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 MONDAY: OCTOBER 29 , 2001
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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 .6 83* 2.6 1.8 144
COTTONWOOD CREEK 7600 1.0 .6 167* 2.4 2.0 120
GRANITE CREEK 6770 .4 .5 80* 2.5 2.1 119
GRASSY LAKE 7265 1.0 .9 111* 2.8 3.0 93
GROS VENTRE SUMMIT 8775 1.6 .9 178* 1.3 1.4 93
LEWIS LAKE DIVIDE 7860 1.7 1.2 142* 2.6 3.1 84
PHILLIPS BENCH 8200 2.3 1.0 230* 2.8 2.3 122
SALT RIVER SUMMIT 7600 .1 .0 * 1.2 1.5 80
SNAKE RIVER STATION 6920 .1 .5 20* 2.0 2.1 95
SPRING CREEK DIVIDE 9000 3.0 1.2 250* 3.0 1.9 158
THUMB DIVIDE 7980 .4 .4 100* 1.5 1.7 88
TOGWOTEE PASS 9580 3.2 2.1 152* 3.3 2.3 143
TWO OCEAN PLATEAU 9360 3.1 3.1 100 2.6 2.5 104
WILLOW CREEK 8450 .6 1.0 60* 2.6 2.5 104
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Basin wide percent of average 135* 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 3.2 2.7 119 3.3 1.7 194
BLACK BEAR 7950 -M 2.4 * -M 3.2 *
CANYON 7940 1.2 .7 171* 1.7 1.6 106
FISHER CREEK 9100 3.7 2.3 161* 4.3 2.7 159
MADISON PLATEAU 7750 1.4 1.3 108* 2.4 2.3 104
NORTHEAST ENTRANCE 7350 .2 .2 100* 1.5 1.4 107
PARKER PEAK 9400 1.9 3.3 58 1.5 2.0 75
SYLVAN LAKE 8420 2.0 2.3 87* 2.7 2.3 117
THUMB DIVIDE 7980 .4 .4 100* 1.5 1.7 88
TWO OCEAN PLATEAU 9360 3.1 3.1 100 2.6 2.5 104
WHISKEY CREEK 6800 .8 .7 114* 1.7 2.0 85
WHITE MILL 8700 3.2 1.7 188* 3.0 2.4 125
WOLVERINE 7650 .1 .3 33* 2.2 1.4 157
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Basin wide percent of average 112* 118
WIND RIVER
BURROUGHS CREEK 8750 2.2 .8 275* 2.5 1.4 179
COLD SPRINGS 9630 .4 .8 50* .9 1.7 53
DEER PARK 9700 1.3 -M * 1.6 -M *
HOBBS PARK 10100 1.2 1.9 63 1.2 1.8 67
LITTLE WARM 9620 1.5 .9 167* 1.8 1.6 112
SOUTH PASS 9040 .5 2.4 21 1.5 2.0 75
ST. LAWRENCE ALT 8620 .0 .7 0* .5 1.5 33
TOGWOTEE PASS 9580 3.2 2.1 152* 3.3 2.3 143
TOWNSEND CREEK 8700 .0 .9 0* .5 1.7 29
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Basin wide percent of average 86* 87
BIGHORN BASIN
BALD MTN. 9375 3.7 2.4 154* 3.7 2.1 176
BEAR TRAP MEADOW 7900 1.1 .6 183* 2.1 1.4 150
BLACKWATER 9780 2.6 2.3 113* 2.2 2.2 100
BONE SPRINGS DIV 9350 3.5 2.5 140 3.6 2.0 180
EVENING STAR 9200 2.8 3.4 82 3.9 2.6 150
GRAVE SPRINGS 8550 1.1 .9 122* 2.5 1.7 147
KIRWIN 9550 1.8 1.4 129 1.9 1.4 136
MARQUETTE 8760 .8 .9 89 1.3 1.6 81
MIDDLE POWDER 7760 1.3 1.2 108* 2.3 1.9 121
OWL CREEK 8975 .1 .5 20 .5 .9 56
POWDER RIVER PASS 9480 2.2 1.1 200* 3.2 1.7 188
SHELL CREEK 9580 3.6 2.3 157 3.4 1.7 200
SYLVAN LAKE 8420 2.0 2.3 87* 2.7 2.3 117
SYLVAN ROAD 8120 .6 1.4 43 2.6 2.0 130
TIMBER CREEK 7950 .1 .3 33* 1.0 1.2 83
YOUNTS PEAK 8350 2.2 2.1 105 2.2 1.7 129
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Basin wide percent of average 115 138
SHOSHONE RIVER
BLACKWATER 9780 2.6 2.3 113* 2.2 2.2 100
EVENING STAR 9200 2.8 3.4 82 3.9 2.6 150
KIRWIN 9550 1.8 1.4 129 1.9 1.4 136
MARQUETTE 8760 .8 .9 89 1.3 1.6 81
SYLVAN LAKE 8420 2.0 2.3 87* 2.7 2.3 117
SYLVAN ROAD 8120 .6 1.4 43 2.6 2.0 130
YOUNTS PEAK 8350 2.2 2.1 105 2.2 1.7 129
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Basin wide percent of average 93 122
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.1 .6 183* 2.1 1.4 150
BIG GOOSE 7990 1.4 -M * 3.1 -M *
BONE SPRINGS DIV 9350 3.5 2.5 140 3.6 2.0 180
BURGESS JUNCTION 7880 1.6 1.4 114 2.9 1.8 161
CLOUD PEAK RESERVOIR 9860 2.4 1.2 200* 4.0 1.9 211
DOME LAKE 8880 2.4 1.7 141 3.7 2.1 176
