Sediment build up deters tidal flows.
Tidal flows are changed by various rates of river and stream sedimentation accumulations leading to excess.
River and stream flows at head of tides are reaching a point of mankind unconcern to a point of lack of knowledge or understanding of impacts.
Levees are being nature tested by beds of rivers rising due to sediment build up.
It is this lack of attention that will only escalate until there is a catastrophe or two. We’ve already experienced one – the Josi-Schwind Wilson River- breach.
State and federal agencies have in essence deterred management of river and stream beds.
This action is supported by the keep it “al naturel” peoples. Yet FEMA has encouraged building up our levees two feet above mean high river. At risk are loss of highly productive lands, major levee breaks, and serious property divisions by meandering rivers and streams.
Also at risk are estuarine water qualities wherein brackish (ocean water mixes) with loss of values including oxygenation and temperature. This “al naturel” desire creates flag lots, loss of highly productive and limited food resource lands, including loss of riparian values, and increased sedimentation on its journey to the sea.
This statement is best supported by the Wilson River Loop Road aqueduct bridge system wherein the Wilson River has been telling us where it will meander on a later permanent basis by the “perched” Wilson River elevation, higher than the adjacent Tillamook basin.
Many Wilson River waters drain toward and into the Hoquarton Slough to later exit through Tillamook Bay eventually to the ocean, as confirmed by recent hydrologic studies.
“Hee Hawe” sedimentation concerns and live with a disastrous legacy of mankind and salmonid loses, not if but when.