Dam Safety

The Associated Press has published an article about its “more than two-year investigation” into the condition of dams across the U.S. AP says it obtained federal data and reports under state open records laws, and its review “identified 1,688 high-hazard dams rated in poor or unsatisfactory condition as of last year in 44 states and...
Dam Safety

As part of a statewide effort in California to reduce seismic and hydrologic risk to State Water Project facilities, the California Department of Water Resources’ Castaic Dam Modernization Program begins this week with an assessment of a stream release structure. DWR will assess the integrity of a 60-foot-wide rectangular concrete chute used to pass natural...
Dam Safety

A dam in Argentine Township in Michigan, called Lobdell Lake Dam, is releasing excess water downstream due to a gate being stuck open. The Tri-County Times reported on Facebook that the dam is broken and “Lobdell Lake is losing approximately 4 ½ inches of water a day.” In a Nov. 3 Facebook post, Argentine Township...
Dam Safety

The U.S. Army Corps of Engineers has changed Mojave River Dam’s risk characterization from low to high urgency of action, as a result of recent risk assessment findings that during an extreme flood event, water could exceed the dam’s design capacity and overtop it. This could potentially result in dam failure, flooding the communities of...
Dam Safety

Nicholson Construction says it was recently named general contractor by Grant County Public Utility District for remedial foundation drain work on its Priest Rapids and Wanapum dams. Nicholson will focus on reconditioning foundation drains by core drilling 3.375-inch-diameter holes on both dams, which may be experiencing reduced flows or blocking by unknown materials or foreign...
Dam Safety

The U.S. Department of Interior’s Bureau of Reclamation reports that dam safety modifications at Steinaker Dam are substantially complete and the reservoir is back to full normal operations. Reclamation began modification work in July 2018 to repair a slope failure on the upstream face of the right abutment by flattening the abutment slope. Other modifications...
Business

The Zambezi River Authority (ZRA) has awarded the tender for the rehabilitation of the Kariba Dam spillway to a consortium comprising GE Hydro France and Freyssinet International. Kariba Dam is located on the Zambezi River and is 128 meters tall and 579 meters long. The dam impounds water for the 1,830-MW Kariba hydroelectric plant. The...
Dam Safety

The Tennessee Valley Authority’s Boone Dam Internal Erosion Remediation Project has been named the 2019 Outstanding Environmental and Engineering Geologic Project by the Association of Environmental and Engineering Geologists. AEG is a professional association for scientists practicing in the fields of environmental and engineering geology. This award is the highest honor presented by AEG, TVA...
Job Transitions

Kim de Rubertis passed away Sept. 7. He was 81. De Rubertis had a degree in geological engineering from the Colorado School of Mines and was licensed to practice civil and geological engineering, as well as engineering geology and hydrogeology. He worked in engineering for 59 years, 44 of those years in private practice as...