Conowingo Dam has divided the Susquehanna River from the Chesapeake Bay since it was built in 1928 (http://en.wikipedia.org/wiki/Conowingo_Dam). For 84 years, silt and whatever else flows down the river has accumulated behind the dam. The Dam is due for re-licensing in 2014. The threat to the Bay is well understood, but remedies are difficult, expensive and have been consistently put off for years.
Each significant weather event leads to increased releases from higher flows and to reduce strains on the dam. That sends an assortment of toxins, nutrients and debris down the Bay. Those releases can cause health and safety risks to sailors and others who recreate on those waters in addition to damages to Bay resources including clams, oysters and crabs. The frequency of significant releases is increasing as the storage capacity of the dam decreases. Remedies are needed now not later…….