Onondaga Lake Access provides multiple public boat launch options for recreational boating and fishing, including a concrete ramp at 280 Restoration Way (off Route 690) with parking for 30 cars and trailers, plus a fishing platform.

Additional launches are available at Onondaga Lake Park Marina with a concrete ramp and 40-car parking capacity (fee required), and at Seneca River Hayes Road in Lysander with more limited facilities.

The lake is accessible year-round through Onondaga Lake Park's extensive trail system and shoreline access along the eastern shore.