South River (Raritan River tributary) facts for kids

The South River is a smaller river that flows into the Raritan River in central New Jersey, United States. It's like a smaller stream joining a bigger one.

This river starts where two smaller streams meet: Matchaponix Brook and Manalapan Brook. As it flows, it becomes affected by the ocean's tides after the Duhernal Lake dam. It then joins the Raritan River between the towns of New Brunswick and Perth Amboy.

The South River actually has two places where it meets the Raritan River. It used to take a longer, winding path. So, a shortcut called the Washington Canal was built to make its journey more direct.

The town of South River is named after this very river.

About the South River

South River looking north (downstream) from the County Route 535 bridge in South River and Sayreville

The South River is an important waterway in New Jersey. It helps carry water from smaller streams into the larger Raritan River. This river system is part of the larger New York Harbor watershed.

Where Does It Flow?

The South River begins when Matchaponix Brook and Manalapan Brook come together. From there, it flows north. After passing the Duhernal Lake dam, the river's water level starts to rise and fall with the ocean tides. This means it's a tidal river in its lower sections. Finally, it empties into the Raritan River.

Its Smaller Streams

Many smaller streams and brooks flow into the South River, adding to its water. These smaller waterways are called tributaries. They collect water from the surrounding land and feed it into the main river.

Here are some of the streams that flow into the South River:

• Deep Run
• Duck Creek
• Manalapan Brook
• Matchaponix Brook
• Pond Creek
• Tennents Brook

Images for kids

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  Looking north at the South River from the Old Bridge–Sayreville border.