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 SUNDAY: MAY 25 , 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 5.7 2.0 285 40.5 27.3 148
COTTONWOOD CREEK 7600 12.5 5.8 216 41.5 30.4 137
GRANITE CREEK 6770 9.7 4.0 242 36.8 29.1 126
GRASSY LAKE 7265 23.8 18.3 130 63.3 45.3 140
GROS VENTRE SUMMIT 8775 9.7 4.2 231 24.4 19.6 124
LEWIS LAKE DIVIDE 7860 33.8 23.8 142 65.4 46.1 142
PHILLIPS BENCH 8200 29.2 20.8 140 52.4 36.3 144
SALT RIVER SUMMIT 7600 .0 .0 100* 28.4 20.9 136
SNAKE RIVER STATION 6920 .2 4.7 4 42.3 31.8 133
SPRING CREEK DIVIDE 9000 24.4 21.9 111 38.4 33.1 116
THUMB DIVIDE 7980 8.2 4.6 178 38.7 25.5 152
TOGWOTEE PASS 9580 27.7 24.6 113 41.2 34.5 119
TWO OCEAN PLATEAU 9360 39.8 24.1 165 -M 37.6 *
WILLOW CREEK 8450 24.9 22.7 110 56.1 39.1 143
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Basin wide percent of average 138 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 21.7 * 36.5 24.1 151
BLACK BEAR 7950 -M 31.4 * -M 49.7 *
CANYON 7940 5.8 3.5 166 30.4 18.3 166
FISHER CREEK 9100 48.1 34.0 141 57.4 45.9 125
MADISON PLATEAU 7750 21.4 12.2 175 47.3 32.5 146
NORTHEAST ENTRANCE 7350 .2 1.2 17 24.2 15.9 152
PARKER PEAK 9400 27.4 20.3 135 29.0 20.8 139
SYLVAN LAKE 8420 18.8 16.8 112 38.7 25.4 152
THUMB DIVIDE 7980 8.2 4.6 178 38.7 25.5 152
TWO OCEAN PLATEAU 9360 39.8 24.1 165 -M 37.6 *
WHISKEY CREEK 6800 7.0 4.6 152 36.1 27.0 134
WHITE MILL 8700 32.6 21.7 150 37.7 35.7 106
WOLVERINE 7650 .4 1.2 33 20.1 17.4 116
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Basin wide percent of average 145 137
WIND RIVER
BURROUGHS CREEK 8750 9.9 4.0 248 29.9 21.8 137
CHRISTINA LAKE 9980 14.4 12.9 112 28.3 22.7 125
COLD SPRINGS 9630 .2 1.3 15 17.2 15.4 112
HOBBS PARK 10100 14.9 12.4 120 19.8 20.1 99
LITTLE WARM 9620 2.1 2.6 81 26.4 18.6 142
SOUTH PASS 9040 -M 12.7 * 30.2 23.2 130
ST. LAWRENCE ALT 8620 .0 1.0 0 16.6 14.3 116
TOGWOTEE PASS 9580 27.7 24.6 113 41.2 34.5 119
TOWNSEND CREEK 8700 .0 3.6 0 18.7 17.9 104
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Basin wide percent of average 111 121
BIGHORN BASIN
BALD MTN. 9375 19.4 20.9 93 23.1 24.3 95
BEAR TRAP MEADOW 7900 .2 .6 33* 13.8 13.2 105
BLACKWATER 9780 31.9 21.3 150 35.2 23.2 152
BONE SPRINGS DIV 9350 14.6 11.6 126 22.1 21.3 104
EVENING STAR 9200 34.3 27.5 125 47.9 29.0 165
GRAVE SPRINGS 8550 .0 -M * 15.1 15.3 99
KIRWIN 9550 4.9 7.2 68 21.2 15.5 137
LOST CREEK 8080 11.6 9.0 129 21.0 17.9 117
MARQUETTE 8760 4.3 5.5 78 18.0 16.4 110
MIDDLE POWDER 7760 4.6 7.2 64 19.6 17.4 113
OWL CREEK 8975 .2 .5 40 10.7 10.1 106
POWDER RIVER PASS 9480 8.6 3.3 261 19.5 17.4 112
SHELL CREEK 9580 14.1 13.6 104 19.8 18.9 105
SYLVAN LAKE 8420 18.8 16.8 112 38.7 25.4 152
SYLVAN ROAD 8120 .2 2.2 9 31.4 21.1 149
TIMBER CREEK 7950 .2 1.1 18 12.3 12.9 95
YOUNTS PEAK 8350 15.0 11.9 126 31.3 21.6 145
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Basin wide percent of average 114 125
SHOSHONE RIVER
BLACKWATER 9780 31.9 21.3 150 35.2 23.2 152
EVENING STAR 9200 34.3 27.5 125 47.9 29.0 165
KIRWIN 9550 4.9 7.2 68 21.2 15.5 137
MARQUETTE 8760 4.3 5.5 78 18.0 16.4 110
SYLVAN LAKE 8420 18.8 16.8 112 38.7 25.4 152
SYLVAN ROAD 8120 .2 2.2 9 31.4 21.1 149
YOUNTS PEAK 8350 15.0 11.9 126 31.3 21.6 145
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Basin wide percent of average 118 147
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 .6 33* 13.8 13.2 105
BONE SPRINGS DIV 9350 14.6 11.6 126 22.1 21.3 104
BURGESS JUNCTION 7880 7.2 5.9 122 18.7 17.0 110
CLOUD PEAK RESERVOIR 9860 13.8 11.5 120 21.6 20.4 106
DOME LAKE 8880 5.2 6.5 80 20.5 19.3 106
GRAVE SPRINGS 8550 .0 -M * 15.1 15.3 99
