Merrimack County, New Hampshire

Blackwater Dam is a dam in the town of Webster, Merrimack County, New Hampshire. The earthen dam was constructed in 1941 by the United States Army Corps of Engineers with a height of 69 feet (21 m) and 1,150 feet (350 m) long at its crest. It impounds the Blackwater River for flood control and storm water management as one of five related projects in the Merrimack River basin. The dam is owned and operated by the New England District, North Atlantic Division, Army Corps of Engineers. The seasonal flood-control reservoir created by the dam has a maximum capacity of 93,400 acre-feet (120 million cubic meters), but is normally dry, apart from the normal flow of the Blackwater. The site includes 8 miles (13 km) of river popular for canoeing and kayaking, and fishing for brown and rainbow trout.

The Webster Congregational Church is a historic Congregational church off NH 127 on Long Street in Webster, New Hampshire, United States. The church was built in 1823 by George Pillsbury, a local builder, with interior joinery by William Abbot, another experienced church builder, and is an excellent representation of late Federal styling. The main facade has three entrances, each topped by a semicircular fanlight with reeded soffit. The central doorway has sidelight windows, while the flanking doors do not. On the second level there is a Palladian window above the central door, and smaller round-arch windows nearly above the flanking doors. The gable end of the roof is fully pedimented, with a semi-elliptical window in the tympanum.The tower begins with a square section that has a clock in the front face, and continues with an open belfry supported by columns topped by elliptical arches. Above the belfry is a smaller square lantern stage with louvered openings and corner pilasters. This is topped by a four-sided dome and finial. Each stage of the tower has a decorative balcony railing, shrinking in size, with matching corner posts topped by finials.The interior of the building consists of a large auditorium with gallery, and an entry vestibule with stairs on either side. The gallery is supported by turned posts that rise to an elaborate entablature that forms the base of the gallery's parapet. The interior is lit by a chandelier installed in 1884 and electrified in 1930.The church was listed on the National Register of Historic Places in 1985.

Webster is a town in Merrimack County, New Hampshire, United States. The population was 1,913 at the 2020 census.

Allen State Forest is a 30-acre (0.12 km2) state forest of New Hampshire located in the northwest section of the city of Concord in Merrimack County. The state forest is located approximately 1,500 feet (460 m) north of the Contoocook River.

The Old Webster Meeting House is an historic meeting house at 1220 Battle Street in Webster, New Hampshire. Built in 1791, and altered in the 1840s, the meeting house is one of a small number of 18th-century meeting houses to survive in northern New England. The building was moved from its original site in 1942 to make way for a flood control project and was given modern footings for the granite foundation in 1979. The building, owned by the Society for the Preservation of the Old Meeting House, now serves as a local museum. It was listed on the National Register of Historic Places in 1985.

The Blackwater River is a 37.5-mile-long (60.4 km) river located in central New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed. The Blackwater River is formed at Cilleyville, a village in the western part of the town of Andover, by the junction of two branch streams. Cascade Brook, the western branch, begins at Cascade Marsh in the northeast part of Sutton and flows northeast to Wilmot Flat, where it is joined by the outlet of Pleasant Lake of New London before continuing east to Cilleyville. Frazier Brook, the northern stream branch, rises just south of Danbury village and flows south parallel to Route 4, passing South Danbury, flowing through Eagle Pond in Wilmot and then through Bog Pond below West Andover, joining Cascade Brook just south of the outlet of Bog Pond. Kimpton Brook (formerly known as Quickwater Brook), flowing easterly through the village of Wilmot Center, is the primary tributary of Eagle Pond. From its start at Cilleyville, the Blackwater River flows east through the town of Andover, passing the village of Potter Place. Beyond Andover village, the river continues to wind its way east, eventually turning south near the Blackwater Bays and dropping over rapids through the village of West Salisbury to the impoundment area of the Blackwater Dam in the town of Webster. Below the reservoir dam, the Blackwater encounters a short, intense whitewater stretch before flattening again for the final miles to the Contoocook in Hopkinton.

The First Congregational Church of Boscawen is a historic church at 12 High Street in Boscawen, New Hampshire. Built in 1799, the wood-frame church was significantly altered in 1839, when it acquired its present Greek Revival character. It is one of the few surviving meeting houses in New Hampshire that continues to combine religious and municipal functions; it basement space is used for town meetings and elections. The building was listed on the National Register of Historic Places in 1982.

The Boscawen Public Library is the public library of Boscawen, New Hampshire, United States. It is located at 116 North Main Street. The library's first building, built in 1913 to a Colonial Revival design by Guy Lowell, was listed on the National Register of Historic Places in 1981, and is slowly undergoing rehabilitation.

The Boscawen Academy and Much-I-Do Hose House are a pair of historic civic buildings in Boscawen, New Hampshire. Now owned by the Boscawen Historical Society, these two buildings played a significant role in the civic history of the town for over 150 years, and were listed on the National Register of Historic Places in 1980.

Boscawen is a town in Merrimack County, New Hampshire, United States. The population was 3,998 at the 2020 census.

The Morrill-Lassonde House is a historic house at 150 King Street in Boscawen, New Hampshire. Built about 1769, it is believed to be the oldest surviving house in the town. Historically significant residents include clock mechanism inventor Benjamin Morrill and artist Omer T. Lassonde, a founder of the New Hampshire Art Association. The house was listed on the National Register of Historic Places in 1984. Given by Lassonde's widow to the New Hampshire Art Association, it is now in private ownership.

Lake Merrimack was a glacial lake that formed during the late Pleistocene epoch. After the Laurentide Ice Sheet retreated, glacial ice melt accumulated at the terminal moraine and blocked up the Merrimack River, creating the narrow lake. The lake extended from Manchester to Plymouth, New Hampshire. It is unknown when the lake was drained. Lake Hitchcock is an important part of the geology of New Hampshire. It experienced annual layering of sediments, or varves: silt and sand in the summertime (due to glacial meltwater) and clay in the wintertime (as the lake froze).