National Program for Inspection of Non-Federal Dams. Waterbury Reservoir Number 2 Dam (CT 00304), Naugatuck River Basin, Prospect, Connecticut. Phase I Inspection Report

National Program for Inspection of Non-Federal Dams. Waterbury Reservoir Number 2 Dam (CT 00304), Naugatuck River Basin, Prospect, Connecticut. Phase I Inspection Report
Title National Program for Inspection of Non-Federal Dams. Waterbury Reservoir Number 2 Dam (CT 00304), Naugatuck River Basin, Prospect, Connecticut. Phase I Inspection Report PDF eBook
Author CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher
Pages 79
Release 1980
Genre
ISBN

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Waterbury Reservoir No. 2 Dam consists of an earth embankment with a downstream stone masonry wall. The dam has a top width of 22 feet, a maximum height of 20 feet, and an overall length of 230 feet including a 40 foot long overflow spillway located near the left end of the dam. The outlet works consist of a gate chamber at the right of the spillway, and a 12-inch cast iron pipe extending approximately 100 feet downstream of the dam. The dam impounds Waterbury Reservoir No. 2 which was formerly used as a storage reservoir for public water supply and currently serves no formal purpose. Based on the visual inspection, the dam is judged to be in poor condition. Features that could affect the future integrity of the dam are seepage at the base of the masonry wall and downstream of the dam; erosion of the upstream slope and crest; and the inaccessibility of the low level outlet or blowoff gates. The spillway capacity with the water level at the top of the dam is 410 cfs and is equal to 156 percent of the test flood routed outflow.

National Program for Inspection of Non-Federal Dams. Belleview Lake Dam (CT 00642), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report

National Program for Inspection of Non-Federal Dams. Belleview Lake Dam (CT 00642), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report
Title National Program for Inspection of Non-Federal Dams. Belleview Lake Dam (CT 00642), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report PDF eBook
Author CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher
Pages 73
Release 1979
Genre
ISBN

Download National Program for Inspection of Non-Federal Dams. Belleview Lake Dam (CT 00642), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report Book in PDF, Epub and Kindle

Belleview Lake Dam is a 229 foot long rubble masonry gravity dam and has a maximum height of 34 feet, with the spillway located on the right side of the embankment. The visual inspection of Belleview Lake Dam indicated that the dam is in poor condition. There are numerous instances where mortar has been removed from joints. The inspection revealed that extensive seepage occurs across the entire downstream face of the dam. Erosion was observed on the left abutment and seepage was also seen above elevation of the dam crest. Also, at the junction of the left abutment and the downstream face of the dam a 10 foot erosion channel is located which is filled with boulders, trees and rubbish. A similar erosion channel is located on the right side of the dam where seepage water flows down the slope. Numerous trees up to one foot in diameter are found on both abutments and along the toe of the dam. The spillway channel contains debris and trees and erosion has occurred to downstream channel walls. There is no apparent operable outlet to the reservoir. The spillway will discharge 95 cfs or 7% of the test flood with the pool level with the top of the dam. The test flood flow of 1430 cfs will overtop the dam by 1.5 feet. Also, the masonry construction of the dam would probably do some overtopping without significant damage.

Government Reports Announcements & Index

Government Reports Announcements & Index
Title Government Reports Announcements & Index PDF eBook
Author
Publisher
Pages 492
Release 1984-11
Genre Science
ISBN

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National Program for Inspection of Non-Federal Dams. East Brass Mill Dam CT 00031, Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report

National Program for Inspection of Non-Federal Dams. East Brass Mill Dam CT 00031, Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report
Title National Program for Inspection of Non-Federal Dams. East Brass Mill Dam CT 00031, Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report PDF eBook
Author CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher
Pages 96
Release 1980
Genre
ISBN

Download National Program for Inspection of Non-Federal Dams. East Brass Mill Dam CT 00031, Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report Book in PDF, Epub and Kindle

The East Brass Mill Dam, also known as Scovill dam, consists of an earth embankment with a maximum height of 25 feet, a top width of approximately 15 feet, an upstream slope of 2 horizontal to 1 vertical and a downstream slope of 1.7 horizontal to 1 vertical. The dam is 420 feet long, including a 101 foot concrete ogee spillway section located near the left end of the dam. The freeboard from the spillway crest to the top of the left embankment is 5.4 feet. Flashboards, 1.6 feet in height are normally in place, reducing the freeboard to 3.8 feet. The outlet works located to the right of the spillway consist of a control tower or gate house with a high and low. Level inlet which discharges through two 24-inch outlet sluice gates to a 2-Ft.-3- in high by 4-Ft. wide sluiceway that outlet to the downstream face of the spillway. The spillway has a capacity of 4,000 cfs without flashboards and 1,900 cfs with flashboards before overtopping the low point of the dam crest. With the flashboards in place the spillway can pass 11 percent of the Test Flood. Without flashboards the spillway can pass 24 percent of the Test Flood. Without the flashboards in place, the Test Flood would overtop the low point of the dam crest by 3.6 feet.

