Download or read book National Program for Inspection of Non Federal Dams Massabesic Lake Dam NH 00103 Merrimack River Basin Manchester New Hampshire 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 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a large concrete and stone masonry dam with earth embankments. The overall length is about 500 ft. with a maximum height of 27 ft. The dam is assessed to be in poor condition. Problems include structural cracking of an unknown origin, embankment seepage, and low spillway capacity. A test flood of 23,700 cfs inflow into the reservoir would overtop the dam by about 3.2 ft. (Author).
Download or read book National Program for Inspection of Non Federal Dams Merrymeeting Lake Dam NH 00342 Merrimack River Basin New Durham New Hampshire 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 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is an earth embankment structure. The dam is 286 ft. long and 22 ft. high. The condition of the dam is fair in spite of a continued history of seepage through the dam that has not been eliminated by refacing the upstream side of the dam. The estimated PMF would overtop the dam by 6.6 ft. (Author).
Download or read book National Program for Inspection of Non Federal Dams Merrimack Village Dam NH 00115 Merrimack River Basin Merrimack New Hampshire 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 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concrete dam is about 180 ft. long and is constructed on a circular arc. It is small in size with a low hazard potential classification. The dam is in fair condition. At the present time, there is no way to draw down the level of the reservoir. A program of annual technical inspections of the dam should be undertaken.
Download or read book National Program for Inspection of Non Federal Dams Pleasant Lake Dam NH 00362 NHWRB 176 02 Merrimack River Basin New London New Hampshire 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 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a 404 ft. long, earth-filled rock crib which incorporates a 58 ft. long spillway and a 42 inch diameter steel pipe outlet controlled by a stoplog weir. It is intermediate in size with a significant hazard potential. The dam is in poor condition at the present time. The dam requires considerable maintenance. (Author).
Download or read book National Program for Inspection of Non Federal Dams Souhegan River Watershed Dam Number 26 NH 00207 NHWRB 234 08 Merrimack River Basin Temple New Hampshire 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 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Souhegan River Watershed Dam No. 26 is located on Blood Brook, a tributary of the Souhegan River, approximately 2 miles upstream of West Wilton, New Hampshire. The dam is an earth embankment 692 feet long and 79 feet high with a drop inlet service spillway structure and a 30 inch outlet conduit. An emergency spillway 320 feet wide is cut into the left abutment.
Download or read book National Program for Inspection of Non Federal Dams Highland Lake North Outlet NH 00238 NHWRB 245 07 Merrimack River Basin Washington New Hampshire 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 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is intermediate in size with a low hazard potential. The hydraulic analyses indicated that the spillway test flood in Highland Lake is 11800 cfs, of which the North Outlet would experience 3950 cfs. It is recommended that the refined hydrological analyses elsewhere recommended for Highland Lake's South Outlet be undertaken. (Author).
Download or read book National Program for Inspection of Non Federal Dams Crystal Lake Dam NH 00018 NHWRB Number 91 11 Merrimack River Basin Gilmanton New Hampshire 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 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a 188 ft. long, 16 ft. high earth embankment dam. The condition is fair. The visual inspection did not disclose any immediate safety problems. The dam's spillway will not pass the test flood, therefore it is recommended that the owner engage a qualified engineer to evaluate further the potential for overtopping the inadequacy of the spillway. (Author).
Download or read book National Program for Inspection of Non Federal Dams Kelleys Falls Dam NH 00299 NHWRB No 150 02 Merrimack River Basin Manchester New Hampshire 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 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kelleys Falls Dam is a run of the river type dam, with an overall length of 503 feet. Visual inspection of the dam indicated that the dam is in poor condition. The inspection revealed a number of leaks through the mass concrete spillway section, considerable loss of concrete from the spillway section, seepage around the concrete wall on the right side of the dam, and general deterioration of concrete on the abutments and hydro-building. Based on the intermediate size of the dam and the significant hazard classification and in accordance with Corps of Engineers guidelines, the test flood is one half the Probable Maximum Flood (PMF) or 55,900 cfs. The one half PMF outflow overtops the dam by 6.8 feet. With the water level at the top of the dam, the spillway will pass 38 percent of the test flood outflow. It is recommended that the owner engage a qualified engineer to make thorough investigation of the condition of the foundation of the spillway section of the dam, investigate the structural stability of the spillway section and ways to increase the spillway capacity. Also, the owner should remove the flashboards on the dam immediately. Additional keywords: Merrimack River Basin, Manchester, and New Hampshire.
