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 4 , 2010
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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 9.5 18.1 52 12.2 21.9 56
COTTONWOOD CREEK 7670 15.6 24.3 64 19.8 28.0 71
GRAND TARGHEE 9260 36.5 -M * 27.2 -M *
GRANITE CREEK 6770 9.3 18.5 50 11.5 20.3 57
GRASSY LAKE 7265 -M 36.4 * -M 36.7 *
GROS VENTRE SUMMIT 8750 7.7 14.5 53 7.3 13.2 55
GUNSIGHT PASS 9820 7.8 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 18.2 36.1 50 20.0 37.5 53
PHILLIPS BENCH 8200 17.3 29.5 59 18.7 29.6 63
SALT RIVER SUMMIT 7760 9.7 14.8 66 11.3 19.2 59
SNAKE RIVER STATION 6920 7.5 19.1 39 15.7 22.7 69
SPRING CREEK DIVIDE 9000 17.2 27.2 63 16.4 27.0 61
THUMB DIVIDE 7980 9.9 19.3 51 12.3 19.3 64
TOGWOTEE PASS 9580 18.0 25.4 71 17.9 25.2 71
TWO OCEAN PLATEAU 9240 20.3 28.7 71 16.6 28.3 59
WILLOW CREEK 8380 21.3 30.9 69 25.0 32.9 76
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Basin wide percent of average 59 63
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 13.8 23.8 58 12.7 20.5 62
BLACK BEAR 8170 25.0 40.0 63 24.3 41.3 59
CANYON 7870 8.7 13.9 63 10.3 15.8 65
FISHER CREEK 9100 23.3 35.6 65 22.0 37.1 59
MADISON PLATEAU 7750 15.5 25.6 61 18.8 27.4 69
NORTHEAST ENTRANCE 7350 5.6 11.3 50 8.6 12.9 67
PARKER PEAK 9400 18.1 22.0 82 12.3 16.6 74
SYLVAN LAKE 8420 13.6 23.1 59 16.4 21.3 77
THUMB DIVIDE 7980 9.9 19.3 51 12.3 19.3 64
TWO OCEAN PLATEAU 9240 20.3 28.7 71 16.6 28.3 59
WHISKEY CREEK 6800 9.7 17.5 55 11.8 21.4 55
WHITE MILL 8700 16.2 24.8 65 15.1 27.6 55
WOLVERINE 7650 7.4 11.7 63 6.9 13.0 53
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Basin wide percent of average 63 62
WIND RIVER
BURROUGHS CREEK 8750 -M 14.9 * 6.6 16.6 40
COLD SPRINGS 9630 7.1 9.0 79 8.7 10.9 80
DEER PARK 9700 15.2 17.4 87 17.0 22.4 76
HOBBS PARK 10100 15.5 15.5 100 14.7 13.1 112
LITTLE WARM 9370 7.5 12.2 61 7.9 13.7 58
SOUTH PASS 9040 13.8 17.0 81 14.8 18.8 79
ST. LAWRENCE ALT 8620 7.8 7.5 104 9.8 9.1 108
TOGWOTEE PASS 9580 18.0 25.4 71 17.9 25.2 71
TOWNSEND CREEK 8700 11.4 9.2 124 13.4 11.9 113
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Basin wide percent of average 85 78
BIGHORN BASIN
BALD MTN. 9380 13.7 20.1 68 10.9 17.7 62
BEAR TRAP MEADOW 8200 7.3 5.2 140 7.9 8.4 94
BLACKWATER 9780 16.6 25.1 66 15.1 21.0 72
BONE SPRINGS DIV 9350 11.9 16.6 72 9.7 14.9 65
EVENING STAR 9200 19.2 30.3 63 20.2 25.8 78
GRAVE SPRINGS 8550 9.4 9.6 98 10.3 9.9 104
KIRWIN 9550 8.9 11.6 77 8.5 11.5 74
MARQUETTE 8760 7.1 9.3 76 7.9 10.0 79
MIDDLE POWDER 7760 11.1 12.2 91 8.6 12.6 68
OWL CREEK 8975 6.2 5.7 109 4.9 6.0 82
POWDER RIVER PASS 9480 9.3 11.1 84 10.5 12.6 83
SHELL CREEK 9580 11.4 15.1 75 10.3 13.6 76
SYLVAN LAKE 8420 13.6 23.1 59 16.4 21.3 77
SYLVAN ROAD 7120 7.3 12.9 57 11.8 18.0 66
TIMBER CREEK 7950 4.5 5.9 76 6.0 7.5 80
YOUNTS PEAK 8350 10.3 17.5 59 8.6 16.5 52
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Basin wide percent of average 73 74
SHOSHONE RIVER
BLACKWATER 9780 16.6 25.1 66 15.1 21.0 72
EVENING STAR 9200 19.2 30.3 63 20.2 25.8 78
KIRWIN 9550 8.9 11.6 77 8.5 11.5 74
MARQUETTE 8760 7.1 9.3 76 7.9 10.0 79
SYLVAN LAKE 8420 13.6 23.1 59 16.4 21.3 77
SYLVAN ROAD 7120 7.3 12.9 57 11.8 18.0 66
YOUNTS PEAK 8350 10.3 17.5 59 8.6 16.5 52
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Basin wide percent of average 64 71
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.3 5.2 140 7.9 8.4 94
BIG GOOSE 7990 8.6 11.0 78 9.8 8.8 111
BONE SPRINGS DIV 9350 11.9 16.6 72 9.7 14.9 65
BURGESS JUNCTION 7880 10.6 11.9 89 9.9 12.4 80
CLOUD PEAK RESERVOIR 9860 12.0 13.8 87 9.8 13.1 75
DOME LAKE 8880 8.8 12.8 69 10.9 13.4 81
GRAVE SPRINGS 8550 9.4 9.6 98 10.3 9.9 104
