The Spring Rafting Season in Zoar Valley opens in March with the spring runoff and lasts until late May or early June as the water level becomes too low. The best white water action can normally be had from right now through April, depending of course on the amount of rainfall. May, as the water level begins to recede, can generally be counted on to provide the more scenic, warmer and serene trips. May showers, however, can bring about a sudden rise in water levels. Reservations are required.