Download or read book National Program for Inspection of Non Federal Dams McLeod Pond Dam MA 00046 Connecticut River Basin Colrain Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The McLeod Pond Dam consists of a series of earthen dikes and two concrete structures. The concrete structures are the main and auxillary spillways, each of which is positioned between outcrops of ledge. The age of the dam is unknown. Based on the irregularity of the configuration of the dikes and the differences in the concrete structures, it appears that the dam was constructed over a period of years. The concrete structures are in good to fair condition. The embankments are in fair to poor condition. There are no obvious signs of failure or seepage conditions, especially at the dikes, and low freeboard present at the dikes warrant remedial treatment within a year. Based on the size and hazard classification in accordance with the Corps of Engineers Guidelines, the spillway test flood falls between a 50-year flood and a 100-year flood. Hydraulic analysis indicates that the spillway will not pass the test flood without overtopping the earth embankments. However, both the dam and pond are quite small and the potential hazard, in the event of a dam failure, is very low. Additional investigations of the seepage at the dikes, the structural stability of the dikes and spillways and the method of providing additional freeboard at the dikes are recommended.

Download or read book National Program for Inspection of Non Federal Dams Kendall Company Number 1 Dam MA 00047 Connecticut River Basin Colrain Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1981 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kendall Company No. 1 Dam is a run of river facility that diverts water into a flume leading to the company's plant. Within the river channel there is a rock-filled, timber crib spillway structure 238 feet long. This overflow structure has a topwidth of 5 feet, and it has 2.9-foot high flashboards on its crest. The height of the dam, measured at the abutments of the spillway overflow section, is 24 feet. Based on visual inspection, the dam is judged to be in poor condition. The major concerns with respect to the integrity of the dam are deterioration of the wood crib abutment structure at the right end of the overflow section; trees growing in the wood crib abutment structure, on the upstream and downstream sides of the right abutment and on the dike; hazards resulting from the existing breach in the dike; lack of adequate erosion protection on the bank of the downstream channel near the left abutment; trees growing on the strip of ground between the dry stone masonry wall, on the left side of the downstream channel, and the right side of the concrete-lined flume on the left side of the valley; and lack of a low-level outlet for the dam. The spillway capacities are, respectively, about 22 percent and 38 percent of the routed test flood outflows. The depths of overtopping of the dam and dike that would occur during the test flood are 4.2 feet with the flashboards in place, and 3.5 feet with the flashboards removed.

Download or read book National Program for Inspection of Non Federal Dams Whiting Street Pond Dam MA 00070 Connecticut River Basin Holyoke Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whiting Street Pond Dam is an earth-buttresed stone masonry dam, 1900 feet long with a maximum height of about 19 feet. A two level stone masonry and concrete spillway is located about 70 feet from the dam's south abutment. A gatehouse and gate chamber are located at approximately the center of the dam and contain the operating mechanisms for controlling the outflows into the City's Water Supply and to the low level outlet. Discharges from the low level outlet and the spillway converge and flow into an unnamed creek before emptying into the Connecticut River. Phase I inspection and evaluation of Whiting Street Pond Dam does not indicate conditions which would constitute an immediate hazard to human life or property. Based on engineering judgement and the performance of the dam and the outlet works, the project is considered to be in fair condition. The project, however, does have a number of deficiencies which, if not remedied, have the potential for developing into hazardous conditions. The test flood, in accordance with Corps of Engineers guidelines, is the Probable Maximum Flood (PMF). The PMF yields an outflow of 8253 cfs which is greater than the maximum discharge capacity of the spillway of 215 cfs and would result in overtopping of the dam by about 1.4 feet.

Download or read book National Program for Inspection of Non Federal Dams Powder Mill Pond Dam MA 00092 Connecticut River Basin South Barre Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder Mill Pond Dam is located on the Ware River approximately one mile upstream of South Barre, Massachusetts. The dam, reconstructed in 1908 to generate electric power for the Barre Wool Combing Company, consists of an upgated concrete spillway approximately 125 ft. long and 20 ft. high, a short emergency spillway and an outlet canal with two inoperative timber gates. The dam was extensively modified during the 1930's. Based on a visual examination of the structure, the facility is in fair to poor condition. Nevertheless, there was no evidence of structural failure or other conditions which would warrant urgent remedial treatment. Based on size and hazard classifications in accordance with Corps of Engineers guidelines, the test flood for this dam is the Probable Maximum Flood (PMF). The PMF outflow of 48,160 cfs would overtop the dam by 5.15 ft. With the water level at top of dam, the main and emergency spillways can pass 17,940 cfs which is 37 percent of the test flood.

