Conowingo Reservoir is a 15-mile stretch of the Susquehanna River that crosses the MD/PA border. Conowingo is a unique fishery since flow rates from either dam can have noticeable effects on water levels, current, and fish activity. Putting the pieces together can often lead to very impressive results with both largemouth and smallmouth. It has been the site of many of the most productive FOBA tournaments ever for both numbers and size. Conowingo is one of the "must fish" events on the FOBA tournament trail.