ABSTRACT

For a solution to the Eurasian watermilfoil problem in Kitty Hawk Bay, considered four different types of action include herbicide application, salinity control, mechanical control, and do-nothing. Kitty Hawk Bay is a protected body of water with an irregular shoreline and numerous marsh islands. There is no good estimate on the cost of establishing such salt-water overwash areas. The Norfolk District, US Army Corps of Engineers and the city of Virginia Beach were consulted concerning the salt-water pumping program into Back Bay, Va. The most feasible method of mechanical control of Eurasian water milfoil appears to be mowing and the use of water jets to blow the plants out of the substrata. In order to raise the salinity of Currituck Sound to the minimal level for milfoil control would require the influx of 56.5 billion gal of seawater. The "do-nothing" alternative is difficult to evaluate because there seems to be no certainty as to the future of the milfoil problem.