Watershed

Side view illustration of cowboy on horse

Side view of male pronghorn

Illustration of a bay with barrier island

Comparison of a coastline with high vs low marsh

Illustration of a 3D coastline showing mountains to open ocean

Illustration of a 3D coastline with mountains to open ocean and upwelling

Coastline 3D: mountains, dam, island

Illustration of river base with watershed and modified coastline

Southwestern Willow Flycatcher flying

Illustration of estuary base with rocky catchment and salt wedge

Cross-section of Lami Town in Fiji

A downward pointing yellow arrow labeled "sewage" represents the excess nutrients and pollution from human waste systems that runoff into the watershed

Shrub-like Juniper tree

Man tubing on river

Cottonwood tree

Illustration of a volcanic island with barrier reef

Illustration of volcanic islands with reefs

Illustration of river base watershed with mountains

River 3D: watershed with mountains and water table

Red rock formation near Sedona, Arizona

Illustration map of Chincoteague Bay watershed in Maryland and Virginia, USA

Illustration map of Chincoteague Bay watershed in Maryland and Virginia, USA

Illustration map of Assawoman Bay watershed in Maryland, USA

Detailed illustration of Assawoman Bay watershed in Maryland, USA

Illustration map of Assawoman Bay watershed in Maryland, USA

Illustration locator map of Assawoman Bay watershed in Maryland, USA

Illustration map of Chester River in Maryland, USA

Illustration map of Choptank River in Maryland, USA

Illustration map of Choptank River in Maryland, USA

Illustration locator map of Choptank River watershed in Maryland, USA

Illustration map of Isle of Wight watershed in Maryland, USA

Illustration map of Isle of Wight watershed in Maryland, USA

Illustration locator map of Isle of Wight watershed in Maryland, USA

Illustration locator map of Lower Eastern Shore watershed in Maryland, USA

Illustration locator map of Lower Western Shore watershed in Maryland, USA

Illustration map of Newport Bay watershed in Maryland, USA

Illustration map of Newport Bay watershed in Maryland, USA

Illustration locator map of Newport Bay watershed in Maryland, USA

Illustration locator map of Patapsco and Back Rivers watershed in Maryland, USA

Illustration map of Patuxent River in Maryland, USA