The Chesapeake Bay (Bio)

A meteorite struck offshore, generating a crater in the basement rock.

A volcano erupted, creating a large mountain.

A river eroded the land over millions of years.

An earthquake split the land into two parts.

Peak Ring

Inner Basin

Outer Rim

Central Uplift

A whirlpool caused by a collapsing coal mine

A volcanic eruption

A tornado over water

A landslide into a river

Water from the coast drained in, forming the Susquehanna river valley

The river valley was covered by glaciers

The river valley was formed by volcanic activity

The river valley was created by an earthquake

A semi-enclosed, tidal, coastal body of water open to the ocean in which fresh and salt water mix.

A large freshwater lake surrounded by mountains.

A river that flows only during the rainy season.

A man-made reservoir used for irrigation.

A semi-enclosed, tidal, coastal body of water where fresh and salt water mix.

A freshwater lake with no connection to the ocean.

A desert region with little water.

A mountain range with many rivers.

0 - 0.5 parts per thousand

5.1 - 7.5 parts per thousand

15.1 - 18.0 parts per thousand

24.1 - 27.0 parts per thousand

Overland flow

Filtration

Groundwater recharge

Evaporation

It supports a large human population, diverse aquatic species, and extensive shoreline.

It is the smallest estuary in North America.

It has no streams or creeks feeding into it.

It is located in the western United States.