McKay Bay is the name given to the northeastern corner of Tampa Bay, a body of water in Tampa, Florida. The McKay Bay Greenway runs through the area on the east side of McKay Bay and connects to the Tampa Bypass Canal.McKay Bay Nature Park is located at 685 North 34th Street in Tampa. The area also includes the McKay Bay Resource Recovery Plant, a power plant fueled with refuse. The lake was man-made and was once used as a cooling pond for a city incinerator. McKay Bay is at the northeast corner of Hillsborough Bay, which is the name given to the portion of Tampa Bay on the east side of Tampa's Interbay Peninsula.
The Lake is undredged and shallow. It is surrounded by mangrove and salt marsh wetlands. At low tide, the exposed area is a feeding ground for migratory waterfowl, shorebirds and wading birds. Avian residents include the American avocet, black-necked stilt, black skimmer, white pelican, Northern shoveler, canvasback, green wing teal, ruddy duck and glossy ibis.