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 SATURDAY: OCTOBER 31 , 1998
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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 .7 0* 1.0 1.9 53
COTTONWOOD CREEK 7600 .0 .7 0* 3.1 2.1 148
GRANITE CREEK 6770 .2 .6 33* .8 2.2 36
GRASSY LAKE 7265 .2 1.0 20* 1.8 3.2 56
GROS VENTRE SUMMIT 8775 1.0 1.0 100* 1.8 1.5 120
LEWIS LAKE DIVIDE 7860 .3 1.3 23* 1.4 3.3 42
PHILLIPS BENCH 8200 .5 1.1 45* 1.1 2.5 44
SALT RIVER SUMMIT 7600 .1 .0 * 2.0 1.6 125
SNAKE RIVER STATION 6920 .1 .6 17* 1.1 2.2 50
SPRING CREEK DIVIDE 9000 .8 1.3 62* 2.3 2.0 115
THUMB DIVIDE 7980 .4 .5 80* .9 1.8 50
TOGWOTEE PASS 9580 2.0 2.2 91* 2.2 2.4 92
TWO OCEAN PLATEAU 9360 2.4 3.4 71 2.2 2.7 81
WILLOW CREEK 8450 .0 1.1 0* 3.7 2.7 137
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Basin wide percent of average 51* 79
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.3 2.9 45 1.0 1.8 56
BLACK BEAR 7950 1.7 2.6 65* 2.2 3.4 65
CANYON 7940 .0 .8 0* .4 1.7 24
FISHER CREEK 9100 1.3 2.5 52* 1.6 2.9 55
MADISON PLATEAU 7750 .1 1.4 7* 1.3 2.4 54
NORTHEAST ENTRANCE 7350 .1 .3 33* .8 1.5 53
PARKER PEAK 9400 1.1 3.6 31 1.0 2.1 48
SYLVAN LAKE 8420 .4 2.4 17 1.6 2.5 64
THUMB DIVIDE 7980 .4 .5 80* .9 1.8 50
TWO OCEAN PLATEAU 9360 2.4 3.4 71 2.2 2.7 81
WHISKEY CREEK 6800 .3 .8 38* 1.0 2.1 48
WHITE MILL 8700 .7 1.8 39* 1.3 2.6 50
WOLVERINE 7650 .1 .3 33* 1.4 1.5 93
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Basin wide percent of average 42* 58
WIND RIVER
BURROUGHS CREEK 8750 .9 .9 100* 1.5 1.5 100
COLD SPRINGS 9630 1.2 .9 133* 2.4 1.8 133
DEER PARK 9700 2.5 -M * 3.6 -M *
HOBBS PARK 10100 3.5 2.0 175 4.2 1.9 221
LITTLE WARM 9620 .8 1.0 80* 1.7 1.7 100
SOUTH PASS 9040 1.7 2.5 68 3.3 2.1 157
ST. LAWRENCE ALT 8620 1.0 .8 125 3.1 1.6 194
TOGWOTEE PASS 9580 2.0 2.2 91* 2.2 2.4 92
TOWNSEND CREEK 8700 1.9 1.0 190* 4.0 1.8 222
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Basin wide percent of average 115* 151
BIGHORN BASIN
BALD MTN. 9375 3.1 2.5 124 3.3 2.2 150
BEAR TRAP MEADOW 7900 .8 .7 114* 3.7 1.5 247
BLACKWATER 9780 2.4 2.4 100* 2.5 2.3 109
BONE SPRINGS DIV 9350 2.4 2.6 92 2.9 2.1 138
EVENING STAR 9200 .5 3.7 14 1.2 2.8 43
GRAVE SPRINGS 8550 1.3 -M * 4.1 1.8 228
KIRWIN 9550 2.0 1.5 133 2.4 1.5 160
LOST CREEK 8080 -M 1.3 * -M 1.9 *
MARQUETTE 8760 2.5 1.0 250 3.4 1.7 200
MIDDLE POWDER 7760 .5 1.3 38* 6.4 2.0 320
OWL CREEK 8975 1.6 .5 320 2.2 1.0 220
POWDER RIVER PASS 9480 .7 1.2 58* 2.5 1.8 139
SHELL CREEK 9580 2.9 2.4 121 2.4 1.8 133
SYLVAN LAKE 8420 .4 2.4 17 1.6 2.5 64
SYLVAN ROAD 8120 .2 1.5 13 .6 2.1 29
TIMBER CREEK 7950 1.5 .3 500* 2.8 1.3 215
YOUNTS PEAK 8350 1.3 2.2 59 1.1 1.8 61
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Basin wide percent of average 87 143
SHOSHONE RIVER
BLACKWATER 9780 2.4 2.4 100* 2.5 2.3 109
EVENING STAR 9200 .5 3.7 14 1.2 2.8 43
KIRWIN 9550 2.0 1.5 133 2.4 1.5 160
MARQUETTE 8760 2.5 1.0 250 3.4 1.7 200
SYLVAN LAKE 8420 .4 2.4 17 1.6 2.5 64
SYLVAN ROAD 8120 .2 1.5 13 .6 2.1 29
YOUNTS PEAK 8350 1.3 2.2 59 1.1 1.8 61
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Basin wide percent of average 63 87
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .8 .7 114* 3.7 1.5 247
BONE SPRINGS DIV 9350 2.4 2.6 92 2.9 2.1 138
BURGESS JUNCTION 7880 .8 1.5 53 3.2 1.9 168
CLOUD PEAK RESERVOIR 9860 2.1 1.3 162* 3.6 2.0 180
DOME LAKE 8880 1.2 1.8 67 2.8 2.2 127
GRAVE SPRINGS 8550 1.3 -M * 4.1 1.8 228
