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190:, changes in wind direction and force create water level changes as great as 11 feet (3.4 m) at Port Colborne. Lock 8 controls the water level in the canal, keeping it independent of the fluctuations of Lake Erie, but allows ships to enter Lake Erie regardless of its level.
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T.J. O’Brien Lock and Dam: A control lock between Lake
Michigan and the Illinois Waterway. Note that there is little or no elevation change (aka: head) between the upper and lower ends of the lock.
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where it is used to control seawater entering into a body of fresh water.
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is a guard lock. Due to the large expanse of shallow water in
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is a guard lock that controls the outflow of water from
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159:The T. J. O’Brien Lock and Dam at
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174:Lock 8 near the south end of the
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228:Locks (water navigation)
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16:Type of canal lock
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208:"TJ OBrien"
194:References
137:canal lock
127:guard lock
69:newspapers
188:Lake Erie
167:into the
141:tide lock
132:stop lock
222:Category
147:Examples
99:May 2024
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