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 28, 2013 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 800 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 us if you have any questions or comments. WEEKLY SNOTEL SNOWPACK AND PRECIPITATION REPORT As of Monday, January 28, 2013 --------------------------------------------------------------------------- STATE PERCENT OF AVERAGE RIVER BASIN Number Snow Water Accum of Sites Equivalent Precip --------------------------------------------------------------------------- ALASKA ANCHORAGE/SHIP CREEK BASIN ................... 4 of 4 89 91 SUSITNA BASIN ................................ 5 of 6 79 104 NORTHERN KENAI MOUNTAINS ..................... 7 of 7 87 76 SOUTHERN KENAI ............................... 3 of 6 126 70 COPPER BASIN ................................. 3 of 4 79 70 PRINCE WILLIAM SOUND ......................... 0 of 6 * 75 CHENA BASIN .................................. 5 of 7 111 107 UPPER TANANA ................................. 2 of 4 77 * KOYUKUK BASIN ................................ 2 of 4 42 57 CENTRAL YUKON BASIN .......................... 0 of 4 * 83 SEWARD PENINSULA ............................. 0 of 2 * 84 KUPARUK-SAGAVANIRKTOK RIVER BASIN ............ 0 of 3 * 90 NORTHWEST ARCTIC RIVER BASIN ................. 0 of 1 * * SOUTHEAST ALASKA BASIN ....................... 1 of 2 116 77 ARIZONA VERDE RIVER BASIN ............................ 5 of 10 92 101 SAN FRANCISCO PEAKS .......................... 1 of 1 120 95 CENTRAL MOGOLLON RIM ......................... 3 of 4 86 102 LITTLE COLORADO - SOUTHERN HEADWATERS ........ 5 of 6 82 94 UPPER SALT RIVER BASIN / WHITE MOUNTAINS ..... 7 of 8 80 82 SAN FRANCISCO / UPPER GILA RIVER BASIN ....... 7 of 8 57 60 CHUSKA MOUNTAINS ............................. 0 of 2 * * CALIFORNIA NORTHERN GREAT BASIN ......................... 4 of 5 91 95 TRUCKEE RIVER ................................ 8 of 8 118 114 LAKE TAHOE ................................... 8 of 8 98 120 CARSON RIVER ................................. 9 of 9 109 105 WALKER RIVER ................................. 6 of 6 116 110 KLAMATH ...................................... 16 of 18 84 110 COLORADO GUNNISON RIVER BASIN ......................... 12 of 16 72 67 UPPER COLORADO RIVER BASIN ................... 21 of 31 62 65 SOUTH PLATTE RIVER BASIN ..................... 11 of 20 54 61 LARAMIE AND NORTH PLATTE RIVER BASINS ........ 8 of 12 64 71 YAMPA AND WHITE RIVER BASINS ................. 17 of 20 68 69 ARKANSAS RIVER BASIN ......................... 5 of 9 56 61 UPPER RIO GRANDE BASIN ....................... 8 of 16 70 66 SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASIN .................. 12 of 18 79 67 IDAHO NORTHERN PANHANDLE REGION .................... 10 of 10 104 123 SPOKANE RIVER BASIN .......................... 9 of 10 77 106 CLEARWATER BASIN ............................. 14 of 16 78 103 SALMON BASIN ................................. 22 of 22 97 111 WEISER BASIN ................................. 4 of 4 71 121 PAYETTE BASIN ................................ 11 of 11 87 115 BOISE BASIN .................................. 10 of 10 80 96 BIG WOOD BASIN ............................... 9 of 9 103 111 LITTLE WOOD BASIN ............................ 5 of 5 121 126 BIG LOST BASIN ............................... 5 of 5 131 123 LITTLE LOST, BIRCH BASINS .................... 4 of 4 114 105 MEDICINE LODGE, BEAVER, CAMAS BASINS ......... 4 of 4 114 107 HENRYS FORK, TETON BASINS .................... 8 of 8 99 99 SNAKE BASIN ABOVE PALISADES .................. 18 of 18 91 90 WILLOW, BLACKFOOT, PORTNEUF BASINS ........... 6 of 6 75 95 SNAKE BASIN ABOVE AMERICAN FALLS ............. 29 of 29 92 94 RAFT BASIN ................................... 1 of 2 92 95 GOOSE CREEK BASIN ............................ 2 of 2 81 98 SALMON FALLS BASIN ........................... 