Fish Passage Modification, Charles River Dam, Boston, Massachusetts, Feasibility (Section 1135) Report and Environmental Assessment
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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The purpose of this study is to conduct a feasibility investigation of restoring upstream and downstream fish passage at the Charles, River Dam, and to modify project structures and operations for the purpose of restoring fish passage to a modern historic condition. Fish passage at the dam occurs primarily through a fish ladder and navigation locks. However, fish passage through the ladder is reduced by damaged or missing equipment, ineffective maintenance, and debris accumulation throughout the facility, and the navigation locks are limited by the irregular and infrequent locking operations that occur during late winter and spring. This report examines alternatives to accomplish these goals and compares them to existing conditions. However, the MDC does not endorse full restoration of the fish ladder nor the proposed formal protocol of locking fish. The investigation has determined that existing fish passage problems are primarily the result of ineffective maintenance of equipment and infrequent debris collection and disposal. This report recommends that Federal involvement to restore fish passage at the Charles River Dam under Section 1135 should not be continued.
- Civil Engineering