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: NOVEMBER 30 , 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 3.8 3.8 100 6.1 6.4 95
COTTONWOOD CREEK 7600 3.4 4.1 83 5.1 6.7 76
GRANITE CREEK 6770 2.5 3.3 76 4.8 6.7 72
GRASSY LAKE 7265 7.1 6.7 106 8.9 10.3 86
GROS VENTRE SUMMIT 8775 .9 3.5 26 2.7 4.6 59
LEWIS LAKE DIVIDE 7860 6.8 6.6 103 8.6 10.4 83
PHILLIPS BENCH 8200 4.9 5.4 91 6.0 8.0 75
SALT RIVER SUMMIT 7600 1.8 2.1 86 4.3 4.8 90
SNAKE RIVER STATION 6920 -M 3.7 * -M 7.1 *
SPRING CREEK DIVIDE 9000 3.6 5.8 62 4.5 7.3 62
THUMB DIVIDE 7980 -M 3.5 * -M 5.9 *
TOGWOTEE PASS 9580 6.4 5.9 108 6.6 7.7 86
TWO OCEAN PLATEAU 9360 8.4 7.7 109 8.7 8.7 100
WILLOW CREEK 8450 3.7 5.9 63 6.7 8.8 76
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Basin wide percent of average 88 81
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 6.6 6.8 97 5.4 5.0 108
BLACK BEAR 7950 8.0 8.1 99 8.1 9.7 84
CANYON 7940 3.0 2.6 115 4.4 4.2 105
FISHER CREEK 9100 8.6 8.6 100 8.2 9.0 91
MADISON PLATEAU 7750 4.2 5.2 81 5.6 6.8 82
NORTHEAST ENTRANCE 7350 1.2 1.8 67 4.9 3.6 136
PARKER PEAK 9400 5.5 6.9 80 4.9 4.9 100
SYLVAN LAKE 8420 4.9 6.6 74 6.7 6.4 105
THUMB DIVIDE 7980 -M 3.5 * -M 5.9 *
TWO OCEAN PLATEAU 9360 8.4 7.7 109 8.7 8.7 100
WHISKEY CREEK 6800 2.6 3.7 70 4.4 5.5 80
WHITE MILL 8700 7.6 6.0 127 7.5 7.3 103
WOLVERINE 7650 1.7 2.2 77 3.7 4.0 93
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Basin wide percent of average 94 97
WIND RIVER
BURROUGHS CREEK 8750 3.8 3.6 106 4.5 5.0 90
COLD SPRINGS 9630 2.5 2.6 96 3.2 3.9 82
DEER PARK 9700 -M -M * 5.9 -M *
HOBBS PARK 10100 3.8 4.9 78 3.9 4.3 91
LITTLE WARM 9620 2.1 3.1 68 3.5 4.4 80
SOUTH PASS 9040 3.8 5.2 73 4.9 5.2 94
ST. LAWRENCE ALT 8620 2.6 2.0 130 3.3 3.7 89
TOGWOTEE PASS 9580 6.4 5.9 108 6.6 7.7 86
TOWNSEND CREEK 8700 2.8 2.6 108 4.2 3.8 111
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Basin wide percent of average 93 90
BIGHORN BASIN
BALD MTN. 9375 5.9 5.9 100 5.5 5.0 110
BEAR TRAP MEADOW 7900 1.1 2.1 52 2.2 3.1 71
BLACKWATER 9780 7.5 5.7 132 6.4 5.5 116
BONE SPRINGS DIV 9350 5.4 4.9 110 5.8 4.3 135
EVENING STAR 9200 7.5 8.4 89 9.3 6.7 139
GRAVE SPRINGS 8550 1.5 -M * 2.6 3.5 74
KIRWIN 9550 4.1 3.2 128 4.5 3.6 125
MARQUETTE 8760 4.1 2.4 171 4.6 3.4 135
MIDDLE POWDER 7760 1.8 3.5 51 2.8 4.0 70
OWL CREEK 8975 1.7 1.1 155 2.2 2.0 110
POWDER RIVER PASS 9480 2.4 3.1 77 3.3 3.7 89
SHELL CREEK 9580 4.8 4.7 102 3.7 4.0 93
SYLVAN LAKE 8420 4.9 6.6 74 6.7 6.4 105
SYLVAN ROAD 8120 2.7 3.4 79 6.0 5.1 118
TIMBER CREEK 7950 2.6 1.2 217 3.7 2.5 148
YOUNTS PEAK 8350 5.1 5.3 96 5.0 4.9 102
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Basin wide percent of average 100 110
SHOSHONE RIVER
BLACKWATER 9780 7.5 5.7 132 6.4 5.5 116
EVENING STAR 9200 7.5 8.4 89 9.3 6.7 139
KIRWIN 9550 4.1 3.2 128 4.5 3.6 125
MARQUETTE 8760 4.1 2.4 171 4.6 3.4 135
SYLVAN LAKE 8420 4.9 6.6 74 6.7 6.4 105
SYLVAN ROAD 8120 2.7 3.4 79 6.0 5.1 118
YOUNTS PEAK 8350 5.1 5.3 96 5.0 4.9 102
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Basin wide percent of average 103 119
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.1 2.1 52 2.2 3.1 71
BONE SPRINGS DIV 9350 5.4 4.9 110 5.8 4.3 135
BURGESS JUNCTION 7880 2.2 3.5 63 3.6 3.7 97
CLOUD PEAK RESERVOIR 9860 3.1 3.3 94 4.8 4.2 114
DOME LAKE 8880 3.5 3.9 90 4.8 4.6 104
GRAVE SPRINGS 8550 1.5 -M * 2.6 3.5 74
