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United States Natural Resources National Water and
Department of Conservation Climate Center
Agriculture Service Portland, Oregon
WEEKLY SNOTEL SNOWPACK AND PRECIPITATION REPORT
As of Monday, January 03, 2005
The National Water and Climate Center creates and transmits the weekly
Western US Basin snowpack and cumulative precipitation report every Monday.
This report is based on an analysis of data collected at over 680 NRCS
SNOTEL sites in the Western United States. A narrative description of
significant changes and events will be included in this report as
conditions warrant. Please contact one of the names below if you have any
questions or comments.
WEEKLY SNOTEL SNOWPACK AND PRECIPITATION REPORT
As of Monday, January 03, 2005
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STATE PERCENT OF AVERAGE
RIVER BASIN Number Snow Water Accum
of Sites Equivalent Precip
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ALASKA
ANCHORAGE/SHIP CREEK BASIN ................... 1 of 2 134 148
SUSITNA BASIN ................................ 1 of 2 160 175
NORTHERN KENAI MOUNTAINS ..................... 5 of 6 88 106
SOUTHERN KENAI ............................... 1 of 3 * *
CHENA BASIN .................................. 5 of 6 79 113
UPPER TANANA ................................. 1 of 1 136 195
KOYUKUK BASIN ................................ 1 of 3 * 107
CENTRAL YUKON BASIN .......................... 0 of 2 * 73
SEWARD PENNINSULA ............................ 0 of 3 * *
KUPARUK RIVER BASIN .......................... 0 of 1 * 72
SOUTHEAST ALASKA BASIN ....................... 0 of 1 * *
ARIZONA
VERDE RIVER BASIN ............................ 4 of 5 121 191
SAN FRANCISCO PEAKS .......................... 1 of 1 211 115
CENTRAL MOGOLLON RIM ......................... 3 of 3 69 141
LITTLE COLORADO - SOUTHERN HEADWATERS ........ 2 of 2 81 119
UPPER SALT RIVER BASIN / WHITE MOUNTAINS ..... 6 of 6 99 116
SAN FRANCISCO RIVER BASIN .................... 5 of 5 112 124
UPPER GILA RIVER BASIN ....................... 3 of 3 74 123
CALIFORNIA
NORTHERN GREAT BASIN ......................... 4 of 4 105 110
TRUCKEE RIVER ................................ 8 of 8 159 118
LAKE TAHOE ................................... 7 of 8 164 112
CARSON RIVER ................................. 5 of 9 174 124
WALKER RIVER ................................. 5 of 6 180 144
KLAMATH ...................................... 10 of 10 66 82
COLORADO
GUNNISON RIVER BASIN ......................... 11 of 13 114 113
UPPER COLORADO RIVER BASIN ................... 27 of 28 90 92
SOUTH PLATTE RIVER BASIN ..................... 15 of 15 87 91
LARAMIE AND NORTH PLATTE RIVER BASINS ........ 12 of 13 90 88
YAMPA AND WHITE RIVER BASINS ................. 17 of 19 88 92
ARKANSAS RIVER BASIN ......................... 6 of 7 105 95
UPPER RIO GRANDE BASIN ....................... 10 of 12 113 114
SAN MIGUEL, DOLORES, ANIMAS
AND SAN JUAN RIVER BASINS ................. 15 of 16 107 107
IDAHO
IDAHO PANHANDLE REGION ....................... 13 of 17 60 82
CLEARWATER BASIN ............................. 14 of 15 63 76
SALMON BASIN ................................. 21 of 22 77 71
WEISER BASIN ................................. 3 of 4 83 77
PAYETTE BASIN ................................ 8 of 11 72 67
BOISE BASIN .................................. 10 of 11 78 75
BIG WOOD BASIN ............................... 9 of 9 89 85
