Navigable Area2016W00449MaineMaine CoastlineSaco River100002016-05-192016-05-262016-01-01ESD-AHB-18Maine Coastal Mapping Initiative,Kerby DobbsAtlantic Hydrographic BranchmetersNorth American Datum 1983Mean Lower Low WaterDiscrete ZoningProjected UTM 192018-10-242019-04-12Atlantic Hydrographic BranchKerby DobbsContractorMaine Coastal ProgramThis survey was conducted for seafloor mapping purposes.There were no products created for this survey.Soundings were reduced to Mean Lower Low Water (MLLW) using predicted tides from NWLON reference station 8418150 Portland, ME, reference station 841606 Camp Ellis, ME, reference station 8418828, Biddeford, ME. Tide zones were provided by CO-OPS from the survey of this area. The zoned file, MCMICORP_modified.zdf, is in the submitted data files. All survey systems and methods utilized during this survey were as described in 2016 Descriptive Report of Seafloor Mapping – Federal Navigation Channel of Saco River, Biddeford/Saco to Camp Ellis, Maine.One DTON was submitted to NOAA Office of Coast Survey Marine Chart Division during office processing. The DTON was a 12 ft. shoal sounding that identified significant shoaling over the charted 16ft sounding. Maine Coastal Mapping Initiative This survey does meet charting specifications and is adequate to supersede prior data.This survey will be used to update NOAA navigational products where possible.