There are many documented harms of inter-basin transfers, including:● Reduced flow rates in the donor basin: Decreased supply in the donor basin can result in changes to a waterbody’s natural flow patterns, with impacts to native vegetation and aquatic habitats, including in wetlands. This loss in biodiversity can expose a waterbody to an influx of invasive species, which can further harm local habitats. The Delaware River Basin is a sanctuary to rare and endemic species of plants and animals including bears, bald eagles, native trout, freshwater mussels and eels, and endangered timber rattlesnakes, all of which would be threatened by shifts in the watershed’s freshwater flow patterns.● Reduced ability of the donor water body to assimilate pollutants: A waterbody with less supply has a decreased ability to dilute pollutants and could harm aquatic species due to heightened toxic exposure.● Unsustainable development of a limited resource: Inter-basin transfers put donor waterbodies that people depend on for drinking water at risk and can enable development in regions that do not have readily available water. The Delaware River Basin is the drinking water source for over 17 million Americans, including residents of Philadelphia and New York City. Removing water from the basin would threaten the region’s water security.
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