HANSEN SAWMILL 8360 5.7 6.5 88 6.6 8.4 79
MIDDLE POWDER 7760 11.1 12.2 91 8.6 12.6 68
POWDER RIVER PASS 9480 9.3 11.1 84 10.5 12.6 83
SUCKER CREEK 8880 12.1 12.1 100 12.5 13.8 91
TIE CREEK 6870 3.2 6.2 52 9.2 10.1 91
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Basin wide percent of average 85 84
BELLE FOURCHE
BLIND PARK 6890 6.1 8.6 71 11.7 11.2 104
COLE CANYON 5910 6.5 6.9 94 9.8 6.8 144
NORTH RAPID CREEK 6130 8.2 8.4 98 10.5 8.7 121
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Basin wide percent of average 87 120
UPPER N. PLATTE RIVER
COLUMBINE 9160 19.5 25.1 78 20.9 25.6 82
DIVIDE PEAK 8880 21.8 20.2 108 22.7 21.1 108
ELK RIVER 8700 18.9 19.8 95 19.5 19.9 98
JOE WRIGHT 10120 18.3 21.8 84 20.6 25.2 82
NORTH FRENCH CREEK 10130 35.8 30.0 119 33.7 25.0 135
OLD BATTLE 10000 32.5 32.8 99 34.6 35.1 99
SAGE CREEK BASIN 7850 16.4 11.7 140 11.8 12.2 97
SOUTH BRUSH CREEK 8440 14.3 13.3 108 18.1 16.7 108
TOWER 10500 35.4 46.4 76 31.2 39.0 80
WEBBER SPRINGS 9250 23.6 26.4 89 26.8 27.1 99
WILLOW CREEK PASS 9540 8.1 12.3 66 10.4 13.0 80
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Basin wide percent of average 94 96
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.1 24.3 87 22.2 22.5 99
CASPER MTN. 7900 15.8 14.9 106 14.7 14.7 100
DEADMAN HILL 10220 19.3 16.7 116 17.1 17.2 99
DEER PARK 9700 15.2 17.4 87 17.0 22.4 76
LAPRELE CREEK 8375 10.2 11.0 93 12.9 12.8 101
RENO HILL 8400 16.8 14.6 115 17.5 15.3 114
ROACH 9700 17.1 17.4 98 20.0 18.9 106
SAND LAKE 10050 31.1 33.1 94 30.2 24.5 123
SOUTH PASS 9040 13.8 17.0 81 14.8 18.8 79
WINDY PEAK 7900 9.2 8.3 111 11.1 10.7 104
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Basin wide percent of average 97 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.5 10.8 97 13.2 16.1 82
DIVIDE PEAK 8880 21.8 20.2 108 22.7 21.1 108
OLD BATTLE 10000 32.5 32.8 99 34.6 35.1 99
SANDSTONE RS 8150 13.1 14.7 89 16.1 19.0 85
WHISKEY PARK 8950 27.5 30.5 90 28.9 29.1 99
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Basin wide percent of average 97 96
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.5 14.8 57 8.4 13.6 62
BLIND BULL SUM 8650 15.2 28.5 53 11.4 22.7 50
EAST RIM DIVIDE 7930 5.2 13.4 39 6.4 12.3 52
ELKHART PARK G.S. 9400 8.2 13.7 60 8.6 13.6 63
GROS VENTRE SUMMIT 8750 7.7 14.5 53 7.3 13.2 55
GUNSIGHT PASS 9820 7.8 -M * 9.1 -M *
KENDALL R.S. 7740 5.7 14.5 39 7.6 14.8 51
LOOMIS PARK 8240 7.6 17.5 43 9.5 17.8 53
NEW FORK LAKE 8340 5.6 11.4 49 5.6 11.5 49
POCKET CREEK 9360 7.6 -M * 10.5 -M *
SNIDER BASIN 8060 9.1 14.8 61 10.0 16.5 61
SPRING CREEK DIVIDE 9000 17.2 27.2 63 16.4 27.0 61
TRIPLE PEAK 8500 17.2 25.4 68 18.1 25.3 72
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Basin wide percent of average 55 58
LOWER GREEN RIVER
HAMS FORK 7840 8.0 11.8 68 9.0 12.5 72
HEWINTA 9519 10.0 12.3 81 11.5 14.9 77
HICKERSON PARK 9145 8.0 7.9 101 10.8 8.1 133
HOLE-IN-ROCK 9150 7.9 7.3 108 9.9 7.6 130
INDIAN CREEK 9425 18.1 28.5 64 15.6 26.0 60
KELLEY R.S. 8180 10.4 17.2 60 12.3 20.8 59
STEEL CREEK PARK 10200 12.5 16.1 78 14.4 16.6 87
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Basin wide percent of average 74 78
UPPER BEAR RIVER
BUG LAKE 7950 9.4 21.4 44 13.7 19.6 70
HAYDEN FORK 9212 12.1 16.7 72 16.2 21.4 76
KELLEY R.S. 8180 10.4 17.2 60 12.3 20.8 59
LILY LAKE 9156 11.7 13.9 84 13.1 17.9 73
MONTE CRISTO 8960 18.2 30.2 60 17.5 26.0 67
SALT RIVER SUMMIT 7760 9.7 14.8 66 11.3 19.2 59
TRIAL LAKE 9992 15.7 25.5 62 13.8 25.5 54
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Basin wide percent of average 62 65
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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.