Aa Aa Aa Estuaries are commonly described as semi-enclosed bodies of water ... are formed in high river discharge regions where the valley is presently not drowned by the sea.

Paleogeographic reconstructions—essentially ancient “maps of the past”—further illustrated how mountain-building episodes, ...

But while the three-year deal is helping to save water in the river's reservoirs, some people in the Imperial Valley say they ...

The Delaware River Basin Commission says the current plan to boost downstream flows may not be enough to repel a “salt front” ...

Estuaries can also be found where the river meets the sea. Estuaries are tidal and so contain both salt water and fresh water. Mudflats often form around estuaries.

Lake Shasta waters swelled after heavy winter rains from an atmospheric river. Here's how much rain fell and how many feet the lake grew.