Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outag...
Significance: The Little Chute Locks and Dam Complex allowed passage for water craft in an otherwise unnavigable stretch of the Fox River at Little Chute created by a 36 foot drop in elevation in a little under... More
Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie Co...
Significance: The Kaukauna Locks and Dam Complex provides passage around drop in elevation of 50 feet in the Lower Fox River at Kaukauna. The complex served as an integral part of the Lower Fox River Waterway ... More
Chesapeake & Ohio Canal, Aqueduct No. 1, Riley's Lock Road Vicinity, S...
Unprocessed Field note material exists for this structure: FN-46 Survey number: HABS MD-57-B
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Chesapeake & Ohio Canal, Lockhouse at Lock 8, George Washington Parkwa...
Unprocessed Field note material exists for this structure: FN-40 Survey number: HABS MD-56-D
Chesapeake & Ohio Canal, Iron Bridge at Lock No. 68, Mile 164.82 of C ...
Significance: Similar in purpose to other bridges along the canal, this bridge carried traffic over the canal to farmlands and to a ferry on the Potomac River which crossed from Maryland to West Virginia and a ... More
St. Lucie Canal, Lock No. 1, Attendant's Quarters, St. Lucie, Cross St...
Significance: The attendants quarters were essential to the successful operation of the lock and dam. Their presence allowed the continual operation and maintenance of the facility. Survey number: HAER FL-20-A... More
St. Lucie Canal, Lock No. 1, Attendant's Quarters, St. Lucie, Cross St...
Significance: The attendants quarters were essential to the successful operation of the lock and dam. Their presence allowed the continual operation and maintenance of the facility. Survey number: HAER FL-20-A... More
St. Lucie Canal, Lock No. 1, Attendant's Quarters, St. Lucie, Cross St...
Significance: The attendants quarters were essential to the successful operation of the lock and dam. Their presence allowed the continual operation and maintenance of the facility. Survey number: HAER FL-20-A... More
Potowmack Company: Great Falls Canal, Lock No. 2, Great Falls, Fairfax...
Survey number: HAER VA-13-B Public domain photograph - historical image of Virginia, United States, free to use, no copyright restrictions image - Picryl description
Ortona Lock, Lock No. 2, Machinery and Control Houses, Caloosahatchee ...
Significance: The five control houses are significant for their role in the operation of the lock and spillway gates. Survey number: HAER FL-19-B Building/structure dates: 1937 Initial Construction
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Delaware & Raritan Canal, Lock 6A, Between Greenwood & Hamilton Avenue...
Significance: Lock 6A is a representative example of canal lock design and construction of its time. It was the last lock to be constructed on the Delaware and Raritan Canal, which was first placed in operatio... More
Delaware & Raritan Canal, Lock 6A, Between Greenwood & Hamilton Avenue...
Significance: Lock 6A is a representative example of canal lock design and construction of its time. It was the last lock to be constructed on the Delaware and Raritan Canal, which was first placed in operatio... More
Erie Canal (Enlarged), Lock Number 18, 252 North Mohawk Street, Cohoes...
Significance: Lock 18 of the Enlarged Erie Canal was part of a scheme to reduce the number of locks between Albany and Schenectady, thus making transportation easier and speedier on what was one of the most dif... More
Erie Canal (Enlarged), Lock Number 18, 252 North Mohawk Street, Cohoes...
Significance: Lock 18 of the Enlarged Erie Canal was part of a scheme to reduce the number of locks between Albany and Schenectady, thus making transportation easier and speedier on what was one of the most dif... More
Chesapeake & Ohio Canal, Lockhouse at Lock 44, 99.3 miles above tidewa...
Unprocessed Field note material exists for this structure: FN-129 Survey number: HABS MD-786
Ohio & Erie Canal, Lock No. 38, Canal & Hillside Roads, Valley View, C...
Unprocessed Field note material exists for this structure: FN-16 Survey number: HAER OH-59-C Building/structure dates: 1827 Initial Construction Building/structure dates: 1906 Subsequent Work National Regis... More
Lehigh Canal, Guard Lock 8 & Lockhouse, Island Park Road, Glendon, Nor...
Significance: 22 feet by 100 feet guard lock constructed in 1829 by the Lehigh Coal and Navigation Company. The first of now three locks in the 2.5 mile Section Eight between the Chain Dam and the outlet lock ... More
Moore Haven Lock, Warehouse, Cross-State Canal, Okeechobee Intracoasta...
Significance: This building was constructed to serve as storage and workshop space for the Moore Haven Lock Reservation. It is significant for its role in the operation of the lock and dam. Survey number: HAER... More
Chesapeake & Ohio Canal, Lock 34, Harpers Ferry Road, 61.6 miles above...
