the St. Clair Parkway hugs the shoreline of the St. Clair River. Each of the settlements along this portion of the parkway are centered at the concession roads that funneled inland settlers and goods to and from the river. The Sarnia Subdivision, at one time the principal means of communication between those settlements, roughly parallels the parkway to the east. It is presently a CSX railway spur between Chatham and Sarnia. Several petrochemical plants line the route, particularly towards Sarnia. This area has been known since the 1940s as "Chemical Valley". After passing through Port Lambton, the St. Clair Parkway crosses the W. Darcy McKeough Floodway, a channel constructed in 1984 to protect Wallaceburg from flooding. It travels through Sombra, providing access to the Sombra–Marine City (Bluewater) Ferry. Between Sombra and Courtright, the CF Industries nitrogen chemical plant as well as the decommissioned Lambton Generating Station rise above the flat farmland that abuts the parkway. Beginning at Courtright, the terminus of the former Canada Southern Railroad, the parkway moves slightly inland from the shoreline and becomes consistently lined by residential properties. It crosses Baby Creek and travels through Mooretown, with the Sarnia Subdivision briefly running alongside the parkway north of the village. Next it bisects Corunna, a planned town intended to be the capital of the united Upper and Lower Canada when it was established in 1823. North of Corunna, the St. Clair Parkway shifts back to the riverfront and crosses Talfourd Creek in front of the Shell Corunna Refinery. At LaSalle Line, the route leaves the municipality of St. Clair and enters Sarnia as well as the community of Froomfield. A final stretch of housing lines the inland side of the parkway before it curves inland around the Suncor Sarnia Refinery and into Sarnia's industrial area. The parkway officially ends at the southern edge of the Suncor refinery, where it becomes River Road. River Road, in turn, becomes Vidal Street at the overpass of the Sarnia Subdivision. There are several public parks located along the route. Brander Park is bisected by the parkway at Baby Point. It was named in honour of Alan P. Brander, former Wallaceburg mayor whom envisioned the parkway in the 1950s. Cathcart Campground, formerly Clay Creek, is located between Sombra and Courtright, as is Willow Grove. In addition to these three parks, which formed the basis for the St. Clair Parkway in 1957, are nine