Concern That Sea-Level Rise Will Flood Drinking-Water Intakes in Philadelphia, Southern NJ

March 5, 2025 | njspotlightnews.org

Fears that seawater may one day flood drinking-water intakes serving millions of people in the Philadelphia region and southern New Jersey rose again when an interstate regulator said a current program to stop salty water moving up the Delaware River might be overwhelmed by sea-level rise and drought.

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NJ SEED: US EPA says North America is still adjusting to the loss of ice after the last ice age. Atlantic costal lands are sinking in some areas and rising in others in what scientists call "post-glacial rebound." Rising sea levels are pushing sea water further up the Delaware River threatening the permanent destruction of fresh water aquifers on both sides of the river. Decades ago proposals to create a huge reservoir at the north end of the River would have provided additional fresh water releases to resist the intrusion caused by rising sea levels.