GRAVE SPRINGS 8550 1.1 .9 122* 2.5 1.7 147
HANSEN SAWMILL 8760 .2 .7 29* 2.0 1.4 143
MIDDLE POWDER 7760 1.3 1.2 108* 2.3 1.9 121
POWDER RIVER PASS 9480 2.2 1.1 200* 3.2 1.7 188
SUCKER CREEK 8880 2.6 1.1 236* 4.1 2.0 205
TIE CREEK 6870 .0 -M * 2.8 1.7 165
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Basin wide percent of average 148* 169
BELLE FOURCHE
BLIND PARK 6890 .0 1.5 0 2.7 1.6 169
COLE CANYON 5910 .0 .7 0 1.5 1.3 115
NORTH RAPID CREEK 6130 .2 -M * 2.3 -M *
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Basin wide percent of average 0 145
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 1.4 14* 2.1 2.3 91
DIVIDE PEAK 8800 .4 1.8 22* 2.4 2.8 86
ELK RIVER 8700 .2 .3 67* 1.5 2.1 71
JOE WRIGHT 10120 -M 2.7 * 2.1 3.2 66
NORTH FRENCH CREEK 10100 2.6 1.9 137* 2.2 2.1 105
OLD BATTLE 10000 1.0 3.3 30* 2.5 2.9 86
SOUTH BRUSH CREEK 8400 .1 .3 33* 1.8 2.1 86
TOWER 10500 1.8 5.3 34 2.7 3.6 75
WEBBER SPRINGS 9200 .3 1.7 18* 1.8 2.7 67
WILLOW CREEK PASS 9540 .0 .9 0* .8 1.6 50
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Basin wide percent of average 39* 78
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.8 1.7 106* 2.8 2.2 127
CASPER MTN. 7900 1.7 1.1 155* 3.1 2.3 135
DEADMAN HILL 10220 .6 1.2 50* 1.3 2.2 59
DEER PARK 9700 1.3 -M * 1.6 -M *
LAPRELE CREEK 8320 .4 .8 50* 2.8 1.4 200
RENO HILL 8400 2.0 1.5 133* 3.3 2.3 143
ROACH 9700 .3 1.2 25* 1.1 2.4 46
SAND LAKE 10080 3.0 2.7 111* 3.0 2.3 130
SOUTH PASS 9040 .5 2.4 21 1.5 2.0 75
WINDY PEAK 7840 .2 .2 100* 2.5 1.1 227
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Basin wide percent of average 82* 118
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .3 100* 1.0 1.6 62
DIVIDE PEAK 8800 .4 1.8 22* 2.4 2.8 86
OLD BATTLE 10000 1.0 3.3 30* 2.5 2.9 86
SANDSTONE RS 8150 .0 .7 0* 2.2 1.5 147
WHISKEY PARK 8950 .9 2.0 45* 2.2 1.7 129
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Basin wide percent of average 32* 98
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.4 .6 233* 1.0 1.4 71
BLIND BULL SUM 8650 3.1 1.9 163* 2.6 1.8 144
EAST RIM DIVIDE 7930 .7 .3 233* 1.0 1.4 71
ELKHART PARK G.S. 9400 1.4 .8 175* 1.2 1.4 86
GROS VENTRE SUMMIT 8775 1.6 .9 178* 1.3 1.4 93
KENDALL R.S. 7740 .8 .0 * 1.7 1.4 121
LOOMIS PARK 8240 2.0 .4 500* 2.1 1.6 131
NEW FORK LAKE 8340 .9 .0 * 1.3 1.3 100
SNIDER BASIN 8250 .9 .0 * 2.2 1.4 157
SPRING CREEK DIVIDE 9000 3.0 1.2 250* 3.0 1.9 158
TRIPLE PEAK 8500 2.6 .8 325* 3.8 2.5 152
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Basin wide percent of average 229* 121
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 * .4 1.2 33
HEWINTA 9500 .0 .2 0* 1.6 2.2 73
HICKERSON PARK 9150 .1 .2 50* .6 1.9 32
HOLE-IN-ROCK 9150 .0 .1 0* 2.3 1.9 121
INDIAN CREEK 9425 1.6 1.4 114* 1.4 2.1 67
KELLEY R.S. 8180 .1 .4 25* .8 1.6 50
STEEL CREEK PARK 10100 .9 1.8 50* 1.5 2.2 68
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Basin wide percent of average 66* 66
UPPER BEAR RIVER
BUG LAKE 7950 .0 1.0 0* .6 3.0 20
HAYDEN FORK 9400 .1 .8 12* 1.3 2.3 57
KELLEY R.S. 8180 .1 .4 25* .8 1.6 50
LILY LAKE 9050 .0 .9 0* 1.2 2.4 50
MONTE CRISTO 8960 .0 1.3 0* 1.8 3.2 56
SALT RIVER SUMMIT 7600 .1 .0 * 1.2 1.5 80
TRIAL LAKE 9960 .0 1.7 0* 1.5 2.6 58
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Basin wide percent of average 3* 51
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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.