Clough

Clough State Park is a public recreation area situated on the eastern shore of Everett Lake in Weare, New Hampshire, approximately 12 miles southwest of Concord. The park centers on a 150-acre reservoir created by the Hopkinton-Everett Dam on the Piscataquog River, which was constructed by the U.S. Army Corps of Engineers in response to devastating floods, most notably the catastrophic Hurricane of 1938. The park features a 900-foot sandy beach, expansive picnic areas, play fields, and a boat ramp for non-motorized watercraft. Located on federal land managed by the New Hampshire Division of Parks and Recreation, Clough State Park offers a family-friendly day-use destination for swimming, picnicking, fishing, and scenic enjoyment. The dam itself, a 2,000-foot-long and 115-foot-high rolled earth structure, also serves as a hiking and biking path with scenic views of the lake. The park operates seasonally from Memorial Day through Labor Day, with a poignant subtext beneath its recreational surface: the village of East Weare was demolished and its residents relocated to create the flood control reservoir.

Clough State Park and Everett Lake support wildlife communities adapted to the reservoir-centered landscape created by the construction of the Hopkinton-Everett Dam. The 150-acre lake attracts various waterfowl species including mallards, wood ducks, Canada geese, and during migration seasons, species such as Common Mergansers and Ring-necked Ducks. Great Blue Herons wade the shallow margins, while Belted Kingfishers hunt from perches along the shoreline. The lake supports warm-water fish populations including largemouth bass, smallmouth bass, chain pickerel, yellow perch, and various panfish species, making it a popular fishing destination. The surrounding forest, which has regrown on formerly agricultural land since the mid-20th century, harbors white-tailed deer, eastern wild turkeys, red foxes, coyotes, and various small mammals. Bald Eagles have been increasingly observed around New Hampshire's lakes and may visit Everett Lake. The prohibition of motorized boats on the lake creates relatively undisturbed conditions beneficial for nesting waterfowl and other shoreline-dependent wildlife. Beaver activity along tributary streams contributes to wetland habitat creation in the reservoir's upper reaches. The park's educational programs include presentations on furbearers and local wildlife ecology.

The vegetation surrounding Clough State Park and Everett Lake reflects the complex history of this landscape, which transitioned from pre-colonial forest to agricultural fields, then to a reservoir basin and surrounding second-growth forest. The current forest cover consists of mixed hardwoods and conifers including red maple, sugar maple, red oak, white oak, white birch, eastern white pine, and eastern hemlock. The forest understory features mountain laurel, blueberry, and various shrub species colonizing former agricultural fields. Along the reservoir margins, wetland vegetation includes sedges, rushes, cattails, and emergent aquatic plants that have established since the lake's creation. Aquatic vegetation within the lake includes water lilies, pondweed, and various submergent species that provide habitat structure for fish and invertebrates. The beach and picnic areas are maintained as open grassland, while the dam embankment supports a grass cover that stabilizes the earthen structure. Remnant stone walls running through the forest provide evidence of the former agricultural landscape, with mature trees growing along these former field boundaries. Old stone walls and even rusted automobile parts visible along trails are relics of the pre-dam community, adding historical interest to the natural landscape.

The geological story of Clough State Park is inextricably linked to the Piscataquog River and the forces that led to the construction of Everett Lake's dam. The underlying bedrock of the Weare area consists of metamorphic rocks including schists and gneisses formed during ancient mountain-building events. The Piscataquog River valley was shaped by glacial processes during the Pleistocene, with the retreating Laurentide Ice Sheet depositing stratified drift and glacial till that formed the valley's current configuration. The river carved its channel through these glacial deposits and, in some areas, into the underlying bedrock. The Hopkinton-Everett Dam, completed in 1962, fundamentally altered the geological processes of the river valley by impounding water to create the 150-acre Everett Lake. The dam itself is an impressive engineering structure at 2,000 feet long and 115 feet high, constructed of rolled earth fill with rock slope protection. The reservoir's sediment dynamics differ from the natural river system, with fine sediments accumulating in the lake basin rather than being transported downstream. The dam was designed to handle extreme flood events, providing 91,500 acre-feet of flood control storage. The reservoir has been utilized for flood control seven times since construction but has never reached capacity, coming closest in 1987 at 95 percent.

Clough State Park experiences a humid continental climate typical of south-central New Hampshire, with conditions moderated slightly by the thermal mass of Everett Lake. Winters are cold, with average January temperatures ranging from 12 to 32 degrees Fahrenheit and annual snowfall averaging 55 to 65 inches. The lake typically freezes from late December through March, and ice fishing is a popular winter activity. Summers are warm and humid, with July temperatures averaging 62 to 84 degrees Fahrenheit, providing ideal conditions for the park's beach and swimming activities. The swimming season typically extends from late June through Labor Day, coinciding with the park's fully staffed operational period. Spring brings snowmelt and rising lake levels as the Army Corps of Engineers manages dam operations to balance flood control with recreational lake levels. The park's beach orientation and the lake's surface create pleasant breezes on warm summer days. Autumn foliage in the surrounding hardwood forest peaks in early to mid-October. The region occasionally experiences the remnants of tropical storms and hurricanes, events that test the dam's flood control capacity. Annual precipitation averages approximately 42 to 46 inches, with summer thunderstorms sometimes causing temporary beach closures.

