American River Trees (ART), a grassroots organization based in Sacramento, arranged a walk Sunday morning to protest a U.S. Army Corps of Engineers’ (USACE) erosion project. The USACE project, which aims to alleviate flood risk, threatens the destruction of nearly 700 trees and miles of habitat in the American River Parkway, according to ART. The group walked during its protest a two-mile stretch of trail from the Kadema Drive River Access to Larchmont Community Park. ART says many trails, beaches and access to the river’s edge will be lost, and USACE hasn’t sufficiently looked into or incorporated less destructive alternatives. … The organization said flood risk is exaggerated as the stretch of river is relatively straight, has slower velocities than downstream sites, and seepage walls in reinforced levees are built to withstand water against them.