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: MAY 28 , 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 4.0 1.1 364* 40.7 27.6 147
COTTONWOOD CREEK 7600 11.0 3.3 333 41.8 30.7 136
GRANITE CREEK 6770 7.1 3.0 237 37.0 29.4 126
GRASSY LAKE 7265 22.3 15.6 143 63.5 45.7 139
GROS VENTRE SUMMIT 8775 7.8 2.4 325 24.3 19.8 123
LEWIS LAKE DIVIDE 7860 31.4 22.1 142 65.5 46.5 141
PHILLIPS BENCH 8200 27.7 19.4 143 52.7 36.6 144
SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.1 135
SNAKE RIVER STATION 6920 .1 2.7 4 42.4 32.1 132
SPRING CREEK DIVIDE 9000 23.9 20.6 116 38.5 33.4 115
THUMB DIVIDE 7980 6.5 2.6 250 38.8 25.8 150
TOGWOTEE PASS 9580 27.8 24.2 115 41.4 34.9 119
TWO OCEAN PLATEAU 9360 40.1 23.4 171 -M 37.9 *
WILLOW CREEK 8450 23.9 21.2 113 56.2 39.5 142
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Basin wide percent of average 145 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 33.2 20.7 160 36.8 24.5 150
BLACK BEAR 7950 -M 29.7 * -M 50.1 *
CANYON 7940 4.3 2.6 165 30.4 18.6 163
FISHER CREEK 9100 48.7 33.0 148 57.8 46.4 125
MADISON PLATEAU 7750 19.7 10.2 193 47.4 32.9 144
NORTHEAST ENTRANCE 7350 .2 .8 25* 24.3 16.2 150
PARKER PEAK 9400 27.3 19.6 139 29.6 21.1 140
SYLVAN LAKE 8420 18.2 15.6 117 38.8 25.8 150
THUMB DIVIDE 7980 6.5 2.6 250 38.8 25.8 150
TWO OCEAN PLATEAU 9360 40.1 23.4 171 -M 37.9 *
WHISKEY CREEK 6800 3.7 3.2 116 36.5 27.3 134
WHITE MILL 8700 32.4 20.7 157 37.9 36.1 105
WOLVERINE 7650 .3 .7 43* 20.7 17.7 117
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Basin wide percent of average 153 136
WIND RIVER
BURROUGHS CREEK 8750 7.3 3.2 228 29.9 22.1 135
CHRISTINA LAKE 9980 14.1 11.6 122 29.0 23.1 126
COLD SPRINGS 9630 .2 .9 22 17.8 15.7 113
HOBBS PARK 10100 15.4 11.1 139 21.2 20.4 104
LITTLE WARM 9620 .4 1.8 22 26.5 18.9 140
SOUTH PASS 9040 -M 11.5 * 31.0 23.6 131
ST. LAWRENCE ALT 8620 .1 .6 17* 17.8 14.5 123
TOGWOTEE PASS 9580 27.8 24.2 115 41.4 34.9 119
TOWNSEND CREEK 8700 .2 2.8 7 20.0 18.2 110
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Basin wide percent of average 117 123
BIGHORN BASIN
BALD MTN. 9375 19.2 19.9 96 24.0 24.7 97
BEAR TRAP MEADOW 7900 .1 .3 33* 13.9 13.5 103
BLACKWATER 9780 32.2 20.2 159 35.4 23.6 150
BONE SPRINGS DIV 9350 13.0 10.1 129 22.4 21.7 103
EVENING STAR 9200 34.4 26.6 129 48.1 29.4 164
GRAVE SPRINGS 8550 .0 -M * 15.3 15.7 97
KIRWIN 9550 3.0 6.3 48 21.7 15.8 137
LOST CREEK 8080 10.1 7.6 133 21.5 18.3 117
MARQUETTE 8760 3.1 4.9 63 18.3 16.8 109
MIDDLE POWDER 7760 2.6 5.2 50 19.9 17.8 112
OWL CREEK 8975 .2 .3 67* 11.0 10.4 106
POWDER RIVER PASS 9480 7.8 2.5 312 19.8 17.7 112
SHELL CREEK 9580 13.8 12.6 110 20.2 19.3 105
SYLVAN LAKE 8420 18.2 15.6 117 38.8 25.8 150
SYLVAN ROAD 8120 .2 1.7 12 31.5 21.4 147
TIMBER CREEK 7950 .1 .7 14 13.2 13.3 99
YOUNTS PEAK 8350 13.2 10.7 123 31.4 21.9 143
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Basin wide percent of average 118 124
SHOSHONE RIVER
BLACKWATER 9780 32.2 20.2 159 35.4 23.6 150
EVENING STAR 9200 34.4 26.6 129 48.1 29.4 164
KIRWIN 9550 3.0 6.3 48 21.7 15.8 137
MARQUETTE 8760 3.1 4.9 63 18.3 16.8 109
SYLVAN LAKE 8420 18.2 15.6 117 38.8 25.8 150
SYLVAN ROAD 8120 .2 1.7 12 31.5 21.4 147
YOUNTS PEAK 8350 13.2 10.7 123 31.4 21.9 143
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Basin wide percent of average 121 146
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .3 33* 13.9 13.5 103
BONE SPRINGS DIV 9350 13.0 10.1 129 22.4 21.7 103
BURGESS JUNCTION 7880 5.8 4.4 132 19.2 17.3 111
CLOUD PEAK RESERVOIR 9860 14.6 10.1 145 22.6 20.8 109
DOME LAKE 8880 4.5 5.4 83 21.0 19.7 107
