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The Conservation Commission is responsible for administering the Massachusetts Wetlands Protection Act (WPA). The WPA is a state law governing activities in and around local wetlands, waterways and floodplains.

Annual Exempt Organization Forms (State Tax Form 3ABC) should be filed annually by charitable, benevolent, educational, literary, religious, scientific, or temperance organizations and trusts owning real or personal property on January 1, for which they claim exemption for the fiscal year that begins the next July 1.

Extended reality (XR) opens the door to worlds and experiences outside the everyday through virtual reality, augmented reality, and mixed reality equipment. Test drive our Microsoft HoloLens augmented reality glasses, Structure Sensor 3D scanner, Merge headsets, and more. Registration is required. You must complete Hive Safety Training before registering for this workshop.

Exchange your surplus paint, fabric, fiber, and other supplies with fellow crafters and artists in the community! Donations accepted at the Main Library Q&A desk starting January 5, 2026. Make & Mend Somerville has generously offered to accept leftover supplies, so please make sure your donations follow their guidelines: https://makeandmendshop.com/pages/donate.

The Foundry is a self-sustaining center of creativity and collaboration in the Kendall Square neighborhood, offering the Cambridge community opportunities in science, technology, engineering, arts, and math.

Photos from winter sampling on Fresh Pond in March, 2014. CWD and CFD staff carefully trekked out on the ice, which ranged from 12 - 14 inches thick. After drilling holes CWD staff measured temperature and dissolved oxygen levels vertically throughout Fresh Pond to check the ecological health of the Reservoir.

Birdwatching, Accessorize Your Backpack, Movie Night, and More!

Exchange your surplus paint, fabric, fiber, and other supplies with fellow crafters and artists in the community! Donations accepted at the Main Library Q&A desk starting July 19. Make & Mend Somerville has generously offered to accept leftover supplies, so please make sure your donations follow their guidelines: https://makeandmendshop.com/pages/donate.

Come get creative at Collins! Join your neighbors at this casual, drop-in afternoon craft session. This month, celebrate winter by making snowflakes. We'll provide supplies and instructions to cut traditional snowflakes and advanced 3-D versions using multiple sheets of paper. This month's activity is recommended for people of all ages.

All residents aged 65 years of age or older who own and occupy their one, two or three family home are eligible for a 15% discount on water/sewer charges.