Download or read book National Program for Inspection of Non Federal Dams Indian Orchard MA 00722 Connecticut River Basin Springfield Ludlow Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1979 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is generally comprised of a 401-foot long, 10 to 28 foot high main spillway, a head gate building, an overflow canal spillway and a canal leading to two 8 foot diameter penstocks used in electrical power generation. There are two inoperable gates located in the main dam. The dam is normally operated with two feet of flashboards above the spillway crest. The visual inspection did not disclose any findings that indicate an immediate unsafe condition. The 1 /2 PMF test flood used will produce an inflow/outflow of 70,830 cfs. The dam is a run-of-the-river type and the spillway crest would be overtopped by about 14 feet. The spillway has a capacity of 29,500 cfs (42 percent of 1/2 PMF outlfow) at elevation 166.6, top of non-overflow section. The non-overflow section is overtopped by about six feet. This flow would not overtop the upstream training walls which are at elevation 174.0. The overall condition of the dam is considered fair due to the lack of adequate draw down capacity. Remedial measures consist of removing vegetation from the downstream face of the dam, further observation of seepage at the right abutment, repair the wooden crest cover, and develop a formal warning system to warn downstream areas in case of an emergency.

Download or read book National Program for Inspection of Non Federal Dams Congamond Lakes Outlet Middle Pond MA 00071 Connecticut River Basin Southwick Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1979 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dam is comprised of two earth embankments with a central twin 8 foot wide concrete box culvert with concrete training walls. The inspection indicated the dam to be in generally good condition. The dam has a size classification of intermediate and a hazard classification of low. The test flood would be one-half the PMF.

Download or read book National Program for Inspection of Non Federal Dams Ashfield Pond Dam MA 00523 Connecticut River Basin Ashfield Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ashfield Pond Dam is an earth embankment about 775 feet long with a maximum height of about 15 feet. A 30 foot long, 14.5 foot high stone masonry and concrete stepped spillway is located about 110 feet from the east abutment. A rectangular concrete low level outlet, 4 feet wide and 1.7 feet high is located at the east end of the spillway. Phase I inspection and evaluation of Ashfield Pond Dam does not indicate conditions which would constitute an immediate hazard to human life or property. Based on enginnering judgment and the performance of the earth embankment and the outlet works, the project is considered to be in fair condition. The project has a number of deficiencies which, if not remedied, have the potential for developing into hazardous conditions. Selection of 1/2 PMF as the test flood, yields an outflow of 1698 cfs (assuming the low level outlet is closed), which is greater than the maximum spillway discharge capacity of 965 cfs and would result in an overtopping of the dam by about 0.43 feet.

Download or read book National Program for Inspection of Non Federal Dams McLean Reservoir MA 00539 Connecticut River Basin Holyoke Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1979 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a 700 foot, 35 foot high earthfill embankment and a 920 foot long, 15 foot high earth-fill dike a gatehouse with outlet controls and a 10 foot wide concrete arch emergency spillway. With the water lever assumed to spillway crest at time of test flood, spilway discharge of about 30 cfs woudl occur. The reservoir woudl be surcharged to elevation 433, four feet above the spillway crest and two feet below the dam crest. The dam will not be overtopped. The dam is generally in fair condition. Remedial measures consist of removal of all brush and trees from the downstream slope of the main dam and spillway channel and repair of spalled and deteriorated concrete on the emergency spillway.

Download or read book National Program for Inspection of Non Federal Dams Woronoco Mills 60 Feet Dam MA 00738 Woronoco Mills 29 Feet Dam MA 00737 Connecticut River Basin Russell Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1979 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dams are in fair condition, due to the potential overtopping of the dams during the occurrence of the test flood and the reported overtopping of the dams during prior floods. There is some eroding of concrete joints in the dam, deteriorated concrete on appurtenant structures and observed seepage both from the joints in the concrete and from the embankments. The east dike is heavily overgrown with brush and young trees. Hydraulic analysis indicates that the test flood stage would be at elevation 240.3 which is approximately 4.3 feet above the top of the right embankment. Approximately 95 percent of the test flood would pass over the 60 foot dam, 29 foot dam and the small dam spillways. The remaining flow would be over the right embankment between the screen house and the mill building.

