Dam construction

LANSING, Mich (AP) State investigators and contractors started assessing the remaining portion of a Michigan dam whose failure this spring contributed to millions of dollars in flood damage and destroyed more than 100 houses. The state said Aug. 10 that it is taking over the assessment after the owners failed to comply with a federal court order to determine what additional work might be needed to stabilize the Edenville Dam and ensure the safety of residents in the Midland County area.

Hurricane Harvey caused extensive damage in Texas and Louisiana during August 2017, including major devastation to the Vernon Lake dam and spillway in Vernon, La., which is the subject of a $1 million Louisiana Department of Transportation and Development (LADOTD) repair project.

SACRAMENTO, Calif. (AP) In an unusual reversal, federal regulators agreed to cover about $300 million in repair costs at the Oroville Dam, where a spillway collapse three years ago prompted the evacuation of nearly 190,000 people in Northern California.

The state with the highest percentage of high-hazard dams in the country — New Mexico — was recently awarded $100 million to help fix these troublesome barriers. The plan was approved last month amid an urgent call to upgrade facilities over fears of the loss of life in the event of a dam failure.

AMSTERDAM, N.Y. (AP) The Harrower Pond Dam, cracked and crumbling, with saplings sprouting from its walls, has been repeatedly cited by state and federal inspectors for safety violations over the past four decades. But repairs are unlikely anytime soon because nobody accepts ownership of the 150-year-old dam at a former mill site.

CONCORD, N.H. (AP) Merrymeeting Lake is like so many others in the New Hampshire woods, a bucolic summer getaway of cabins and second homes where vacationers sail, swim and fish. Like dozens of other lakes in the state, it also has a problem that is hidden from most of the people who come to enjoy it.

The Waterbury Dam, which was built in 1938 and repaired numerous times, most recently in 2007, needs additional work, which may be completed if it receives federal funding. Sen. Patrick Leahy said money for repairs is included in a $20 million appropriation included in the Senate's Energy and Water Appropriations bill, which must be approved by the full Congress and signed by the president.

After 15 years in the planning stages, a new dam project in Colorado may be underway by the end of the year. Designs created by Stantec for the 360-ft. tall, 3,500-ft. long dam at the 90,000-acre Chimney Hollow Reservoir in northern Colorado were finished in early June and will next be sent to the state engineer for approval.

Granite (GVA) has been awarded a $39 million contract by the U.S. Army Corps of Engineers (USACE) for modifications to the Lewisville Dam in Lewisville, Texas. Granite will book the project into its second quarter 2019 backlog. Scope of work includes the construction of upstream embankment modifications, crest road improvements, conduit filter, waterline relocations, seepage collection systems, improved roadway system and associated work.

On Feb. 7, 2017, a 200-ft. pothole opened up in the main spillway of the Oroville Dam in northern California. With snowpack at 150 percent above normal in the Sierra mountains, and Lake Oroville still rising, officials reduced the amount of flow on the main spillway.

Clement Brothers Company Inc. of Hickory, N.C., held a $15.4 million contract to construct the Corps of Engineers Carter Dam Project in Murry County, Ga. The dam is 445 ft. high, then the highest dam east of the Mississippi River, and 2,050 ft. long. The dam was built on the Coosawattee River.