dam Tag

Dam Safety in North Carolina

[vc_row][vc_column][vc_column_text] Forecasting Individual Dam Response to Severe Storms   [/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]North Carolina is home to more than 5,700 dams, many of which are aging and unable to contain excess stormwater runoff from increased development and more frequent severe storms.   As part of North Carolina’s recovery and resiliency efforts following recent hurricanes, which includes the governor’s flood control initiative, Draper Aden Associates evaluated more than 50 high-hazard dams in the Neuse and Lumber River Basins. These evaluations will help emergency management officials prioritize responses both before and after extreme storms by providing a clearer picture of the dam’s hydraulic capacity. Specifically, we were tasked with developing hydrologic and hydraulic computer model applications for each dam.   In order to gather the necessary data to develop these models for each dam, we performed field assessments and professional surveying services. We collected spillway dimensions and elevations, dam top elevations and profiles, and information on the material and configuration of the...

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Potential Changes in Store for Dam Safety?

While the 2011 Virginia General Assembly considers numerous legislation to aid the Commonwealth moving forward, one bill introduced by Senator Ryan T. McDougle (R-Hanover) proposes a rollback of the State's current criteria for dams subject to State-regulated safety inspections. As proposed, the bill (SB 1060) would reduce the number of dams subject to regulation throughout the State by more than half. There is a cetain level of irony that while over 1500 dams in the State have been identified as subject to inspection, less than 42% of those dams have certifications. The debate around this issue is not around the vast majority of high-hazard dams, but moreso over significant-hazard and low-hazard dams which would no longer be subject to inspection. The bill is supported by certain local officials and private dam owners as they contend the cost associated with the plans are prohibitive. However, State officials as well as the American Council of Engineering Companies of Virginia  point out that the current standards...

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