Irondequoit Bay State Marine Park is a 44acre state park and boat launch located in Monroe County, New York, north of the City of Rochester. The park is operated by the Town of Irondqeuoit and primarily facilitates fishing and boating access to Irondequoit Bay and Lake Ontario.Park descriptionIrondequoit Bay State Marine Park includes space and facilities for fishing, boating, geocaching, kayaking, and canoeing. The park is typically open daily from 7 a.m. until 11 p.m., except during the winter months (November 1 through March 31), when the park closes at 4 p.m. Monday through Thursday. The park's boat launch is open from 6 a.m. to 8 p.m., starting in late spring.