menu. The highway had flooded after heavy rains caused the Skookumchuck River to rise about its northern banks. On Monday, the Washington State Department of Natural Resources issued a landslide advisory around the Puget Sound area and Olympic Peninsula, including Olympia, Tacoma and Seattle. On Oct. 11, 2009, a massive landslide in the Nile Valley of Yakima County demolished a half mile of state Route 410 and redirected the flow of the Naches River. Forecasters say the rains should subside over. A landslide is blocking the roadway in the 2200. Original Story -- Release Date:MARCH 16, 2015, One Year Later The Oso Landslide in Washington. There are steps that can be taken to live more securely with our states landslide risk, DNR advises. Steve Bloom/The Olympian via AP A landslide is the movement of rock, soil and debris down a hillside or slope. Creep is indicated by curved tree trunks, bent fences or retaining walls, tilted poles or fences, and small soil ripples or ridges. Flows are generally a slurry mixture of water, soil, rock and (or) debris that moves rapidly downslope. Share sensitive information only on official, secure websites. Deep-seated landslides can cover large areas and devastate infrastructure and housing developments. The USGS presently operates eight streamgages along the Stillaguamish River, with two being permanent and six as rapid-deployment gages. Studies indicate that slope failure occurred in two stages over the course of about 1 minute. The USGS has been conducting field work, soils laboratory testing, and additional analyses to identify the likely causes of the large mobility of the Oso landslide. A volcanic eruption can rapidly melt snow and ice, causing a deluge of rock, soil, ash, and water that accelerates down the slopes of a volcano, devastating anything in its path. These surveys were performed at irregular intervals between July 1, 2014 and July 7, 2015. In fact, precipitation in the area during February and March of 2014 was 150 to 200 percent of the long-term average. A landslide susceptibility map is planned to be released later this year to identify areas where small landslides may happen in the future. Other areas saw nearly half of the rain they would expect to see for January in one day. Storm causes flooding and landslides and shuts roads in Washington and A man wades through rising water from the nearby Skookumchuck River to take a photo in the town of Bucoda, Wash., Friday, as area rivers and snow runoff begin to accelerate flooding in the south sound. British Columbia and Washington reeling from flooding and landslides Puget Sound landslides - Washington State Department of Ecology A lock () or https:// means youve safely connected to the .gov website. Reggie Brown, of Centralia, carries his daughter, Ocean, 4, on his shoulders as he walks through the floodwaters on Highway 507 with his wife, Jonell Brown, on Friday in Centralia, Wash. Forecasters say the rains should subside over the weekend but landslides will continue to be a risk into Saturday as soils remain saturated. She won the jackpot. The Washington Geological Survey, a division of the Washington State Department of Natural Resources, published a new inventory of known landslides in the western two-thirds of King County today.