GRAVE SPRINGS 8550 .0 -M * 15.3 15.7 97
HANSEN SAWMILL 8760 .0 1.6 0 14.2 12.7 112
LOST CREEK 8080 10.1 7.6 133 21.5 18.3 117
MIDDLE POWDER 7760 2.6 5.2 50 19.9 17.8 112
POWDER RIVER PASS 9480 7.8 2.5 312 19.8 17.7 112
SUCKER CREEK 8880 10.1 5.5 184 23.1 20.0 116
TIE CREEK 6870 .1 -M * 19.4 16.6 117
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Basin wide percent of average 130 110
BELLE FOURCHE
BLIND PARK 6890 .0 1.1 0* 22.1 17.6 126
NORTH RAPID CREEK 6130 .0 -M * 20.7 -M *
WARREN PEAK 6520 .1 1.2 8* 18.2 12.9 141
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Basin wide percent of average 4* 132
UPPER N. PLATTE RIVER
COLUMBINE 9400 2.1 5.4 39 39.8 30.5 130
DIVIDE PEAK 8800 4.8 5.2 92 31.5 30.3 104
ELK RIVER 8700 .0 2.2 0 32.5 24.2 134
JOE WRIGHT 10120 22.3 18.7 119 40.1 34.3 117
NORTH FRENCH CREEK 10100 28.0 21.7 129 38.5 31.7 121
OLD BATTLE 10000 39.0 27.0 144 48.5 39.1 124
SOUTH BRUSH CREEK 8400 .0 2.2 0 23.4 23.0 102
TOWER 10500 59.2 45.9 129 62.2 48.6 128
WEBBER SPRINGS 9200 16.8 12.7 132 43.5 33.3 131
WILLOW CREEK PASS 9540 11.5 4.2 274 22.8 17.9 127
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Basin wide percent of average 127 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.0 15.6 141 35.7 26.7 134
CASPER MTN. 7900 7.2 5.3 136 28.4 22.4 127
CHRISTINA LAKE 9980 14.1 11.6 122 29.0 23.1 126
DEADMAN HILL 10220 15.0 12.2 123 26.6 24.1 110
LAPRELE CREEK 8320 .2 1.6 12 19.6 17.7 111
RENO HILL 8400 7.9 4.2 188 28.3 24.1 117
ROACH 9700 12.2 9.5 128 29.4 29.6 99
SAND LAKE 10080 33.3 27.1 123 38.3 27.9 137
SOUTH PASS 9040 -M 11.5 * 31.0 23.6 131
WINDY PEAK 7840 .2 .8 25* 16.4 15.2 108
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Basin wide percent of average 128 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * -M 20.6 *
DIVIDE PEAK 8800 4.8 5.2 92 31.5 30.3 104
OLD BATTLE 10000 39.0 27.0 144 48.5 39.1 124
SANDSTONE RS 8150 .0 .5 0* 27.5 25.6 107
WHISKEY PARK 8950 37.0 15.1 245 42.4 37.7 112
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Basin wide percent of average 169 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 2.3 0 20.6 20.3 101
BLIND BULL SUM 8650 40.5 17.8 228 38.3 29.2 131
EAST RIM DIVIDE 7930 1.9 8.3 23 20.0 19.0 105
ELKHART PARK G.S. 9400 .5 5.7 9 22.0 19.9 111
GROS VENTRE SUMMIT 8775 7.8 2.4 325 24.3 19.8 123
KENDALL R.S. 7740 .0 .0 100* 26.2 19.4 135
LOOMIS PARK 8240 -M 2.7 * 31.2 23.5 133
NEW FORK LAKE 8340 .0 1.5 0 16.4 18.1 91
SNIDER BASIN 8250 .0 2.0 0 22.4 18.9 119
SPRING CREEK DIVIDE 9000 23.9 20.6 116 38.5 33.4 115
TRIPLE PEAK 8500 13.9 16.2 86 45.5 38.3 119
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Basin wide percent of average 115 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.8 16.7 119
HEWINTA 9500 .0 .0 100* 17.9 18.7 96
HICKERSON PARK 9150 .0 .1 0* 13.3 14.8 90
HOLE-IN-ROCK 9150 .0 .2 0* 14.1 14.8 95
INDIAN CREEK 9425 25.5 19.2 133 37.8 31.9 118
KELLEY R.S. 8180 1.0 2.4 42 36.2 23.5 154
STEEL CREEK PARK 10100 11.9 13.1 91 20.9 19.3 108
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Basin wide percent of average 110* 115
UPPER BEAR RIVER
BUG LAKE 7950 10.4 4.1 254 35.5 24.6 144
HAYDEN FORK 9400 .4 .2 200* 31.4 25.8 122
KELLEY R.S. 8180 1.0 2.4 42 36.2 23.5 154
LILY LAKE 9050 .1 2.1 5 24.9 20.7 120
MONTE CRISTO 8960 18.4 12.6 146 40.8 33.3 123
SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.1 135
TRIAL LAKE 9960 20.5 14.1 145 40.7 31.3 130
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Basin wide percent of average 143 132
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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.