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: JUNE 4 , 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 .0 100* 32.9 28.2 118
COTTONWOOD CREEK 7600 6.6 .0 * 38.7 31.4 124
GRANITE CREEK 6770 1.5 1.4 108* 30.5 30.2 102
GRASSY LAKE 7265 21.0 9.5 222 52.9 46.7 114
GROS VENTRE SUMMIT 8775 5.3 .0 * 21.5 20.4 106
LEWIS LAKE DIVIDE 7860 25.4 15.6 163 48.9 47.4 104
PHILLIPS BENCH 8200 19.2 14.0 139 39.3 37.4 106
SALT RIVER SUMMIT 7600 .3 .0 * 24.4 21.7 113
SNAKE RIVER STATION 6920 .2 .0 * 33.3 32.8 102
SPRING CREEK DIVIDE 9000 23.5 15.0 157 37.4 34.0 111
THUMB DIVIDE 7980 1.2 .0 * 29.9 26.4 114
TOGWOTEE PASS 9580 -M 21.5 * 37.4 35.7 106
TWO OCEAN PLATEAU 9360 34.8 21.2 165 39.4 38.8 102
WILLOW CREEK 8450 15.7 15.1 104 51.8 40.3 129
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Basin wide percent of average 154* 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 22.5 17.4 131 29.5 25.4 117
BLACK BEAR 7950 49.3 24.7 200 63.3 51.0 125
CANYON 7940 .3 1.2 25* 24.4 19.2 128
FISHER CREEK 9100 36.9 29.5 126 46.0 47.4 98
MADISON PLATEAU 7750 -M 6.0 * 41.3 33.8 123
NORTHEAST ENTRANCE 7350 .0 .3 0* 19.2 16.9 115
PARKER PEAK 9400 17.4 17.2 102 -M 21.9 *
SYLVAN LAKE 8420 17.9 12.5 145 37.5 26.7 141
THUMB DIVIDE 7980 1.2 .0 * 29.9 26.4 114
TWO OCEAN PLATEAU 9360 34.8 21.2 165 39.4 38.8 102
WHISKEY CREEK 6800 3.8 1.0 380* 32.5 28.0 117
WHITE MILL 8700 24.4 17.7 139 31.9 37.0 87
WOLVERINE 7650 .0 .0 100* 16.4 18.4 89
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Basin wide percent of average 146 112
WIND RIVER
BURROUGHS CREEK 8750 8.5 1.7 532 25.7 22.7 113
COLD SPRINGS 9630 6.5 .3 2134* 26.0 16.4 159
DEER PARK 9700 18.0 -M * 34.7 -M *
HOBBS PARK 10100 20.4 8.1 251 30.7 21.2 145
LITTLE WARM 9620 6.3 .6 1051* 26.4 19.5 136
SOUTH PASS 9040 11.5 8.7 132 31.4 24.4 129
ST. LAWRENCE ALT 8620 .0 .2 0* 22.7 15.0 151
TOGWOTEE PASS 9580 -M 21.5 * 37.4 35.7 106
TOWNSEND CREEK 8700 1.2 1.5 74 27.2 18.9 144
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Basin wide percent of average 259* 131
BIGHORN BASIN
BALD MTN. 9375 20.4 16.7 123 27.2 25.7 106
BEAR TRAP MEADOW 7900 .0 .0 100* 19.7 14.2 139
BLACKWATER 9780 30.9 16.5 187 32.5 24.4 134
BONE SPRINGS DIV 9350 14.5 7.0 206 27.2 22.5 121
EVENING STAR 9200 29.7 23.4 128 42.9 30.4 142
GRAVE SPRINGS 8550 .0 1.7 0 20.2 16.5 123
KIRWIN 9550 11.0 4.3 254 23.4 16.5 142
MARQUETTE 8760 11.0 3.4 324 22.7 17.7 129
MIDDLE POWDER 7760 .5 2.0 21 23.0 18.5 125
OWL CREEK 8975 .0 .2 0* 17.5 11.0 161
POWDER RIVER PASS 9480 .0 1.2 82* 23.9 18.5 129
SHELL CREEK 9580 10.9 9.7 112 22.4 20.2 111
SYLVAN LAKE 8420 17.9 12.5 145 37.5 26.7 141
SYLVAN ROAD 8120 .0 .9 0* 24.4 22.2 110
TIMBER CREEK 7950 .3 .3 100* 19.7 14.1 140
YOUNTS PEAK 8350 12.2 7.6 161 24.4 22.7 108
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Basin wide percent of average 150 127
SHOSHONE RIVER
BLACKWATER 9780 30.9 16.5 187 32.5 24.4 134
EVENING STAR 9200 29.7 23.4 128 42.9 30.4 142
KIRWIN 9550 11.0 4.3 254 23.4 16.5 142
MARQUETTE 8760 11.0 3.4 324 22.7 17.7 129
SYLVAN LAKE 8420 17.9 12.5 145 37.5 26.7 141
SYLVAN ROAD 8120 .0 .9 0* 24.4 22.2 110
YOUNTS PEAK 8350 12.2 7.6 161 24.4 22.7 108
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Basin wide percent of average 165 130
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 19.7 14.2 139
BIG GOOSE 7990 -M -M * 20.2 -M *
BONE SPRINGS DIV 9350 14.5 7.0 206 27.2 22.5 121
BURGESS JUNCTION 7880 .3 1.9 11 19.2 18.0 107
CLOUD PEAK RESERVOIR 9860 13.4 7.3 183 26.9 21.7 124
DOME LAKE 8880 -M 3.3 * 18.7 20.5 91
