Lake Carnegie is a reservoir that straddles the borders of the towns of Princeton, West Windsor, Plainsboro and South Brunswick in Mercer and Middlesex counties in central New Jersey. The lake was created by construction of a dam along the Millstone River, though the lower portion of the lake actually follows the valley of its largest tributary, the Stony Brook, while the Millstone River crossed under the D&R Canal to the south. The lake is about three miles long, but only about 800 feet wide.
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Westons Mill Pond is the northernmost of several lakes created by damming the Lawrence Brook, which flows from south to north, and into the Raritan River. This access point is the road that led up to the old bridge, which is gone. There is always enough parking and it is an easy launch, just a few yards to the water.
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The launch point is on the river behind the little strip mall off Route 527 / Old Matawan Rd. I have never had a problem parking here, although I don't think this would be a good place for a large group to show up. Entry can be messy if the water is low.
The river is tidal and brackish at this point. If the tide is high, you can go upstream to the left, under the highway. Pick your way around all the fallen trees and have fun avoiding all the dead-ends, and you can go all the way to the Duhernal Lake dam. The lake itself is off limits.
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