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: APRIL 1 , 2012
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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 18.2 18.1 101 24.2 21.7 112
BLACK BEAR 8170 -M 39.8 * 41.6 40.9 102
BLIND BULL SUM 8650 22.4 28.3 79 17.3 22.5 77
COTTONWOOD CREEK 7670 18.1 24.2 75 24.4 27.8 88
EAST RIM DIVIDE 7930 9.2 13.3 69 11.5 12.2 94
GRAND TARGHEE 9260 37.5 -M * 30.0 -M *
GRANITE CREEK 6770 13.5 18.6 73 16.6 20.1 83
GRASSY LAKE 7265 32.3 36.1 89 38.5 36.4 106
GROS VENTRE SUMMIT 8750 9.1 14.4 63 10.5 13.0 81
GUNSIGHT PASS 9820 12.5 -M * 14.3 -M *
LEWIS LAKE DIVIDE 7850 -M 35.8 * 35.2 37.2 95
PHILLIPS BENCH 8200 24.0 29.2 82 25.7 29.4 87
SALT RIVER SUMMIT 7760 9.6 14.6 66 11.6 19.0 61
SNAKE RIVER STATION 6920 15.7 19.2 82 25.0 22.5 111
SPRING CREEK DIVIDE 9000 22.8 26.9 85 22.5 26.8 84
THUMB DIVIDE 7980 17.2 19.2 90 18.7 19.1 98
TOGWOTEE PASS 9580 21.8 25.2 87 24.0 24.9 96
TWO OCEAN PLATEAU 9240 33.3 28.4 117 28.0 28.0 100
WILLOW CREEK 8380 24.2 30.6 79 31.8 32.6 98
YOUNTS PEAK 8350 16.0 17.3 92 15.8 16.3 97
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Basin wide percent of average 85 94
MADISON-GALLATIN
BLACK BEAR 8170 -M 39.8 * 41.6 40.9 102
CANYON 7870 12.4 13.9 89 14.8 15.6 95
MADISON PLATEAU 7750 25.6 25.5 100 30.6 27.1 113
WEST YELLOWSTONE 6700 9.7 12.8 76 17.3 13.2 131
WHISKEY CREEK 6800 16.2 17.4 93 22.8 21.2 108
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Basin wide percent of average 92 108
YELLOWSTONE
BEARTOOTH LAKE 9360 24.7 23.6 105 24.1 20.3 119
BURNT MTN 5880 .4 6.2 6 11.3 15.4 73
CANYON 7870 12.4 13.9 89 14.8 15.6 95
COLE CREEK 7850 13.5 16.4 82 11.2 16.7 67
EVENING STAR 9200 29.7 30.1 99 32.0 25.5 125
FISHER CREEK 9100 36.6 35.4 103 34.7 36.8 94
NORTHEAST ENTRANCE 7350 8.0 11.3 71 -M 12.8 *
PARKER PEAK 9400 23.9 21.9 109 23.1 16.4 141
SYLVAN LAKE 8420 18.3 22.8 80 24.8 21.1 118
THUMB DIVIDE 7980 17.2 19.2 90 18.7 19.1 98
TWO OCEAN PLATEAU 9240 33.3 28.4 117 28.0 28.0 100
WHITE MILL 8700 23.4 24.6 95 23.9 27.3 88
WOLVERINE 7650 9.0 11.6 78 13.3 12.9 103
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Basin wide percent of average 94 102
WIND RIVER
BURROUGHS CREEK 8750 13.8 14.8 93 14.4 16.4 88
CASTLE CREEK 8400 5.6 -M * 8.7 -M *
COLD SPRINGS 9630 5.4 9.0 60 9.3 10.7 87
DEER PARK 9700 10.7 17.1 63 17.2 22.1 78
HOBBS PARK 10100 12.9 15.1 85 13.0 12.9 101
KIRWIN 9550 11.9 11.5 103 14.1 11.3 125
LITTLE WARM 9370 7.9 12.0 66 11.4 13.5 84
OWL CREEK 8975 -M 5.6 * 5.7 5.9 97
SOUTH PASS 9040 12.8 16.7 77 13.3 18.6 72
ST. LAWRENCE ALT 8620 .2 7.4 3 7.4 8.9 83
TOGWOTEE PASS 9580 21.8 25.2 87 24.0 24.9 96
TOWNSEND CREEK 8700 6.5 8.8 74 11.1 11.7 95
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Basin wide percent of average 76 90
BIGHORN BASIN
BALD MTN. 9380 20.5 19.9 103 15.3 17.5 87
BEAR TRAP MEADOW 8200 4.9 5.2 94 8.8 8.3 106
BONE SPRINGS DIV 9350 18.8 16.4 115 15.4 14.7 105
GRAVE SPRINGS 8550 7.3 9.4 78 10.2 9.7 105
KIRWIN 9550 11.9 11.5 103 14.1 11.3 125
MARQUETTE 8760 7.9 -M * 11.7 9.8 119
