CA373093 - NIAGARA RIVER TO/ LONG POINT
Canadian Hydrographic Service
Central and Arctic Region 

GAS PIPELINES and WELLHEADS
High pressure Natural Gas pipelines lie on the lake bottom with wellheads standing 
1.5 metres above the lakebed.  Damage to these installations can result in an extremely 
dangerous situation.  Gas well activities are continuous and as a result, the newest 
installations may not be shown or may vary between nautical chart editions.

DRILLING TOWERS
Mariners are advised that oil and gas drilling towers are temporarily established 
in various parts of Lake Erie. These towers exhibit a quick-flashing white light 
and are equipped with an automatic fog signal, sounding one blast of 2 seconds 
duration followed by 18 seconds silence.

CABLES
The symbols for submarine and overhead cables do not differentiate between cables conducting electric power, often at high voltages, and other types of utility cables. Mariners are advised to exercise caution when passing under all overhead cables and to avoid anchoring or conducting seabed operations in the vicinity of submarine cables. The clearance of an overhead cable may differ from its charted value due to changes in atmospheric conditions, water levels and other factors. For additional information, consult Notice No.16 in the Notices to Mariners, Annual Edition and the appropriate volume of CHS Sailing Directions.

ST. LAWRENCE SEAWAY
For information regarding lock data, limiting vessel dimensions and regulations 
governing the transit of vessels in the St. Lawrence Seaway between the Port of 
Montral and Lake Erie, refer to the Seaway Handbook; a current copy of this 
publication must be carried on board all vessels transiting the Seaway and may be 
obtained from the Head Office of the St. Lawrence Seaway Managament Corporation, 
Cornwall.

AIDS TO NAVIGATION
For complete details of aids to navigation, the larger scale charts and List of Lights, Buoys and Fog Signals must be consulted. 

COURSE
The recommended courses have been adopted by the Lake Carriers' Association (U.S.A) and the Chamber of Marine Commerce (Canada)

 Fisheries and Oceans Canada 2020. Published by the Canadian Hydrographic Service. A licence is required from the Canadian Hydrographic Service (www.charts.gc.ca) to reproduce or distribute this work.