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 25 , 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* 34.4 29.4 118
COTTONWOOD CREEK 7600 .2 .0 * 40.7 32.7 125
GRANITE CREEK 6770 .2 .0 * 32.2 31.7 102
GRASSY LAKE 7265 .0 .0 100* 55.8 48.5 116
GROS VENTRE SUMMIT 8775 .0 .0 100* 23.2 21.4 109
LEWIS LAKE DIVIDE 7860 .0 .0 100* 51.0 49.3 104
PHILLIPS BENCH 8200 .0 .0 100* 41.7 38.8 108
SALT RIVER SUMMIT 7600 .2 .0 * 26.0 22.7 115
SNAKE RIVER STATION 6920 .0 .0 100* 34.8 34.2 102
SPRING CREEK DIVIDE 9000 .0 .0 * 39.7 35.3 113
THUMB DIVIDE 7980 .0 .0 100* 31.2 27.4 114
TOGWOTEE PASS 9580 -M 5.1 * 39.0 37.0 106
TWO OCEAN PLATEAU 9360 20.5 6.0 348 42.3 40.4 105
WILLOW CREEK 8450 .0 .0 100* 54.3 41.9 130
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Basin wide percent of average 348* 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.8 4.8 103 31.2 27.2 116
BLACK BEAR 7950 23.9 6.0 399 65.6 53.8 123
CANYON 7940 .2 .2 100* 26.4 21.0 126
FISHER CREEK 9100 22.7 11.9 192 49.2 50.3 98
MADISON PLATEAU 7750 -M .3 * 42.7 35.8 119
NORTHEAST ENTRANCE 7350 .2 .0 * 20.9 18.7 112
PARKER PEAK 9400 .0 6.5 0 -M 24.2 *
SYLVAN LAKE 8420 6.0 2.3 257* -M 28.9 *
THUMB DIVIDE 7980 .0 .0 100* 31.2 27.4 114
TWO OCEAN PLATEAU 9360 20.5 6.0 348 42.3 40.4 105
WHISKEY CREEK 6800 .0 .0 100* 34.7 30.2 115
WHITE MILL 8700 -M 5.5 * -M 39.3 *
WOLVERINE 7650 .0 .0 100* 17.9 20.2 89
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Basin wide percent of average 210* 112
WIND RIVER
BURROUGHS CREEK 8750 .3 .0 * 27.0 23.9 113
COLD SPRINGS 9630 .2 .0 * 26.9 17.9 151
DEER PARK 9700 .3 -M * 38.2 -M *
HOBBS PARK 10100 2.7 1.4 186* 32.2 22.7 142
LITTLE WARM 9620 .3 .0 * 28.4 20.9 136
SOUTH PASS 9040 -M 1.5 * 34.8 25.9 135
ST. LAWRENCE ALT 8620 .0 .0 100* 23.9 16.4 146
TOGWOTEE PASS 9580 -M 5.1 * 39.0 37.0 106
TOWNSEND CREEK 8700 .2 .0 * 28.4 20.4 140
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Basin wide percent of average 186* 130
BIGHORN BASIN
BALD MTN. 9375 2.0 4.1 49 29.4 27.4 108
BEAR TRAP MEADOW 7900 .3 .0 * 20.7 16.0 129
BLACKWATER 9780 18.2 4.5 412 34.8 27.2 128
BONE SPRINGS DIV 9350 .2 1.0 11* 29.5 24.7 120
EVENING STAR 9200 11.0 9.5 116 45.8 33.4 137
GRAVE SPRINGS 8550 .2 .0 * 21.4 18.7 115
KIRWIN 9550 .0 .5 0* 24.5 18.2 136
MARQUETTE 8760 .0 .5 0* -M 19.4 *
MIDDLE POWDER 7760 .0 .0 100* 27.7 20.7 134
OWL CREEK 8975 .0 .0 100* 19.9 12.4 162
POWDER RIVER PASS 9480 .2 .0 * 25.9 20.5 127
SHELL CREEK 9580 .0 1.5 0* -M 22.7 *
SYLVAN LAKE 8420 6.0 2.3 257* -M 28.9 *
SYLVAN ROAD 8120 .2 .0 * 25.7 24.4 106
TIMBER CREEK 7950 .0 .0 100* 20.7 15.5 134
YOUNTS PEAK 8350 .7 .9 88* 25.9 24.4 107
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Basin wide percent of average 156* 125
SHOSHONE RIVER
BLACKWATER 9780 18.2 4.5 412 34.8 27.2 128
EVENING STAR 9200 11.0 9.5 116 45.8 33.4 137
KIRWIN 9550 .0 .5 0* 24.5 18.2 136
MARQUETTE 8760 .0 .5 0* -M 19.4 *
SYLVAN LAKE 8420 6.0 2.3 257* -M 28.9 *
SYLVAN ROAD 8120 .2 .0 * 25.7 24.4 106
YOUNTS PEAK 8350 .7 .9 88* 25.9 24.4 107
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Basin wide percent of average 202* 123
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .3 .0 * 20.7 16.0 129
BIG GOOSE 7990 .0 -M * 22.4 -M *
BONE SPRINGS DIV 9350 .2 1.0 11* 29.5 24.7 120
BURGESS JUNCTION 7880 .0 .0 100* 21.4 19.7 109
CLOUD PEAK RESERVOIR 9860 .0 1.4 0* 28.7 23.9 121
DOME LAKE 8880 -M .5 * 19.5 22.4 88
GRAVE SPRINGS 8550 .2 .0 * 21.4 18.7 115
