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 WEDNESDAY: JANUARY 18 , 2017 ----------------------------------------------------------------------------- STATE PERCENT OF Normal RIVER BASIN Number Snow Water Accum of Sites Equivalent Precip ----------------------------------------------------------------------------- ALASKA ANCHORAGE/SHIP CREEK BASIN ................... 4 of 4 36 48 SUSITNA BASIN ................................ 3 of 5 68 37 NORTHERN KENAI MOUNTAINS ..................... 7 of 7 42 62 SOUTHERN KENAI ............................... 3 of 6 44 68 COPPER BASIN ................................. 2 of 3 69 51 PRINCE WILLIAM SOUND ......................... 1 of 7 * 64 CHENA BASIN .................................. 5 of 7 111 75 UPPER TANANA ................................. 2 of 5 * * KOYUKUK BASIN ................................ 2 of 6 * 27 CENTRAL YUKON BASIN .......................... 0 of 5 * 54 NORTON SOUND ................................. 0 of 4 * 52 KUPARUK-SAGAVANIRKTOK RIVER BASIN ............ 0 of 3 * 64 NORTHWEST ARCTIC RIVER BASIN ................. 0 of 1 * * SOUTHEAST ALASKA BASIN ....................... 1 of 3 * 84 ARIZONA VERDE RIVER BASIN ............................ 5 of 10 95 145 SAN FRANCISCO PEAKS .......................... 1 of 1 184 150 CENTRAL MOGOLLON RIM ......................... 3 of 4 87 138 LITTLE COLORADO - SOUTHERN HEADWATERS ........ 5 of 6 95 135 UPPER SALT RIVER BASIN / WHITE MOUNTAINS ..... 7 of 9 56 121 SAN FRANCISCO / UPPER GILA RIVER BASIN ....... 7 of 8 46 117 CHUSKA MOUNTAINS ............................. 0 of 2 * * CALIFORNIA NORTHERN GREAT BASIN ......................... 3 of 5 152 143 TRUCKEE RIVER ................................ 8 of 9 181 214 LAKE TAHOE ................................... 8 of 8 176 230 CARSON RIVER ................................. 9 of 9 178 205 WALKER RIVER ................................. 7 of 7 187 211 KLAMATH ...................................... 16 of 18 118 131 COLORADO GUNNISON RIVER BASIN ......................... 12 of 16 169 134 UPPER COLORADO RIVER BASIN ................... 26 of 31 154 133 SOUTH PLATTE RIVER BASIN ..................... 17 of 22 154 141 LARAMIE AND NORTH PLATTE RIVER BASINS ........ 11 of 12 140 137 YAMPA AND WHITE RIVER BASINS ................. 17 of 20 138 124 ARKANSAS RIVER BASIN ......................... 7 of 9 161 118 UPPER RIO GRANDE BASIN ....................... 10 of 16 150 111 SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASIN .................. 17 of 19 168 128 IDAHO NORTHERN PANHANDLE REGION .................... 10 of 10 64 120 SPOKANE RIVER BASIN .......................... 10 of 10 74 112 CLEARWATER BASIN ............................. 14 of 16 84 104 SALMON BASIN ................................. 20 of 22 96 110 WEISER BASIN ................................. 3 of 4 71 97 PAYETTE BASIN ................................ 10 of 11 92 101 BOISE BASIN .................................. 9 of 10 112 120 BIG WOOD BASIN ............................... 8 of 9 130 142 LITTLE WOOD BASIN ............................ 5 of 5 123 159 BIG LOST BASIN ............................... 5 of 5 114 156 LITTLE LOST, BIRCH BASINS .................... 3 of 4 113 155 MEDICINE LODGE, BEAVER, CAMAS BASINS ......... 3 of 4 87 135 HENRYS FORK, TETON BASINS .................... 8 of 8 113 151 SNAKE BASIN ABOVE PALISADES .................. 18 of 18 141 163 WILLOW, BLACKFOOT, PORTNEUF BASINS ........... 6 of 6 149 161 SNAKE BASIN ABOVE AMERICAN FALLS ............. 