River and reservoir anglers are very familiar with the scenario — no running water, and fish are more inactive. Once the dam opens up and the current starts to flow, fish congregate in certain areas and become more active. Wired2Fish staffers use a small river in late summer to reveal what occurs when a dam opens up and current flow and water levels increase. What strikes us is the co-mingling of so many species in a small area — both predator and prey. Perhaps it's the quest for well-oxygenated water, cooler water, the release of food or a combination of each. In any case, this 'natures aquarium' outing reinforces the point that overall fish activity level increases with current.