My social media flow this calendar week has been total of links to an former poster from the Oregon Department of Geology as well as Mineral Industries. The poster depicts the historical channels of the Willamette River, inwards Oregon.
The poster was created past times the Oregon Department of Geology as well as Mineral Industries in 2013 to exhibit the dynamic movements of the Willamette River over thousands of years. The information for the river map is from a lidar derived digital come about model of the Willamette River. It displays a l pes come about make alongside higher elevations colored nighttime bluish as well as lower elevations shown inwards white.
The thought for mapping historical river channels goes dorsum at to the lowest degree every bit far every bit the early on 20th Century. In 1944 Harold Fisk published 15 maps showing the historical variety out of the Mississippi River inwards a study entitled 'Geological Investigation of the Alluvial Valley of the Lower Mississippi River'. The study past times Harold Fisk (Geology Professor at LSU) was created for the Army Corps of Engineers.
The xv maps inwards the study exhibit twenty stages of the variety out of the Mississippi over 2000 years. Some Bits has taken Fisk's 15 maps as well as overlain them on an interactive map. This allows yous to meander downwards the Mississippi on the map viewing all of Fisk's maps ane afterwards the other. It too allows yous to zoom inwards as well as out on details inwards Fisk's beautiful Mississippi maps.
