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: MARCH 8 , 2003
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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 18.7 16.6 113 19.3 19.3 100
COTTONWOOD CREEK 7600 20.3 19.9 102 21.5 24.1 89
GRANITE CREEK 6770 13.7 17.0 81 15.0 18.0 83
GRASSY LAKE 7265 27.2 31.1 87 28.0 32.2 87
GROS VENTRE SUMMIT 8775 10.5 12.2 86 9.7 11.3 86
LEWIS LAKE DIVIDE 7860 29.7 31.2 95 26.2 32.8 80
PHILLIPS BENCH 8200 -M 25.2 * -M 25.7 *
SALT RIVER SUMMIT 7600 11.2 12.8 87 12.9 16.5 78
SNAKE RIVER STATION 6920 15.9 17.5 91 18.9 20.2 94
SPRING CREEK DIVIDE 9000 22.4 23.3 96 20.7 23.5 88
THUMB DIVIDE 7980 12.7 16.4 77 13.2 16.7 79
TOGWOTEE PASS 9580 21.0 21.7 97 21.0 21.6 97
TWO OCEAN PLATEAU 9360 26.2 24.5 107 20.8 24.4 85
WILLOW CREEK 8450 24.5 26.7 92 28.7 28.3 101
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Basin wide percent of average 94 89
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 21.8 20.8 105 18.9 17.8 106
BLACK BEAR 8170 28.3 34.6 82 24.4 35.0 70
CANYON 8090 11.9 12.0 99 12.1 13.6 89
FISHER CREEK 9100 30.3 30.9 98 -M 32.0 *
MADISON PLATEAU 7750 15.9 22.0 72 16.4 23.2 71
NORTHEAST ENTRANCE 7350 10.0 10.1 99 11.4 11.3 101
PARKER PEAK 9400 20.4 19.0 107 16.8 14.3 117
SYLVAN LAKE 8420 18.0 19.7 91 20.1 18.6 108
THUMB DIVIDE 7980 12.7 16.4 77 13.2 16.7 79
TWO OCEAN PLATEAU 9360 26.2 24.5 107 20.8 24.4 85
WHISKEY CREEK 6800 10.7 15.2 70 12.6 18.3 69
WHITE MILL 8700 22.5 21.3 106 19.3 23.7 81
WOLVERINE 7650 11.7 10.9 107 10.8 11.6 93
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Basin wide percent of average 93 86
WIND RIVER
BURROUGHS CREEK 8750 15.6 13.1 119 16.5 14.3 115
COLD SPRINGS 9630 7.5 7.6 99 8.6 8.9 97
DEER PARK 9700 11.8 14.9 79 14.0 18.8 74
HOBBS PARK 10100 10.9 12.5 87 9.7 10.6 92
LITTLE WARM 9370 8.9 10.1 88 9.8 11.5 85
SOUTH PASS 9040 11.4 14.7 78 11.8 15.8 75
ST. LAWRENCE ALT 8620 5.9 6.2 95 6.9 7.4 93
TOGWOTEE PASS 9580 21.0 21.7 97 21.0 21.6 97
TOWNSEND CREEK 8700 7.6 7.2 106 9.0 9.5 95
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Basin wide percent of average 93 91
BIGHORN BASIN
BALD MTN. 9380 16.8 16.8 100 15.0 14.9 101
BEAR TRAP MEADOW 8200 4.9 4.6 107 5.0 6.8 74
BLACKWATER 9780 20.3 21.4 95 17.7 18.0 98
BONE SPRINGS DIV 9350 13.8 13.8 100 12.8 12.3 104
EVENING STAR 9200 24.7 26.1 95 26.0 22.6 115
GRAVE SPRINGS 8550 4.3 7.8 55 5.0 8.2 61
KIRWIN 9550 9.2 9.6 96 9.6 9.7 99
MARQUETTE 8760 8.3 7.2 115 9.1 8.0 114
MIDDLE POWDER 7760 5.4 9.6 56 5.3 10.2 52
OWL CREEK 8975 6.0 4.4 136 5.4 4.7 115
POWDER RIVER PASS 9480 9.4 9.2 102 10.3 10.5 98
SHELL CREEK 9580 13.4 12.4 108 12.2 11.4 107
SYLVAN LAKE 8420 18.0 19.7 91 20.1 18.6 108
SYLVAN ROAD 7120 12.8 11.8 108 15.5 16.1 96
TIMBER CREEK 7950 4.6 4.6 100 5.6 5.9 95
YOUNTS PEAK 8350 14.3 15.1 95 13.8 14.2 97
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Basin wide percent of average 96 98
SHOSHONE RIVER
BLACKWATER 9780 20.3 21.4 95 17.7 18.0 98
EVENING STAR 9200 24.7 26.1 95 26.0 22.6 115
KIRWIN 9550 9.2 9.6 96 9.6 9.7 99
MARQUETTE 8760 8.3 7.2 115 9.1 8.0 114
SYLVAN LAKE 8420 18.0 19.7 91 20.1 18.6 108
SYLVAN ROAD 7120 12.8 11.8 108 15.5 16.1 96
YOUNTS PEAK 8350 14.3 15.1 95 13.8 14.2 97
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Basin wide percent of average 97 104
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.9 4.6 107 5.0 6.8 74
BIG GOOSE 7990 8.0 8.2 98 8.7 7.2 121
BONE SPRINGS DIV 9350 13.8 13.8 100 12.8 12.3 104
BURGESS JUNCTION 7880 -M 9.5 * -M 10.1 *
CLOUD PEAK RESERVOIR 9860 11.4 10.7 107 9.1 10.5 87
DOME LAKE 8880 9.9 10.0 99 10.1 10.9 93