MIDDLE POWDER 7760 9.4 11.8 80 10.6 12.4 85
OWL CREEK 8975 -M 5.6 * 5.7 5.9 97
POWDER RIVER PASS 9480 10.5 10.9 96 15.0 12.4 121
SHELL CREEK 9580 18.0 14.9 121 15.7 13.4 117
TIMBER CREEK 7950 .4 5.8 7 8.7 7.4 118
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Basin wide percent of average 96 107
SHOSHONE RIVER
BLACKWATER 9780 24.6 24.8 99 24.3 20.7 117
EVENING STAR 9200 29.7 30.1 99 32.0 25.5 125
MARQUETTE 8760 7.9 -M * 11.7 9.8 119
SYLVAN ROAD 7120 8.7 12.9 67 17.8 17.8 100
YOUNTS PEAK 8350 16.0 17.3 92 15.8 16.3 97
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Basin wide percent of average 93 113
POWDER RIVER
BEAR TRAP MEADOW 8200 4.9 5.2 94 8.8 8.3 106
CLOUD PEAK RESERVOIR 9860 13.4 13.5 99 15.0 12.9 116
GRAVE SPRINGS 8550 7.3 9.4 78 10.2 9.7 105
HANSEN SAWMILL 8360 1.2 6.5 18 8.4 8.2 102
MIDDLE POWDER 7760 9.4 11.8 80 10.6 12.4 85
POWDER RIVER PASS 9480 10.5 10.9 96 15.0 12.4 121
SOLDIER PARK 8720 8.9 -M * 9.8 -M *
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Basin wide percent of average 82 106
TONGUE RIVER
BIG GOOSE 7990 7.8 10.7 73 13.5 8.5 159
BONE SPRINGS DIV 9350 18.8 16.4 115 15.4 14.7 105
BURGESS JUNCTION 7880 11.2 11.7 96 13.8 12.2 113
DOME LAKE 8880 12.0 12.6 95 14.3 13.2 108
LITTLE GOOSE 8870 7.6 -M * 15.6 -M *
SUCKER CREEK 8880 11.4 11.8 97 14.7 13.6 108
TIE CREEK 6870 .1 6.1 2 13.3 9.9 134
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Basin wide percent of average 88 118
BELLE FOURCHE
COLE CANYON 5910 -M 6.9 * 8.2 6.7 122
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Basin wide percent of average * 122
CHEYENNE RIVER BASIN
BLIND PARK 6890 .3 8.7 3 10.3 11.1 93
NORTH RAPID CREEK 6130 .1 8.3 1 8.0 8.6 93
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Basin wide percent of average 2 93
UPPER N. PLATTE
ARAPAHO RIDGE 10960 14.9 22.9 65 16.6 26.9 62
BLACKHALL MTN 9820 21.0 -M * 23.2 -M *
COLUMBINE 9160 12.0 25.0 48 19.6 25.3 77
DIVIDE PEAK 8880 10.2 20.0 51 18.7 20.8 90
JOE WRIGHT 10120 11.6 21.5 54 18.4 24.9 74
LAPRELE CREEK 8375 6.2 11.0 56 11.6 12.6 92
NORTH FRENCH CREEK 10130 17.7 29.5 60 19.2 24.8 77
NEVER SUMMER 10280 11.3 20.4 55 10.9 23.6 46
OLD BATTLE 10000 22.7 32.4 70 26.8 34.8 77
RAWAH 9020 3.1 15.1 21 10.9 16.5 66
SAGE CREEK BASIN 7850 3.5 11.6 30 10.1 12.1 83
SAND LAKE 10050 22.9 32.7 70 22.8 24.2 94
SOUTH BRUSH CREEK 8440 -M 13.2 * 11.6 16.4 71
TOWER 10500 28.1 45.8 61 30.6 38.6 79
WEBBER SPRINGS 9250 14.2 26.4 54 20.9 26.8 78
WILLOW CREEK PASS 9540 -M 12.1 * 9.2 12.9 71
ZIRKEL 9340 17.3 25.8 67 24.2 26.1 93
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Basin wide percent of average 58 77
SWEETWATER
DEER PARK 9700 10.7 17.1 63 17.2 22.1 78
LARSEN CREEK 9000 9.6 -M * 13.8 -M *
SOUTH PASS 9040 12.8 16.7 77 13.3 18.6 72
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Basin wide percent of average 70 75
LOWER N. PLATTE
CASPER MTN. 7900 15.8 14.6 108 17.4 14.4 121
LAPRELE CREEK 8375 6.2 11.0 56 11.6 12.6 92
RENO HILL 8400 13.6 14.3 95 17.2 15.0 115
WINDY PEAK 7900 4.4 8.1 54 8.6 10.6 81
