Upper Susquehanna River Basin Comprehensive Flood Damage Reduction Feasibility Study
Within New York, the Upper Susquehanna River Basin (USRB), excluding the Chemung River watershed, drains approximately 4,520 square miles in the south central part of the state. The United States Army Corps of Engineers (USACE) has constructed 20 flood risk management projects in the USRB dating back to 1938.
USACE and New York State Department of Environmental Conservation plan to evaluate many of these projects under USACE’s feasibility study process. This feasibility study will identify the current risk for flooding and propose ways to minimize the impact from flood events, preliminarily determine environmental and economic impact from various levels of flooding, and suggest structural and non-structural alternatives that could help minimize damage to life and property.
The feasibility study will involve updating existing hydrologic and hydraulic models of the USRB, defining levels of protection at the existing levee/floodwall projects, and determine preliminary economic benefits for all of the existing levees/floodwalls.
One flood risk management project location will be chosen by the Project Delivery Team and formulation will begin to develop concept design alternatives involving varying levels of protection. Evaluation of these alternatives will be done using Hydrologic Engineering Center Flood Damage Assessment model and a comparison will follow to determine an alternative that yields the greatest National Economic Development benefits.