Patapsco River Bloede's Dam leaves Daniels Dam, upstream, as the last remaining dam along the mainstem Patapsco River. Removal of Bloede's Dam in September, 2018 opened up of the Patapsco River watershed which will potentially restore spawning runs of at least six species of native anadromous fish: alewife ("Alosa pseudoharengus"), blueback herring ("Alosa aestivalis"), American shad ("Alosa sapidissima"), hickory shad ("Alosa mediocris"), striped bass ("Morone saxatilis"), sea lamprey ("Petromyzon marinus"), as only one species, sea lamprey, were found using the Bloede's Dam fish ladder in 2012. One catadromous species would likely also benefit, the American eel ("Anguilla rostrata"), a fish species which
Coonamesset River while environmental awareness has increased, bringing the conservation goal to the fore. While the Coonamessett maintained a healthy herring run for many years alongside Cranberry cultivation, in recent years the herring run has undergone a massive decline, following a similar decrease across New England which has been widely attributed to at-sea factors external to the rivers. In 2004, fish counters saw only 640 fish and the only about 2000 herring returned to spawn. Concern over the herring run and the disappearance of sea run trout has led to a consensus in the Town for better protection and improvement of the