Abstract
Abstract The nation's shorelines are being eroded by high winds and waves. Nonfederal interests have traditionally received federal help in the form of cost sharing for protective structures. This article describes, compares, and evaluates existing and alternative cost‐sharing rules for shoreline protection on the basis of economic efficiency. Both engineering and management techniques are examined for beach erosion, hurricane, and emergency coastal flood protection. The present cost‐sharing system appears to bias local interests to choose (1) costly techniques of protection, e.g., engineering rather than management techniques, and under certain conditions (2) protective structures overbuilt in terms of the efficient scale. Conclusions are that these biases could be reduced if all engineering and management techniques for reducing shoreline damages were subject to the same percentage cost‐sharing rules.
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