29 of 29 135 159 RAFT BASIN ................................... 1 of 2 145 147 GOOSE CREEK BASIN ............................ 2 of 2 117 127 SALMON FALLS BASIN ........................... 5 of 5 117 137 BRUNEAU BASIN ................................ 5 of 5 140 153 OWYHEE BASIN ................................. 8 of 8 158 135 BEAR RIVER BASIN ............................. 15 of 15 169 167 MONTANA KOOTENAI RIVER BASIN ......................... 8 of 8 78 123 FLATHEAD RIVER BASIN ......................... 13 of 16 84 119 UPPER CLARK FORK RIVER BASIN ................. 13 of 15 78 102 BITTERROOT RIVER BASIN ....................... 7 of 7 82 97 LOWER CLARK FORK RIVER BASIN ................. 8 of 8 77 110 JEFFERSON RIVER BASIN ........................ 18 of 19 82 110 MADISON RIVER BASIN .......................... 11 of 11 86 133 GALLATIN RIVER BASIN ......................... 7 of 7 77 125 MISSOURI HEADWATERS .......................... 30 of 31 84 120 HEADWATERS MISSOURI MAINSTEM ................. 5 of 5 86 109 SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS .. 9 of 10 67 106 SUN, TETON AND MARIAS RIVER BASINS ........... 5 of 6 92 109 MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21 82 110 ST. MARY AND MILK RIVER BASINS ............... 3 of 3 86 126 UPPER YELLOWSTONE RIVER BASIN ................ 22 of 24 108 133 WIND RIVER BASIN (WYOMING) ................... 11 of 13 157 164 SHOSHONE RIVER BASIN (WYOMING) ............... 5 of 6 132 173 BIGHORN RIVER BASIN (WYOMING) ................ 15 of 16 118 141 TONGUE RIVER BASIN (WYOMING) ................. 6 of 7 102 101 POWDER RIVER BASIN (WYOMING) ................. 6 of 7 83 98 LOWER YELLOWSTONE RIVER BASIN ................ 30 of 35 126 139 NEVADA NORTHERN GREAT BASIN ......................... 6 of 9 163 152 SNAKE RIVER .................................. 7 of 10 132 144 OWYHEE RIVER ................................. 5 of 5 154 149 UPPER HUMBOLDT RIVER ......................... 9 of 9 161 157 LOWER HUMBOLDT RIVER ......................... 5 of 9 154 155 CLOVER VALLEY & FRANKLIN RIVER ............... 5 of 6 190 150 EASTERN NEVADA BASINS ........................ 4 of 4 140 122 NEW MEXICO RIO CHAMA RIVER BASIN ........................ 4 of 4 179 137 UPPER RIO GRANDE BASIN ....................... 9 of 9 148 112 SANGRE DE CRISTO MOUNTAIN RANGE BASINS ....... 8 of 11 130 106 JEMEZ RIVER BASIN ............................ 3 of 3 134 105 SAN FRANCISCO RIVER BASIN .................... 3 of 3 43 110 GILA RIVER BASIN ............................. 3 of 3 60 128 MIMBRES RIVER BASIN .......................... 2 of 2 73 140 PECOS RIVER BASIN ............................ 1 of 1 98 93 SAN JUAN RIVER HEADWATERS .................... 5 of 5 145 119 ANIMAS RIVER BASIN ........................... 7 of 7 165 125 CIMARRON RIVER BASIN ......................... 2 of 2 153 98 ZUNI/BLUEWATER RIVER BASIN ................... 1 of 1 95 155 RIO HONDO BASIN .............................. 1 of 1 63 111 CHUSKA MOUNTAINS ............................. 0 of 1 * * OREGON OWYHEE ....................................... 8 of 8 158 135 MALHEUR ...................................... 3 of 3 126 124 GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 13 of 17 95 111 UMATILLA, WALLA WALLA, WILLOW ................ 7 of 8 125 113 JOHN DAY ..................................... 12 of 13 127 119 UPPER DESCHUTES, CROOKED ..................... 14 of 14 126 123 HOOD, SANDY, LOWER DESCHUTES ................. 8 of 8 124 110 COAST RANGE .................................. 1 of 2 760 128 WILLAMETTE ................................... 