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: MARCH 20 , 2019 ----------------------------------------------------------------------------- STATE PERCENT OF Normal RIVER BASIN Number Snow Water Accum of Sites Equivalent Precip ----------------------------------------------------------------------------- ALASKA ANCHORAGE/SHIP CREEK BASIN ................... 4 of 4 67 112 SUSITNA BASIN ................................ 3 of 5 108 129 NORTHERN KENAI MOUNTAINS ..................... 7 of 7 69 135 SOUTHERN KENAI ............................... 2 of 6 * 135 COPPER BASIN ................................. 1 of 3 * 121 PRINCE WILLIAM SOUND ......................... 1 of 7 * 140 CHENA BASIN .................................. 6 of 7 76 87 UPPER TANANA ................................. 2 of 4 74 * KOYUKUK BASIN ................................ 2 of 6 * 134 CENTRAL YUKON BASIN .......................... 0 of 5 * 106 NORTON SOUND ................................. 0 of 4 * 121 KUPARUK-SAGAVANIRKTOK RIVER BASIN ............ 0 of 3 * 95 NORTHWEST ARCTIC RIVER BASIN ................. 0 of 1 * * SOUTHEAST ALASKA BASIN ....................... 1 of 3 * 87 ARIZONA VERDE RIVER BASIN ............................ 5 of 10 189 144 SAN FRANCISCO PEAKS .......................... 1 of 1 150 159 CENTRAL MOGOLLON RIM ......................... 3 of 4 156 140 LITTLE COLORADO - SOUTHERN HEADWATERS ........ 5 of 6 145 138 UPPER SALT RIVER BASIN / WHITE MOUNTAINS ..... 7 of 9 113 129 SAN FRANCISCO / UPPER GILA RIVER BASIN ....... 7 of 8 96* 111 CHUSKA MOUNTAINS ............................. 0 of 2 * * CALIFORNIA NORTHERN GREAT BASIN ......................... 4 of 5 141 109 TRUCKEE RIVER ................................ 8 of 9 168 129 LAKE TAHOE ................................... 8 of 8 184 136 CARSON RIVER ................................. 9 of 9 179 128 WALKER RIVER ................................. 7 of 7 170 139 KLAMATH ...................................... 16 of 18 121 100 COLORADO GUNNISON RIVER BASIN ......................... 13 of 16 153 137 UPPER COLORADO RIVER BASIN ................... 27 of 31 139 126 SOUTH PLATTE RIVER BASIN ..................... 17 of 22 129 125 LARAMIE AND NORTH PLATTE RIVER BASINS ........ 12 of 12 126 125 YAMPA AND WHITE RIVER BASINS ................. 19 of 20 126 116 ARKANSAS RIVER BASIN ......................... 7 of 9 149 128 UPPER RIO GRANDE BASIN ....................... 11 of 16 150 131 SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASIN .................. 17 of 19 158 136 IDAHO NORTHERN PANHANDLE REGION .................... 10 of 10 90 82 SPOKANE RIVER BASIN .......................... 10 of 10 93 81 CLEARWATER BASIN ............................. 14 of 16 96 91 SALMON BASIN ................................. 21 of 22 115 100 WEISER BASIN ................................. 4 of 4 153 111 PAYETTE BASIN ................................ 11 of 11 129 106 BOISE BASIN .................................. 9 of 10 127 110 BIG WOOD BASIN ............................... 8 of 9 131 112 LITTLE WOOD BASIN ............................ 5 of 5 137 125 BIG LOST BASIN ............................... 5 of 5 124 117 LITTLE LOST, BIRCH BASINS .................... 4 of 4 110 103 MEDICINE LODGE, BEAVER, CAMAS BASINS ......... 4 of 4 108 109 HENRYS FORK, TETON BASINS .................... 8 of 8 123 112 SNAKE BASIN ABOVE PALISADES .................. 18 of 18 111 104 WILLOW, BLACKFOOT, PORTNEUF BASINS ........... 