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 FRIDAY: MAY 28 , 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 .9 1.2 67* 30.9 27.7 112
COTTONWOOD CREEK 7600 11.5 3.3 346 36.8 30.9 120
GRANITE CREEK 6770 3.7 3.2 117 28.0 29.5 95
GRASSY LAKE 7265 26.4 15.6 170 49.8 45.8 109
GROS VENTRE SUMMIT 8775 10.0 2.4 417 20.4 19.9 103
LEWIS LAKE DIVIDE 7860 30.4 22.2 137 46.4 46.7 100
PHILLIPS BENCH 8200 23.4 19.5 120 37.4 36.8 102
SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109
SNAKE RIVER STATION 6920 .0 2.8 0 30.4 32.3 95
SPRING CREEK DIVIDE 9000 28.4 20.7 137 36.4 33.5 109
THUMB DIVIDE 7980 7.0 2.8 256 28.2 25.9 109
TOGWOTEE PASS 9580 -M 24.2 * 35.8 34.9 103
TWO OCEAN PLATEAU 9360 35.7 23.4 153 37.3 38.0 99
WILLOW CREEK 8450 20.7 21.4 97 49.2 39.7 124
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Basin wide percent of average 143 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 23.7 20.7 115 28.4 24.7 116
BLACK BEAR 7950 52.7 29.9 177 60.3 50.2 121
CANYON 7940 4.3 2.8 160 22.9 18.7 124
FISHER CREEK 9100 38.5 33.2 117 44.3 46.4 96
MADISON PLATEAU 7750 -M 10.2 * 39.3 32.9 120
NORTHEAST ENTRANCE 7350 .0 .9 0* 18.2 16.2 112
PARKER PEAK 9400 18.7 19.7 95 -M 21.2 *
SYLVAN LAKE 8420 20.2 15.7 129 36.3 25.9 141
THUMB DIVIDE 7980 7.0 2.8 256 28.2 25.9 109
TWO OCEAN PLATEAU 9360 35.7 23.4 153 37.3 38.0 99
WHISKEY CREEK 6800 9.5 3.3 294 30.4 27.4 112
WHITE MILL 8700 25.7 20.7 124 30.4 36.2 85
WOLVERINE 7650 .0 .9 0* 15.5 17.9 88
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Basin wide percent of average 136 109
WIND RIVER
BURROUGHS CREEK 8750 12.0 3.3 372 23.7 22.2 107
COLD SPRINGS 9630 11.0 .0 1212 25.4 15.9 161
DEER PARK 9700 22.7 -M * 34.3 -M *
HOBBS PARK 10100 23.7 11.1 213 29.5 20.5 144
LITTLE WARM 9620 11.4 1.9 595 25.4 19.0 134
SOUTH PASS 9040 17.0 11.6 147 31.4 23.7 133
ST. LAWRENCE ALT 8620 1.5 .7 215* 22.0 14.6 151
TOGWOTEE PASS 9580 -M 24.2 * 35.8 34.9 103
TOWNSEND CREEK 8700 9.5 2.9 328 26.9 18.4 147
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Basin wide percent of average 266 131
BIGHORN BASIN
BALD MTN. 9375 22.2 19.9 112 26.2 24.9 106
BEAR TRAP MEADOW 7900 .0 .5 0* 19.2 13.5 142
BLACKWATER 9780 31.0 20.4 153 31.4 23.7 133
BONE SPRINGS DIV 9350 18.2 10.2 178 26.4 21.7 122
EVENING STAR 9200 31.4 26.7 118 41.2 29.4 140
GRAVE SPRINGS 8550 1.2 4.3 29 19.7 15.9 125
KIRWIN 9550 12.7 6.3 202 21.7 16.0 137
MARQUETTE 8760 14.5 5.0 291 22.2 16.9 131
MIDDLE POWDER 7760 7.8 5.3 148 23.0 17.9 130
OWL CREEK 8975 -M .5 * 16.0 10.5 154
POWDER RIVER PASS 9480 6.1 2.5 244 23.4 17.9 131
SHELL CREEK 9580 15.0 12.6 120 21.7 19.4 112
SYLVAN LAKE 8420 20.2 15.7 129 36.3 25.9 141
SYLVAN ROAD 8120 1.0 1.9 56 22.7 21.4 106
TIMBER CREEK 7950 4.1 .9 513 18.4 13.5 138
YOUNTS PEAK 8350 16.4 10.7 153 22.9 22.0 104
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Basin wide percent of average 142 127
SHOSHONE RIVER
BLACKWATER 9780 31.0 20.4 153 31.4 23.7 133
EVENING STAR 9200 31.4 26.7 118 41.2 29.4 140
KIRWIN 9550 12.7 6.3 202 21.7 16.0 137
MARQUETTE 8760 14.5 5.0 291 22.2 16.9 131
SYLVAN LAKE 8420 20.2 15.7 129 36.3 25.9 141
SYLVAN ROAD 8120 1.0 1.9 56 22.7 21.4 106
YOUNTS PEAK 8350 16.4 10.7 153 22.9 22.0 104
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Basin wide percent of average 147 128
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .5 0* 19.2 13.5 142
BIG GOOSE 7990 3.2 -M * 19.9 -M *
BONE SPRINGS DIV 9350 18.2 10.2 178 26.4 21.7 122
BURGESS JUNCTION 7880 5.8 4.5 132 18.9 17.4 110
CLOUD PEAK RESERVOIR 9860 18.5 10.2 182 26.2 20.9 126
DOME LAKE 8880 -M 5.5 * 18.7 19.9 95