HANSEN SAWMILL 8760 .0 .0 100* 20.2 15.5 131
MIDDLE POWDER 7760 .0 .0 100* 27.7 20.7 134
POWDER RIVER PASS 9480 .2 .0 * 25.9 20.5 127
SUCKER CREEK 8880 .0 .2 0* 26.4 23.0 115
TIE CREEK 6870 .0 -M * 22.7 18.9 121
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Basin wide percent of average 5* 118
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 27.2 21.5 127
NORTH RAPID CREEK 6130 .0 -M * 25.2 -M *
WARREN PEAK 6520 .2 .0 * 26.9 16.2 168
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Basin wide percent of average * 144
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 32.4 32.2 101
DIVIDE PEAK 8800 .0 .3 0* 35.9 31.9 113
ELK RIVER 8700 .0 .0 100* 31.7 25.9 123
JOE WRIGHT 10120 .0 3.7 0 -M 36.9 *
NORTH FRENCH CREEK 10100 12.7 5.0 260 42.8 33.9 127
OLD BATTLE 10000 2.9 5.1 57 53.4 41.5 129
SOUTH BRUSH CREEK 8400 5.5 .0 * 29.4 25.4 116
TOWER 10500 18.4 16.7 110 54.2 51.3 106
WEBBER SPRINGS 9200 .0 .9 0* 39.5 35.4 112
WILLOW CREEK PASS 9540 .0 .0 100* 20.7 20.0 104
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Basin wide percent of average 109* 115
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.9 1.5 261* 35.9 28.7 126
CASPER MTN. 7900 .3 .5 50* 28.0 25.0 113
DEADMAN HILL 10220 .0 1.5 0* 27.7 26.4 106
DEER PARK 9700 .3 -M * 38.2 -M *
LAPRELE CREEK 8320 .0 .0 100* 26.9 20.2 134
RENO HILL 8400 .0 .3 0* 30.2 26.4 115
ROACH 9700 -M .5 * -M 31.9 *
SAND LAKE 10080 15.5 6.8 227 44.7 30.5 147
SOUTH PASS 9040 -M 1.5 * 34.8 25.9 135
WINDY PEAK 7840 .0 .0 100* 23.2 17.7 132
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Basin wide percent of average 186* 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 24.9 21.7 115
DIVIDE PEAK 8800 .0 .3 0* 35.9 31.9 113
OLD BATTLE 10000 2.9 5.1 57 53.4 41.5 129
SANDSTONE RS 8150 .3 .0 * 29.2 26.9 109
WHISKEY PARK 8950 .2 .2 100* 42.3 39.3 108
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Basin wide percent of average 56* 116
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 22.7 21.9 104
BLIND BULL SUM 8650 1.7 3.4 50 31.7 30.9 103
EAST RIM DIVIDE 7930 .0 .0 100* 21.0 20.5 103
ELKHART PARK G.S. 9400 .2 .0 * 24.0 21.5 112
GROS VENTRE SUMMIT 8775 .0 .0 100* 23.2 21.4 109
KENDALL R.S. 7740 .0 .0 100* 22.4 21.0 107
LOOMIS PARK 8240 .0 .0 100* 27.7 25.4 109
NEW FORK LAKE 8340 .0 .0 100* 21.2 19.5 109
SNIDER BASIN 8250 .0 .0 100* 26.2 20.5 128
SPRING CREEK DIVIDE 9000 .0 .0 * 39.7 35.3 113
TRIPLE PEAK 8500 .0 .0 100* 42.0 40.8 103
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Basin wide percent of average 50* 109
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 20.4 18.0 113
HEWINTA 9500 .0 .0 100* 22.5 20.7 109
HICKERSON PARK 9150 .0 .0 100* 17.4 16.9 103
HOLE-IN-ROCK 9150 .0 .0 100* 17.9 16.9 106
INDIAN CREEK 9425 4.0 .0 * 38.5 33.9 114
KELLEY R.S. 8180 .0 .0 100* 27.7 25.4 110
STEEL CREEK PARK 10100 .0 1.4 0* 26.7 22.7 118
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Basin wide percent of average 0* 111
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 31.9 26.2 122
HAYDEN FORK 9400 .0 .0 100* 31.2 27.9 112
KELLEY R.S. 8180 .0 .0 100* 27.7 25.4 110
LILY LAKE 9050 .0 .0 100* 27.7 22.9 122
MONTE CRISTO 8960 -M 1.5 * 41.4 35.4 117
SALT RIVER SUMMIT 7600 .2 .0 * 26.0 22.7 115
TRIAL LAKE 9960 .5 1.5 34* 34.2 33.4 103
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Basin wide percent of average 34* 114
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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.