Chicago : Engineering and Contracting Pub. Co. · leaf 416
nceof 1.4 miles, and above this, on account ofits being more economical than excavatingthrough the bottom lands as originally pro-posed, the river side of the canal was formedby building a levee in the river with the ma-terial excavated in bringing the canal to therequired depth. As the excavation… … Fig. 5. The bottom lands are of an alluvial forma-tion, and as is usual along silt bearingstreams, are highest near the top of riverbank, sloping gradually from this point to thefoot of the hills. It is presumed that thecanal was located close to the foot of thehills for the purpose of reducing the…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