HANSEN SAWMILL 8760 .4 .8 50 2.1 1.5 140
LOST CREEK 8080 -M 1.3 * -M 1.9 *
MIDDLE POWDER 7760 .5 1.3 38* 6.4 2.0 320
POWDER RIVER PASS 9480 .7 1.2 58* 2.5 1.8 139
SUCKER CREEK 8880 1.8 1.2 150* 3.3 2.1 157
TIE CREEK 6870 .2 -M * 3.5 1.8 194
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Basin wide percent of average 86* 184
BELLE FOURCHE
BLIND PARK 6890 .1 1.6 6 5.8 1.7 341
NORTH RAPID CREEK 6130 .0 -M * 6.3 -M *
WARREN PEAK 6520 .0 1.6 0 6.1 1.4 436
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Basin wide percent of average 3 384
UPPER N. PLATTE RIVER
COLUMBINE 9400 1.1 1.5 73* 3.8 2.4 158
DIVIDE PEAK 8800 1.3 2.0 65* 6.1 3.0 203
ELK RIVER 8700 .7 .4 175* 6.1 2.2 277
JOE WRIGHT 10120 3.8 3.0 127 6.2 3.4 182
NORTH FRENCH CREEK 10100 5.1 2.1 243* 7.3 2.2 332
OLD BATTLE 10000 2.8 3.5 80* 5.7 3.1 184
SOUTH BRUSH CREEK 8400 2.6 .4 650* -M 2.2 *
TOWER 10500 2.8 5.8 48 6.2 3.9 159
WEBBER SPRINGS 9200 .7 1.8 39* 4.2 2.9 145
WILLOW CREEK PASS 9540 1.2 1.0 120* 2.9 1.7 171
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Basin wide percent of average 103* 196
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.6 1.8 89* .0 2.3 0
CASPER MTN. 7900 2.1 1.2 175* 7.6 2.4 317
DEADMAN HILL 10220 3.4 1.3 262* 4.3 2.3 187
DEER PARK 9700 2.5 -M * 3.6 -M *
LAPRELE CREEK 8320 .0 .9 0* 5.1 1.5 340
RENO HILL 8400 3.8 1.6 238 7.5 2.4 313
ROACH 9700 1.5 1.3 115* 3.6 2.6 138
SAND LAKE 10080 5.4 3.0 180* 7.5 2.5 300
SOUTH PASS 9040 1.7 2.5 68 3.3 2.1 157
WINDY PEAK 7840 .0 .2 0* 4.9 1.2 408
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Basin wide percent of average 141* 227
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .4 0* 3.8 1.7 224
DIVIDE PEAK 8800 1.3 2.0 65* 6.1 3.0 203
OLD BATTLE 10000 2.8 3.5 80* 5.7 3.1 184
SANDSTONE RS 8150 .1 .8 12* 4.6 1.6 288
WHISKEY PARK 8950 1.3 2.2 59* 5.8 1.8 322
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Basin wide percent of average 62* 232
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.4 .7 200* 2.0 1.5 133
BLIND BULL SUM 8650 .8 2.2 36* 2.0 1.9 105
EAST RIM DIVIDE 7930 .2 .4 50* 1.4 1.5 93
ELKHART PARK G.S. 9400 1.3 .9 144* 2.2 1.5 147
GROS VENTRE SUMMIT 8775 1.0 1.0 100* 1.8 1.5 120
KENDALL R.S. 7740 .5 .0 * 1.3 1.5 87
LOOMIS PARK 8240 .4 .5 80* 1.8 1.7 106
NEW FORK LAKE 8340 .5 .0 * 1.1 1.4 79
SNIDER BASIN 8250 .3 .0 * 1.2 1.5 80
SPRING CREEK DIVIDE 9000 .8 1.3 62* 2.3 2.0 115
TRIPLE PEAK 8500 .6 .9 67* 2.0 2.7 74
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Basin wide percent of average 82* 102
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 1.8 1.3 138
HEWINTA 9500 .0 .2 0* 2.5 2.3 109
HICKERSON PARK 9150 .7 .2 350* 2.6 2.0 130
HOLE-IN-ROCK 9150 .5 .1 500* 3.3 2.0 165
INDIAN CREEK 9425 1.5 1.6 94* 2.0 2.2 91
KELLEY R.S. 8180 .4 .5 80* 1.9 1.7 112
STEEL CREEK PARK 10100 1.8 1.9 95 3.1 2.3 135
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Basin wide percent of average 109* 125
UPPER BEAR RIVER
BUG LAKE 7950 .0 1.1 0* 2.3 3.2 72
HAYDEN FORK 9400 .1 .9 11* 2.2 2.4 92
KELLEY R.S. 8180 .4 .5 80* 1.9 1.7 112
LILY LAKE 9050 1.5 1.0 150* 3.3 2.6 127
MONTE CRISTO 8960 .5 1.4 36* 3.0 3.4 88
SALT RIVER SUMMIT 7600 .1 .0 * 2.0 1.6 125
TRIAL LAKE 9960 .8 1.8 44* 2.3 2.8 82
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Basin wide percent of average 49* 96
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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.