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 TUESDAY: MAY 27 , 1997
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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 4.7 1.4 336* 40.7 27.5 148
COTTONWOOD CREEK 7600 11.9 4.1 290 41.8 30.6 137
GRANITE CREEK 6770 8.0 3.3 242 36.9 29.3 126
GRASSY LAKE 7265 23.2 16.5 141 63.5 45.6 139
GROS VENTRE SUMMIT 8775 8.4 3.0 280 24.3 19.8 123
LEWIS LAKE DIVIDE 7860 32.0 22.7 141 65.5 46.4 141
PHILLIPS BENCH 8200 28.2 19.9 142 52.5 36.5 144
SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.0 136
SNAKE RIVER STATION 6920 .0 3.4 0 42.4 32.0 132
SPRING CREEK DIVIDE 9000 23.8 21.1 113 38.5 33.3 116
THUMB DIVIDE 7980 7.4 3.3 224 38.8 25.7 151
TOGWOTEE PASS 9580 27.9 24.3 115 41.3 34.8 119
TWO OCEAN PLATEAU 9360 39.4 23.6 167 -M 37.8 *
WILLOW CREEK 8450 24.6 21.7 113 56.2 39.4 143
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Basin wide percent of average 142 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 33.2 21.0 158 36.8 24.4 151
BLACK BEAR 7950 -M 30.3 * -M 49.9 *
CANYON 7940 5.0 2.9 172 30.4 18.5 164
FISHER CREEK 9100 48.0 33.4 144 57.7 46.2 125
MADISON PLATEAU 7750 20.5 10.9 188 47.4 32.8 145
NORTHEAST ENTRANCE 7350 .2 .9 22* 24.4 16.1 152
PARKER PEAK 9400 27.4 19.8 138 29.5 21.0 140
SYLVAN LAKE 8420 18.8 16.0 118 38.8 25.7 151
THUMB DIVIDE 7980 7.4 3.3 224 38.8 25.7 151
TWO OCEAN PLATEAU 9360 39.4 23.6 167 -M 37.8 *
WHISKEY CREEK 6800 5.0 3.6 139 36.3 27.2 133
WHITE MILL 8700 32.6 21.0 155 37.9 36.0 105
WOLVERINE 7650 .3 .9 33* 20.4 17.6 116
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Basin wide percent of average 151 137
WIND RIVER
BURROUGHS CREEK 8750 8.2 3.4 241 29.9 22.0 136
CHRISTINA LAKE 9980 14.3 12.0 119 29.0 23.0 126
COLD SPRINGS 9630 .2 1.0 20 17.8 15.6 114
HOBBS PARK 10100 15.5 11.5 135 21.1 20.3 104
LITTLE WARM 9620 .5 2.1 24 26.5 18.8 141
SOUTH PASS 9040 18.5 11.9 155 31.0 23.5 132
ST. LAWRENCE ALT 8620 .1 .8 12 17.7 14.4 123
TOGWOTEE PASS 9580 27.9 24.3 115 41.3 34.8 119
TOWNSEND CREEK 8700 .8 3.1 26 20.0 18.1 110
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Basin wide percent of average 123 123
BIGHORN BASIN
BALD MTN. 9375 19.5 20.2 97 23.9 24.6 97
BEAR TRAP MEADOW 7900 .1 .4 25* 14.0 13.4 104
BLACKWATER 9780 31.9 20.6 155 35.2 23.5 150
BONE SPRINGS DIV 9350 13.7 10.6 129 22.3 21.5 104
EVENING STAR 9200 34.4 26.9 128 48.1 29.3 164
GRAVE SPRINGS 8550 .0 -M * 15.2 15.6 97
KIRWIN 9550 3.6 6.6 55 21.7 15.7 138
LOST CREEK 8080 10.6 8.1 131 21.4 18.2 118
MARQUETTE 8760 3.6 5.1 71 18.3 16.7 110
MIDDLE POWDER 7760 3.5 5.9 59 19.7 17.7 111
OWL CREEK 8975 .1 .4 25* 10.9 10.3 106
POWDER RIVER PASS 9480 7.7 2.7 285 19.6 17.6 111
SHELL CREEK 9580 13.8 12.9 107 20.1 19.2 105
SYLVAN LAKE 8420 18.8 16.0 118 38.8 25.7 151
SYLVAN ROAD 8120 .2 1.9 11 31.6 21.3 148
TIMBER CREEK 7950 .1 .9 11 13.2 13.2 100
YOUNTS PEAK 8350 13.8 11.1 124 31.4 21.8 144
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Basin wide percent of average 117 125
SHOSHONE RIVER
BLACKWATER 9780 31.9 20.6 155 35.2 23.5 150
EVENING STAR 9200 34.4 26.9 128 48.1 29.3 164
KIRWIN 9550 3.6 6.6 55 21.7 15.7 138
MARQUETTE 8760 3.6 5.1 71 18.3 16.7 110
SYLVAN LAKE 8420 18.8 16.0 118 38.8 25.7 151
SYLVAN ROAD 8120 .2 1.9 11 31.6 21.3 148
YOUNTS PEAK 8350 13.8 11.1 124 31.4 21.8 144
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Basin wide percent of average 121 146
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .4 25* 14.0 13.4 104
BONE SPRINGS DIV 9350 13.7 10.6 129 22.3 21.5 104
BURGESS JUNCTION 7880 6.4 4.9 131 19.2 17.2 112
CLOUD PEAK RESERVOIR 9860 14.5 10.6 137 22.4 20.6 109
