Waterbury River Index Station
- Real time graphs and data for river index station located on the Naugatuck River. From the US Army Corps of Engineers.
- https://rsgis.crrel.usace.army.mil/nae/pls/nae/nae_web.nae_realtime.riverpage?gagecode=WAT

Mattatuck Astronomical Society Observatory
- Houses a C-14, C-8 and 5" Meade Refractor used to educate the public, for the school's astronomy program and for free public observation evenings. Located at Naugatuck Valley Community College.
- http://www.nvctc.commnet.edu/observatory/mashome.html

Mattatuck Astronomical Society
- Membership organization provides meeting schedule, observation schedule, items for sale, officers, photos and membership information.
- http://www.mastransit.org/