Survey number: HABS MD-766 Public domain image of ferry ship, historical photograph, free to use, no copyright restrictions image - Picryl description
Chesapeake & Ohio Canal, Lock 34, Harpers Ferry Road, 61.6 miles above...
Survey number: HABS MD-766 Public domain photograph - historical image of Ohio, United States, free to use, no copyright restrictions image - Picryl description
Delaware & Raritan Canal, Drawbridge, Lock & Tollhouse, Delaware & Rar...
Unprocessed Field note material exists for this structure: FN-272 Survey number: HABS NJ-359 Building/structure dates: ca. 1834 Initial Construction
Delaware & Raritan Canal, Drawbridge, Lock & Tollhouse, Delaware & Rar...
Unprocessed Field note material exists for this structure: FN-272 Survey number: HABS NJ-359 Building/structure dates: ca. 1834 Initial Construction
Delaware & Raritan Canal, Drawbridge, Lock & Tollhouse, Delaware & Rar...
Unprocessed Field note material exists for this structure: FN-272 Survey number: HABS NJ-359 Building/structure dates: ca. 1834 Initial Construction
Delaware & Raritan Canal, Drawbridge, Lock & Tollhouse, Delaware & Rar...
Unprocessed Field note material exists for this structure: FN-272 Survey number: HABS NJ-359 Building/structure dates: ca. 1834 Initial Construction
Delaware & Raritan Canal, Drawbridge, Lock & Tollhouse, Delaware & Rar...
Unprocessed Field note material exists for this structure: FN-272 Survey number: HABS NJ-359 Building/structure dates: ca. 1834 Initial Construction
Isaac A. Packer Farm, Farm House, Legislative Route 18011, 2.4 miles n...
Photo caption & data pages include site plan & floor plans. Significance: The farm house, erected in 1885, is significant for its style, materials, and relationship with other buildings on the property. The dis... More
Chesapeake & Ohio Canal, Lock Tender's House at Lock 50, 108.9 Miles a...
Unprocessed Field note material exists for this structure: FN-98 Survey number: HABS MD-216
St. Lucie Canal, Lock No. 1, Attendant's Quarters, St. Lucie, Cross St...
Significance: The attendants quarters were essential to the successful operation of the lock and dam. Their presence allowed the continual operation and maintenance of the facility. Survey number: HAER FL-20-A... More
James River & Kanawha Canal, Ben Salem Lock, Maury River, Lexington, L...
Significance: Located on the western bank of the Maury River (formerly the North River) approximately 1 mile downstream from its junction with the South River, the Ben Salem Lock is constructed out of rough and... More
Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent ...
Significance: Lock No. 2 is an example of a wood lock, many of which once existed along the original line of the Wabash and Erie Canal. More fragile than those supported by dressed stone, locks which were cons... More
Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent ...
Significance: Lock No. 2 is an example of a wood lock, many of which once existed along the original line of the Wabash and Erie Canal. More fragile than those supported by dressed stone, locks which were cons... More
Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent ...
Significance: Lock No. 2 is an example of a wood lock, many of which once existed along the original line of the Wabash and Erie Canal. More fragile than those supported by dressed stone, locks which were cons... More
Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent ...
Significance: Lock No. 2 is an example of a wood lock, many of which once existed along the original line of the Wabash and Erie Canal. More fragile than those supported by dressed stone, locks which were cons... More
Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent ...
Significance: Lock No. 2 is an example of a wood lock, many of which once existed along the original line of the Wabash and Erie Canal. More fragile than those supported by dressed stone, locks which were cons... More
Wabash & Erie Canal, Lock No. 2, 8 miles east of Fort Wayne, adjacent ...
Significance: Lock No. 2 is an example of a wood lock, many of which once existed along the original line of the Wabash and Erie Canal. More fragile than those supported by dressed stone, locks which were cons... More
514 West Main Street (House), Lock Haven, Clinton County, PA
Significance: Home of an early industrialist, Thomas R. Mann, a member of the third generation of the family who invented the Mann Axe. The Mann family, during the 1880s, were the most extensive manufacturers o... More
514 West Main Street (House), Lock Haven, Clinton County, PA
Significance: Home of an early industrialist, Thomas R. Mann, a member of the third generation of the family who invented the Mann Axe. The Mann family, during the 1880s, were the most extensive manufacturers o... More
Kanawha River Lock & Dam No. 11, Equipment House, West side, U.S. Rout...
Significance: This frame house, built by the U.S. Army Corps of Engineers in 1894, was constructed as a support structure for the Kanawha River Lock and Dam No. 11. Survey number: HABS WV-287-A Building/struc... More
DePere Lock & Dam, Fox River at James Street, De Pere, Brown County, W...
