According to the
United States Census Bureau, the town has a total area of , of which , or 19.85%, is water. The southern section of Old Lyme has a mostly flat topography, intersected with tidal marsh and swamp, while the northern sections of the town have a rocky and hilly terrain. Old Lyme lies in the
Köppen climate classification zone Cfa, or mild
temperate climate. The summers have highs in the 80s °F (and 90's F on occasion) and the winters have highs in the upper 30s to low 40s °F. The average annual precipitation is about 40 inches (100 cm), and about 28 inches of snow falls on average each winter. Snowcover is normally brief.
Principal communities • Black Hall • Laysville • Lyme Station • Old Lyme Center • Sound View • South Lyme • Edge Lea • Hatchetts Point • Point O'Woods Other minor communities and geographic features in the town are Between the Rivers, Black Hall Pond, Brighton Beach, Ferry Road, Flat Rock Hill, Four Mile River, Griswold Point, Hall's Corners, Hawk's Nest Beach, Homestead Circle, Johnnycake Hill, Miami Beach, Mile Creek, Neck Road, Old Colony Beach, Old Lyme Estates, Old Lyme Shores, Rogers Lake, Sill Lane, Smith's Neck, Tantummaheag, Tuttles Sandy Beach, Whippoorwill, and White Sand Beach.
Rogers Lake Rogers Lake, located in the towns of Old Lyme and Lyme, is formed by a dam along Town Woods Road in Old Lyme. The lake's surface area is . Mill Brook, Grassy Hill Brook and Broad Swamp Brook feed into the lake. The lake's watershed is of woodland. The outlet below the dam is Mill Brook, which is a tributary of the
Lieutenant River, a tributary of the Connecticut River. Five small islands are on Rogers Lake, the largest of which has a small cottage built on it. Rogers Lake is stocked every year with
brook and
rainbow trout. A street that runs along the north side of Rogers Lake is called Blood Street; it has lent its name to the town's rowing team, the Blood Street Sculls. Rogers Lake is also bordered by Grassy Hill Road and Town Woods Road, with a small lakeside neighborhood off of Rogers Lake Trail.
Roger: The Rogers Lake Monster Roger is the name given to a legendary lake monster said to inhabit Rogers Lake, a freshwater body in Old Lyme, Connecticut. Like the Loch Ness Monster or Lake Champlain’s “Champ,” Roger’s existence remains hotly debated. While many locals dismiss him as folklore, others speculate he could be a distant relative of the plesiosaur, an ancient aquatic reptile. Though no scientific evidence has ever confirmed his presence, more than 200 reported sightings have kept the legend alive, drawing curious visitors to the Old Lyme and Lyme areas. Long before colonial accounts, Native American tribes of Connecticut referred to the creature as “Caca-togo.” According to the Connecticut Association of Cryptozoology (CAC), the first documented sighting of Roger took place in 1878. A member of the Old Lyme Art Colony, while setting up her easel on the lake’s northeast shore, reportedly saw a massive, long-necked, gray-skinned creature rise nearly 20 feet above the surface before slipping back beneath the water. Far from frightened, she later told her family she felt more wonder than fear. Over the years, artists of the colony began weaving Roger into their canvases, a whimsical tradition that led Lyme Art Academy historian Herbert A. Strekel to quip: “If Picasso had his red period and Monet had his blue period, then this was their Lake Monster period.” ==Demographics==