GRAVE SPRINGS 8550 4.3 7.8 55 5.0 8.2 61
HANSEN SAWMILL 8360 7.0 5.5 127 7.4 6.7 110
MIDDLE POWDER 7760 5.4 9.6 56 5.3 10.2 52
POWDER RIVER PASS 9480 9.4 9.2 102 10.3 10.5 98
SUCKER CREEK 8880 10.4 9.6 108 11.3 11.2 101
TIE CREEK 6870 5.5 5.3 104 9.1 8.4 108
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Basin wide percent of average 95 91
BELLE FOURCHE
BLIND PARK 6890 7.9 7.7 103 9.3 9.7 96
COLE CANYON 5910 5.0 -M * 5.9 -M *
NORTH RAPID CREEK 6130 6.3 7.2 88 6.5 7.7 84
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Basin wide percent of average 95 91
UPPER N. PLATTE RIVER
COLUMBINE 9400 20.5 22.9 90 18.9 21.9 86
DIVIDE PEAK 8800 15.4 16.6 93 16.0 17.9 89
ELK RIVER 8700 15.5 16.9 92 16.1 16.9 95
JOE WRIGHT 10120 17.2 18.1 95 21.2 21.3 100
NORTH FRENCH CREEK 10100 24.4 24.1 101 24.0 21.2 113
OLD BATTLE 10000 23.1 27.8 83 27.0 29.9 90
SAGE CREEK BASIN 7850 9.1 9.7 94 10.9 10.4 105
SOUTH BRUSH CREEK 8400 12.0 10.8 111 14.0 14.0 100
TOWER 10500 37.2 39.4 94 30.0 33.4 90
WEBBER SPRINGS 9200 17.3 22.8 76 19.5 23.2 84
WILLOW CREEK PASS 9540 12.2 10.1 121 11.7 11.0 106
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Basin wide percent of average 93 95
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.4 20.0 72 16.4 18.5 89
CASPER MTN. 7900 8.3 11.9 70 7.2 11.8 61
DEADMAN HILL 10220 8.5 13.7 62 11.2 14.1 79
DEER PARK 9700 11.8 14.9 79 14.0 18.8 74
LAPRELE CREEK 8320 6.0 9.4 64 -M 10.6 *
RENO HILL 8400 8.2 11.2 73 8.4 12.3 68
ROACH 9700 11.6 14.6 79 13.2 15.8 84
SAND LAKE 10080 18.7 26.9 70 19.0 20.4 93
SOUTH PASS 9040 11.4 14.7 78 11.8 15.8 75
WINDY PEAK 7840 6.0 6.6 91 6.7 9.0 74
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Basin wide percent of average 73 79
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.1 10.4 126 13.8 13.1 105
DIVIDE PEAK 8800 15.4 16.6 93 16.0 17.9 89
OLD BATTLE 10000 23.1 27.8 83 27.0 29.9 90
SANDSTONE RS 8150 11.8 13.3 89 16.2 16.4 99
WHISKEY PARK 8950 23.8 25.6 93 23.4 24.6 95
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Basin wide percent of average 93 95
UPPER GREEN RIVER
BIG SANDY OPENING 9100 10.3 12.7 81 9.5 11.8 81
BLIND BULL SUM 8650 19.1 24.4 78 14.5 19.9 73
EAST RIM DIVIDE 7930 9.0 11.6 78 9.1 10.7 85
ELKHART PARK G.S. 9400 -M 11.7 * -M 11.5 *
GROS VENTRE SUMMIT 8775 10.5 12.2 86 9.7 11.3 86
KENDALL R.S. 7740 11.8 13.2 89 11.4 13.0 88
LOOMIS PARK 8240 15.8 15.3 103 14.1 15.4 92
NEW FORK LAKE 8340 9.4 10.1 93 -M 10.0 *
SNIDER BASIN 8250 11.9 13.0 92 11.7 14.3 82
SPRING CREEK DIVIDE 9000 22.4 23.3 96 20.7 23.5 88
TRIPLE PEAK 8500 20.8 22.0 95 22.5 21.7 104
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Basin wide percent of average 89 87
LOWER GREEN RIVER
HAMS FORK 7840 10.8 11.6 93 9.5 10.8 88
HEWINTA 9500 7.6 9.8 78 9.3 12.3 76
HICKERSON PARK 9150 4.0 6.2 65 6.2 6.6 94
HOLE-IN-ROCK 9150 5.7 6.1 93 6.7 6.2 108
INDIAN CREEK 9425 20.0 23.7 84 17.1 22.1 77
KELLEY R.S. 8180 12.2 14.8 82 12.9 18.0 72
STEEL CREEK PARK 10100 9.5 13.4 71 10.1 13.7 74
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Basin wide percent of average 82 80
UPPER BEAR RIVER
BUG LAKE 7950 13.9 18.1 77 13.3 16.9 79
HAYDEN FORK 9400 12.8 14.1 91 14.7 18.0 82
KELLEY R.S. 8180 12.2 14.8 82 12.9 18.0 72
LILY LAKE 9050 9.8 11.4 86 11.3 15.0 75
MONTE CRISTO 8960 14.2 26.1 54 17.1 22.1 77
SALT RIVER SUMMIT 7600 11.2 12.8 87 12.9 16.5 78
TRIAL LAKE 9960 11.4 21.8 52 13.2 21.6 61
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Basin wide percent of average 72 74
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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.