Mariners are warned that numerous uncharted piles, snags, pumps, and pipes, some submerged, may exist along edges of the waterway.
Numerous buoys and signs mark the wing dams, along the Sacramento River.  Mariners should never attempt to pass between the warning buoys and the shore.
The river bed at Gravel Pt., Ogden Bend, and Missouri Bend has shifted.  No recent depth information available.