NOAA ENCŪ NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION US4MI2OQ - LAKE MICHIGAN - SCOTT POINT TO ROCK RIVER, MI INDEX: NOTE A AIDS TO NAVIGATION SUPPLEMENTAL INFORMATION CAUTION - TEMPORARY CHANGES CAUTION - USE OF RADIO SIGNALS (LIMITATIONS) WARNING - PRUDENT MARINER CAUTION - LOW WATER DATUM AUTHORITIES POLLUTION REPORTS NOAA WEATHER RADIO BROADCASTS RADAR REFLECTORS SAILING COURSES CAUTION - FISHING STRUCTURES CAUTION - SUBMARINE PIPELINES AND CABLES WATER LEVELS, CURRENTS, AND TIDES PLANE OF REFERENCE OF THIS CHART ADDITIONAL INFORMATION COMMENTS REQUESTED CAUTION - QUALITY OF BATHYMETRIC DATA NOTES: NOTE A Navigation regulations are published in Chapter 2, U.S. Coast Pilot 6. Additions or revisions to Chapter 2 are published in the Notice to Mariners. Information concerning the regulations may be obtained at the Office of the Commander, 9th Coast Guard District in Cleveland, Ohio, or at the Office of the District Engineer, Corps of Engineers in Detroit, Michigan. Refer to charted regulation section numbers. AIDS TO NAVIGATION Consult U.S Coast Guard Light List for supplemental information concerning aids to navigation. SUPPLEMENTAL INFORMATION Consult U.S. Coast Pilot 6 for important supplemental information. CAUTION - TEMPORARY CHANGES Temporary changes or defects in aids to navigation are not indicated. See Local Notice to Mariners. During some winter months or when endangered by ice, certain aids to navigation are replaced by other types or removed. For details see U.S. Coast Guard Light List. CAUTION - USE OF RADIO SIGNALS (LIMITATIONS) Limitations on the use of radio signals as aids to marine navigation can be found in the U.S. Coast Guard Light Lists and National-Geospatial-Intelligence Agency Publication 117. Radio direction-finder bearings to commercial broadcasting stations are subject to error and should be used with caution. WARNING - PRUDENT MARINER The prudent mariner will not rely solely on any single aid to navigation, particularly on floating aids. See U.S. Coast Guard Light List and U.S. Coast Pilot for details. CAUTION - LOW WATER DATUM Due to periodic high water conditions in the Great Lakes, some features charted as visible at Low Water Datum may be submerged, particularly in the near shore areas. Mariners should proceed with caution. AUTHORITIES Hydrography and topography by the National Ocean Service, Coast Survey, with additional data from the Corps of Engineers, Geological survey, and U.S. Coast Guard. POLLUTION REPORTS Report all spills of oil and hazardous substances to the National Response Center via 1-800-424-8802 (toll free), or to the nearest U.S. Coast Guard facility if telephone communication is impossible (33 CFR 153). NOAA WEATHER RADIO BROADCASTS The NOAA Weather Radio stations listed below provide continuous weather broadcasts. The reception range is typically 20 to 40 nautical miles from the antenna site, but can be as much as 100 nautical miles for stations at high elevations. Manistique, MI WNG-684 162.525 MHz Newberry, MI WNG-576 162.450 MHz Petoskey, MI WNG-572 162.475 MHz RADAR REFLECTORS Radar reflectors have been placed on many floating aids to navigation. Individual radar reflector identification on these aids has been omitted from this chart. SAILING COURSES Sailing courses are recommended by the Lake Carriers Association and the Chamber of Marine Commerce as voluntary guidance for course to steer with navigation safety and Collision Regulations always taking priority. CAUTION - FISHING STRUCTURES Mariners are warned that numerous uncharted stakes and fishing structures, some submerged, may exist in the area of this chart. Such structures are not charted unless known to be permanent. CAUTION - SUBMARINE PIPELINES AND CABLES Additional uncharted submarine pipelines and submarine cables may exist within the area of this chart. Not all submarine pipelines and submarine cables are required to be buried, and those that were originally buried may have become exposed. Mariners should use extreme caution when operating vessels in depths of water comparable to their draft in areas where pipelines and cables may exists, and when anchoring, dragging, or trawling. Covered wells may be marked by lighted or unlighted buoys. WATER LEVELS, CURRENTS, AND TIDES Real-time water levels, tide predictions, and tidal current predictions are available on the internet from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS) at https://tidesandcurrents.noaa.gov/water_level_info.html and https://tidesandcurrents.noaa.gov/currents_info.html. PLANE OF REFERENCE OF THIS CHART Plane of Reference of this chart (Low Water Datum) 176.0 m/ 577.5 ft. Referred to mean water level at Rimouski, Quebec, International Great Lakes Datum (1985). ADDITIONAL INFORMATION Additional information can be obtained at www.nauticalcharts.noaa.gov COMMENTS REQUESTED NOAA encourages users to submit inquiries, discrepancies, or comments about this chart via NOAA's ASSIST tool at https://www.nauticalcharts.noaa.gov/customer-service/assist/. CAUTION - QUALITY OF BATHYMETRIC DATA The areas represented by the object M_QUAL (Quality of data) are approximate due to generalizing for clarity. Caution is advised, particularly for nearshore navigation or voyage planning. M_QUAL represents areas of uniform quality of bathymetric data. The CATZOC (Category of zone of confidence in data) attribute of M_QUAL provides an assessment of the overall zone of confidence. END OF FILE