While the entire tidal river is part of the estuary, salinity levels vary from the Delaware Bay (saltwater) to Wilmington, Del. (brackish) to Philadelphia, Pa. and Trenton, N.J. (mostly freshwater).
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The waters of the Inland Bays and Delaware Bay may contain organisms that could be harmful to one's health, particularly for persons with certain medical conditions or compromised immune systems. Swimming could result in an increased risk of rashes, infections or gastrointestinal distress.
The Bay supports the world's largest freshwater port system, approximately 3,000 vessels a year, and is the largest receiving center for crude oil, steel, paper, and meat imports. Fort Delaware is on the National Register of Historic Places.
Swimming in areas of the river outside the life guarded beaches is permitted, but not recommended. Strong currents, sharp drop-offs, and constantly changing river conditions make many areas unsafe for swimming. Wearing a properly fitting life jacket is strongly recommended when swimming.
While the entire tidal river is part of the estuary, salinity levels vary from the Delaware Bay (saltwater) to Wilmington, Del. (brackish) to Philadelphia, Pa. and Trenton, N.J. (mostly freshwater).
Vibrio are bacteria that occur naturally in brackish waters such as the Delaware Bay, the Inland Bays and tributaries, especially during warm weather months.
For swimming, walking, playing, reading or snoozing on the beach, the Delaware Bay's beaches strongly rival any ocean beach. Here you'll find quiet, beautiful, and uncrowded beaches.
The waters of the Inland Bays and Delaware Bay may contain organisms that could be harmful to one's health, particularly for persons with certain medical conditions or compromised immune systems. Swimming could result in an increased risk of rashes, infections or gastrointestinal distress.
The softest waters occur in parts of New England, South Atlantic-Gulf, Pacific Northwest, and Hawaii regions. Moderately hard waters are common in many of the rivers of the Tennessee, Great Lakes, and Alaska regions.
On March 24, 2023, the Trinseo Altuglas chemical plant in Bristol, Pennsylvania in the United States had an equipment failure that resulted in a leak of between 8,100 and 12,000 gallons of butyl acetate, ethyl acetate, and methyl methacrylate into Otter Creek, a tributary of the Delaware River.
On March 24, 2023, the Trinseo Altuglas chemical plant in Bristol, Pennsylvania in the United States had an equipment failure that resulted in a leak of between 8,100 and 12,000 gallons of butyl acetate, ethyl acetate, and methyl methacrylate into Otter Creek, a tributary of the Delaware River.
Delaware Water Gapformed through a process of headward erosion and stream capture. Deformation of the bedrock during Appalachian mountain-building episodes hundreds of millions of years ago created an area of structural weakness in the rock.