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 FRIDAY: NOVEMBER 20 , 2009 ----------------------------------------------------------------------------- STATE PERCENT OF AVERAGE RIVER BASIN Number Snow Water Accum of Sites Equivalent Precip ----------------------------------------------------------------------------- ALASKA ANCHORAGE/SHIP CREEK BASIN ................... 3 of 3 37 74 SUSITNA BASIN ................................ 4 of 6 43 58 NORTHERN KENAI MOUNTAINS ..................... 6 of 6 62 89 SOUTHERN KENAI ............................... 3 of 6 105 93 COPPER BASIN ................................. 2 of 4 65 58 PRINCE WILLIAM SOUND ......................... 0 of 6 * 61 CHENA BASIN .................................. 6 of 6 63 47 UPPER TANANA ................................. 1 of 3 * * KOYUKUK BASIN ................................ 1 of 3 * 45 CENTRAL YUKON BASIN .......................... 0 of 3 * 60 SEWARD PENINSULA ............................. 0 of 3 * 29 KUPARUK RIVER BASIN .......................... 0 of 1 * 118 SOUTHEAST ALASKA BASIN ....................... 1 of 1 78 80 ARIZONA VERDE RIVER BASIN ............................ 4 of 5 15 9 SAN FRANCISCO PEAKS .......................... 1 of 1 36 25 CENTRAL MOGOLLON RIM ......................... 3 of 3 6 15 LITTLE COLORADO - SOUTHERN HEADWATERS ........ 2 of 2 36 40 UPPER SALT RIVER BASIN / WHITE MOUNTAINS ..... 6 of 6 22 21 SAN FRANCISCO RIVER BASIN .................... 4 of 5 14 19 UPPER GILA RIVER BASIN ....................... 2 of 3 14 26 CALIFORNIA NORTHERN GREAT BASIN ......................... 4 of 4 62 89 TRUCKEE RIVER ................................ 8 of 8 18 97 LAKE TAHOE ................................... 8 of 8 7 103 CARSON RIVER ................................. 5 of 9 28 109 WALKER RIVER ................................. 4 of 6 34 118 KLAMATH ...................................... 10 of 10 67 72 COLORADO GUNNISON RIVER BASIN ......................... 11 of 13 76 91 UPPER COLORADO RIVER BASIN ................... 28 of 29 73 96 SOUTH PLATTE RIVER BASIN ..................... 15 of 15 95 115 LARAMIE AND NORTH PLATTE RIVER BASINS ........ 13 of 13 78 113 YAMPA AND WHITE RIVER BASINS ................. 17 of 19 57 95 ARKANSAS RIVER BASIN ......................... 6 of 9 95 110 UPPER RIO GRANDE BASIN ....................... 10 of 13 82 92 SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS ................. 15 of 16 52 76 IDAHO NORTHERN PANHANDLE REGION .................... 13 of 16 71 108 SPOKANE RIVER BASIN .......................... 9 of 10 59 97 CLEARWATER BASIN ............................. 14 of 15 52 84 SALMON BASIN ................................. 22 of 22 94 114 WEISER BASIN ................................. 3 of 4 51 122 PAYETTE BASIN ................................ 9 of 11 58 112 BOISE BASIN .................................. 10 of 11 81 125 BIG WOOD BASIN ............................... 9 of 9 96 132 LITTLE WOOD BASIN ............................ 4 of 5 65 132 BIG LOST BASIN ............................... 4 of 5 97 139 LITTLE LOST, BIRCH BASINS .................... 4 of 4 136 148 MEDICINE LODGE, BEAVER, CAMAS BASINS ......... 6 of 6 90 122 HENRYS FORK, TETON BASINS .................... 9 of 10 68 89 SNAKE BASIN ABOVE PALISADES .................. 17 of 18 60 85 WILLOW, BLACKFOOT, PORTNEUF BASINS ........... 5 of 5 33 78 SNAKE BASIN ABOVE AMERICAN FALLS ............. 29 of 31 61 86 OAKLEY BASIN ................................. 3 of 3 52 85 SALMON FALLS BASIN ........................... 5 of 5 44 94 BRUNEAU BASIN ................................ 5 of 5 41 96 OWYHEE BASIN ................................. 7 of 8 41 106 BEAR RIVER BASIN ............................. 15 of 15 47 85 MONTANA KOOTENAI RIVER BASIN ......................... 8 of 8 101 132 FLATHEAD RIVER BASIN ......................... 15 of 15 96 114 UPPER CLARK FORK RIVER BASIN ................. 14 of 15 109 103 BITTERROOT RIVER BASIN ....................... 7 of 7 58 88 LOWER CLARK FORK RIVER BASIN ................. 8 of 8 71 104 JEFFERSON RIVER BASIN ........................ 19 of 19 127 125 MADISON RIVER BASIN .......................... 11 of 11 111 116 GALLATIN RIVER BASIN ......................... 7 of 7 125 117 MISSOURI HEADWATERS .......................... 31 of 31 120 120 HEADWATERS MISSOURI MAINSTEM ................. 5 of 5 142 124 SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS .. 9 of 9 210 180 SUN, TETON AND MARIAS RIVER BASINS ........... 6 of 6 98 125 MISSOURI MAINSTEM RIVER BASIN ................ 20 of 20 150 148 ST. MARY AND MILK RIVER BASINS ............... 3 of 3 118 129 UPPER YELLOWSTONE RIVER BASIN ................ 23 of 23 118 116 WIND RIVER BASIN (WYOMING) ................... 12 of 12 116 107 SHOSHONE RIVER BASIN (WYOMING) ............... 