HANSEN SAWMILL 8760 1.9 2.1 90 2.6 3.0 87
MIDDLE POWDER 7760 1.8 3.5 51 2.8 4.0 70
POWDER RIVER PASS 9480 2.4 3.1 77 3.3 3.7 89
SUCKER CREEK 8880 3.0 2.8 107 5.0 4.1 122
TIE CREEK 6870 1.4 -M * 4.3 3.5 123
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Basin wide percent of average 84 100
BELLE FOURCHE
BLIND PARK 6890 2.5 3.3 76 4.6 3.2 144
NORTH RAPID CREEK 6130 2.6 -M * 3.2 -M *
WARREN PEAK 6520 2.0 3.3 61 3.4 2.7 126
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Basin wide percent of average 68 136
UPPER N. PLATTE RIVER
COLUMBINE 9400 4.1 4.9 84 6.5 6.1 107
DIVIDE PEAK 8800 3.1 5.6 55 5.7 6.6 86
ELK RIVER 8700 3.0 3.5 86 5.5 5.0 110
JOE WRIGHT 10120 5.8 6.5 89 7.8 7.7 101
NORTH FRENCH CREEK 10100 6.5 6.6 98 7.7 6.0 128
OLD BATTLE 10000 6.5 8.6 76 9.1 8.6 106
SOUTH BRUSH CREEK 8400 1.7 2.4 71 3.2 5.1 63
TOWER 10500 11.4 13.5 84 10.5 9.7 108
WEBBER SPRINGS 9200 4.2 6.8 62 7.2 8.3 87
WILLOW CREEK PASS 9540 3.4 3.2 106 3.3 3.8 87
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Basin wide percent of average 81 99
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.2 6.8 62 6.1 5.2 117
CASPER MTN. 7900 3.2 4.6 70 3.9 5.1 76
DEADMAN HILL 10220 5.3 4.4 120 4.5 5.0 90
DEER PARK 9700 -M -M * 5.9 -M *
LAPRELE CREEK 8320 1.7 2.7 63 2.9 3.2 91
RENO HILL 8400 2.6 3.8 68 2.6 6.5 40
ROACH 9700 3.8 4.4 86 5.5 6.1 90
SAND LAKE 10080 7.6 8.7 87 7.8 5.9 132
SOUTH PASS 9040 3.8 5.2 73 4.9 5.2 94
WINDY PEAK 7840 1.3 2.1 62 2.5 2.7 93
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Basin wide percent of average 78 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .6 2.4 25 4.5 4.5 100
DIVIDE PEAK 8800 3.1 5.6 55 5.7 6.6 86
OLD BATTLE 10000 6.5 8.6 76 9.1 8.6 106
SANDSTONE RS 8150 1.8 3.0 60 4.9 5.1 96
WHISKEY PARK 8950 4.8 6.8 71 7.3 6.1 120
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Basin wide percent of average 64 102
UPPER GREEN RIVER
BIG SANDY OPENING 9100 2.5 3.0 83 2.5 4.6 54
BLIND BULL SUM 8650 4.4 7.2 61 4.0 6.2 65
EAST RIM DIVIDE 7930 1.9 1.4 136* 2.4 4.3 56
ELKHART PARK G.S. 9400 2.6 3.0 87 3.2 4.6 70
GROS VENTRE SUMMIT 8775 .9 3.5 26 2.7 4.6 59
KENDALL R.S. 7740 2.5 2.4 104 3.4 4.4 77
LOOMIS PARK 8240 2.6 3.2 81 3.1 5.4 57
NEW FORK LAKE 8340 1.7 2.0 85 2.3 4.1 56
SNIDER BASIN 8250 1.7 2.7 63 2.4 4.3 56
SPRING CREEK DIVIDE 9000 3.6 5.8 62 4.5 7.3 62
TRIPLE PEAK 8500 4.6 5.3 87 4.7 8.8 53
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Basin wide percent of average 73 60
LOWER GREEN RIVER
HAMS FORK 7840 1.4 1.6 88 2.3 3.8 61
HEWINTA 9500 4.1 2.3 178 6.5 4.3 151
HICKERSON PARK 9150 5.1 1.6 319 6.5 3.6 181
HOLE-IN-ROCK 9150 3.3 1.4 236 5.6 3.6 156
INDIAN CREEK 9425 4.2 6.0 70 3.4 7.1 48
KELLEY R.S. 8180 2.0 3.2 62 2.8 5.4 52
STEEL CREEK PARK 10100 5.3 4.9 108 7.5 4.5 167
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Basin wide percent of average 121 107
UPPER BEAR RIVER
BUG LAKE 7950 3.3 4.8 69 4.8 6.4 75
HAYDEN FORK 9400 2.9 3.6 81 6.4 5.4 119
KELLEY R.S. 8180 2.0 3.2 62 2.8 5.4 52
LILY LAKE 9050 3.7 3.5 106 5.9 4.9 120
MONTE CRISTO 8960 3.9 6.0 65 5.9 7.8 76
SALT RIVER SUMMIT 7600 1.8 2.1 86 4.3 4.8 90
TRIAL LAKE 9960 4.1 5.9 69 5.4 7.1 76
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Basin wide percent of average 75 85
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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.