Visit the Turners Falls Fishway from May 11 until June 16. Underwater viewing windows offer visitors of all ages a chance to see American shad, sea lamprey and other migratory fish during their upriver spring journey to spawn. Open Wednesday through Sunday, 9:00 am â€“ 5:00 pm from mid May to mid June, as well as on Monday, Memorial Day. Free admission, no reservations required. The Fishway is located on First Street, off Avenue A in Turners Falls, MA.