Beach and Waterfront

Osborn Island

A tiny Brielle-owned island in the Manasquan River, accessible only by boat or kayak, with a sandy beach and informal wooded trails

Take Me There
Dog policy Leashed Dogs Welcome
Cost Free
Best time to visit Summer

If you are craving something different, this one is for you. Osborn Island, officially named Nienstedt Island but known locally as Treasure Island, sits on the Manasquan River and is only reachable by boat, kayak, or swimming. Once on the island, you'll find a sandy beach for relaxing and informal wooded trails for walking. This spot is best suited for dog owners with a kayak or boat.

Plan your visit

Address
Manasquan River
Brielle, NJ 08730
Hours
Daylight Hours
Get directions

Know before you go

  • This island is only reachable by boat; there is no bridge or dock
  • Watch tides carefully so your boat doesn't get stranded or drift at high tide

Been here with your dog? Share your photos.

Notice something outdated? Suggest a correction.