6 of 6 97 100 BIGHORN RIVER BASIN (WYOMING) ................ 16 of 16 95 96 TONGUE RIVER BASIN (WYOMING) ................. 6 of 6 98 113 POWDER RIVER BASIN (WYOMING) ................. 6 of 6 107 91 LOWER YELLOWSTONE RIVER BASIN ................ 32 of 32 104 103 NEVADA NORTHERN GREAT BASIN ......................... 4 of 4 62 89 SNAKE RIVER .................................. 3 of 3 52 90 OWYHEE RIVER ................................. 5 of 6 29 101 UPPER HUMBOLDT RIVER ......................... 5 of 5 20 88 LOWER HUMBOLDT RIVER ......................... 4 of 5 18 85 CLOVER VALLEY ................................ 1 of 1 39 * EASTERN NEVADA ............................... 3 of 3 9 112 NEW MEXICO RIO CHAMA RIVER BASIN ........................ 4 of 4 112 85 UPPER RIO GRANDE BASIN ....................... 9 of 9 75 89 SANGRE DE CRISTO MOUNTAIN RANGE BASINS ....... 8 of 9 100 111 JEMEZ RIVER BASIN ............................ 3 of 3 61 66 SAN FRANCISCO RIVER BASIN .................... 2 of 3 14 25 GILA RIVER BASIN ............................. 2 of 3 14 26 MIMBRES RIVER BASIN .......................... 2 of 2 0 33 PECOS RIVER BASIN ............................ 1 of 1 52 107 SAN JUAN RIVER HEADWATERS .................... 5 of 5 52 77 ANIMAS RIVER BASIN ........................... 7 of 7 45 74 CIMARRON RIVER BASIN ......................... 2 of 2 114 155 ZUNI/BLUEWATER RIVER BASIN ................... 1 of 1 75 52 RIO HONDO BASIN .............................. 1 of 1 48 103 OREGON OWYHEE ....................................... 7 of 8 41 106 MALHEUR ...................................... 2 of 3 38 87 GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 14 of 14 106 108 UMATILLA, WALLA WALLA, WILLOW ................ 7 of 8 81 99 JOHN DAY ..................................... 14 of 14 68 111 UPPER DESCHUTES, CROOKED ..................... 14 of 14 124 104 HOOD, SANDY, LOWER DESCHUTES ................. 8 of 8 167 107 COAST RANGE .................................. 2 of 2 0 114 WILLAMETTE ................................... 20 of 2 0 108 ROGUE, UMPQUA ................................ 12 of 13 76 84 KLAMATH ...................................... 16 of 18 69 74 LAKE COUNTY, GOOSE LAKE ...................... 8 of 8 73 88 HARNEY ....................................... 6 of 7 39 111 UTAH BEAR RIVER ................................... 8 of 10 49 82 WEBER-OGDEN RIVERS ........................... 13 of 17 42 72 PROVO R.-UTAH LAKE-JORDAN R. ................. 13 of 15 27 65 TOOELE VALLEY-VERNON CREEK ................... 3 of 3 12 73 GREEN RIVER .................................. 6 of 6 76 104 DUCHESNE RIVER ............................... 12 of 12 66 55 PRICE-SAN RAFAEL ............................. 5 of 6 35 61 DIRTY DEVIL .................................. 3 of 3 49 62 SOUTH EASTERN UTAH ........................... 3 of 3 45 62 SEVIER RIVER ................................. 13 of 16 74 71 BEAVER RIVER ................................. 2 of 2 75 74 ESCALANTE RIVER .............................. 2 of 3 83 48 VIRGIN RIVER ................................. 7 of 9 73 51 WASHINGTON NORTHERN PANHANDLE ........................... 12 of 13 71 110 SPOKANE ...................................... 9 of 10 62 98 UPPER COLUMBIA ............................... 4 of 5 121 129 CENTRAL COLUMBIA ............................. 8 of 8 167 145 UPPER YAKIMA ................................. 5 of 5 188 130 LOWER YAKIMA ................................. 7 of 7 214 147 LOWER SNAKE .................................. 2 of 2 79 101 LOWER COLUMBIA ............................... 8 of 10 220 139 SOUTH PUGET SOUND ............................ 8 of 8 159 129 CENTRAL PUGET SOUND .......................... 9 of 9 269 137 NORTH PUGET SOUND ............................ 5 of 9 221 184 OLYMPIC ...................................... 2 of 3 457 276 WYOMING SNAKE RIVER .................................. 14 of 16 64 87 UPPER YELLOWSTONE-MADISON .................... 13 of 13 102 107 WIND RIVER ................................... 9 of 9 118 112 BIGHORN BASIN ................................ 16 of 16 95 96 SHOSHONE RIVER ............................... 7 of 7 98 98 POWDER-TONGUE ................................ 12 of 12 102 102 BELLE FOURCHE ................................ 3 of 3 59 129 UPPER N. PLATTE RIVER ........................ 11 of 11 106 124 LOWER N. PLATTE - SWEETWATER - LARAMIE ....... 10 of 10 110 136 LITTLE SNAKE RIVER ........................... 5 of 5 97 124 UPPER GREEN RIVER ............................ 11 of 12 66 80 LOWER GREEN RIVER ............................ 7 of 7 74 105 UPPER BEAR RIVER ............................. 7 of 7 55 82 ----------------------------------------------------------------------------- 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 1961-90. Provisional data, subject to revision.