What happens to nearby streams and rivers when a tanker passes too quickly

Though hardly rekt compilation material, this footage of a feeder river turning into a roiling mess, due to a tanker going through St Lawrence seaway too fast, was good enough to get a captain in trouble and get authorities to enforce the speed limit.

This video was part of a series of videos studied and analyzed by the USCG to determine that the upriver vessels were traveling anywhere from 3 knots to 5 knots over the allowed 8 knot (land relative) upriver limit (10.4 knot water-relative limit) during the shipping season. Speed limits have now been re-enforced throughout the St Lawrence seaway, and the issues shown in this video have since subsided.