Water, which is in rivers and bays, looks for the lowest point it can get to. That is why when you spill water it runs off the table. That and gravity. The water in rivers flows to bays for the same reason water falls from the table. Gravity is pushing it down and the water is looking for the lowest point.
Lowest spot as to sea level? Or lowest in terms of the globe north to south?
Goodness is like water to a Taoist; water always flows to the lowest point automatically; someone who is naturally good flows to the right decision automatically, without needing to think about it.
The water flows from the highest chamber to the lowest chamber. As the gate opens in the lowest chamber, the water level lowers to sea level, and the ship enters. The gate closes behind it, and water flows from the chamber above to the level of the next gate, and the process is repeated until the ship reaches the top level.
The lowest spot in Mississippi is the Gulf of Mexico coastline, which reaches sea level.
The lowest base level a stream may flow into is sea level in which it flows into the ocean.
Delaware
Water flows from a higher elevation to a lower elevation due to gravity. It seeks the lowest point possible as it moves downstream.
The Tyne River Tunnel is indeed built partly under water. The lowest spot in the tunnel is 85 feet below the high water mark of the river.
The river water flows into the sea.
The level of a body of water that a stream flows into is called the "base level." It represents the lowest point to which a stream can erode its channel. When a stream reaches its base level, it can no longer lower its bed through erosion, leading to sediment deposition instead. This base level can be influenced by factors such as sea level, dams, or geological uplift.
a river is a body of water that flows