107
GRAVE SPRINGS 8550 8.0 -M * 8.2 7.8 105
KIRWIN 9550 10.0 8.5 118 11.4 9.0 127
MARQUETTE 8760 10.4 6.8 153 10.6 7.6 139
MIDDLE POWDER 7760 9.1 10.2 89 8.6 9.7 89
OWL CREEK 8975 5.2 3.9 133 5.0 5.2 96
POWDER RIVER PASS 9480 9.2 9.3 99 9.6 9.8 98
SHELL CREEK 9580 12.2 13.1 93 9.6 11.1 86
SYLVAN LAKE 8420 14.3 19.3 74 17.1 16.9 101
SYLVAN ROAD 8120 8.6 11.7 74 12.5 14.1 89
TIMBER CREEK 7950 7.1 5.2 137 8.5 5.5 155
YOUNTS PEAK 8350 12.6 15.3 82 12.4 14.4 86
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Basin wide percent of average 93 102
SHOSHONE RIVER
BLACKWATER 9780 17.1 18.9 90 15.4 15.8 97
EVENING STAR 9200 19.2 23.5 82 21.0 19.7 107
KIRWIN 9550 10.0 8.5 118 11.4 9.0 127
MARQUETTE 8760 10.4 6.8 153 10.6 7.6 139
SYLVAN LAKE 8420 14.3 19.3 74 17.1 16.9 101
SYLVAN ROAD 8120 8.6 11.7 74 12.5 14.1 89
YOUNTS PEAK 8350 12.6 15.3 82 12.4 14.4 86
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Basin wide percent of average 89 103
POWDER-TONGUE
BEAR TRAP MEADOW 7900 5.3 6.2 85 4.9 6.7 73
BONE SPRINGS DIV 9350 13.8 14.0 99 13.4 12.4 108
BURGESS JUNCTION 7880 9.2 10.1 91 10.1 9.2 110
CLOUD PEAK RESERVOIR 9860 12.0 11.9 101 12.0 10.9 110
DOME LAKE 8880 9.3 11.8 79 11.5 10.9 106
GRAVE SPRINGS 8550 8.0 -M * 8.2 7.8 105
HANSEN SAWMILL 8760 6.5 6.0 108 7.6 6.4 119
MIDDLE POWDER 7760 9.1 10.2 89 8.6 9.7 89
POWDER RIVER PASS 9480 9.2 9.3 99 9.6 9.8 98
SUCKER CREEK 8880 10.6 10.2 104 11.7 11.0 106
TIE CREEK 6870 6.8 -M * 10.6 8.7 122
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Basin wide percent of average 95 105
BELLE FOURCHE
BLIND PARK 6890 9.1 9.5 96 11.5 8.1 142
NORTH RAPID CREEK 6130 9.6 -M * -M -M *
WARREN PEAK 6520 11.9 9.5 125 -M 6.5 *
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Basin wide percent of average 111 142*
UPPER N. PLATTE RIVER
COLUMBINE 9400 20.1 22.0 91 20.4 21.3 96
DIVIDE PEAK 8800 16.3 17.6 93 17.2 19.5 88
ELK RIVER 8700 15.1 17.4 87 15.5 16.2 96
JOE WRIGHT 10120 17.8 18.3 97 20.5 21.1 97
NORTH FRENCH CREEK 10100 25.5 21.5 119 23.6 19.8 119
OLD BATTLE 10000 26.9 27.3 99 29.0 25.6 113
SOUTH BRUSH CREEK 8400 10.2 10.2 100 11.0 13.6 81
TOWER 10500 -M 39.0 * -M 31.2 *
WEBBER SPRINGS 9200 17.8 23.4 76 22.1 21.6 102
WILLOW CREEK PASS 9540 6.1 9.8 62 6.6 10.4 63
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Basin wide percent of average 93 98
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.5 21.1 78 17.0 16.3 104
CASPER MTN. 7900 11.5 13.0 88 10.8 11.4 95
DEADMAN HILL 10220 12.0 14.1 85 11.6 13.7 85
DEER PARK 9700 -M -M * 16.8 -M *
LAPRELE CREEK 8320 8.5 8.8 97 9.6 9.6 100
RENO HILL 8400 11.1 11.4 97 10.1 15.5 65
ROACH 9700 12.6 14.7 86 14.3 18.0 79
SAND LAKE 10080 21.3 28.1 76 19.2 17.2 112
SOUTH PASS 9040 12.2 14.5 84 13.6 14.4 94
WINDY PEAK 7840 6.5 6.8 96 7.5 7.6 99
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Basin wide percent of average 85 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.3 10.3 119 14.0 13.1 107
DIVIDE PEAK 8800 16.3 17.6 93 17.2 19.5 88
OLD BATTLE 10000 26.9 27.3 99 29.0 25.6 113
SANDSTONE RS 8150 14.2 12.8 111 17.1 16.0 107
WHISKEY PARK 8950 25.2 24.8 102 24.1 23.6 102
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Basin wide percent of average 102 104
UPPER GREEN RIVER
BIG SANDY OPENING 9100 9.9 12.7 78 9.1 14.9 61
BLIND BULL SUM 8650 20.2 25.5 79 15.8 21.7 73
EAST RIM DIVIDE 7930 9.3 12.5 74 9.3 14.0 66
ELKHART PARK G.S. 9400 10.2 12.0 85 10.6 14.7 72
GROS VENTRE SUMMIT 8775 9.5 13.5 70 10.5 14.6 72
KENDALL R.S. 7740 12.0 13.3 90 11.8 14.3 83
LOOMIS PARK 8240 11.4 15.6 73 13.1 17.3 76
NEW FORK LAKE 8340 8.7 10.2 85 8.6 13.3 65
SNIDER BASIN 8250 10.0 13.3 75 10.2 14.0 73
SPRING CREEK DIVIDE 9000 19.1 24.4 78 18.4 24.9 74
TRIPLE PEAK 8500 18.2 22.6 81 18.5 28.6 65
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Basin wide percent of average 79 71
LOWER GREEN RIVER
HAMS FORK 7840 10.1 11.1 91 9.4 12.2 77
HEWINTA 9500 9.8 9.1 108 12.8 10.8 119
HICKERSON PARK 9150 9.4 5.3 177 10.3 7.6 136
HOLE-IN-ROCK 9150 6.9 4.9 141 9.2 7.6 121
INDIAN CREEK 9425 20.9 24.3 86 16.3 23.3 70
KELLEY R.S. 8180 13.6 14.9 91 14.0 17.3 81
STEEL CREEK PARK 10100 12.7 13.3 95 15.2 10.8 141
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Basin wide percent of average 101 97
UPPER BEAR RIVER
BUG LAKE 7950 19.8 17.8 111 18.8 16.6 113
HAYDEN FORK 9400 12.4 14.4 86 17.4 16.0 109
KELLEY R.S. 8180 13.6 14.9 91 14.0 17.3 81
LILY LAKE 9050 12.5 11.1 113 14.8 12.3 120
MONTE CRISTO 8960 28.2 24.7 114 24.3 21.7 112
SALT RIVER SUMMIT 7600 13.6 12.6 108 15.3 15.5 99
TRIAL LAKE 9960 -M 22.3 * -M 20.5 *
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Basin wide percent of average 105 105
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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.