Download or read book National Program for Inspection of Non Federal Dams Harris Pond Dam NH 00122 Merrimack River Basin Nashua New Hampshire 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 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a 450 ft. long, 35 ft. high earthfill dam with cemented rubble stone masonry core walls. The dam is intermediate in size with a significant hazard potential. The test flood is taken as 1/2 of the PMF. Generally the dam is in fair condition. (Author).
Download or read book National Program for Inspection of Non Federal Dams Bowers Dam NH 00330 NHWRB Number 165 04 Merrimack River Basin Nashua New Hampshire 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 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is an earthen embankment about 420 ft. long with a maximum height of about 25 ft. The dam impounds water from the Brook and the spillway discharges to Harris Pond immediately below the dam. The dam is considered to be in fair condition. It is intermediate in size with a significant hazard potential. (Author).
Download or read book National Program for Inspection of Non Federal Dams Lake Gardner Dam MA 00152 Merrimack River Basin Amesbury 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 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Program for Inspection of Non Federal Dams Mirror Lake Dam N H 00317 State Number 259 07 Merrimack River Basin Woodstock New Hampshire 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 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mirror Lake Dam is a concrete gravity dam housing two stoplog spillway bays with earth embankments extending to the east and west of the concrete structure. It is 290 ft. long with a hydraulic height of 11.5 ft. The dam is in poor condition. Trees and brush growing on the embankments, and a lack of erosion protection on the upstream slopes and crests of both embankments are of major concern. It is small in size with a significant hazard potential. Keywords include: Visual inspection, Dam safety, Merrimack River Basin, Woodstock New Hampshire, and Tributary to Hubbard Brook.
Download or read book National Program for Inspection of Non Federal Dams Crescent Lake Dam NH 00309 NH No Name 107 Merrimack River Basin Wolfeboro New Hampshire 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 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a cut stone masonry dam with a central timber section. The dam is 131 ft. long and 14.7 ft. high. The spillway of the dam is considered to be inadequate in that it can only pass 26% of the spillway test flood without overtopping the dam. There are remedial actions which should be implemented by the owner within one year of the receipts of this report.
Download or read book National Program for Inspection of Non Federal Dams Lake Franklin Pierce Dam NH 00199 NHWRB 116 04 Merrimack River Basin Hillsboro New Hampshire 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 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Franklin Pierce Dam consists of a central concrete gravity ogee spillway with earth dike embankments. Total length is 1,870 ft. and maximum height is 43 ft. The dam is assessed to be in fair condition. No serious problems were detected, although some suspicious seepage was noted which should be monitored closely. Overtopping potential is considered high. Keywords include: Visual inspection, Dam safety.
Download or read book National Program for Inspection of Non Federal Dams Pleasant Lake Dam NH 00179 State Number 61 01 Merrimack River Basin Deerfield New Hampshire 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 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is about 11 ft. high, and is about 1180 ft. long. The dam is in fair condition. It has an inadequate spillway discharge capacity. The stoplog spillway weir will pass 85 cfs, or about 4% of the test flood. There are various items which should be implemented by the owner. (Author).
Download or read book National Program for Inspection of Non Federal Dams Lake Wampanoag Dam MA 00010 Merrimack River Basin Ashburnham 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 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Wampanoag Dam is approximately 660 feet long including the spillway and has a maximum height of approximately 22 feet. It consists of an earth embankment with riprap at the upstream face and a loamed and seeded crest and downstream face. Based on the size classification (intermediate) and hazard potential classification (high), the spillway test flood is the PMF.
Download or read book National Program for Inspection of Non Federal Dams Souhegan River Watershed Dam Number 19 NH 00475 NHWRB 175 19 Merrimack River Basin New Ipswich New Hampshire 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 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is about 720 ft. long and 35.5 ft. high. It is intermediate in size with a high hazard potential. In the event of failure of the dam, there is the potential of significant property damage and loss of life could result. The dam is in good condition at the present time. No conditions were observed which require additional investigation. There are a few remedial measures which should be implemented by the owner.
