The Northern Monmouth Watershed Alliance consists of municipalities in the Monmouth Watershed Management Area (WMA 12) and the Lower Raritan, South River, and Lawrence Watershed Management Area (WMA 9):
- Aberdeen Township
- Monmouth Watershed Management Area (WMA 12)
- Raritan / Sandy Hook Bay Tributaries Watershed
- Environmental & Shade Tree Advisory Board
- Contact
- Monmouth Watershed Management Area (WMA 12)
- Colts Neck Township
- Monmouth Watershed Management Area (WMA 12)
- Navesink River / Lower Shrewsbury River Watershed
- Environmental Commission
- Contact
- Monmouth Watershed Management Area (WMA 12)
- Hazlet Township
- Monmouth Watershed Management Area (WMA 12)
- Raritan / Sandy Hook Bay Tributaries Watershed
- Environmental Commission
- Contact
- Monmouth Watershed Management Area (WMA 12)
- Holmdel Township
- Monmouth Watershed Management Area (WMA 12)
- Navesink River / Lower Shrewsbury River Watershed
- Raritan / Sandy Hook Bay Tributaries Watershed
- Environmental Commission
- Contact
- Monmouth Watershed Management Area (WMA 12)
- Keansburg Borough
- Monmouth Watershed Management Area (WMA 12)
- Raritan / Sandy Hook Bay Tributaries Watershed
- Monmouth Watershed Management Area (WMA 12)
- Contact
- Keyport Borough
- Monmouth Watershed Management Area (WMA 12)
- Raritan / Sandy Hook Bay Tributaries Watershed
- Environmental Commission
- Contact
- Monmouth Watershed Management Area (WMA 12)
- Manalapan
- Lower Raritan, South River, and Lawrence Watershed Management Area (WMA 9)
- Manalapan Brook Watershed
- Matchaponix Brook Watershed
- Environmental Commission
- Contact
- Lower Raritan, South River, and Lawrence Watershed Management Area (WMA 9)
- Middletown Township
- Monmouth Watershed Management Area (WMA 12)
- Navesink River / Lower Shrewsbury River Watershed
- Raritan / Sandy Hook Bay Tributaries Watershed
- Environmental Commission
- Contact
- Monmouth Watershed Management Area (WMA 12)
- Union Beach Borough
- Monmouth Watershed Management Area (WMA 12)
- Raritan / Sandy Hook Bay Tributaries Watershed
- Construction, Code Enforcement, Environmental & Planning Board
- Contact
- Monmouth Watershed Management Area (WMA 12)