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...
New Development

Entidad Binacional Yacyreta (EBY) announces it has signed two contracts related to work on the 3.2-GW Yacyreta hydro project on the Parana River between Argentina and Paraguay. One is the electromechanical equipment supply contract for the 270-MW Aña Cua powerhouse with Voith Hydro Ltda. The total amount of the contract is US$99,689,577.84. The work includes...
Rehabilitation and Repair

Peru’s energy and mines ministry has granted Nueva Esperanza Hydro the definitive concession for increasing capacity at a hydroelectric complex in Peru’s southeast Puno region. According to BNamericas, the company submitted the concession request for 102.1-MW Anto Ruiz III and 103.8-MW Anto Ruiz IV in March 2018. The proposal will increase capacity of Anto Ruiz...
Rehabilitation and Repair

A planned trip to Montreal, Quebec, Canada, to attend the WaterPower Canada conference became much more, thanks to an invitation from David Murray, chief operating officer of Hydro-Quebec and president of Hydro-Quebec Production. Murray was a keynote speaker at HydroVision International 2019. While he was in Portland, Ore., last July, he extended to me 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...
Dam Safety

The navigation lock at Bonneville Dam was closed on Thursday, Sept. 5, after lock operators detected problems with the lock during operation. Engineers dewatered the lock Sept. 6, performed an inspection and discovered that the downstream concrete sill, against which lock gates create a water-tight seal, had cracks. The U.S. Army Corps of Engineers —...
Rehabilitation and Repair

NorthWestern Energy has announced plans to upgrade its 8-MW Madison Powerhouse with the installation of four new turbine-generator units. The turbines and generators in the Madison Powerhouse, on the Madison River about 10 miles north of Ennis, Mt., are 109 years old. The original powerhouse building will remain in place, largely unaltered, while four new...