5 of 6 122 113 SNAKE BASIN ABOVE AMERICAN FALLS ............. 28 of 29 116 108 RAFT BASIN ................................... 0 of 2 * * GOOSE CREEK BASIN ............................ 2 of 2 108 114 SALMON FALLS BASIN ........................... 5 of 6 110 118 BRUNEAU BASIN ................................ 5 of 6 121 119 OWYHEE BASIN ................................. 8 of 8 132 103 BEAR RIVER BASIN ............................. 12 of 15 116 109 MONTANA KOOTENAI RIVER BASIN ......................... 8 of 8 85 79 FLATHEAD RIVER BASIN ......................... 13 of 16 88 89 UPPER CLARK FORK RIVER BASIN ................. 12 of 15 101 102 BITTERROOT RIVER BASIN ....................... 7 of 7 100 98 LOWER CLARK FORK RIVER BASIN ................. 8 of 8 92 84 JEFFERSON RIVER BASIN ........................ 19 of 19 108 106 MADISON RIVER BASIN .......................... 11 of 11 119 112 GALLATIN RIVER BASIN ......................... 7 of 7 116 121 MISSOURI HEADWATERS .......................... 31 of 31 114 111 HEADWATERS MISSOURI MAINSTEM ................. 5 of 5 111 113 SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS .. 9 of 10 108 107 SUN, TETON AND MARIAS RIVER BASINS ........... 5 of 6 84 82 MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21 103 101 ST. MARY AND MILK RIVER BASINS ............... 3 of 3 88 87 UPPER YELLOWSTONE RIVER BASIN ................ 22 of 24 114 110 WIND RIVER BASIN (WYOMING) ................... 10 of 13 100 89 SHOSHONE RIVER BASIN (WYOMING) ............... 4 of 6 106 113 BIGHORN RIVER BASIN (WYOMING) ................ 14 of 16 101 99 TONGUE RIVER BASIN (WYOMING) ................. 6 of 7 85 79 POWDER RIVER BASIN (WYOMING) ................. 6 of 7 95 87 LOWER YELLOWSTONE RIVER BASIN ................ 29 of 35 97 92 NEVADA NORTHERN GREAT BASIN ......................... 7 of 9 137 106 SNAKE RIVER .................................. 7 of 11 117 117 OWYHEE RIVER ................................. 5 of 5 130 105 UPPER HUMBOLDT RIVER ......................... 9 of 9 137 118 LOWER HUMBOLDT RIVER ......................... 5 of 9 142 114 CLOVER VALLEY & FRANKLIN RIVER ............... 4 of 6 145 125 EASTERN NEVADA BASINS ........................ 4 of 4 142 132 NEW MEXICO RIO CHAMA RIVER BASIN ........................ 4 of 4 132 131 UPPER RIO GRANDE BASIN ....................... 9 of 9 147 130 SANGRE DE CRISTO MOUNTAIN RANGE BASINS ....... 9 of 11 133 129 JEMEZ RIVER BASIN ............................ 3 of 3 114 128 SAN FRANCISCO RIVER BASIN .................... 3 of 3 101* 109 GILA RIVER BASIN ............................. 3 of 3 99* 92 MIMBRES RIVER BASIN .......................... 2 of 2 * 90 PECOS RIVER BASIN ............................ 1 of 1 113 125 SAN JUAN RIVER HEADWATERS .................... 5 of 5 151 129 ANIMAS RIVER BASIN ........................... 7 of 7 164 140 CIMARRON RIVER BASIN ......................... 2 of 2 141 129 ZUNI/BLUEWATER RIVER BASIN ................... 1 of 1 222 122 RIO HONDO BASIN .............................. 1 of 1 13 141 CHUSKA MOUNTAINS ............................. 0 of 1 * * OREGON OWYHEE ....................................... 8 of 8 132 103 MALHEUR ...................................... 3 of 3 148 109 GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 16 of 17 128 107 UMATILLA, WALLA WALLA, WILLOW ................ 6 of 8 157 108 JOHN DAY ..................................... 12 of 13 155 111 UPPER DESCHUTES, CROOKED ..................... 