https://www.usgs.gov/data/tidal-datums-tidal-range-and-nuisance-flooding-levels-chesapeake-bay-and-delaware-bay
This U.S. Geological Survey data release provides data on spatial variations in tidal datums, tidal range, and nuisance flooding in Chesapeake Bay and Delaware...
nuisance floodingtidaldatumsrangelevels