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.

Lake Winnemaug Dam is an earth embankment approximately 500 feet long with a maximum height of about 15 feet. The upstream slope of the embankment is approximately 1H:1V and the downstream slope is about 1.5H:1V. The top of the dam is about 20 feet wide and it is a paved road. The overflow drop spillway is located about 100 feet from the right abutment and consists of an 18.5-foot long concrete weir, a cascading step section and a 4-foot high by 10-foot wide culvert through the embankment. The original purpose of the dam is unknown; however, the lake is currently used for recreation purposes. The peak test flood inflow for Lake Winnemaug Dam is 3,460 cfs. The routed test flood outflow of 2,010 cfs overtops the dam by about 0.8 feet. The spillway is capable of discharging 770 cfs or about 38 percent of the routed test flood outflow prior to overtopping of the dam. A breach of the dam would result in a 7.8-foot increase in the stream depth (3.8 feet above the channel banks) at the initial downstream damage area. The dam appears to be in poor condition. Numerous structural deficiencies, such as slope failures, seepage, and toe erosion were observed during the visual inspection. The embankment is overgrown with brush and trees and contains a number of rodent holes. The reservoir cannot be drained in an emergency because the outlet pipe control valve is inoperable.

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.

The West Branch Dam consists of, from right to left, a 100 foot long earth embankment with an intake structure to a downstream canal, a 107 foot long concrete ogee section, and a 160 foot long earth embankment with a concrete core wall. The intake structure to the downstream canal contains two 42-inch sluice gates which discharge to the canal. The canal is separated from the river channel by an earth embankment which contains a 34 foot long auxilliary spillway. This spillway discharges into the river downstream of the dam. In the past, water from the canal would flow through a 36-inch reinforced concrete pipe (RCP) to a downstream manufacturing plant. The low level outlet, or blow-off, consists of a 48-inch RCP located to the left of the main spillway section and is controlled by a manually operated sluice gate. The dam has an overall length of 370 feet and a maximum height of 22 feet. The dam appears to be in fair condition and requires some work. The West Branch Dam has a tributary watershed of 33.3 square miles. The pond has a water surface area of 5.5 acres and a storage capacity with water level at the crest of the dam of 72 Acre-Feet. The main spillway has a capacity of about 8,200 cfs before overtopping the right portion of the dam.

The Echo Lake Dam consists of an earth embankment with a maximum height of 18 feet, a top width of 12 feet and an overall length of 220 feet, including a 32 foot wide bituminous concrete auxiliary spillway located near the left abutment. The main spillway consists of a morning glory (drop inlet) type spillway located near the center of the dam. The outlet works consist of a 12-inch cast iron low level outlet or blowoff controlled by a manually operated gate valve located in the riser pipe of the morning glory type spillway. The dam impounds Echo Lake, which is used for swimming and fishing by residents of Watertown. 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 continued erosion of the upstream and downstream slopes, seepage through the dam, and continued deterioration of the auxiliary spillway. The Test Flood inflow is 615 cfs and the Test Flood routed outflow is 510 cfs, overtopping the dam by 0.1 feet. The auxiliary spillway capacity with the water level at the top of the dam is 400 cfs and is equal to 78 percent of the Test Flood routed outflow. The capacity of the morning glory type spillway was neglected because of the potential for clogging.

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.