National Program For Inspection Of Non Federal Dams Baker Floodwater Reservoir Site 11a Nh 00247 Nhwrb Number 24914 Merrimack River Basin Wentworth New Hampshire Phase I Inspection Report

Baker Floodwater Reservoir Site 11A is a 640 foot long 24 foot high earthen structure. There is one fill zone in the dam which includes a cutoff wall. Top width of the dam is 12 feet. The upstream and downstream embankments are on a 3 horizontal to 1 vertical slope. Appurtenant structures consist of a principal spillway, plunge pool stilling basin and emergency spillway. The visual inspection revealed that the dam is in good condition. The inspections also revealed random surface cracks and scaling of the concrete on the riser structure. It is small in size with a high hazard potential classification. Keywords include: Inspection, Dam safety, Merrimack River Basin, Wentworth, New Hampshire, and Tributary to Baker River.

The dam is a 691 ft. long 24 ft. high earthen structure. The dam is judged to be in good condition. There were a few items noted during the inspection which require attention. It is small in size with a significant hazard potential. There are no other recommendations resulting from the inspection. (Author).

The dam is a 807 ft. long 48 ft. high earthen structure. The dike is an earthen structure about 600 ft. long and 11.5 ft. high. The inspection revealed both the dam and dike to be in good condition. There were no recommendations for the dam after this inspection. The dam is intermediate in size with a significant hazard potential. (Author).

The dam is an earthen structure consisting of homogeneous silty sand and earth fill on a bedrock foundation. The inspection revealed that the dam is in good condition. It is intermediate in size with a significant hazard classification. There are various remedial measures which should be implemented by the owner. (Author).

The dam is a 805 ft. long, 68 ft. high earthen embankment structure with three different fill zones. The visual inspection indicated that the dam is in good condition. The inspection revealed minor deterioration of concrete on the riser structure and at the end of the 4 ft. diameter outlet pipe. It is intermediate in size with a high hazard potential. There are no recommendations for the dam based on the inspection report. (Author).

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.

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).

The dam is a stone-filled, concrete capped gravity overflow structure about 20 ft. high and 267 ft. long. The dam is considered to be in poor condition. It is small in size with a high hazard classification. There are a few major concerns which must be attended to. The potential for the loss of more than a few lives and extensive economic loss would exist. (Author).

The dam is an earth embankment dam 695 ft. long and 69 ft. high. It is intermediate in size with a high hazard potential. The test flood for the dam is the PMF. The dam is in good condition at the present time. There are various remedial measures which should be implemented by the owner. The program of annual technical inspections should be continued. No conditions were observed which require further investigations.

Mountain Pond Dam is located on the north end of Mountain Pond in Sanbornton, N.H., in mountainous terrain two miles south of the village of New Hampton. The dam is an earth embankment, 97 feet long and 14 feet high with a gated 8-inch outlet. The impoundment stores the water supply for the Town of New Hampton and is also the fire protection reserve. It is small in size with a low hazard potential. The test flood is in the range of a 50 to 100 year frequency. The condition of the dam is considered to be fair, requiring that modifications be made by the owner within 1-2 years after receipt of this inspection report. Keywords include: Inspection, Dam safety, Merrimack River Basin, Sanbornton, New Hampshire, and Tributary of Pemigewasset River.