LITTLE WOOD BASIN ............................ 4 of 5 98 101
BIG LOST BASIN ............................... 4 of 5 92 87
LITTLE LOST, BIRCH BASINS .................... 4 of 4 86 87
MEDICINE LODGE, BEAVER, CAMAS BASINS ......... 6 of 6 110 107
HENRYS FORK, TETON BASINS .................... 9 of 9 92 90
SNAKE BASIN ABOVE PALISADES .................. 17 of 18 81 81
WILLOW, BLACKFOOT, PORTNEUF BASINS ........... 5 of 5 88 99
OAKLEY BASIN ................................. 3 of 3 100 103
SALMON FALLS BASIN ........................... 5 of 5 99 98
BRUNEAU BASIN ................................ 5 of 5 91 92
OWYHEE BASIN ................................. 7 of 8 66 93
BEAR RIVER BASIN ............................. 15 of 15 106 113
MONTANA
KOOTENAI RIVER BASIN ......................... 8 of 8 69 93
FLATHEAD RIVER BASIN ......................... 15 of 15 71 86
UPPER CLARK FORK RIVER BASIN ................. 14 of 15 64 67
BITTERROOT RIVER BASIN ....................... 7 of 7 59 63
LOWER CLARK FORK RIVER BASIN ................. 8 of 8 55 76
JEFFERSON RIVER BASIN ........................ 19 of 19 78 73
MADISON RIVER BASIN .......................... 11 of 11 87 85
GALLATIN RIVER BASIN ......................... 7 of 7 90 84
MISSOURI HEADWATERS .......................... 31 of 31 84 79
HEADWATERS MISSOURI MAINSTEM ................. 5 of 5 66 60
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS .. 9 of 9 72 77
SUN, TETON AND MARIAS RIVER BASINS ........... 6 of 6 54 70
MISSOURI MAINSTEM RIVER BASIN ................ 20 of 20 64 72
ST. MARY AND MILK RIVER BASINS ............... 3 of 3 66 83
UPPER YELLOWSTONE RIVER BASIN ................ 22 of 23 76 76
WIND RIVER BASIN (WYOMING) ................... 12 of 12 99 95
SHOSHONE RIVER BASIN (WYOMING) ............... 6 of 6 65 73
BIGHORN RIVER BASIN (WYOMING) ................ 16 of 16 73 80
TONGUE RIVER BASIN (WYOMING) ................. 6 of 6 80 89
POWDER RIVER BASIN (WYOMING) ................. 6 of 6 89 89
LOWER YELLOWSTONE RIVER BASIN ................ 32 of 32 85 88
NEVADA
NORTHERN GREAT BASIN ......................... 4 of 4 105 110
SNAKE RIVER .................................. 3 of 3 102 101
OWYHEE RIVER ................................. 5 of 6 67 91
UPPER HUMBOLDT RIVER ......................... 5 of 5 124 124
LOWER HUMBOLDT RIVER ......................... 4 of 5 105 106
CLOVER VALLEY ................................ 1 of 1 109 102
EASTERN NEVADA ............................... 3 of 3 222 189
NEW MEXICO
RIO CHAMA RIVER BASIN ........................ 4 of 4 75 73
UPPER RIO GRANDE BASIN ....................... 9 of 9 114 114
SANGRE DE CRISTO MOUNTAIN RANGE BASINS ....... 9 of 9 113 122
JEMEZ RIVER BASIN ............................ 3 of 3 77 86
SAN FRANCISCO RIVER BASIN .................... 3 of 3 97 118
GILA RIVER BASIN ............................. 3 of 3 74 123
MIMBRES RIVER BASIN .......................... 2 of 2 131 140
PECOS RIVER BASIN ............................ 1 of 1 122 142
SAN JUAN RIVER HEADWATERS .................... 5 of 5 121 119
ANIMAS RIVER BASIN ........................... 7 of 7 112 108
CIMARRON RIVER BASIN ......................... 2 of 2 109 132
ZUNI/BLUEWATER RIVER BASIN ................... 1 of 1 60 73
RIO HONDO BASIN .............................. 1 of 1 124 156
OREGON
OWYHEE ....................................... 7 of 7 66 93
MALHEUR ...................................... 3 of 3 65 84
GRAND RONDE, POWDER, BURNT, IMNAHA ........... 12 of 14 56 74