5 of 5 81 93 BRUNEAU BASIN ................................ 5 of 5 78 92 OWYHEE BASIN ................................. 8 of 8 69 96 BEAR RIVER BASIN ............................. 15 of 15 80 86 MONTANA KOOTENAI RIVER BASIN ......................... 8 of 8 98 117 FLATHEAD RIVER BASIN ......................... 14 of 16 88 118 UPPER CLARK FORK RIVER BASIN ................. 13 of 15 86 100 BITTERROOT RIVER BASIN ....................... 7 of 7 79 100 LOWER CLARK FORK RIVER BASIN ................. 7 of 8 81 112 JEFFERSON RIVER BASIN ........................ 19 of 19 98 98 MADISON RIVER BASIN .......................... 11 of 11 100 101 GALLATIN RIVER BASIN ......................... 7 of 7 94 98 MISSOURI HEADWATERS .......................... 31 of 31 98 99 HEADWATERS MISSOURI MAINSTEM ................. 5 of 5 88 101 SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS .. 9 of 10 89 108 SUN, TETON AND MARIAS RIVER BASINS ........... 6 of 6 71 117 MISSOURI MAINSTEM RIVER BASIN ................ 20 of 21 82 112 ST. MARY AND MILK RIVER BASINS ............... 3 of 3 100 136 UPPER YELLOWSTONE RIVER BASIN ................ 23 of 24 92 96 WIND RIVER BASIN (WYOMING) ................... 10 of 13 89 81 SHOSHONE RIVER BASIN (WYOMING) ............... 5 of 6 93 99 BIGHORN RIVER BASIN (WYOMING) ................ 14 of 16 88 91 TONGUE RIVER BASIN (WYOMING) ................. 6 of 7 69 70 POWDER RIVER BASIN (WYOMING) ................. 6 of 7 86 93 LOWER YELLOWSTONE RIVER BASIN ................ 29 of 35 85 85 NEVADA NORTHERN GREAT BASIN ......................... 4 of 5 91 95 SNAKE RIVER .................................. 3 of 3 76 90 OWYHEE RIVER ................................. 5 of 6 68 95 UPPER HUMBOLDT RIVER ......................... 5 of 5 82 91 LOWER HUMBOLDT RIVER ......................... 6 of 7 89 96 CLOVER VALLEY ................................ 1 of 1 47 71 EASTERN NEVADA ............................... 3 of 8 * * NEW MEXICO RIO CHAMA RIVER BASIN ........................ 4 of 4 80 62 UPPER RIO GRANDE BASIN ....................... 7 of 9 73 68 SANGRE DE CRISTO MOUNTAIN RANGE BASINS ....... 9 of 9 63 60 JEMEZ RIVER BASIN ............................ 3 of 3 66 51 SAN FRANCISCO RIVER BASIN .................... 3 of 3 62 65 GILA RIVER BASIN ............................. 3 of 3 42 43 MIMBRES RIVER BASIN .......................... 2 of 2 31 38 PECOS RIVER BASIN ............................ 1 of 1 46 56 SAN JUAN RIVER HEADWATERS .................... 5 of 5 76 70 ANIMAS RIVER BASIN ........................... 5 of 7 73 62 CIMARRON RIVER BASIN ......................... 2 of 2 70 67 ZUNI/BLUEWATER RIVER BASIN ................... 1 of 1 78 63 RIO HONDO BASIN .............................. 1 of 1 87 58 CHUSKA MOUNTAINS ............................. 0 of 1 * * OREGON OWYHEE ....................................... 8 of 8 69 96 MALHEUR ...................................... 3 of 3 53 100 GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 16 of 17 78 105 UMATILLA, WALLA WALLA, WILLOW ................ 7 of 8 84 108 JOHN DAY ..................................... 13 of 13 81 103 UPPER DESCHUTES, CROOKED ..................... 13 of 14 89 108 HOOD, SANDY, LOWER DESCHUTES ................. 8 of 8 95 107 COAST RANGE .................................. 1 of 2 0 112 WILLAMETTE ................................... 18 of 23 93 108 ROGUE, UMPQUA ................................ 11 of 12 95 118 KLAMATH ...................................... 16 of 18 84 110 LAKE COUNTY, GOOSE LAKE ...................... 9 of 9 97 109 HARNEY ....................................... 9 of 9 81 94 UTAH RAFT RIVER ................................... 1 of 2 92 95 BEAR RIVER ................................... 23 of 24 81 89 WEBER-OGDEN RIVERS ........................... 17 of 20 78 89 PROVO R.-UTAH LAKE-JORDAN R. ................. 15 of 17 89 88 TOOELE VALLEY-VERNON CREEK ................... 