Hydraulic Investigation for the Construction of Artificial Islands in Peoria Lake

摘要

The report summarizes the results of a project designed to conduct the initial hydraulic analyses on the feasibility of building islands from dredged material in Peoria Lake. The study makes recommendations on the type, size, number, and locations of islands to facilitate their construction as a rehabilitation measure for the lake. This is the first time this kind of project has been proposed for an environment where a large river flows through the middle of a lake and the sediment in the lake is primarily silt and clay. Project implementation would require detailed hydraulic and engineering analyses not within the scope of the work. Antecedent work by the Illinois State Water Survey demonstrated the seriousness of the sedimentation problem in Peoria Lake and identified the creation of islands with selectively dredged sediments as a component of a set of recommended alternatives. Properly designed and located islands are recognized as a way to tremendously enhance the environmental quality of the Peoria Lake and to contribute heavily to its rehabilitation and management.