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: MAY 29 , 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 .0 .0 0* 30.9 27.7 112
COTTONWOOD CREEK 7600 10.0 2.5 400 36.8 30.9 120
GRANITE CREEK 6770 2.8 2.8 104 28.2 29.7 96
GRASSY LAKE 7265 25.2 14.7 171 50.0 45.9 109
GROS VENTRE SUMMIT 8775 9.0 1.9 495 20.4 20.0 102
LEWIS LAKE DIVIDE 7860 29.2 21.7 135 46.5 46.8 100
PHILLIPS BENCH 8200 22.0 19.0 116 37.5 36.8 102
SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109
SNAKE RIVER STATION 6920 .0 2.2 0 30.7 32.3 95
SPRING CREEK DIVIDE 9000 26.4 20.4 131 36.4 33.7 109
THUMB DIVIDE 7980 5.8 2.0 286 28.4 25.9 110
TOGWOTEE PASS 9580 -M 24.2 * 35.8 35.0 103
TWO OCEAN PLATEAU 9360 34.8 23.2 150 37.4 38.2 99
WILLOW CREEK 8450 19.0 20.9 92 49.2 39.8 124
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Basin wide percent of average 140 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 23.2 20.4 114 28.7 24.7 116
BLACK BEAR 7950 51.5 29.2 177 60.8 50.3 121
CANYON 7940 3.2 2.4 130 23.2 18.7 124
FISHER CREEK 9100 36.8 32.8 113 44.3 46.7 96
MADISON PLATEAU 7750 -M 9.6 * 39.5 33.0 120
NORTHEAST ENTRANCE 7350 .2 .7 15* 18.2 16.4 112
PARKER PEAK 9400 17.7 19.4 91 -M 21.2 *
SYLVAN LAKE 8420 18.9 15.4 123 36.5 26.0 141
THUMB DIVIDE 7980 5.8 2.0 286 28.4 25.9 110
TWO OCEAN PLATEAU 9360 34.8 23.2 150 37.4 38.2 99
WHISKEY CREEK 6800 8.1 2.8 300 30.4 27.4 111
WHITE MILL 8700 25.0 20.4 123 30.5 36.3 85
WOLVERINE 7650 .0 .6 0* 15.1 17.9 85
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Basin wide percent of average 133 109
WIND RIVER
BURROUGHS CREEK 8750 10.9 2.9 373 23.7 22.4 107
COLD SPRINGS 9630 9.9 .9 1226* 25.4 16.0 160
DEER PARK 9700 21.9 -M * 34.3 -M *
HOBBS PARK 10100 22.7 10.7 213 29.5 20.7 144
LITTLE WARM 9620 10.0 1.7 619 25.4 19.2 133
SOUTH PASS 9040 17.9 11.2 159 31.4 23.7 133
ST. LAWRENCE ALT 8620 .2 .6 17* 22.0 14.6 151
TOGWOTEE PASS 9580 -M 24.2 * 35.8 35.0 103
TOWNSEND CREEK 8700 8.4 2.7 320 26.9 18.4 147
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Basin wide percent of average 262 130
BIGHORN BASIN
BALD MTN. 9375 21.5 19.7 110 26.2 24.9 106
BEAR TRAP MEADOW 7900 .0 .3 0* 19.2 13.6 141
BLACKWATER 9780 30.7 19.9 154 31.4 23.7 133
BONE SPRINGS DIV 9350 -M 9.7 * -M 21.9 *
EVENING STAR 9200 30.9 26.4 117 41.4 29.7 140
GRAVE SPRINGS 8550 .5 3.7 12 19.7 16.0 124
KIRWIN 9550 11.7 6.0 195 21.9 16.0 137
MARQUETTE 8760 13.6 4.8 284 22.2 17.0 131
MIDDLE POWDER 7760 6.3 4.6 137 22.9 17.9 128
OWL CREEK 8975 -M .3 * 16.0 10.5 153
POWDER RIVER PASS 9480 5.5 2.3 246 23.4 17.9 131
SHELL CREEK 9580 13.9 12.4 113 21.7 19.5 111
SYLVAN LAKE 8420 18.9 15.4 123 36.5 26.0 141
SYLVAN ROAD 8120 .0 1.7 0 22.5 21.5 105
TIMBER CREEK 7950 -M .7 * 18.4 13.5 137
YOUNTS PEAK 8350 16.0 10.4 155 22.9 22.2 104
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Basin wide percent of average 134 127
SHOSHONE RIVER
BLACKWATER 9780 30.7 19.9 154 31.4 23.7 133
EVENING STAR 9200 30.9 26.4 117 41.4 29.7 140
KIRWIN 9550 11.7 6.0 195 21.9 16.0 137
MARQUETTE 8760 13.6 4.8 284 22.2 17.0 131
SYLVAN LAKE 8420 18.9 15.4 123 36.5 26.0 141
SYLVAN ROAD 8120 .0 1.7 0 22.5 21.5 105
YOUNTS PEAK 8350 16.0 10.4 155 22.9 22.2 104
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Basin wide percent of average 145 128
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .3 0* 19.2 13.6 141
BIG GOOSE 7990 1.7 -M * 19.9 -M *
BONE SPRINGS DIV 9350 -M 9.7 * -M 21.9 *
BURGESS JUNCTION 7880 4.8 3.9 124 18.9 17.4 109
CLOUD PEAK RESERVOIR 9860 17.5 9.7 181 26.2 20.9 126
DOME LAKE 8880 -M 5.1 * 18.7 19.9 94