3 of 4 103 89 NORTHEASTERN UINTAHS ......................... 7 of 10 93 89 DUCHESNE RIVER ............................... 13 of 13 97 87 PRICE-SAN RAFAEL ............................. 7 of 10 90 89 DIRTY DEVIL .................................. 3 of 4 94 79 SOUTH EASTERN UTAH ........................... 3 of 5 102 89 UPPER SEVIER RIVER ........................... 14 of 17 102 88 SAN PITCH RIVER .............................. 5 of 11 * * LOWER SEVIER RIVER ........................... 1 of 3 * * BEAVER RIVER ................................. 2 of 2 96 100 ESCALANTE RIVER .............................. 3 of 3 99 92 SOUTHWESTERN UTAH ............................ 10 of 12 111 88 WASHINGTON NORTHERN PANHANDLE ........................... 10 of 10 104 123 SPOKANE ...................................... 9 of 10 77 106 UPPER COLUMBIA ............................... 5 of 6 125 136 CENTRAL COLUMBIA ............................. 7 of 8 99 107 UPPER YAKIMA ................................. 4 of 5 98 98 LOWER YAKIMA ................................. 7 of 9 106 110 LOWER SNAKE .................................. 20 of 22 78 105 LOWER COLUMBIA ............................... 18 of 22 113 113 SOUTH PUGET SOUND ............................ 6 of 10 118 106 CENTRAL PUGET SOUND .......................... 7 of 9 107 97 NORTH PUGET SOUND ............................ 7 of 12 120 106 OLYMPIC ...................................... 3 of 4 159 108 WYOMING SNAKE RIVER .................................. 20 of 20 94 91 MADISON-GALLATIN ............................. 5 of 5 99 99 YELLOWSTONE .................................. 13 of 13 96 96 WIND RIVER ................................... 9 of 12 88 81 BIGHORN BASIN ................................ 9 of 11 83 83 SHOSHONE RIVER ............................... 4 of 5 94 97 POWDER RIVER ................................. 6 of 7 86 93 TONGUE RIVER ................................. 6 of 7 69 70 BELLE FOURCHE ................................ 1 of 1 68 68 CHEYENNE RIVER BASIN ......................... 2 of 2 73 74 UPPER N. PLATTE .............................. 11 of 18 67 70 SWEETWATER ................................... 2 of 3 83 68 LOWER N. PLATTE .............................. 2 of 4 25 47 LARAMIE RIVER ................................ 4 of 6 58 61 S. PLATTE .................................... 2 of 3 56 64 LITTLE SNAKE RIVER ........................... 8 of 8 70 69 UPPER GREEN RIVER ............................ 12 of 13 88 85 LOWER GREEN RIVER ............................ 8 of 11 89 83 UPPER BEAR RIVER ............................. 8 of 9 85 85 --------------------------------------------------------------------------- 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. Reference period for average conditions is 1971-2000. Provisional data, subject to revision. Supporting Information: Individual SNOTEL site current year graphs: http://www.wcc.nrcs.usda.gov/cgibin/site-wygraph-multi.pl SNOTEL Precipitation Maps: ftp://ftp.wcc.nrcs.usda.gov/data/water/wcs/gis/maps/west_mtdprecpctnormal_upd ate.pdf SNOTEL Snow Water Equivalent Maps: ftp://ftp.wcc.nrcs.usda.gov/data/water/wcs/gis/maps/west_swepctnormal_update. pdf Western Regional Climate Center SNOTEL maps: http://www.wrcc.dri.edu/snotelanom/basinpre.html] (color) http://www.wrcc.dri.edu/snotelanom/basinpren.html (numeric) Western Regional Climate Center Cumulative Precipitation maps: http://www.wrcc.dri.edu/snotelanom/basinswe.html (color) http://www.wrcc.dri.edu/snotelanom/basinswen.html (numeric) *************************************************************************** You can view this report on the National Water and Climate Center Homepage: ftp://ftp.wcc.nrcs.usda.gov/data/snow/update/ws.txt For questions, comments and more information about this report please contact: Jolyne Lea - 503-414-3040, Jolyne.lea@por.usda.gov