Which bay is located 27 miles southwest of Oswego with depths from 18 to 48 feet generally 0.2 to 0.4 mile from the shore?

The correct choice identifies Sodus Bay, which is known for its location and depth characteristics. Sodus Bay is situated approximately 27 miles southwest of Oswego and features water depths that vary from 18 to 48 feet, particularly within the proximity of 0.2 to 0.4 mile from the shoreline. These specific depth ranges are significant for navigation, fishing, and recreational activities, making Sodus Bay a notable location on Lake Ontario.

Port Bay, Blind Sodus Bay, and Black River Bay, while all being bays in the region, do not match the specific measurements and location described in the question. Sodus Bay’s distinctive depth profile and geographic positioning are fundamental to why it is the correct answer. Recognizing these geographic details is essential for understanding local knowledge related to Lake Ontario and its various bays.