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Basin wide percent of average 83 104
LARAMIE RIVER
BROOKLYN LAKE 10240 15.6 23.9 65 18.7 22.1 85
CINNABAR PARK 9574 12.7 17.9 71 19.2 20.1 96
CROW CREEK 8330 2.7 9.0 30 10.1 10.0 101
DEADMAN HILL 10220 15.4 16.4 94 15.0 17.0 88
RAWAH 9020 3.1 15.1 21 10.9 16.5 66
ROACH 9700 11.5 17.2 67 15.8 18.7 84
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Basin wide percent of average 61 86
S. PLATTE
BLACK MOUNTAIN 8920 8.9 -M * 12.2 -M *
CROW CREEK 8330 2.7 9.0 30 10.1 10.0 101
DEADMAN HILL 10220 15.4 16.4 94 15.0 17.0 88
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Basin wide percent of average 71 93
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.1 11.0 28 11.8 15.9 74
DIVIDE PEAK 8880 10.2 20.0 51 18.7 20.8 90
ELK RIVER 8700 7.8 19.6 40 15.4 19.7 78
LITTLE SNAKE RIVER 8915 13.8 -M * 24.0 -M *
OLD BATTLE 10000 22.7 32.4 70 26.8 34.8 77
SAGE CREEK BASIN 7850 3.5 11.6 30 10.1 12.1 83
SANDSTONE RS 8150 4.9 14.8 33 11.9 18.8 63
WHISKEY PARK 8950 16.8 30.4 55 23.7 28.8 82
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Basin wide percent of average 49 78
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.5 14.7 92 13.6 13.5 101
BLIND BULL SUM 8650 22.4 28.3 79 17.3 22.5 77
EAST RIM DIVIDE 7930 9.2 13.3 69 11.5 12.2 94
ELKHART PARK G.S. 9400 13.9 13.6 102 15.1 13.4 113
GROS VENTRE SUMMIT 8750 9.1 14.4 63 10.5 13.0 81
GUNSIGHT PASS 9820 12.5 -M * 14.3 -M *
KENDALL R.S. 7740 12.5 14.6 86 14.9 14.7 101
LOOMIS PARK 8240 12.6 17.5 72 16.5 17.6 94
NEW FORK LAKE 8340 10.0 11.3 88 10.6 11.4 93
POCKET CREEK 9360 10.1 -M * 12.4 -M *
SNIDER BASIN 8060 11.8 14.7 80 13.1 16.3 80
SPRING CREEK DIVIDE 9000 22.8 26.9 85 22.5 26.8 84
TRIPLE PEAK 8500 20.2 25.2 80 25.0 25.1 100
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Basin wide percent of average 81 91
LOWER GREEN RIVER
BLACKS FORK JCT 8870 2.0 -M * 10.7 -M *
BUCK PASTURE 9700 .1 -M * 3.8 -M *
EF BLACKS FORK GS 9308 5.4 -M * 9.2 -M *
HAMS FORK 7840 7.2 12.0 60 9.7 12.3 79
HEWINTA 9519 6.0 12.1 50 12.5 14.7 85
HICKERSON PARK 9145 4.4 7.7 57 12.3 8.0 154
HOLE-IN-ROCK 9150 5.3 7.2 74 12.1 7.5 161
INDIAN CREEK 9425 20.1 28.2 71 17.9 25.7 70
KELLEY R.S. 8180 12.7 17.1 74 15.3 20.6 74
SPIRIT LK 10223 10.1 -M * 17.6 -M *
STEEL CREEK PARK 10200 9.7 15.9 61 14.3 16.3 88
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Basin wide percent of average 65 90
UPPER BEAR RIVER
BEAR RIVER RS 8500 1.0 -M * 10.1 -M *
BUG LAKE 7950 14.1 21.2 67 15.7 19.5 81
BURTS MILLER RANCH 8000 .4 -M * 9.7 -M *
CHALK CREEK #1 8993 14.1 24.9 57 18.5 25.4 73
HAYDEN FORK 9212 6.9 16.6 42 17.4 21.2 82
KELLEY R.S. 8180 12.7 17.1 74 15.3 20.6 74
LILY LAKE 9156 7.6 13.5 56 12.0 17.6 68
MONTE CRISTO 8960 16.7 30.1 55 18.8 25.7 73
SALT RIVER SUMMIT 7760 9.6 14.6 66 11.6 19.0 61
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Basin wide percent of average 59 73
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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 1971-2000.
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.