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 THURSDAY: MAY 29 , 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 3.2 .8 400* 41.2 27.6 149
COTTONWOOD CREEK 7600 10.3 2.5 412 41.9 30.8 136
GRANITE CREEK 6770 6.3 2.7 233 37.1 29.5 126
GRASSY LAKE 7265 21.4 14.7 146 64.6 45.9 141
GROS VENTRE SUMMIT 8775 7.1 1.8 394 24.5 19.9 123
LEWIS LAKE DIVIDE 7860 30.7 21.5 143 65.8 46.7 141
PHILLIPS BENCH 8200 27.0 19.0 142 53.0 36.8 144
SALT RIVER SUMMIT 7600 .0 .0 100* 28.6 21.2 135
SNAKE RIVER STATION 6920 .1 2.0 5 43.0 32.2 134
SPRING CREEK DIVIDE 9000 22.7 20.2 112 38.6 33.5 115
THUMB DIVIDE 7980 5.2 2.0 260 38.8 25.9 150
TOGWOTEE PASS 9580 27.1 24.0 113 41.7 35.0 119
TWO OCEAN PLATEAU 9360 40.4 23.2 174 -M 38.0 *
WILLOW CREEK 8450 23.2 20.7 112 56.6 39.6 143
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Basin wide percent of average 145 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 32.7 20.4 160 36.9 24.6 150
BLACK BEAR 7950 -M 29.2 * -M 50.2 *
CANYON 7940 3.5 2.3 152 30.5 18.6 164
FISHER CREEK 9100 49.4 32.7 151 57.9 46.5 125
MADISON PLATEAU 7750 18.6 9.5 196 47.5 33.0 144
NORTHEAST ENTRANCE 7350 .2 .6 33* 24.5 16.2 151
PARKER PEAK 9400 27.2 19.3 141 29.7 21.2 140
SYLVAN LAKE 8420 16.9 15.2 111 38.9 25.9 150
THUMB DIVIDE 7980 5.2 2.0 260 38.8 25.9 150
TWO OCEAN PLATEAU 9360 40.4 23.2 174 -M 38.0 *
WHISKEY CREEK 6800 2.8 2.7 104 36.6 27.3 134
WHITE MILL 8700 31.9 20.4 156 38.1 36.2 105
WOLVERINE 7650 .3 .5 60* 20.7 17.8 116
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Basin wide percent of average 154 136
WIND RIVER
BURROUGHS CREEK 8750 6.3 2.9 217 30.0 22.2 135
CHRISTINA LAKE 9980 13.7 11.2 122 29.1 23.2 125
COLD SPRINGS 9630 .2 .7 29* 17.8 15.8 113
HOBBS PARK 10100 15.0 10.6 142 21.3 20.6 103
LITTLE WARM 9620 .3 1.5 20 26.7 19.0 141
SOUTH PASS 9040 14.6 11.1 132 31.1 23.7 131
ST. LAWRENCE ALT 8620 .0 .5 0* 17.8 14.6 122
TOGWOTEE PASS 9580 27.1 24.0 113 41.7 35.0 119
TOWNSEND CREEK 8700 .0 2.6 0 20.0 18.3 109
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Basin wide percent of average 119 122
BIGHORN BASIN
BALD MTN. 9375 18.9 19.5 97 24.0 24.9 96
BEAR TRAP MEADOW 7900 .2 .2 100* 14.0 13.6 103
BLACKWATER 9780 32.1 19.9 161 35.4 23.7 149
BONE SPRINGS DIV 9350 12.5 9.6 130 22.5 21.8 103
EVENING STAR 9200 34.0 26.3 129 48.2 29.5 163
GRAVE SPRINGS 8550 .0 -M * 15.5 15.8 98
KIRWIN 9550 2.3 6.0 38 21.8 15.9 137
LOST CREEK 8080 9.4 7.2 131 21.7 18.4 118
MARQUETTE 8760 2.3 4.7 49 18.3 16.9 108
MIDDLE POWDER 7760 1.6 4.5 36 20.2 17.9 113
OWL CREEK 8975 .2 .3 67* 11.2 10.4 108
POWDER RIVER PASS 9480 7.0 2.2 318 19.8 17.9 111
SHELL CREEK 9580 13.5 12.2 111 20.2 19.4 104
SYLVAN LAKE 8420 16.9 15.2 111 38.9 25.9 150
SYLVAN ROAD 8120 .2 1.5 13 31.4 21.5 146
TIMBER CREEK 7950 .1 .6 17* 13.3 13.4 99
YOUNTS PEAK 8350 12.4 10.3 120 31.5 22.0 143
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Basin wide percent of average 117 124
SHOSHONE RIVER
BLACKWATER 9780 32.1 19.9 161 35.4 23.7 149
EVENING STAR 9200 34.0 26.3 129 48.2 29.5 163
KIRWIN 9550 2.3 6.0 38 21.8 15.9 137
MARQUETTE 8760 2.3 4.7 49 18.3 16.9 108
SYLVAN LAKE 8420 16.9 15.2 111 38.9 25.9 150
SYLVAN ROAD 8120 .2 1.5 13 31.4 21.5 146
YOUNTS PEAK 8350 12.4 10.3 120 31.5 22.0 143
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Basin wide percent of average 119 145
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 .2 100* 14.0 13.6 103
BONE SPRINGS DIV 9350 12.5 9.6 130 22.5 21.8 103
BURGESS JUNCTION 7880 5.1 3.9 131 19.3 17.4 111
CLOUD PEAK RESERVOIR 9860 14.2 9.7 146 22.8 20.9 109
DOME LAKE 8880 3.7 5.0 74 21.0 19.8 106
