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San Juan Creek Flood Risk Management Feasibility Study
The San Juan Creek Flood Risk Management Feasibility Study is a joint study between the United States Army Corps of Engineers and the Orange County Flood Control District. The purpose of this feasibility study is to evaluate flood risk management alternative measures along the lower portions of San Juan, Trabuco, and Oso Creeks. The San Juan Creek Watershed encompasses approximately 176 square miles of southern Orange County and western Riverside County in southern California. The study is a spinoff of the earlier San Juan Creek Watershed Management study, with a focus on flood control in the lower portions of the watershed.
The study area extends along approximately 10.5 miles of San Juan Creek from the Pacific Ocean to the southern end of Ronald W. Casper’s Wilderness Park, along 9.5 miles of Trabuco Creek from its confluence with San Juan Creek to its confluence with Tijeras Creek and along 4.5 miles of Oso Creek from its confluence with Trabuco Creek to just north of Oso Parkway.
The planning objectives for the study are:
To reduce the risk of flood damages in lower portions of the watershed along San Juan, Oso and Trabuco Creeks
To address stream bank erosion and channel instability in the lower portions of San Juan, Trabuco and Oso Creeks.
To maintain habitat function and values in the study area to the extent practicable
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