Evaluation of Dredging and Operational Changes at a Major Flood Control Reservoir to Accommodate Extreme Flood Events
Recent increases in rainfall frequency and magnitude have produced extreme flooding in the Midwestern United States, motivating stakeholders to consider repurposing existing flood control reservoirs. Coralville Reservoir, operated by the United States Army Corps of Engineers, provides protection from annual spring flooding for many agricultural communities. Following devastating floods in 2008, some downstream communities have advocated a shift in focus from seasonal flood control to attenuation of extreme flood events. The present study assesses management alternatives that may increase the ability of Coralville Reservoir to attenuate extreme flood events. Considerations include dredging to increase reservoir capacity, alteration of reservoir operations to increase storage capacity during annual peak flood season, and the influence of continued reservoir sedimentation.
Abstract The land readjustment (LR) method has been compared to traditional urban renewal models’ substantial potential in fulfilling specific functions, e.g., land assembly, self-finance, the protection of social capital, and results in a certain time. However, there is limited information on the use of LR in urban renewal areas. For example, it is not known how suitable LR is for renewal of inner city areas or whether LR can be a remedy to the problems in urban renewal. This paper answers these questions by focusing on Turkey. The paper is based on discussion and comparison of the existing approaches in fulfilling specific functions in urban renewal, and the compatibility and contribution of LR to the framework. The result reveals that a private initiative (landowner associations or cooperatives) LR model can be a suitable instrument for urban renewal in Turkey.