Often real estate websites have local history. I found more West Rouge and Port Union history from a few real estate sites when I tried searching today.

West Rouge

West Rouge was primarily farmland in 1926, when real estate developer Cecil White created the “Rouge Hills” subdivision. This development was intended to be a unique summer playground, with grand country estates spread out along the Rouge River. There were even plans for an elaborate canal system and private boathouses to service these estates.

“Rouge Hills” was never completed, however a few of the cottages on Rouge Hills Drive and Ridgewood Road are legacies of this subdivision. Year-round residential development of the West Rouge neighbourhood began in the 1940s, with individual lots being purchased by homeowners. Large parcels of land were subsequently developed by builders through the 1950s, ’60s and ’70s. More housing was added in the 1980s when the former Rouge Hills Golf and Country Club located in the Rouge Valley was sold to developers.

Centennial/Port Union

In the 1800s, Port Union was a booming waterfront village with thriving ship building and commercial fishing industries, two hotels, a commercial wharf, and a variety of small businesses. In 1856, the Grand Trunk Railway opened a station in Port Union which added to the importance of this waterfront village.

By 1865, Port Union’s population had reached 100 people and it was granted its own post office. The two hotels that operated in Port Union during these boom times were said to have served “knock-em stiff” whiskey and “40 Rod Whiskey”.

By the late 1800s Port Union’s shipping industry had lost most of its business to the railway and subsequently shut down. Port Union then went into a period of decline that lasted until the late 1940’s, when the return of industry to this area sparked a residential housing boom. In the 1990’s, Port Union reclaimed its waterfront with a new housing subdivision that has helped connect this neighbourhood to its illustrious past.

The area south of Lawrence Avenue is now referred to as Port Union Village. The area north of Port Union Village is now referred to as Centennial, which makes reference to the north-south street which runs through the centre of this community. Centennial Street was named after Centennial Church (circa 1891), which still stands at the north end of Centennial Road off Kingston Road. The west portion of Centennial was settled first, with larger properties and homes. By the early 1960s, Centennial East had also become a popular residential area with new homes being built steadily through the ’60s and ’70s.

Reposted from Jill's Team

These lakeshore communities lie south of Kingston Road and the 401, just west of the Rouge River and the city limits. West Rouge is the area east of Port Union Road, and Centennial (named for its main north-south street) lies between Port Union Road and the Highland Creek parklands. In the 1800s Port Union was a major port and fishing village which grew in importance in 1856 when the Grand Trunk Railway built a station, though the port declined in significance. In the 1960s the area underwent a housing boom, and in the 1980s the development of the former Rouge Hills Golf and Country Club added housing in the Rouge Valley. In the 1990s, the redevelopment of the Port Union waterfront added high density townhouses.

From Moving Canada - West Rouge & Port Union – Scarborough (Toronto) Neighbourhoods

History of West Rouge

West Rouge was primarily farmland in 1926, when real estate developer Cecil White created the “Rouge Hills” subdivision. This development was intended to be a unique summer playground, with grand country estates spread out along the Rouge River. There were even plans for an elaborate canal system and private boathouses to service these estates. “Rouge Hills” was never completed, however a few of the cottages on Rouge Hills Drive and Ridgewood Rd are legacies of this subdivision. Year round residential development of the West Rouge neighbourhood began in the 1940’s, with individual lots being purchased by homeowners. Large parcels of land were subsequently developed by builders through the 1950, 60’s and 70’s. More housing was added in the 1980’s when the former Rouge Hills Golf and Country Club located in the Rouge Valley was sold to developers.

From Sold by Shane West Rouge

This is a fairly current aerial photo of the Rouge Beach. It didn't look like this when I was a kid in the 1970's. People used to drive under the railway bridge and use the beach. There was some parking there. I can remember a little building which had a public washroom. It's still a very long beach. Though ownership has changed and I don't know if some of it is blocked off now. I do know the road going under the bridge was closed off. Now you can park on the other side.

I can see a large building on the beach side now. It was not there before. I've never seen it up close to know what it is.

On the marshy side, there is a lot more parking than there ever was before. It looks strange to see it. Before it was mainly just a dirt road with the marshy area right at the road, just a foot or so from the road. Cars would park at the side of the road, trying to leave room for other cars driving to the beach. People would go fishing in the marshy water. It used to smell like fish. I wonder if it still does, if there are any fish left. Sometimes herons would fly in too. Frogs, all those wildlife, that likely are not there now.

