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 10 , 1999
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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 24.4 16.3 150 24.7 20.9 118
COTTONWOOD CREEK 7600 23.6 20.5 115 25.3 23.3 109
GRANITE CREEK 6770 21.0 16.5 127 22.4 21.9 102
GRASSY LAKE 7265 40.5 31.8 127 38.4 34.1 113
GROS VENTRE SUMMIT 8775 15.0 13.9 108 14.7 14.8 99
LEWIS LAKE DIVIDE 7860 40.4 31.6 128 -M 34.7 *
PHILLIPS BENCH 8200 31.4 26.0 121 -M 27.4 *
SALT RIVER SUMMIT 7600 15.1 12.9 117 17.3 15.7 110
SNAKE RIVER STATION 6920 21.8 17.2 127 24.8 23.9 104
SPRING CREEK DIVIDE 9000 27.4 24.9 110 25.7 25.3 102
THUMB DIVIDE 7980 22.5 15.3 147 21.3 19.5 109
TOGWOTEE PASS 9580 -M 22.2 * 26.9 25.9 104
TWO OCEAN PLATEAU 9360 34.6 23.8 145 -M 28.8 *
WILLOW CREEK 8450 31.5 27.5 115 34.4 29.8 115
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Basin wide percent of average 126 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 25.0 21.1 118 22.4 16.0 140
BLACK BEAR 7950 48.5 34.0 143 -M 35.9 *
CANYON 7940 17.5 11.5 152 18.1 12.8 141
FISHER CREEK 9100 39.0 32.1 121 -M 32.6 *
MADISON PLATEAU 7750 -M 22.0 * -M 23.2 *
NORTHEAST ENTRANCE 7350 12.1 8.6 141 13.7 10.7 128
PARKER PEAK 9400 22.1 19.3 115 -M 13.9 *
SYLVAN LAKE 8420 24.3 19.7 123 26.1 17.2 152
THUMB DIVIDE 7980 22.5 15.3 147 21.3 19.5 109
TWO OCEAN PLATEAU 9360 34.6 23.8 145 -M 28.8 *
WHISKEY CREEK 6800 20.1 15.5 130 -M 19.2 *
WHITE MILL 8700 27.0 22.7 119 24.0 25.2 95
WOLVERINE 7650 13.7 10.7 128 12.3 11.5 107
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Basin wide percent of average 131 122
WIND RIVER
BURROUGHS CREEK 8750 16.2 13.8 117 17.6 14.8 119
COLD SPRINGS 9630 9.1 7.5 121 10.9 9.0 121
DEER PARK 9700 15.5 -M * 20.4 -M *
HOBBS PARK 10100 15.9 13.0 122 14.4 12.1 119
LITTLE WARM 9620 13.0 10.0 130 14.4 11.5 125
SOUTH PASS 9040 16.5 14.8 111 17.4 14.8 118
ST. LAWRENCE ALT 8620 6.5 6.7 97 9.4 8.6 109
TOGWOTEE PASS 9580 -M 22.2 * 26.9 25.9 104
TOWNSEND CREEK 8700 8.6 8.6 100 11.5 10.6 108
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Basin wide percent of average 115 114
BIGHORN BASIN
BALD MTN. 9375 18.7 18.2 103 17.2 15.1 114
BEAR TRAP MEADOW 7900 6.9 6.3 110 8.8 6.9 128
BLACKWATER 9780 28.7 19.4 148 23.8 16.0 149
BONE SPRINGS DIV 9350 14.8 14.4 103 14.5 12.7 114
EVENING STAR 9200 31.9 24.0 133 -M 20.1 *
GRAVE SPRINGS 8550 7.6 8.2 93 10.2 8.0 128
KIRWIN 9550 11.8 8.7 136 13.4 9.2 146
MARQUETTE 8760 7.7 7.0 110 8.4 7.8 108
MIDDLE POWDER 7760 9.4 10.5 90 14.2 10.0 142
OWL CREEK 8975 5.7 4.0 143 6.3 5.3 119
POWDER RIVER PASS 9480 12.1 9.5 127 14.0 10.0 140
SHELL CREEK 9580 15.5 13.4 116 14.2 11.3 126
SYLVAN LAKE 8420 24.3 19.7 123 26.1 17.2 152
SYLVAN ROAD 8120 16.4 11.9 138 18.6 14.4 129
TIMBER CREEK 7950 4.6 5.4 85 6.3 5.7 111
YOUNTS PEAK 8350 20.4 15.6 131 17.9 14.7 122
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Basin wide percent of average 121 130
SHOSHONE RIVER
BLACKWATER 9780 28.7 19.4 148 23.8 16.0 149
EVENING STAR 9200 31.9 24.0 133 -M 20.1 *
KIRWIN 9550 11.8 8.7 136 13.4 9.2 146
MARQUETTE 8760 7.7 7.0 110 8.4 7.8 108
SYLVAN LAKE 8420 24.3 19.7 123 26.1 17.2 152
SYLVAN ROAD 8120 16.4 11.9 138 18.6 14.4 129
YOUNTS PEAK 8350 20.4 15.6 131 17.9 14.7 122
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Basin wide percent of average 133 136
POWDER-TONGUE
BEAR TRAP MEADOW 7900 6.9 6.3 110 8.8 6.9 128
BIG GOOSE 7990 5.6 -M * 8.7 -M *
BONE SPRINGS DIV 9350 14.8 14.4 103 14.5 12.7 114
BURGESS JUNCTION 7880 7.9 10.3 77 9.6 9.4 102
CLOUD PEAK RESERVOIR 9860 13.7 12.3 111 11.8 11.2 105
DOME LAKE 8880 7.0 12.1 58 9.5 11.2 85
