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 THURSDAY: APRIL 26 , 2007
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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 4.9 13.7 36 20.9 23.9 87
COTTONWOOD CREEK 7600 16.1 21.1 76 24.9 31.2 80
GRANITE CREEK 6770 5.9 14.1 42 16.5 22.0 75
GRASSY LAKE 7265 23.6 34.5 68 36.2 40.1 90
GROS VENTRE SUMMIT 8750 10.8 13.7 79 13.2 14.9 89
LEWIS LAKE DIVIDE 7850 22.1 35.3 63 32.2 40.9 79
PHILLIPS BENCH 8200 18.0 29.8 60 24.7 32.5 76
SALT RIVER SUMMIT 7600 7.5 11.8 64 15.8 21.2 75
SNAKE RIVER STATION 6920 3.6 13.9 26 23.3 25.0 93
SPRING CREEK DIVIDE 9000 22.3 28.6 78 22.4 29.6 76
THUMB DIVIDE 7980 8.6 16.1 53 17.0 21.5 79
TOGWOTEE PASS 9580 19.6 27.5 71 22.8 28.3 81
TWO OCEAN PLATEAU 9240 27.9 31.4 89 25.0 31.4 80
WILLOW CREEK 8450 21.5 31.0 69 33.1 36.9 90
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Basin wide percent of average 66 82
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 22.1 25.8 86 21.5 23.0 93
BLACK BEAR 8170 31.8 40.2 79 36.9 45.0 82
CANYON 8090 11.9 12.1 98 17.3 17.3 100
FISHER CREEK 9100 33.4 37.5 89 33.3 41.0 81
MADISON PLATEAU 7750 17.8 24.8 72 24.2 29.8 81
NORTHEAST ENTRANCE 7350 .0 8.2 0 14.7 14.5 101
PARKER PEAK 9400 22.2 24.2 92 20.7 19.0 109
SYLVAN LAKE 8420 15.8 23.9 66 24.5 24.1 102
THUMB DIVIDE 7980 8.6 16.1 53 17.0 21.5 79
TWO OCEAN PLATEAU 9240 27.9 31.4 89 25.0 31.4 80
WHISKEY CREEK 6800 10.2 16.0 64 19.1 23.7 81
WHITE MILL 8700 21.5 26.3 82 22.5 30.6 74
WOLVERINE 7650 .0 8.4 0 12.8 14.8 86
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Basin wide percent of average 76 86
WIND RIVER
BURROUGHS CREEK 8750 12.9 14.1 91 15.1 18.8 80
COLD SPRINGS 9630 .7 5.5 13 10.1 13.4 75
DEER PARK 9700 13.2 18.1 73 17.7 26.2 68
HOBBS PARK 10100 14.0 17.6 80 14.5 16.2 90
LITTLE WARM 9370 8.7 11.5 76 11.7 16.2 72
SOUTH PASS 9040 12.0 17.9 67 15.2 22.0 69
ST. LAWRENCE ALT 8620 2.4 6.5 37 10.2 11.6 88
TOGWOTEE PASS 9580 19.6 27.5 71 22.8 28.3 81
TOWNSEND CREEK 8700 6.4 9.3 69 12.1 14.9 81
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Basin wide percent of average 70 77
BIGHORN BASIN
BALD MTN. 9380 22.5 23.1 97 17.7 20.7 86
BEAR TRAP MEADOW 8200 4.2 3.2 131 11.5 10.5 110
BLACKWATER 9780 23.1 28.2 82 22.1 24.0 92
BONE SPRINGS DIV 9350 19.5 18.1 108 18.7 17.7 106
EVENING STAR 9200 23.3 32.9 71 29.6 29.2 101
GRAVE SPRINGS 8550 7.9 11.0 72 9.3 12.5 74
KIRWIN 9550 12.0 12.8 94 14.1 13.7 103
MARQUETTE 8760 4.8 11.1 43 12.2 13.0 94
MIDDLE POWDER 7760 12.7 14.2 89 11.1 15.2 73
OWL CREEK 8975 .8 4.4 18 8.3 7.8 106
POWDER RIVER PASS 9480 10.3 11.1 93 14.3 15.2 94
SHELL CREEK 9580 17.6 16.6 106 14.6 16.2 90
SYLVAN LAKE 8420 15.8 23.9 66 24.5 24.1 102
SYLVAN ROAD 7120 3.0 9.3 32 17.7 20.1 88
TIMBER CREEK 7950 3.6 5.1 71 10.2 10.0 102
YOUNTS PEAK 8350 11.4 18.1 63 15.2 18.4 83
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Basin wide percent of average 79 94
SHOSHONE RIVER
BLACKWATER 9780 23.1 28.2 82 22.1 24.0 92
EVENING STAR 9200 23.3 32.9 71 29.6 29.2 101
KIRWIN 9550 12.0 12.8 94 14.1 13.7 103
MARQUETTE 8760 4.8 11.1 43 12.2 13.0 94
SYLVAN LAKE 8420 15.8 23.9 66 24.5 24.1 102
SYLVAN ROAD 7120 3.0 9.3 32 17.7 20.1 88
YOUNTS PEAK 8350 11.4 18.1 63 15.2 18.4 83
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Basin wide percent of average 69 95
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.2 3.2 131 11.5 10.5 110
BIG GOOSE 7990 9.8 11.8 83 13.4 12.2 110
BONE SPRINGS DIV 9350 19.5 18.1 108 18.7 17.7 106
BURGESS JUNCTION 7880 13.4 13.3 101 15.3 14.9 103
CLOUD PEAK RESERVOIR 9860 16.4 15.9 103 15.4 16.4 94
DOME LAKE 8880 13.3 13.7 97 16.6 16.2 102