I don't know what year this photo was taken (Parks Canada). It must be about 2020 I'd guess.

It looks like the bridge is still there, crossing from Rouge Beach into Pickering. It was not an old bridge, built about the time I was in high school, the 1980s. Or not long after that. It was at the narrow part of the water between the beach and the marshy area. It has a long ramp for disabled access which was not there when I last visited the area.

Thank you to Toronto Boris for these images.

The Rouge Beach area was once a popular resort and cottage area in the late 19th and early 20th centuries. One man even had a vision to build a "Venice of the North" here, though his dreams ultimately never materialized.

In the early 19th century, a growing industrial economy began to surround the predominantly rural areas of the Rouge Valley. Water-based methods of transportation were often used to get agricultural and other products to market. The mouth of the Rouge River even had some of its own shipbuilding with at least four ships, sailing vessels, and steamers being constructed between the 1820s and 1880s.

As time progressed into the late 19th and early 20th centuries, the Rouge became a centre for leisure and recreation, a place for city-dwellers to escape into nature. Rosebank, for example, was a large-scale resort that began to develop in the 1870s, and quickly became an affordable and popular summer resort, offering camping, picnic grounds, and a dance hall. Morgan's Park was another area where city dwellers could escape the "roar of cities", having several cottages that eventually became year-round homes. Both Rosebank and Morgan's Park were located east of where Rouge Beach is today, on the other side of the Rouge River.

In the early 1920s, Cecil White, a local real estate broker, envisioned building a "Venice of the North" in the marsh area, calling it the Rouge Hills. He hired a team of Italian architects to design the project, which was to include roads, a network of canals, an artificial lake, and a bridge over the Rouge River. The project stalled once when the Great Depression hit in 1929 and again with the start of World War II in 1939. When Highway 401 reached the area in 1942, construction sped up again. Unfortunately, White passed away in 1946, before the project was completed. His wife Gladys continued work on the development, but when Hurricane Hazel hit Toronto in 1954, the project was largely destroyed and White's dream was abandoned. Today, one of the canals can still be seen on Google maps.

Hurricane Hazel hit Toronto in 1954, claiming 81 lives and damaging many parts of the city, including several areas within the park.

Hurricane Hazel struck Toronto on October 15, 1954, bringing winds of 110 km/h and 285 mm of rain in 48 hours. Eighty-one people died, roads and bridges were washed out, trains were derailed, and thousands of people were left homeless due to the destructive flooding that occurred in the city's river valleys. Damages were estimated at $100 million (well over $1 billion today).

Hurricane Hazel impacted many areas of the park. Cecil White's Venice of the North development at Rouge Beach was severely damaged by the storm, causing the project to be abandoned. Graham Park, a campground along the Rouge River, was also destroyed by the flooding. The land was later acquired by the Toronto and Region Conservation Authority and is now the site of Glen Rouge Campground. A bit further north, the flood waters washed away the swimming hole dam at the Rouge Valley Inn, near Twyn Rivers Drive.

Several bridges in the park were also washed out, including the bridge on Old Finch Avenue, near the Finch Meander area. To restore traffic flow through the area, a number of Bailey bridges were installed by the 2nd Field Engineer Regiment of the Canadian Military Engineers. The bridge on Old Finch Avenue is the last of these remaining in service in Toronto. Hurricane Hazel also damaged the campground and cottage area at Woodland Park and washed out the bridge at Reesor Road and Steeles Avenue.

Significant changes were made in the aftermath of Hurricane Hazel. A 1956 report gave the Rouge, Duffins, Humber, and Petticoat (RDHP) Conservation Authority a mandate to acquire and manage properties for flood control purposes. Today, many of these lands are valuable conservation and recreation areas. In 1957, the RDHP Conservation Authority merged with the Humber Valley and Etobicoke-Mimico authorities to create the Metro Toronto Regional Conservation Authority (MTRCA). They developed a "Plan for Flood Control and Water Conservation", which led to the construction of dams, reservoirs, and stream channel improvements for flood mitigation.

The report also suggested that the Rouge offered great potential "for the development of a large-scale wilderness parkland and nature preserve", though no action was taken on this suggestion at the time. It would be several more decades before Rouge National Urban Park would be established.

Source - Parks Canada.