Offshore Sill Type Breakwater, Antrim MI coast – Coved Beach: The sill is a row of boulders in then 20 inches of water along 580.5 OHWM. Laid end-to-end, 6-9 inches apart, granite boulders weigh 1–2 ton. Riprap along low bluff shields trees and features. Sand filled-in right after the Aug. 30 build. A Nov. 1 gale confirmed a degree of success; a later storm moved sand from south to north. We’ll see what winter brings. Read more 2020 Autumn TNN News
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