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Point Marion Lock And Dam, Monongahela River




Point Marion Lock And Dam, Monongahela River
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General Information

Description - The original Point Marion Lock and Dam, previously known as Lock and Dam 8, was built between 1923 - 1926. In 1959, the dam was changed from a fixed crest to a gated type. The Water Resources Development Act of 1986 authorized replacement of the existing lock chamber with a larger lock chamber (84 feet by 720 feet) on the landward side of the existing chamber. Using an innovative, award-winning design in constructing the chamber, the new lock was dedicated in September 1994. Year-round navigation on the Monongahela River between Pittsburgh, PA and Fairmont, WV offers individuals and groups a viewing opportunity. Visitors are welcome Monday through Friday between 8 a.m. and 4 p.m., but group tours should be scheduled in advance by calling 724-725-5289. Fishing is the primary recreation opportunity enjoyed. Pets are welcome.

Attractions - The original Point Marion Lock and Dam, previously known as Lock and Dam 8, was built between 1923 - 1926. In 1959, the dam was changed from a fixed crest to a gated type. The Water Resources Development Act of 1986 authorized replacement of the existing lock chamber with a larger lock chamber (84 feet by 720 feet) on the landward side of the existing chamber. Using an innovative, award-winning design in constructing the chamber, the new lock was dedicated in September 1994.

Point Marion Lock and Dam consists of one lock chamber and a gated dam. This type of dam is constructed to permit increased control over the water level in the navigation pool upstream of the dam. Machinery mounted on tall concrete piers moves large chains which lift gates that are hinged into the body of the piers. As the gates are raised or lowered to control the amount of water flowing under them, the upstream pool is maintained at a relatively constant level for an authorized depth of at least 9 feet throughout its length. The dam, however, cannot be operated to control flood flows. An incidental benefit derived from the pool formed by the dam is the availability of a source of municipal and industrial water supply.

Recreation - Point Marion Lock and Dam provides for year-round navigation on the Monongahela River between Pittsburgh, PA and Fairmont, WV. Point Marion maintains a pool for 11.2 miles upstream to Morgantown Lock and Dam. Visitors are welcome Monday through Friday between 8 a.m. and 4 p.m., but group tours should be scheduled in advance by calling 724-725-5289. Fishing is the primary recreation opportunity enjoyed. Pets are welcome.

Climate - Pennsylvania generally has a moist climate with cold winters and warm summers. The Point Marion Lock and Dam area has cold winter months with temperatures averaging around 24 to 28 degrees Fahrenheit (-4 to -2 degrees Celsius). The area's average summer temperatures range around 68 to 72 degrees Fahrenheit (20 to 22 Celsius).

Location - Point Marion Lock and Dam is located at river mile 90.8 near the community of Point Marion, PA. The lock chamber and operations buildings are situated along the left descending bank of the river. Road access to the project is from Power Plant Road, leading south from State Route 88 at the Point Marion bridge.

From Pittsburgh, follow PA 837 S to observe life on the "Mon" River.


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More Information

Contact Information:
Point Marion Lock And Dam, Monongahela River, RD 1, Box 56 , Dilliner, PA, 15327-9603, Phone: 724-725-5289

Additional Information:
Pennsylvania Lakes and Reservoirs - Pennsylvania boasts as having more flowing water than any other state in the "lower 48." Whether you're looking for limestone streams, famous for trout fishing or whitewater rapids for an afternoon thrill ride, this state can fulfill that desire. The keystone state offers over 2,500 lakes and 300 streams. Ricketts Glen State Park is famous for its 30 waterfalls, the highest being a 94 foot tumble. In addition, Pennsylvania is home to the Allegheny National Forest known for its lush hardwoods, rich wildlife and a 12,000 acre lake considered ideal for catching trophy walleye, pike and muskellunge.
Pittsburgh Area - Pittsburgh is one of the greatest steel-making centers of the world. The area is host to the confluence of the Allegheny and Monongahela Rivers creating the Ohio River.

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