UMATILLA, WALLA WALLA, WILLOW ................ 6 of 9 42 68
JOHN DAY ..................................... 8 of 10 86 72
DESCHUTES, CROOKED ........................... 10 of 11 74 65
LOWER COLUMBIA, HOOD RIVER ................... 7 of 7 21 59
COAST RANGE .................................. 2 of 2 28 53
WILLAMETTE ................................... 16 of 18 37 62
ROGUE, UMPQUA ................................ 7 of 10 57 82
KLAMATH ...................................... 10 of 14 66 82
LAKE COUNTY, GOOSE LAKE ...................... 7 of 9 113 102
HARNEY ....................................... 7 of 7 88 77
UTAH
BEAR RIVER ................................... 8 of 9 119 120
WEBER-OGDEN RIVERS ........................... 14 of 17 132 136
PROVO R.-UTAH LAKE-JORDAN R. ................. 13 of 15 126 140
TOOELE VALLEY-VERNON CREEK ................... 3 of 3 153 169
GREEN RIVER .................................. 6 of 6 156 152
DUCHESNE RIVER ............................... 12 of 12 173 168
PRICE-SAN RAFAEL ............................. 4 of 5 104 137
DIRTY DEVIL .................................. 3 of 3 139 154
SOUTH EASTERN UTAH ........................... 3 of 3 136 135
SEVIER RIVER ................................. 14 of 15 171 183
BEAVER RIVER ................................. 2 of 2 150 173
ESCALANTE RIVER .............................. 2 of 3 232 228
VIRGIN RIVER ................................. 7 of 9 239 272
WASHINGTON
PRIEST, COEUR D'ALENE, ST.
JOE, SPOKANE, PALOUSE BASINS .............. 12 of 15 59 83
COLUMBIA ABOVE METHOW ........................ 4 of 5 42 70
CHELAN, ENTIAT, WENATCHEE .................... 7 of 8 46 71
UPPER YAKIMA ................................. 4 of 5 30 57
LOWER YAKIMA ................................. 7 of 7 37 60
WALLA WALLA, TOUCHET ......................... 2 of 4 36 *
LEWIS, COWLITZ ............................... 8 of 10 41 70
WHITE, GREEN, PUYALLUP ....................... 5 of 8 37 62
CEDAR, SNOQUALMIE, SKYKOMISH, TOLT ........... 8 of 9 25 74
BAKER, SKAGIT, NOOKSACK ...................... 4 of 9 * 79
OLYMPIC ...................................... 1 of 3 * *
WYOMING
SNAKE RIVER .................................. 14 of 14 83 80
UPPER YELLOWSTONE-MADISON .................... 13 of 13 79 76
WIND RIVER ................................... 9 of 9 108 102
BIGHORN BASIN ................................ 16 of 16 73 80
SHOSHONE RIVER ............................... 7 of 7 65 73
POWDER-TONGUE ................................ 12 of 12 84 89
BELLE FOURCHE ................................ 3 of 3 50 67
UPPER N. PLATTE RIVER ........................ 11 of 11 97 103
LOWER N. PLATTE - SWEETWATER - LARAMIE ....... 9 of 10 92 94
LITTLE SNAKE RIVER ........................... 5 of 5 102 110
UPPER GREEN RIVER ............................ 11 of 11 85 92
LOWER GREEN RIVER ............................ 7 of 7 109 109
UPPER BEAR RIVER ............................. 7 of 7 118 118
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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 Accumulated 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.
* = Data are not available or data may not provide a valid measure
of conditions for over half of the sites within the basin.
Refer to the individual state reports for a complete data
listing and basin analysis.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
Reference period for average conditions is 1971-2000.
Provisional data, subject to revision.
Western Regional Climate Center