GRAVE SPRINGS 8550 7.9 11.0 72 9.3 12.5 74
HANSEN SAWMILL 8360 4.6 5.3 87 10.9 10.5 104
MIDDLE POWDER 7760 12.7 14.2 89 11.1 15.2 73
POWDER RIVER PASS 9480 10.3 11.1 93 14.3 15.2 94
SUCKER CREEK 8880 14.9 13.2 113 17.9 16.8 107
TIE CREEK 6870 1.3 4.3 30 13.3 12.9 103
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Basin wide percent of average 95 98
BELLE FOURCHE
BLIND PARK 6890 .0 5.1 0 11.2 13.7 82
COLE CANYON 5910 .0 5.5 0 10.4 -M *
NORTH RAPID CREEK 6130 .0 5.4 0 9.9 10.9 91
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Basin wide percent of average 0 86
UPPER N. PLATTE RIVER
COLUMBINE 9160 10.2 22.1 46 23.4 28.6 82
DIVIDE PEAK 8860 15.8 19.8 80 21.5 23.7 91
ELK RIVER 8700 7.3 16.4 45 19.6 22.4 88
JOE WRIGHT 10120 23.8 24.6 97 26.2 29.2 90
NORTH FRENCH CREEK 10130 27.7 33.9 82 27.4 28.9 95
OLD BATTLE 9920 26.6 36.2 73 30.8 39.0 79
SAGE CREEK BASIN 7850 .1 11.5 1 13.7 13.8 99
SOUTH BRUSH CREEK 8440 4.6 11.8 39 15.9 19.5 82
TOWER 10500 33.0 51.4 64 35.9 44.0 82
WEBBER SPRINGS 9250 16.1 25.4 63 25.3 30.4 83
WILLOW CREEK PASS 9540 16.8 14.0 120 15.2 15.2 100
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Basin wide percent of average 68 86
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 22.3 27.7 81 22.9 26.2 87
CASPER MTN. 7850 10.9 17.0 64 14.4 18.6 77
DEADMAN HILL 10220 15.3 19.3 79 20.6 20.3 101
DEER PARK 9700 13.2 18.1 73 17.7 26.2 68
LAPRELE CREEK 8375 4.6 8.1 57 12.5 15.8 79
RENO HILL 8500 13.5 15.1 89 17.9 19.3 93
ROACH 9700 19.7 18.5 106 22.7 21.8 104
SAND LAKE 10050 29.1 36.4 80 28.6 28.4 101
SOUTH PASS 9040 12.0 17.9 67 15.2 22.0 69
WINDY PEAK 7900 4.6 5.9 78 12.4 13.0 95
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Basin wide percent of average 79 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 5.9 0 14.2 18.2 78
DIVIDE PEAK 8860 15.8 19.8 80 21.5 23.7 91
OLD BATTLE 9920 26.6 36.2 73 30.8 39.0 79
SANDSTONE RS 8150 1.5 10.7 14 16.6 21.4 78
WHISKEY PARK 8950 19.3 30.6 63 26.2 33.0 79
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Basin wide percent of average 61 81
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.7 14.1 69 11.9 15.5 77
BLIND BULL SUM 8900 24.3 28.2 86 19.0 24.8 77
EAST RIM DIVIDE 7930 .2 13.4 1 10.4 13.6 76
ELKHART PARK G.S. 9400 11.5 13.2 87 13.8 15.6 88
GROS VENTRE SUMMIT 8750 10.8 13.7 79 13.2 14.9 89
KENDALL R.S. 7740 3.2 11.1 29 13.4 16.3 82
LOOMIS PARK 8240 -M 15.2 * -M 19.5 *
NEW FORK LAKE 8340 6.3 9.3 68 10.1 13.1 77
SNIDER BASIN 8060 9.2 13.3 69 13.2 18.1 73
SPRING CREEK DIVIDE 9000 22.3 28.6 78 22.4 29.6 76
TRIPLE PEAK 8500 18.6 24.4 76 25.5 28.0 91
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Basin wide percent of average 69 81
LOWER GREEN RIVER
HAMS FORK 7840 .1 7.2 1 11.2 14.3 78
HEWINTA 9500 .0 10.2 0 14.0 17.3 81
HICKERSON PARK 9100 3.3 6.5 51 12.0 9.8 122
HOLE-IN-ROCK 9150 3.1 5.5 56 10.8 9.3 116
INDIAN CREEK 9425 19.1 28.7 67 19.7 28.9 68
KELLEY R.S. 8180 10.8 15.1 72 17.2 23.1 74
STEEL CREEK PARK 10100 14.6 18.2 80 15.0 19.6 77
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Basin wide percent of average 56 82
UPPER BEAR RIVER
BUG LAKE 7950 11.3 19.2 59 16.4 21.9 75
HAYDEN FORK 9100 .0 14.1 0 20.9 24.4 86
KELLEY R.S. 8180 10.8 15.1 72 17.2 23.1 74
LILY LAKE 9050 5.6 12.2 46 15.7 20.5 77
MONTE CRISTO 8960 17.4 29.0 60 23.6 29.5 80
SALT RIVER SUMMIT 7600 7.5 11.8 64 15.8 21.2 75
TRIAL LAKE 9960 15.5 26.5 58 22.1 28.7 77
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Basin wide percent of average 53 78
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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.