19 of 23 139 120 ROGUE, UMPQUA ................................ 11 of 12 120 136 KLAMATH ...................................... 16 of 18 118 131 LAKE COUNTY, GOOSE LAKE ...................... 8 of 9 140 145 HARNEY ....................................... 8 of 9 125 119 UTAH RAFT RIVER ................................... 1 of 2 145 147 BEAR RIVER ................................... 18 of 24 169 168 WEBER-OGDEN RIVERS ........................... 17 of 20 161 140 PROVO R.-UTAH LAKE-JORDAN R. ................. 15 of 17 164 139 TOOELE VALLEY-VERNON CREEK ................... 3 of 4 165 130 NORTHEASTERN UINTAHS ......................... 6 of 10 151 119 DUCHESNE RIVER ............................... 12 of 13 201 164 PRICE-SAN RAFAEL ............................. 6 of 11 196 154 DIRTY DEVIL .................................. 3 of 6 181 129 SOUTH EASTERN UTAH ........................... 3 of 6 163 119 UPPER SEVIER RIVER ........................... 13 of 17 144 112 SAN PITCH RIVER .............................. 5 of 11 * * LOWER SEVIER RIVER ........................... 1 of 3 * * BEAVER RIVER ................................. 2 of 2 149 132 ESCALANTE RIVER .............................. 3 of 4 128 95 SOUTHWESTERN UTAH ............................ 10 of 13 181 122 WASHINGTON NORTHERN PANHANDLE ........................... 10 of 10 64 120 SPOKANE ...................................... 10 of 10 74 112 UPPER COLUMBIA ............................... 5 of 6 88 124 CENTRAL COLUMBIA ............................. 6 of 8 88 106 UPPER YAKIMA ................................. 4 of 5 75 94 LOWER YAKIMA ................................. 7 of 9 92 115 LOWER SNAKE .................................. 18 of 22 83 105 LOWER COLUMBIA ............................... 18 of 22 125 119 SOUTH PUGET SOUND ............................ 7 of 10 99 100 CENTRAL PUGET SOUND .......................... 7 of 9 103 97 NORTH PUGET SOUND ............................ 7 of 12 94 102 OLYMPIC ...................................... 3 of 4 107 131 WYOMING SNAKE RIVER .................................. 20 of 20 135 159 MADISON-GALLATIN ............................. 5 of 5 103 146 YELLOWSTONE .................................. 12 of 13 120 141 WIND RIVER ................................... 10 of 12 159 163 BIGHORN BASIN ................................ 10 of 11 106 110 SHOSHONE RIVER ............................... 4 of 5 137 173 POWDER RIVER ................................. 6 of 7 83 98 TONGUE RIVER ................................. 6 of 7 102 101 BELLE FOURCHE ................................ 1 of 1 114 81 CHEYENNE RIVER BASIN ......................... 2 of 2 97 72 UPPER N. PLATTE .............................. 15 of 18 134 131 SWEETWATER ................................... 3 of 3 210 178 LOWER N. PLATTE .............................. 3 of 4 110 86 LARAMIE RIVER ................................ 6 of 6 130 123 S. PLATTE .................................... 2 of 3 129 126 LITTLE SNAKE RIVER ........................... 8 of 8 139 127 UPPER GREEN RIVER ............................ 12 of 13 163 184 LOWER GREEN RIVER ............................ 7 of 11 160 149 UPPER BEAR RIVER ............................. 7 of 9 170 162 ----------------------------------------------------------------------------- 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 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 Normal Snow Water Equivalent and Total Precipitation values 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.