GRAVE SPRINGS 8550 1.2 4.3 29 19.7 15.9 125
HANSEN SAWMILL 8760 .0 1.7 0 18.2 12.7 144
MIDDLE POWDER 7760 7.8 5.3 148 23.0 17.9 130
POWDER RIVER PASS 9480 6.1 2.5 244 23.4 17.9 131
SUCKER CREEK 8880 9.2 5.6 165 23.5 20.0 118
TIE CREEK 6870 .0 -M * 19.4 16.7 117
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Basin wide percent of average 151 122
BELLE FOURCHE
BLIND PARK 6890 .0 1.2 0* 21.5 17.7 122
NORTH RAPID CREEK 6130 .0 -M * 18.9 -M *
WARREN PEAK 6520 .0 1.2 0* -M 13.0 *
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Basin wide percent of average 0* 122*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 5.5 0 30.2 30.7 99
DIVIDE PEAK 8800 5.8 5.3 112 32.8 30.4 108
ELK RIVER 8700 .0 2.3 0 30.4 24.2 126
JOE WRIGHT 10120 19.0 18.7 102 34.9 34.4 102
NORTH FRENCH CREEK 10100 36.7 21.9 168 40.2 31.9 127
OLD BATTLE 10000 35.7 27.2 132 49.3 39.2 127
SOUTH BRUSH CREEK 8400 7.0 2.3 319 27.5 23.0 120
TOWER 10500 47.5 46.0 104 51.0 48.8 105
WEBBER SPRINGS 9200 9.6 12.9 75 35.5 33.4 107
WILLOW CREEK PASS 9540 7.5 4.3 175 17.5 18.0 98
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Basin wide percent of average 116 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.2 15.7 135 33.8 26.7 127
CASPER MTN. 7900 .3 5.5 6 24.7 22.4 111
DEADMAN HILL 10220 15.5 12.2 127 25.4 24.2 105
DEER PARK 9700 22.7 -M * 34.3 -M *
LAPRELE CREEK 8320 .0 1.7 0 23.2 17.7 131
RENO HILL 8400 1.2 4.3 28 27.5 24.2 115
ROACH 9700 -M 9.5 * 27.0 29.7 91
SAND LAKE 10080 46.3 27.2 170 39.8 28.0 142
SOUTH PASS 9040 17.0 11.6 147 31.4 23.7 133
WINDY PEAK 7840 .0 .0 0* 20.2 15.4 132
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Basin wide percent of average 129 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 24.0 20.7 117
DIVIDE PEAK 8800 5.8 5.3 112 32.8 30.4 108
OLD BATTLE 10000 35.7 27.2 132 49.3 39.2 127
SANDSTONE RS 8150 .0 .6 0* 27.2 25.7 106
WHISKEY PARK 8950 -M 15.2 * 39.7 37.8 105
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Basin wide percent of average 126* 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 5.3 2.4 221 20.2 20.4 99
BLIND BULL SUM 8650 31.5 17.9 176 28.7 29.2 99
EAST RIM DIVIDE 7930 7.5 8.5 90 18.5 19.0 98
ELKHART PARK G.S. 9400 7.3 5.8 129 20.0 20.0 100
GROS VENTRE SUMMIT 8775 10.0 2.4 417 20.4 19.9 103
KENDALL R.S. 7740 .0 .0 100* 20.5 19.5 106
LOOMIS PARK 8240 -M 2.8 * 25.5 23.5 109
NEW FORK LAKE 8340 .3 1.5 14 17.7 18.2 98
SNIDER BASIN 8250 4.6 2.0 230 23.2 19.0 123
SPRING CREEK DIVIDE 9000 28.4 20.7 137 36.4 33.5 109
TRIPLE PEAK 8500 17.9 16.4 110 39.4 38.4 103
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Basin wide percent of average 146 104
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 18.7 16.7 112
HEWINTA 9500 1.0 .0 * 20.5 18.7 110
HICKERSON PARK 9150 .2 .3 50* 16.2 15.0 109
HOLE-IN-ROCK 9150 .0 .3 0* 16.0 15.0 108
INDIAN CREEK 9425 29.4 19.2 154 35.0 31.9 110
KELLEY R.S. 8180 3.8 2.4 159 24.9 23.5 106
STEEL CREEK PARK 10100 18.5 13.1 142 24.9 19.4 128
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Basin wide percent of average 148* 112
UPPER BEAR RIVER
BUG LAKE 7950 9.7 4.3 231 29.7 24.7 121
HAYDEN FORK 9400 2.3 .3 1101* 29.2 25.9 114
KELLEY R.S. 8180 3.8 2.4 159 24.9 23.5 106
LILY LAKE 9050 1.5 2.3 69 26.2 20.9 126
MONTE CRISTO 8960 28.7 12.7 226 38.5 33.3 116
SALT RIVER SUMMIT 7600 .3 .0 * 23.2 21.2 109
TRIAL LAKE 9960 18.7 14.2 132 31.9 31.4 102
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Basin wide percent of average 180 113
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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.