GRAVE SPRINGS 8550 .5 3.7 12 19.7 16.0 124
HANSEN SAWMILL 8760 .0 1.4 0 18.2 12.9 143
MIDDLE POWDER 7760 6.3 4.6 137 22.9 17.9 128
POWDER RIVER PASS 9480 5.5 2.3 246 23.4 17.9 131
SUCKER CREEK 8880 8.2 5.3 158 23.5 20.2 117
TIE CREEK 6870 .0 -M * 19.4 16.7 117
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Basin wide percent of average 138 122
BELLE FOURCHE
BLIND PARK 6890 .0 .0 0* 21.5 17.9 121
NORTH RAPID CREEK 6130 .0 -M * 18.9 -M *
WARREN PEAK 6520 .0 .0 0* -M 13.1 *
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Basin wide percent of average 0* 121*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 4.8 0 30.2 30.7 99
DIVIDE PEAK 8800 4.1 4.6 90 32.8 30.5 108
ELK RIVER 8700 .0 1.7 0* 30.2 24.4 125
JOE WRIGHT 10120 18.4 18.4 100 34.9 34.5 102
NORTH FRENCH CREEK 10100 36.0 21.4 169 40.0 31.9 126
OLD BATTLE 10000 34.5 26.4 132 49.4 39.3 126
SOUTH BRUSH CREEK 8400 6.8 1.9 358 27.4 23.2 119
TOWER 10500 46.8 45.7 103 51.0 48.9 105
WEBBER SPRINGS 9200 8.1 12.2 67 35.8 33.5 107
WILLOW CREEK PASS 9540 6.5 3.8 172 17.7 18.2 98
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Basin wide percent of average 115 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 19.9 15.0 133 34.2 26.9 128
CASPER MTN. 7900 .3 5.0 7 24.7 22.7 110
DEADMAN HILL 10220 14.9 11.7 127 25.5 24.4 105
DEER PARK 9700 21.9 -M * 34.3 -M *
LAPRELE CREEK 8320 .0 1.5 0 23.4 17.9 131
RENO HILL 8400 .0 4.0 0 27.7 24.2 115
ROACH 9700 -M 9.0 * 27.2 29.9 91
SAND LAKE 10080 46.3 26.7 174 39.9 28.2 142
SOUTH PASS 9040 17.9 11.2 159 31.4 23.7 133
WINDY PEAK 7840 .0 .7 0* 20.7 15.5 134
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Basin wide percent of average 131 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * 24.0 20.7 116
DIVIDE PEAK 8800 4.1 4.6 90 32.8 30.5 108
OLD BATTLE 10000 34.5 26.4 132 49.4 39.3 126
SANDSTONE RS 8150 .0 .5 0* 27.4 25.9 106
WHISKEY PARK 8950 -M 14.5 * 39.7 37.9 105
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Basin wide percent of average 123* 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 3.8 1.9 212 20.2 20.4 99
BLIND BULL SUM 8650 30.4 17.5 174 28.7 29.4 98
EAST RIM DIVIDE 7930 6.6 8.1 82 18.9 19.2 99
ELKHART PARK G.S. 9400 6.0 5.5 112 20.0 20.2 100
GROS VENTRE SUMMIT 8775 9.0 1.9 495 20.4 20.0 102
KENDALL R.S. 7740 .2 .0 * 20.5 19.5 106
LOOMIS PARK 8240 -M 2.0 * 25.4 23.7 108
NEW FORK LAKE 8340 .0 1.2 0* 18.2 18.2 100
SNIDER BASIN 8250 2.5 1.5 167* 23.2 19.2 122
SPRING CREEK DIVIDE 9000 26.4 20.4 131 36.4 33.7 109
TRIPLE PEAK 8500 16.5 16.0 104 39.5 38.5 103
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Basin wide percent of average 138 104
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 18.7 16.9 111
HEWINTA 9500 .0 .0 100* 20.5 18.9 110
HICKERSON PARK 9150 .0 .3 0* 16.0 15.0 107
HOLE-IN-ROCK 9150 .0 .3 0* 16.0 15.0 107
INDIAN CREEK 9425 28.0 18.9 149 35.0 32.0 110
KELLEY R.S. 8180 2.3 1.9 123 24.9 23.7 106
STEEL CREEK PARK 10100 17.9 13.0 138 24.9 19.5 128
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Basin wide percent of average 142* 111
UPPER BEAR RIVER
BUG LAKE 7950 8.2 3.8 222 29.7 24.7 121
HAYDEN FORK 9400 .9 .3 400* 29.2 25.9 113
KELLEY R.S. 8180 2.3 1.9 123 24.9 23.7 106
LILY LAKE 9050 .7 1.9 37 26.2 20.9 126
MONTE CRISTO 8960 26.9 12.0 225 38.5 33.4 116
SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109
TRIAL LAKE 9960 17.0 13.6 126 32.0 31.4 102
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Basin wide percent of average 169 113
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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.