Inlet Locks Lock (water navigation)
inlet lock (left) feeder canal, regulates water potomac river c&o canal. lift lock (right) allows boats continue canal in normal fashion.
an inlet lock regulate water feeder canal or river main canal. in cases, inlet lock may double lift lock allow boats river slackwater. note in example on right, feeder canal george washington s little falls skirting canal part of potomac company s canals, later re-purposed feeder canal chesapeake , ohio canal.
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