HANSEN SAWMILL 8760 .0 2.1 0 13.6 12.4 110
LOST CREEK 8080 11.6 9.0 129 21.0 17.9 117
MIDDLE POWDER 7760 4.6 7.2 64 19.6 17.4 113
POWDER RIVER PASS 9480 8.6 3.3 261 19.5 17.4 112
SUCKER CREEK 8880 10.0 6.7 149 22.6 19.6 115
TIE CREEK 6870 .2 -M * 18.6 16.3 114
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Basin wide percent of average 118 109
BELLE FOURCHE
BLIND PARK 6890 .0 1.9 0 21.1 17.2 123
NORTH RAPID CREEK 6130 .0 -M * 19.3 -M *
WARREN PEAK 6520 .3 2.0 15 16.2 12.6 129
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Basin wide percent of average 8 125
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.3 7.4 45 39.2 30.3 129
DIVIDE PEAK 8800 4.9 6.9 71 30.0 30.0 100
ELK RIVER 8700 1.0 3.6 28 31.5 24.0 131
JOE WRIGHT 10120 21.6 19.8 109 39.1 33.9 115
NORTH FRENCH CREEK 10100 27.5 22.9 120 37.2 31.3 119
OLD BATTLE 10000 38.7 29.3 132 47.4 38.7 122
SOUTH BRUSH CREEK 8400 .0 3.0 0 22.8 22.7 100
TOWER 10500 58.0 47.0 123 60.6 48.0 126
WEBBER SPRINGS 9200 17.1 14.5 118 42.9 33.0 130
WILLOW CREEK PASS 9540 12.8 5.7 225 22.4 17.6 127
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Basin wide percent of average 115 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.6 17.8 127 35.3 26.4 134
CASPER MTN. 7900 8.2 6.7 122 27.7 22.0 126
CHRISTINA LAKE 9980 14.4 12.9 112 28.3 22.7 125
DEADMAN HILL 10220 15.1 13.7 110 25.9 23.8 109
LAPRELE CREEK 8320 .0 2.0 0 18.7 17.3 108
RENO HILL 8400 7.9 5.2 152 27.4 23.9 115
ROACH 9700 13.3 11.0 121 28.9 29.2 99
SAND LAKE 10080 34.8 29.0 120 37.6 27.6 136
SOUTH PASS 9040 -M 12.7 * 30.2 23.2 130
WINDY PEAK 7840 .2 1.4 14 15.2 14.9 102
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Basin wide percent of average 117 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * -M 20.4 *
DIVIDE PEAK 8800 4.9 6.9 71 30.0 30.0 100
OLD BATTLE 10000 38.7 29.3 132 47.4 38.7 122
SANDSTONE RS 8150 .0 .9 0* 26.5 25.3 105
WHISKEY PARK 8950 35.6 17.5 203 41.5 37.3 111
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Basin wide percent of average 145 111
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .1 4.0 3 20.3 20.1 101
BLIND BULL SUM 8650 42.2 18.9 223 38.1 28.9 132
EAST RIM DIVIDE 7930 3.5 9.3 38 20.0 18.8 106
ELKHART PARK G.S. 9400 3.2 6.6 48 22.0 19.7 112
GROS VENTRE SUMMIT 8775 9.7 4.2 231 24.4 19.6 124
KENDALL R.S. 7740 .1 .0 * 26.3 19.2 137
LOOMIS PARK 8240 -M 4.7 * 31.2 23.3 134
NEW FORK LAKE 8340 .1 2.6 4 15.8 17.9 88
SNIDER BASIN 8250 .1 3.5 3 22.4 18.7 120
SPRING CREEK DIVIDE 9000 24.4 21.9 111 38.4 33.1 116
TRIPLE PEAK 8500 14.9 17.4 86 45.0 37.9 119
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Basin wide percent of average 111 118
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 19.7 16.5 119
HEWINTA 9500 .0 .0 100* 17.7 18.4 96
HICKERSON PARK 9150 .0 .2 0* 13.0 14.5 90
HOLE-IN-ROCK 9150 .1 .3 33* 13.8 14.5 95
INDIAN CREEK 9425 25.8 20.5 126 37.6 31.6 119
KELLEY R.S. 8180 2.6 4.1 63 36.0 23.2 155
STEEL CREEK PARK 10100 12.0 13.9 86 20.7 19.0 109
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Basin wide percent of average 104* 115
UPPER BEAR RIVER
BUG LAKE 7950 11.6 5.5 211 35.2 24.4 144
HAYDEN FORK 9400 .5 .3 167* 31.2 25.5 122
KELLEY R.S. 8180 2.6 4.1 63 36.0 23.2 155
LILY LAKE 9050 .4 2.9 14 24.7 20.4 121
MONTE CRISTO 8960 19.3 14.8 130 40.4 32.9 123
SALT RIVER SUMMIT 7600 .0 .0 100* 28.4 20.9 136
TRIAL LAKE 9960 20.4 15.7 130 40.6 30.9 131
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Basin wide percent of average 127 133
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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.