14 of 14 110 89 HOOD, SANDY, LOWER DESCHUTES ................. 8 of 8 98 80 COAST RANGE .................................. 1 of 2 * 75 WILLAMETTE ................................... 17 of 23 110 85 ROGUE, UMPQUA ................................ 12 of 12 115 97 KLAMATH ...................................... 16 of 18 121 100 LAKE COUNTY, GOOSE LAKE ...................... 9 of 9 154 106 HARNEY ....................................... 9 of 9 133 107 UTAH RAFT RIVER ................................... 0 of 2 * * BEAR RIVER ................................... 15 of 24 116 108 WEBER-OGDEN RIVERS ........................... 16 of 20 129 124 PROVO R.-UTAH LAKE-JORDAN R. ................. 15 of 17 140 131 TOOELE VALLEY-VERNON CREEK ................... 3 of 4 140 130 NORTHEASTERN UINTAHS ......................... 6 of 10 116 114 DUCHESNE RIVER ............................... 11 of 13 139 135 PRICE-SAN RAFAEL ............................. 6 of 11 139 * DIRTY DEVIL .................................. 3 of 6 129 134 SOUTH EASTERN UTAH ........................... 3 of 6 179 158 UPPER SEVIER RIVER ........................... 12 of 17 159 138 SAN PITCH RIVER .............................. 5 of 11 * * LOWER SEVIER RIVER ........................... 1 of 3 * * BEAVER RIVER ................................. 2 of 2 158 149 ESCALANTE RIVER .............................. 3 of 4 128 125 SOUTHWESTERN UTAH ............................ 10 of 13 181 142 WASHINGTON NORTHERN PANHANDLE ........................... 10 of 10 90 82 SPOKANE ...................................... 10 of 10 93 81 UPPER COLUMBIA ............................... 5 of 6 93 79 CENTRAL COLUMBIA ............................. 7 of 8 86 86 UPPER YAKIMA ................................. 4 of 5 77 82 LOWER YAKIMA ................................. 7 of 9 96 84 LOWER SNAKE .................................. 20 of 22 103 95 LOWER COLUMBIA ............................... 17 of 22 94 79 SOUTH PUGET SOUND ............................ 7 of 10 93 84 CENTRAL PUGET SOUND .......................... 8 of 9 73 86 NORTH PUGET SOUND ............................ 8 of 12 79 83 OLYMPIC ...................................... 3 of 4 80 86 WYOMING SNAKE RIVER .................................. 19 of 20 113 105 MADISON-GALLATIN ............................. 5 of 5 127 111 YELLOWSTONE .................................. 13 of 14 112 107 WIND RIVER ................................... 10 of 12 100 89 BIGHORN BASIN ................................ 10 of 11 96 86 SHOSHONE RIVER ............................... 4 of 6 106 113 POWDER RIVER ................................. 6 of 7 95 87 TONGUE RIVER ................................. 6 of 7 85 79 BELLE FOURCHE ................................ 2 of 2 125 97 CHEYENNE RIVER BASIN ......................... 2 of 2 119 72 UPPER N. PLATTE .............................. 17 of 19 125 120 SWEETWATER ................................... 3 of 3 99 82 LOWER N. PLATTE .............................. 4 of 4 130 110 LARAMIE RIVER ................................ 7 of 7 127 120 S. PLATTE .................................... 2 of 3 123 118 LITTLE SNAKE RIVER ........................... 8 of 8 129 116 UPPER GREEN RIVER ............................ 13 of 14 101 98 LOWER GREEN RIVER ............................ 6 of 11 102 100 UPPER BEAR RIVER ............................. 7 of 10 113 111 ----------------------------------------------------------------------------- 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.