GRAVE SPRINGS 8550 .0 -M * 15.5 15.8 98
HANSEN SAWMILL 8760 .0 1.4 0 14.2 12.7 112
LOST CREEK 8080 9.4 7.2 131 21.7 18.4 118
MIDDLE POWDER 7760 1.6 4.5 36 20.2 17.9 113
POWDER RIVER PASS 9480 7.0 2.2 318 19.8 17.9 111
SUCKER CREEK 8880 9.8 5.1 192 23.2 20.1 115
TIE CREEK 6870 .2 -M * 19.5 16.7 117
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Basin wide percent of average 130 110
BELLE FOURCHE
BLIND PARK 6890 .0 .8 0* 22.2 17.8 125
NORTH RAPID CREEK 6130 .0 -M * 20.7 -M *
WARREN PEAK 6520 .1 .9 11* 18.3 13.0 141
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Basin wide percent of average 6* 131
UPPER N. PLATTE RIVER
COLUMBINE 9400 .4 4.7 9 40.1 30.6 131
DIVIDE PEAK 8800 4.2 4.6 91 31.8 30.5 104
ELK RIVER 8700 .0 1.7 0* 32.2 24.3 133
JOE WRIGHT 10120 22.3 18.3 122 40.4 34.5 117
NORTH FRENCH CREEK 10100 28.3 21.3 133 38.8 31.9 122
OLD BATTLE 10000 38.9 26.3 148 48.6 39.2 124
SOUTH BRUSH CREEK 8400 .0 1.9 0 23.5 23.0 102
TOWER 10500 59.9 45.5 132 62.5 48.8 128
WEBBER SPRINGS 9200 15.6 12.1 129 43.5 33.4 130
WILLOW CREEK PASS 9540 10.5 3.7 284 23.0 18.0 128
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Basin wide percent of average 129 122
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.0 14.9 148 35.9 26.8 134
CASPER MTN. 7900 6.4 4.9 131 28.7 22.5 128
CHRISTINA LAKE 9980 13.7 11.2 122 29.1 23.2 125
DEADMAN HILL 10220 15.1 11.7 129 26.8 24.3 110
LAPRELE CREEK 8320 .4 1.4 29 19.9 17.8 112
RENO HILL 8400 7.6 3.9 195 28.5 24.1 118
ROACH 9700 11.7 9.0 130 29.7 29.8 100
SAND LAKE 10080 33.9 26.5 128 38.7 28.1 138
SOUTH PASS 9040 14.6 11.1 132 31.1 23.7 131
WINDY PEAK 7840 .2 .6 33* 16.9 15.4 110
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Basin wide percent of average 132 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * -M 20.7 *
DIVIDE PEAK 8800 4.2 4.6 91 31.8 30.5 104
OLD BATTLE 10000 38.9 26.3 148 48.6 39.2 124
SANDSTONE RS 8150 .0 .4 0* 27.8 25.7 108
WHISKEY PARK 8950 35.9 14.3 251 42.5 37.9 112
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Basin wide percent of average 173 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .1 1.7 6 20.7 20.4 101
BLIND BULL SUM 8650 40.1 17.5 229 38.7 29.2 133
EAST RIM DIVIDE 7930 .9 8.0 11 20.2 19.0 106
ELKHART PARK G.S. 9400 .3 5.4 6 22.1 20.0 111
GROS VENTRE SUMMIT 8775 7.1 1.8 394 24.5 19.9 123
KENDALL R.S. 7740 .0 .0 100* 26.3 19.5 135
LOOMIS PARK 8240 -M 2.0 * 31.3 23.6 133
NEW FORK LAKE 8340 .1 1.1 9* 16.9 18.1 93
SNIDER BASIN 8250 .0 1.5 0* 22.4 19.0 118
SPRING CREEK DIVIDE 9000 22.7 20.2 112 38.6 33.5 115
TRIPLE PEAK 8500 13.1 15.8 83 45.8 38.4 119
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Basin wide percent of average 116 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.9 16.7 119
HEWINTA 9500 .0 .0 100* 17.9 18.7 96
HICKERSON PARK 9150 .0 .1 0* 13.4 14.9 90
HOLE-IN-ROCK 9150 .1 .2 50* 14.1 14.9 95
INDIAN CREEK 9425 25.0 18.7 134 37.9 32.0 118
KELLEY R.S. 8180 .8 1.8 44 36.3 23.6 154
STEEL CREEK PARK 10100 11.7 12.8 91 21.1 19.4 109
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Basin wide percent of average 112* 115
UPPER BEAR RIVER
BUG LAKE 7950 9.0 3.7 243 35.5 24.7 144
HAYDEN FORK 9400 .5 .1 500* 31.4 25.9 121
KELLEY R.S. 8180 .8 1.8 44 36.3 23.6 154
LILY LAKE 9050 .1 1.8 6 24.9 20.8 120
MONTE CRISTO 8960 17.4 11.9 146 40.9 33.4 122
SALT RIVER SUMMIT 7600 .0 .0 100* 28.6 21.2 135
TRIAL LAKE 9960 19.8 13.6 146 40.8 31.4 130
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Basin wide percent of average 145 132
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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.