Significance: The De Pere Lock and Dam allows passage from Green Bay in Lake Michigan around rapids and into the Lower Fox River. The complex is the first link in a series of locks and dams that allows passage... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 24, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 24, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 24, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 24, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 24, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 24, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Allegheny Lift Lock No. 4 & Weigh Lock, North shore of Allegheny River...
Significance: The Allegheny Locks were among the few canal-related structures surviving in Pittsburgh. The locks are near the western terminus of the Pennsylvania Canal which has been determined to be of natio... More
Allegheny Lift Lock No. 4 & Weigh Lock, North shore of Allegheny River...
Significance: The Allegheny Locks were among the few canal-related structures surviving in Pittsburgh. The locks are near the western terminus of the Pennsylvania Canal which has been determined to be of natio... More
Allegheny Lift Lock No. 4 & Weigh Lock, North shore of Allegheny River...
Significance: The Allegheny Locks were among the few canal-related structures surviving in Pittsburgh. The locks are near the western terminus of the Pennsylvania Canal which has been determined to be of natio... More
Warren County Bridge No. 19005, Spanning Lopatcong Creek at Lock Stree...
Significance: The bridge crosses over the Lopatcong Creek and permits access from the Route 22 corridor to the east into the Town of Phillipsburg. The bridge, which is a steel Pratt Truss with pin connections,... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 8, On Mississip...
See HAER MN-20, Upper Mississippi River Nine-Foot Channel Project History, Locks and Dams 3-10, for additional information. Significance: The Upper Mississippi River Lock and Dam Project represents one of the l... More
Illinois Waterway, Peoria Lock and Dam, 1071 Wesley Road, Creve Coeur,...
Significance: The Peoria Lock and Dam site is significant as a component of the Illinois Waterway, which provided a navigable route from Lake Michigan to the Mississippi River and beyond. Peoria Dam is also si... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Alexander's Grist Mill, Lock 37 on Ohio & Erie Canal, South of Clevela...
Public domain photograph - historical image of Ohio, United States, free to use, no copyright restrictions image - Picryl description
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 26, Alton, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 26, Alton, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 26, Alton, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 26, Alton, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
Illinois Waterway, Dresden Island Lock and Dam , 7521 North Lock Road,...
Significance: The Dresden Island Lock and Dam site is significant as a component of the Illinois Waterway, which was developed to provide a navigable route from Lake Michigan to the Mississippi River and beyond... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...
Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 27, Granite...
Significance: ...Lock and Dam No. 27 constitute additions to the original Upper Mississippi Nine-Foot Channel Project, constructed after World War II. Lock No. 27, located on the Chain of Rocks Canal, provided... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 27, Granite...
Significance: ...Lock and Dam No. 27 constitute additions to the original Upper Mississippi Nine-Foot Channel Project, constructed after World War II. Lock No. 27, located on the Chain of Rocks Canal, provided... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 27, Granite...
Significance: ...Lock and Dam No. 27 constitute additions to the original Upper Mississippi Nine-Foot Channel Project, constructed after World War II. Lock No. 27, located on the Chain of Rocks Canal, provided... More
Upper Mississippi River 9-Foot Channel Project, Lock & Dam 27, Granite...
Significance: ...Lock and Dam No. 27 constitute additions to the original Upper Mississippi Nine-Foot Channel Project, constructed after World War II. Lock No. 27, located on the Chain of Rocks Canal, provided... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 4, Alma, Buffal...
Significance: This lock and dam was the first constructed as part of the Upper Mississippi River Nine-Foot Channel Project. It contains the standard items on most of the lock and dam structures in this project... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 4, Alma, Buffal...
Significance: This lock and dam was the first constructed as part of the Upper Mississippi River Nine-Foot Channel Project. It contains the standard items on most of the lock and dam structures in this project... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 4, Alma, Buffal...
Significance: This lock and dam was the first constructed as part of the Upper Mississippi River Nine-Foot Channel Project. It contains the standard items on most of the lock and dam structures in this project... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 4, Alma, Buffal...
Significance: This lock and dam was the first constructed as part of the Upper Mississippi River Nine-Foot Channel Project. It contains the standard items on most of the lock and dam structures in this project... More
Bonneville Project, Navigation Lock No. 1, Oregon shore of Columbia Ri...
Survey number: HAER OR-11-D Building/structure dates: 1937 Initial Construction
Bonneville Project, Navigation Lock No. 1, Oregon shore of Columbia Ri...
Survey number: HAER OR-11-D Building/structure dates: 1937 Initial Construction