Suiattle River

hazards map

Mudflat (Wikipedia) Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least 127,921 km2 (49,391 sq mi) of the Earth’s surface. They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily.

Suiattle River (Wikipedia) The Suiattle River (/suːˈætəl/ soo-AT-əl) is a river in the northern Cascade Mountains of western Washington, United States. It is a tributary of the Sauk River and by extension the Skagit River. Its source is located between Suiattle Glacier and Honeycomb Glacier on Glacier Peak, at an elevation of around 7,000 ft (2,100 m) above sea level. It descends through a 60-mile (97 km) course, lying mainly within the Mount Baker–Snoqualmie National Forest. It meets the Sauk northeast of Darrington, Washington, at an elevation of 400 ft (120 m). Snowmelt from Chocolate and Dusty Glacier gives the river silty water, with a suspended load over twice that of the upper Sauk or adjacent White Chuck.