| Charles River Dam | |
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 Charles River Dam. Pump building is on the left, locks are in the middle. Note colored chimes on railing. | |
  Location of Charles River Dam in Massachusetts | |
| Coordinates | 42°22′07″N71°03′40″W / 42.3685°N 71.061°W |
The Charles River Dam is a flood control structure on the Charles River in Boston, Massachusetts, located just downstream of the Leonard P. Zakim Bunker Hill Memorial Bridge, near Lovejoy Wharf, on the former location of the Warren Bridge. [1]
The Charles River Dam was built by the U.S. Army Corps of Engineers. The structure also includes the "Colonel Richard Gridley Locks", named for General George Washington's first army engineer. Built and operational in 1978, the three locks can be crossed by pedestrians as well as bicyclists. It is part of the popular Boston Harborwalk. The dam contains three individual locks, with one wider than the other two to accommodate the occasional passing of a larger vessel. The structure also includes a fish passage. Six diesel-powered, 2700 horsepower turbo-charged engines drive six pumps with a combined capacity of about 3.7 million US gallons (14,000 m3) per minute or 8140 cubic feet per second (CFS). [2]
The dam controls the surface level of the river basin as well its tributaries upstream, including the Back Bay Fens and Muddy River and to prevent sea water from entering the Charles River freshwater basin during high tides. It replaced the 1910 Charles River Dam upstream, now the site of the Boston Museum of Science . The 1910 dam includes two locks (one under the Science Museum parking garage). Both locks are now kept open for navigation. The older dam could not keep sea water out and a layer of salt water accumulated at the bottom of the fresh water basin, contributing to pollution and fish migration problems.
The dam's walkway is the site of the "Charlestown Bells", an interactive art installation by Paul Matisse, consisting of a set of chimes mounted on the railing that passers-by can strike. [3] The work was refurbished in 2013 after it had fallen into disrepair.
The Charles River Dam was once in the shadow of the former Charlestown High Bridge located upstream. It was replaced by the Leonard P. Zakim Bunker Hill Bridge just upstream.
The Mississippi River is the primary river, and second-longest river, of the largest drainage basin in the United States. From its traditional source of Lake Itasca in northern Minnesota, it flows generally south for 2,340 miles (3,766 km) to the Mississippi River Delta in the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 32 U.S. states and two Canadian provinces between the Rocky and Appalachian mountains. The main stem is entirely within the United States; the total drainage basin is 1,151,000 sq mi (2,980,000 km2), of which only about one percent is in Canada. The Mississippi ranks as the thirteenth-largest river by discharge in the world. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.
The Leonard P. ZakimBunker Hill Memorial Bridge is a cable-stayed bridge completed in 2003 across the Charles River in Boston, Massachusetts. It is a replacement for the Charlestown High Bridge, an older truss bridge constructed in the 1950s.
The Willamette River is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.
Charlestown is the oldest neighborhood in Boston, Massachusetts, in the United States. Also called Mishawum by the Massachusett, it is located on a peninsula north of the Charles River, across from downtown Boston, and also adjoins the Mystic River and Boston Harbor waterways. Charlestown was laid out in 1629 by engineer Thomas Graves, one of its earliest settlers, during the reign of Charles I of England. It was originally a separate town and the first capital of the Massachusetts Bay Colony.
The Cowlitz River is a river in the state of Washington in the United States, a tributary of the Columbia River. Its tributaries drain a large region including the slopes of Mount Rainier, Mount Adams, and Mount St. Helens.
Bonneville Lock and Dam consists of several run-of-the-river dam structures that together complete a span of the Columbia River between the U.S. states of Oregon and Washington at River Mile 146.1. The dam is located 40 miles (64 km) east of Portland, Oregon, in the Columbia River Gorge. The primary functions of Bonneville Lock and Dam are electrical power generation and river navigation. The dam was built and is managed by the United States Army Corps of Engineers. At the time of its construction in the 1930s it was the largest water impoundment project of its type in the nation, able to withstand flooding on an unprecedented scale. Electrical power generated at Bonneville is distributed by the Bonneville Power Administration. Bonneville Dam is named for Army Capt. Benjamin Bonneville, an early explorer credited with charting much of the Oregon Trail. The Bonneville Dam Historic District was designated a National Historic Landmark District in 1987.