The human history of the Clough State Park area carries a poignant narrative of community sacrifice for flood protection. For generations, the village of East Weare thrived along the Piscataquog River, with farms, homes, and community buildings forming a small but vibrant settlement. The devastating floods of 1936 and the catastrophic Hurricane of 1938 struck the Piscataquog watershed with extraordinary force, with flood discharges measured at 21,900 cubic feet per second near Goffstown, exceeding a 100-year storm event. The 1938 hurricane also caused the failure of the Weare Reservoir, compounding the destruction. These back-to-back disasters, the worst flooding since 1733, catalyzed a federal flood control dam-building initiative. Through an act of Congress and using eminent domain, the U.S. government purchased approximately 10,000 acres for the Hopkinton-Everett Flood Control System. The village of East Weare was demolished and its residents were relocated throughout New Hampshire and Massachusetts. Old stone walls and rusted remnants visible along today's trails serve as haunting reminders of the community that was submerged beneath the waters of Everett Lake.

Clough State Park was established on federal land following the completion of the Hopkinton-Everett Dam in 1962, with management delegated to the New Hampshire Division of Parks and Recreation through an agreement with the U.S. Army Corps of Engineers, which retains ownership. Construction of the dam had been delayed for years after the initial flood control authorization, partly due to the complications of relocating the village of East Weare. The park was developed with a 900-foot beach, picnic areas, play fields, and a boat ramp, providing recreational use for the flood control reservoir during periods of normal water levels. The park's name honors a local family associated with the area's history. Over the decades, the park has become a valued day-use recreation destination for residents of the Concord, Manchester, and Nashua areas, offering an affordable family beach experience. Educational programs were introduced including Saturday nature activities covering topics such as ponding, furbearer ecology, and presentations about the Everett Dam's history and flood control operations. The park's operation on Army Corps land creates a unique management arrangement where recreational use must be compatible with the primary flood control mission.

The centerpiece of Clough State Park is its 900-foot sandy beach on Everett Lake, providing a spacious swimming area that is the primary draw for summer visitors. The picnic area adjacent to the beach offers tables and open space for family gatherings, games, and relaxation. A boat ramp provides access to the lake for canoes, kayaks, and other non-motorized watercraft, with the prohibition on motorized boats ensuring a peaceful paddling experience. Fishing is popular from both shore and boat, with largemouth bass, smallmouth bass, and pickerel among the target species. The Hopkinton-Everett Dam itself serves as a unique attraction, with its 2,000-foot length functioning as a hiking and biking path that offers elevated views of the lake and surrounding forest. Trails around the reservoir pass through second-growth forest where old stone walls and rusted artifacts provide tangible connections to the lost village of East Weare. The park offers Saturday educational programs during the summer season, including nature activities for children and presentations about the dam's history and engineering. Play fields provide space for organized sports and informal recreation. The combination of beach, boating, fishing, and historical interest makes the park a versatile day-use destination.

Clough State Park is located at 455 Clough Park Road in Weare, New Hampshire, approximately 12 miles southwest of Concord. The park is accessible via Everett Dam Road from the town of Weare. Day-use fees are four dollars for adults aged 12 and older, two dollars for children aged 6 to 11, free for children under 5, and free for New Hampshire residents aged 65 and older with valid identification. Season passes are available. The park operates weekends from Memorial Day and daily from late June through Labor Day, with gates closing and locking at 7 PM each evening. Advance parking reservations are recommended, particularly on weekends and holidays, as parking is limited. Facilities include the 900-foot beach, picnic area, play fields, boat ramp, and portable toilets. No pets are permitted in the park. The park does not offer camping, but nearby state parks including Pillsbury and Bear Brook provide camping options. The nearest services are available in the town of Weare. The park is approximately 20 miles west of Manchester via Route 114, making it accessible for day trips from southern New Hampshire's population centers.

Clough State Park's conservation significance extends beyond its recreational function to encompass its critical role in the Hopkinton-Everett Flood Control System, which protects downstream communities along the Piscataquog and Merrimack Rivers from catastrophic flooding. Since the dam's completion, the system has been utilized seven times, with an estimated 200 million dollars in prevented flood damage and potentially saved lives. The approximately 10,000 acres of federal land surrounding the reservoir provide a substantial protected buffer that benefits water quality, wildlife habitat, and forest health in the upper Piscataquog watershed. The prohibition of motorized boats on Everett Lake contributes to water quality protection and reduces disturbance to aquatic and shoreline ecosystems. The second-growth forest covering formerly agricultural land demonstrates natural ecological recovery over the six decades since the reservoir's creation, with increasing structural complexity and biodiversity as the forest matures. Management challenges include monitoring water quality, managing recreational impacts on the beach and shoreline, addressing invasive aquatic plant species, and maintaining the aging dam infrastructure. The park's educational programming about the dam's history and flood control function serves a conservation communication role, helping visitors understand the relationship between land management, water resources, and community resilience.