Download or read book National Program for Inspection of Non Federal Dams Congamond Lakes North Dike MA 00072 Connecticut River Basin Southwick Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1980 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Congamond Lakes North Dike impounds North Pond which is one of the three ponds which make up the Congamond Lakes. All of the three ponds, North Pond, South Pond and Middle Pond are interconnected by culverts or bridges. Together the three ponds are approximately three miles long and up to one-third mile wide with a total surface area of about 465 acres. The North Dike was constructed to replace an earlier dike (which plugged an old canal) and which failed in 1955. The North Dike is approximately 80 feet long with a maximum height of 29 feet. The present condition of the dike is fair. There is no spillway nor regulating gates at North Dike. The present outlet for the lakes is at Middle Pond where Berkshire Avenue crosses Great Brook about 2 miles to the south of North Dike. During annual floods, the direction of flow in Great Brook reverses itself and flows back towards Congamond Lakes. The outlet structure at Berkshire Avenue has stoplogs which are inserted to prevent Great Brook from flooding back into the lakes. While the stoplogs are in place, Congamond Lakes has no outlet. After the flood stage of Great Brook recedes, the stoplogs are removed and Congamond Lakes are allowed to drain. The PMF inflow into Congamond Lakes, assuming that the stoplogs are in place at Berkshire Avenue would cause the lake level to rise to approximate elevation 232 MSL which is about 2 feet below the top of the dike.

Download or read book National Program for Inspection of Non Federal Dams South Barre Mill Pond Dam MA 00091 Connecticut River Basin South Barre Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: The South Barre Mill Pond dam is a small dam consisting of two adjacent concrete ogee spillways, a short earth embankment on the right side and an outlet works to a penstock at the left abutment. The present dam, constructed about 1904, was extensively damaged in the floods of 1936 and 1938 and has been reconstructed on several occasions, the latest work in 1944. The dam is in fair to good condition. There are no obvious signs of failure or conditions which would warrant urgent remedial treatment. Hydraulic analyses indicate that the spillway will not pass one-half the probable maximum flood and the spillway is considered inadequate, Recommendations for remedial work include repair of concrete at the left training wall and right spillway weir and restoration of gates to good operating condition. Additional investigation of the right spillway weir is recommended, since no data are available concerning this portion of the structure.

Download or read book National Program for Inspection of Non Federal Dams Snow Pond Dam MA 00079 Connecticut River Basin Ware Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snow Pond dam is approximately 200 ft. long overall, and consists of a small earth embankment approximately 6 ft. high, an ungated concrete ogee spillway, a section of earth fill retained by concrete and stone masonry walls and a 6-ft. diameter outlet pipe. The dam is in fair condition. There are no obvious signs of failure or conditions which would warrant urgent remedial treatment. Hydraulic analyses indicate that the spillway cannot pass either one-half the probable maximum flood or the 100-year flood and the spillway is considered inadequate. Recommendations for remedial work include earthwork to restore embankment grades, structural repair of the control gate to the outlet conduit and reconstruction of certain retaining walls. Work should be designed and constructed as soon as practical under the supervision of a registered professional engineer.

Download or read book National Program for Inspection of Non Federal Dams Cook Pond Dam MA 00123 Blackstone River Basin Worcester Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Program for Inspection of Non Federal Dams Singletary Pond Dam MA 00144 Blackstone River Basin Millbury Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1979 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Program for Inspection of Non Federal Dams Lake Whittemore Dam MA 00699 Connecticut River Basin Spencer Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Whittemore Dam is approximately 300 ft. long. It consists of a small earth embankment approximately 15 ft. high and an ungated concrete ogee spillway weir. The dam is generally in fair to good condition. There are no obvious signs of failure or conditions which would warrant urgent remedial treatment. Hydraulic analyses indicated that the spillway will pass the spillway design flood without overtopping the dam. The spillway design flood selected for this structure was the probable maximum flood. Recommendations for remedial work include clearing of trees and brush, repair of the downstream fieldstone wall and dry-laid stone wall adjacent to the gate valve, and minor earthwork and rip-rap repairs.

Download or read book National Program for Inspection of Non Federal Dams Upper Wilson Pond Dam NH 00202 Connecticut River Basin Swanzey New Hampshire Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1981 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is constructed of reinforced concrete and earth fill. It is about 225 ft. long and 16.6 ft. high. The dam is small in size with a high hazard potential. The dam is in poor condition at the present time. The spillway is capable of passing 5% of the Test Flood routed peak outflow. (Author).

Download or read book National Program for Inspection of Non Federal Dams Whitney Pond MA 00633 Connecticut River Basin Winchendon Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1979 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is comprised of an 82 foot long stone masonry spillway, a 450 foot earth embankment to the left of the spillway, and a 30 foot earth embankment to the right of the spillway. The spillway can pass 7 percent of this flow. The dam would be overtopped by 6 feet. The dam is in generally good condition. It is felt, however, that certain normal maintenance and operational procedures need attention. These include removal of brush and trees on the upstream and downstream slopes; development of a formal warning system and monitoring of the condition of the downstream training wall. Also repairs to the walkway over the spillway are required.