DOME LAKE 8880 4.8 5.8 83 20.8 19.6 106
GRAVE SPRINGS 8550 .0 -M * 15.2 15.6 97
HANSEN SAWMILL 8760 .0 1.7 0 14.0 12.6 111
LOST CREEK 8080 10.6 8.1 131 21.4 18.2 118
MIDDLE POWDER 7760 3.5 5.9 59 19.7 17.7 111
POWDER RIVER PASS 9480 7.7 2.7 285 19.6 17.6 111
SUCKER CREEK 8880 10.1 5.9 171 22.9 19.9 115
TIE CREEK 6870 .2 -M * 19.2 16.5 116
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Basin wide percent of average 126 110
BELLE FOURCHE
BLIND PARK 6890 .0 1.4 0 22.1 17.5 126
NORTH RAPID CREEK 6130 .0 -M * 20.7 -M *
WARREN PEAK 6520 .1 1.4 7 18.2 12.8 142
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Basin wide percent of average 4 133
UPPER N. PLATTE RIVER
COLUMBINE 9400 2.7 6.1 44 39.8 30.4 131
DIVIDE PEAK 8800 -M 5.7 * 31.3 30.2 104
ELK RIVER 8700 .5 2.6 19 32.1 24.1 133
JOE WRIGHT 10120 22.1 19.0 116 39.8 34.2 116
NORTH FRENCH CREEK 10100 27.7 22.1 125 38.2 31.6 121
OLD BATTLE 10000 38.7 27.8 139 48.2 39.0 124
SOUTH BRUSH CREEK 8400 .1 2.4 4 23.1 22.9 101
TOWER 10500 58.7 46.3 127 61.8 48.4 128
WEBBER SPRINGS 9200 16.6 13.3 125 43.4 33.2 131
WILLOW CREEK PASS 9540 11.9 4.7 253 22.6 17.8 127
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Basin wide percent of average 124 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.7 16.4 132 35.4 26.6 133
CASPER MTN. 7900 7.4 5.8 128 28.4 22.2 128
CHRISTINA LAKE 9980 14.3 12.0 119 29.0 23.0 126
DEADMAN HILL 10220 14.8 12.7 117 26.4 24.0 110
LAPRELE CREEK 8320 -M 1.7 * 19.6 17.6 111
RENO HILL 8400 7.9 4.6 172 28.4 24.0 118
ROACH 9700 12.5 10.0 125 29.3 29.5 99
SAND LAKE 10080 33.8 27.8 122 38.0 27.8 137
SOUTH PASS 9040 18.5 11.9 155 31.0 23.5 132
WINDY PEAK 7840 .6 1.0 60 16.3 15.1 108
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Basin wide percent of average 129 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * -M 20.5 *
DIVIDE PEAK 8800 -M 5.7 * 31.3 30.2 104
OLD BATTLE 10000 38.7 27.8 139 48.2 39.0 124
SANDSTONE RS 8150 .0 .7 0* 27.2 25.5 107
WHISKEY PARK 8950 -M 15.9 * 42.2 37.6 112
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Basin wide percent of average 136* 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 2.9 0 20.6 20.3 101
BLIND BULL SUM 8650 41.5 18.2 228 38.3 29.1 132
EAST RIM DIVIDE 7930 2.6 8.7 30 20.0 18.9 106
ELKHART PARK G.S. 9400 1.2 6.0 20 22.0 19.9 111
GROS VENTRE SUMMIT 8775 8.4 3.0 280 24.3 19.8 123
KENDALL R.S. 7740 .0 .0 100* 26.2 19.4 135
LOOMIS PARK 8240 -M 3.3 * 31.2 23.4 133
NEW FORK LAKE 8340 .0 1.8 0 16.2 18.0 90
SNIDER BASIN 8250 .0 2.5 0 22.4 18.9 119
SPRING CREEK DIVIDE 9000 23.8 21.1 113 38.5 33.3 116
TRIPLE PEAK 8500 14.5 16.6 87 45.5 38.2 119
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Basin wide percent of average 114 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.8 16.6 119
HEWINTA 9500 .0 .0 100* 18.0 18.6 97
HICKERSON PARK 9150 .0 .2 0* 13.2 14.7 90
HOLE-IN-ROCK 9150 .0 .2 0* 14.1 14.7 96
INDIAN CREEK 9425 25.6 19.6 131 37.8 31.8 119
KELLEY R.S. 8180 1.6 2.9 55 36.1 23.4 154
STEEL CREEK PARK 10100 12.3 13.4 92 20.9 19.2 109
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Basin wide percent of average 109* 115
UPPER BEAR RIVER
BUG LAKE 7950 11.5 4.6 250 35.5 24.5 145
HAYDEN FORK 9400 .3 .2 150* 31.4 25.7 122
KELLEY R.S. 8180 1.6 2.9 55 36.1 23.4 154
LILY LAKE 9050 .4 2.4 17 24.9 20.6 121
MONTE CRISTO 8960 19.3 13.4 144 40.8 33.2 123
SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.0 136
TRIAL LAKE 9960 20.6 14.6 141 40.8 31.2 131
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Basin wide percent of average 141 133
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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.