The Mystic River is a 7.0-mile-long (11.3 km) river in Massachusetts. In the Massachusett language, missi-tuk means "large estuary", alluding to the tidal nature of the Mystic River. The resemblance to the English word mystic is a coincidence, which the colonists followed.
The Charlestown High Bridge spanned the Charles River in Boston, Massachusetts and was part of I-93/US 1 at the north end of the Central Artery.
The Hiram M. Chittenden Locks, or Ballard Locks, is a complex of locks at the west end of Salmon Bay in Seattle, Washington's Lake Washington Ship Canal, between the neighborhoods of Ballard to the north and Magnolia to the south.
Dworshak Dam is a concrete gravity dam in the western United States, on the North Fork of the Clearwater River in north central Idaho. In Clearwater County, the dam is located approximately four miles (6 km) northwest of Orofino and impounds the Dworshak Reservoir for flood control and hydroelectricity generation.
Gavins Point Dam is a 1.9-mile-long (3 km) embankment rolled-earth and chalk-fill dam which spans the Missouri River and impounds Lewis and Clark Lake. The dam joins Cedar County, Nebraska with Yankton County, South Dakota a distance of 811.1 river miles (1,305 km) upstream of St. Louis, Missouri, where the river joins the Mississippi River. The dam and hydroelectric power plant were constructed as the Gavins Point Project from 1952 to 1957 by the United States Army Corps of Engineers as part of the Pick-Sloan Plan. The dam is located approximately 4 miles (6.4 km) west or upstream of Yankton, South Dakota.
The Charles River Reservation is a 17-mile-long (27 km) urban preserve and public recreation area located along the banks of the Charles River in Boston, Cambridge, Watertown, and Newton, Massachusetts. The reservation is managed by the Massachusetts Department of Conservation and Recreation.
The Charlestown Bridge, officially named the North Washington Street Bridge, is located in Boston and spans the Charles River. As the river's easternmost crossing, the bridge connects the neighborhoods of Charlestown and the North End. Completed in 1900 and given its current official name in 1910, the bridge carries a portion of the Freedom Trail linking to the USS Constitution and Bunker Hill. To the north of the bridge, Route 99 begins and the street becomes New Rutherford Avenue.
The Leverett Circle Connector Bridge is a highway bridge over the Charles River, carrying two lanes each of northbound and southbound traffic. It connects to Interstate 93 (I-93) in Somerville, Massachusetts at the northern end and splits at the southern end, providing direct access to both Storrow Drive and Leverett Circle in Boston. Going northbound, there is also a fork which provides access to the City Square Tunnel under Charlestown to proceed on U.S. Route 1 (US 1) northbound via the Tobin Bridge.
North Point Park is an 8.5-acre (3.4 ha) park located along the left bank of the Charles River on the border of Cambridge and Boston, Massachusetts, created as mitigation for the taking of planned parkland for the construction of the Big Dig.
Boston Harborwalk is a public walkway that follows the edge of piers, wharves, beaches, and shoreline around Boston Harbor. When fully completed it will extend a distance of 47 miles (76 km) from East Boston to the Neponset River.
The Charles River Natural Valley Storage Area comprises over 8,000 acres (3,200 ha) of protected land in the middle and upper watershed of the Charles River in eastern Massachusetts in the United States. The lands were acquired by the United States Army Corps of Engineers and are managed by the Massachusetts Division of Fisheries and Wildlife. The project's field office is located at West Hill Dam.
The Portland District is one of the five districts within the Northwestern Division of the United States Army Corps of Engineers. The Portland District is made up of some 1,100 civilian and 6 military personnel.
Paul Revere Park is a five-acre (2.0 ha) park located on the Charles River in Charlestown, Massachusetts. The park was the first park to open along the "Lost Half Mile" of the Charles River as mitigation for the taking of planned parkland for the construction of the Big Dig. The park runs along the Charles River between the Freedom Trail on North Washington Street and the Leonard P. Zakim Bunker Hill Memorial Bridge. The park features a large oval-shaped lawn, an informal performance area, and a playground.
Crossings of the Charles River | ||||
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