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Answer
Explanation
New York
Atlantic Ocean
Los Angeles
Pacific Ocean
Houston
The Buffalo Bayou salt front is usually placed at the I-610, which is within city limits. Also, Clear Lake is not a true lake but a saltwater bay that is part of Galveston Bay.
San Diego
Pacific Ocean
San Jose
San Francisco Bay
Jacksonville
Atlantic Ocean
San Francisco
Pacific Ocean
Seattle
Puget Sound
Boston
Atlantic Ocean
Baltimore
The lower end of the Patapsco River, where it meets Chesapeake Bay, is brackish.