GRAVE SPRINGS 8550 .0 1.7 0 20.2 16.5 123
HANSEN SAWMILL 8760 .0 .7 0* 18.5 13.5 139
MIDDLE POWDER 7760 .5 2.0 21 23.0 18.5 125
POWDER RIVER PASS 9480 .0 1.2 82* 23.9 18.5 129
SUCKER CREEK 8880 3.2 3.3 97 23.7 20.9 114
TIE CREEK 6870 .0 -M * 19.9 17.4 116
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Basin wide percent of average 131 120
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 22.5 18.7 121
NORTH RAPID CREEK 6130 .0 -M * 19.7 -M *
WARREN PEAK 6520 .0 .2 0* -M 13.7 *
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Basin wide percent of average 0* 121*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 2.3 0* 30.9 31.2 100
DIVIDE PEAK 8800 .0 2.4 0 33.3 31.0 108
ELK RIVER 8700 .0 .3 0* 30.9 24.7 126
JOE WRIGHT 10120 14.0 15.0 94 36.3 35.3 103
NORTH FRENCH CREEK 10100 30.9 18.7 166 40.8 32.5 126
OLD BATTLE 10000 30.7 20.9 147 50.3 39.9 127
SOUTH BRUSH CREEK 8400 6.8 .9 850* 27.9 23.7 118
TOWER 10500 43.7 40.8 107 52.3 49.8 106
WEBBER SPRINGS 9200 1.0 8.6 12 36.5 34.0 108
WILLOW CREEK PASS 9540 .0 1.9 0 18.7 18.7 100
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Basin wide percent of average 115 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.9 11.0 135 34.8 27.4 128
CASPER MTN. 7900 .3 3.0 7 24.7 23.2 107
DEADMAN HILL 10220 9.7 9.0 109 26.2 24.9 105
DEER PARK 9700 18.0 -M * 34.7 -M *
LAPRELE CREEK 8320 .0 .9 0* 23.7 18.4 129
RENO HILL 8400 .0 2.5 0 27.9 24.7 114
ROACH 9700 3.3 6.3 52 27.9 30.5 92
SAND LAKE 10080 44.8 22.4 201 43.0 28.7 150
SOUTH PASS 9040 11.5 8.7 132 31.4 24.4 129
WINDY PEAK 7840 .0 .0 100* 21.2 16.0 133
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Basin wide percent of average 133 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 24.0 21.0 115
DIVIDE PEAK 8800 .0 2.4 0 33.3 31.0 108
OLD BATTLE 10000 30.7 20.9 147 50.3 39.9 127
SANDSTONE RS 8150 .0 .0 100* 27.5 26.2 105
WHISKEY PARK 8950 22.4 9.5 236 40.3 38.5 105
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Basin wide percent of average 162 112
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 20.7 20.9 100
BLIND BULL SUM 8650 25.7 14.9 174 30.0 29.7 102
EAST RIM DIVIDE 7930 3.3 5.5 60 19.7 19.4 102
ELKHART PARK G.S. 9400 4.3 3.5 121 22.4 20.4 110
GROS VENTRE SUMMIT 8775 5.3 .0 * 21.5 20.4 106
KENDALL R.S. 7740 .2 .0 * 21.7 19.9 109
LOOMIS PARK 8240 -M .0 * 26.7 24.0 111
NEW FORK LAKE 8340 .0 .0 100* 18.4 18.5 100
SNIDER BASIN 8250 .0 .0 100* 23.7 19.4 123
SPRING CREEK DIVIDE 9000 23.5 15.0 157 37.4 34.0 111
TRIPLE PEAK 8500 11.7 11.6 101 40.3 39.2 103
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Basin wide percent of average 136* 107
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.4 17.2 113
HEWINTA 9500 .0 .0 100* 21.5 19.4 112
HICKERSON PARK 9150 .2 .0 * 16.4 15.5 106
HOLE-IN-ROCK 9150 .0 .2 0* 16.9 15.5 110
INDIAN CREEK 9425 25.9 13.7 190 35.9 32.5 111
KELLEY R.S. 8180 .2 .0 * 26.2 24.0 109
STEEL CREEK PARK 10100 16.0 10.4 155 25.5 20.2 127
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Basin wide percent of average 174* 113
UPPER BEAR RIVER
BUG LAKE 7950 .6 1.9 32* 30.4 25.2 122
HAYDEN FORK 9400 .3 .0 * 30.4 26.5 115
KELLEY R.S. 8180 .2 .0 * 26.2 24.0 109
LILY LAKE 9050 .0 .9 0* 26.9 21.4 126
MONTE CRISTO 8960 20.5 8.6 239 39.5 34.0 117
SALT RIVER SUMMIT 7600 .3 .0 * 24.4 21.7 113
TRIAL LAKE 9960 15.0 10.4 145 33.3 32.0 104
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Basin wide percent of average 167* 115
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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.