GRAVE SPRINGS 8550 7.6 8.2 93 10.2 8.0 128
HANSEN SAWMILL 8760 5.6 6.2 90 7.8 6.6 118
MIDDLE POWDER 7760 9.4 10.5 90 14.2 10.0 142
POWDER RIVER PASS 9480 12.1 9.5 127 14.0 10.0 140
SUCKER CREEK 8880 9.5 10.5 90 11.7 11.3 104
TIE CREEK 6870 3.4 -M * 7.5 9.0 83
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Basin wide percent of average 94 113
BELLE FOURCHE
BLIND PARK 6890 7.7 9.7 79 14.6 8.3 176
NORTH RAPID CREEK 6130 5.5 -M * 12.2 -M *
WARREN PEAK 6520 10.2 9.7 105 13.4 6.7 200
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Basin wide percent of average 92 187
UPPER N. PLATTE RIVER
COLUMBINE 9400 19.9 22.5 88 20.6 21.7 95
DIVIDE PEAK 8800 17.4 18.0 97 22.4 19.9 113
ELK RIVER 8700 17.4 17.8 98 20.3 16.6 122
JOE WRIGHT 10120 18.9 18.8 101 24.5 21.6 113
NORTH FRENCH CREEK 10100 26.9 22.0 122 27.2 20.2 135
OLD BATTLE 10000 25.9 27.8 93 32.7 26.2 125
SOUTH BRUSH CREEK 8400 10.7 10.6 101 17.9 13.9 129
TOWER 10500 40.5 39.8 102 35.8 31.8 113
WEBBER SPRINGS 9200 17.7 24.0 74 23.6 22.0 107
WILLOW CREEK PASS 9540 10.7 10.0 107 10.9 10.7 102
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Basin wide percent of average 97 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.9 21.6 88 20.7 16.6 125
CASPER MTN. 7900 10.3 13.3 77 15.2 11.7 130
DEADMAN HILL 10220 15.5 14.5 107 16.2 14.1 115
DEER PARK 9700 15.5 -M * 20.4 -M *
LAPRELE CREEK 8320 -M 9.0 * 13.5 9.9 136
RENO HILL 8400 12.5 11.8 106 17.1 15.9 108
ROACH 9700 14.6 15.0 97 18.0 18.4 98
SAND LAKE 10080 31.2 28.7 109 26.3 17.6 149
SOUTH PASS 9040 16.5 14.8 111 17.4 14.8 118
WINDY PEAK 7840 6.3 7.1 89 12.2 7.8 156
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Basin wide percent of average 99 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.8 10.5 122 16.2 13.4 121
DIVIDE PEAK 8800 17.4 18.0 97 22.4 19.9 113
OLD BATTLE 10000 25.9 27.8 93 32.7 26.2 125
SANDSTONE RS 8150 12.5 13.1 95 18.9 16.3 116
WHISKEY PARK 8950 25.0 25.3 99 26.4 24.2 109
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Basin wide percent of average 99 117
UPPER GREEN RIVER
BIG SANDY OPENING 9100 15.1 12.9 117 14.2 15.1 94
BLIND BULL SUM 8650 27.3 26.1 105 21.2 22.0 96
EAST RIM DIVIDE 7930 13.1 12.8 102 13.3 14.2 94
ELKHART PARK G.S. 9400 12.9 12.3 105 13.4 14.9 90
GROS VENTRE SUMMIT 8775 15.0 13.9 108 14.7 14.8 99
KENDALL R.S. 7740 15.0 13.7 109 15.2 14.5 105
LOOMIS PARK 8240 -M 15.9 * 19.1 17.5 109
NEW FORK LAKE 8340 11.8 10.4 113 11.3 13.5 84
SNIDER BASIN 8250 16.2 13.6 119 15.8 14.2 111
SPRING CREEK DIVIDE 9000 27.4 24.9 110 25.7 25.3 102
TRIPLE PEAK 8500 26.4 23.1 114 26.6 29.0 92
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Basin wide percent of average 110 98
LOWER GREEN RIVER
HAMS FORK 7840 13.8 11.4 121 10.5 12.4 85
HEWINTA 9500 10.8 9.5 114 13.0 11.0 118
HICKERSON PARK 9150 6.6 5.5 120 8.9 7.9 113
HOLE-IN-ROCK 9150 6.5 5.1 127 9.1 7.9 115
INDIAN CREEK 9425 27.2 25.0 109 22.3 23.7 94
KELLEY R.S. 8180 16.0 15.3 105 17.6 17.5 101
STEEL CREEK PARK 10100 13.3 13.7 97 15.3 11.0 139
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Basin wide percent of average 110 106
UPPER BEAR RIVER
BUG LAKE 7950 20.7 18.2 114 18.3 17.0 108
HAYDEN FORK 9400 15.3 14.8 103 18.4 16.3 113
KELLEY R.S. 8180 16.0 15.3 105 17.6 17.5 101
LILY LAKE 9050 12.8 11.4 112 16.8 12.6 133
MONTE CRISTO 8960 25.0 25.4 98 24.5 22.2 110
SALT RIVER SUMMIT 7600 15.1 12.9 117 17.3 15.7 110
TRIAL LAKE 9960 19.4 22.8 85 20.1 20.9 96
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Basin wide percent of average 103 109
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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.