National Program for Inspection of Non-Federal Dams. Seymour Reservoir Dam Number 2 (CT 00324), Naugatuck River Basin, Oxford, Connecticut. Phase I Inspection Report

National Program for Inspection of Non-Federal Dams. Seymour Reservoir Dam Number 2 (CT 00324), Naugatuck River Basin, Oxford, Connecticut. Phase I Inspection Report
Title National Program for Inspection of Non-Federal Dams. Seymour Reservoir Dam Number 2 (CT 00324), Naugatuck River Basin, Oxford, Connecticut. Phase I Inspection Report PDF eBook
Author CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher
Pages 101
Release 1980
Genre
ISBN

Download National Program for Inspection of Non-Federal Dams. Seymour Reservoir Dam Number 2 (CT 00324), Naugatuck River Basin, Oxford, Connecticut. Phase I Inspection Report Book in PDF, Epub and Kindle

The Seymour Reservoir No. 2 Dam consists of an earth embankment with a masonry core wall. The dam is approximately 900 feet long with a top width of 10 feet and a maximum height of 31 feet. A 25.75 foot long concrete overflow spillway is located near the right end of the dam. The outlet works consist of a 12-inch cast iron low level outlet or blowoff pipe through the embankment, controlled by a downstream gate valve. In addition to the main dam, a low dike is located on the right side of the reservoir. The earth dike is approximately 800 feet long with an average height of 6 feet and a top width of 15 feet. Based on the visual inspection and a review of all available pertinent data, the condition of the dam is judged to be fair. The future integrity of the dam can be affected by deterioration of the floor of the spillway channel; seepage exiting downstream of the dam; the absence of an upstream gate on the low level outlet or blowoff line; and inadequate spillway capacity. The spillway has a capacity of 500 cfs without any flashboards and 100 cfs with flashboards before overtopping the low point of the dam crest. With flashboards, the spillway can pass 18 percent of the routed Test Flood outflow. Without any flashboards the spillway can pass 91 percent of the routed Test Flood outflow and the outflow would overtop the low point of the dam crest by 0.2 feet.

Government reports annual index

Government reports annual index
Title Government reports annual index PDF eBook
Author
Publisher
Pages 1140
Release 199?
Genre
ISBN

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National Program for Inspection of Non-Federal Dams. Pritchards Pond Dam (CT 00033), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report

National Program for Inspection of Non-Federal Dams. Pritchards Pond Dam (CT 00033), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report
Title National Program for Inspection of Non-Federal Dams. Pritchards Pond Dam (CT 00033), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report PDF eBook
Author CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher
Pages 48
Release 1980
Genre
ISBN

Download National Program for Inspection of Non-Federal Dams. Pritchards Pond Dam (CT 00033), Naugatuck River Basin, Waterbury, Connecticut. Phase I Inspection Report Book in PDF, Epub and Kindle

Pritchards Pond Dam is an embankment dam formed by Pearl Lake Road. It has a total length of 249 feet and a maximum height of 8.7 feet. The exact age of the dam is not known but it is believed to be at least 100 years old. There is a no longer functioning outlet box located on the right side of the dam that presumably controlled a 6-inch cast iron outlet pipe on the downstream side of the dam. There is a bar screen and 4 foot wide overflow spillway located in the center of the dam. This spillway drops down to a 15-inch pipe which outlets at the downstream side of the dam. The downstream side has a stone masonry wall along approximately 90 feet of the dam's length, with varying heights. The dam is owned and operated by the Risdon Manufacturing Company, 2100 South Main Street, Waterbury, Connecticut. Although it once augmented the plant's water supply, it no longer is used for that purpose. Any present uses are strictly recreational. The dam appears in good shape but requires some work. Specifically, this would include developing a functioning outlet works, spillway maintenance and removal of trees on or close to the dam.