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Lake Washington's basin was formed by glacial processes associated with the Puget lobe of the Cordilleran Ice Sheet during the Vashon Glaciation, likely through a combination of preferential erosion of weak rock and sediments by the glacier itself and by subglacial meltwater during the glacier's retreat.
Asphalt and sandbag revetment with a geotextile filter. A revetment in stream restoration, river engineering or coastal engineering is a facing of impact-resistant material (such as stone, concrete, sandbags, or wooden piles) applied to a bank or wall in order to absorb the energy of incoming water and protect it from erosion.
Erosion control is the practice of preventing or controlling wind or water erosion in agriculture, land development, coastal areas, river banks and construction. Effective erosion controls handle surface runoff and are important techniques in preventing water pollution , soil loss , wildlife habitat loss and human property loss.
North Cove is in the northwest corner of Washington's Pacific County, ... After years of "throwing money at the ocean" trying to control the area's erosion, the tribe is now working to relocate ...
The erratic lies in what is said to be the smallest King County park, 20 by 70 feet (6.1 m × 21.3 m) in extent, that barely contains the rock and sequoias. [18] The two lanes of Big Rock Road used to split into a wye around the rock, until a shopping center was built nearby in the 1990s. [17] [18
Glacial Lake Missoula broke through the ice dam many times, allowing a tremendous volume of water to rush across northern Idaho and into eastern Washington. [11] Such catastrophic floods raced across the southward-dipping plateau a number of times, etching the coulees which characterize this region, now known as the channeled scablands .
A ribbon lake is a long and very deep, finger-shaped lake, usually found in a glacial trough. [1] As such, a ribbon lake is one of a number of glacial landscapes, including arêtes, corries, rock lips, rock basins and terminal moraines. Such a lake's formation begins when a glacier moves over an area containing alternate bands of hard and soft ...
Riprap causes morphological changes in the riverbeds they surround. One such change is the reduction of sediment settlement in the river channel, which can lead to scouring of the river bed as well as coarser sediment particles.