Damage to Lower Van Norman Dam from 1971 San Fernando Earthquake
Geologic Hazards

50th Anniversary of San Fernando Earthquake

I posted about the 10th anniversary of the Christchurch Earthquake, but there was another notable earthquake anniversary recently…the 50th anniversary of the 1971 San Fernando earthquake. Khaled Chowdhury from the US Army Corps of Engineers […]

One of six areas proposed for sea walls is a stretch of Ocean Boulevard in Shell Beach, where erosion is eating away at the bluffs and beach, exposing a storm drain pipe.
Project Related

USACE wants 6 sea walls at Pismo Beach

Coastal erosion is threatening existing structures at Shell Beach and northern Pismo Beach near San Luis Obispo, California. The Army Corps of Engineers suggests 6 sea walls to protect infrastructure such as two sewage treatment […]

Water infrastructure tunnel - Copyright Black and Veatch
Press Releases

Black & Veatch to design Chicago’s McCook Reservoir tunnel connection for USACE

Water infrastructure tunnel - Copyright Black and Veatch

Kansas City, Mo. (Aug. 5, 2009) – The U.S. Army Corps of Engineers (USACE) has selected Black & Veatch as the design engineer for the McCook Reservoir Main Tunnel. The new tunnel will connect the future McCook Reservoir to Chicago’s Deep Tunnel system, which is aimed at improving water quality in area rivers and Lake Michigan and reducing flood risk for the city of Chicago and suburban communities. [Editor] Read on for the rest of the press release. Photo copyright Black and Veatch[/Editor] […]

Geotubes to protect Grand Isle Louisiana
Project Related

Video: Sand Filled Geotextile Tubes To Protect Grand Isle Louisiana

Geotubes to protect Grand Isle Louisiana In this ENR.com video, a US Army Corps of Engineers (USACE) project to protect Grand Isle Louisiana from the erosional effects of a large storm surge is described. 5.7 miles of sand filled geotextile tubes or geotubes 30-ft in diameter are used to form the core of a dune along with a geotextile erosion apron held in place by anchor tubes. The design is aimed to prevent devastating erosion in the event that a large storm surge overtops the protective dunes. The sand is screened on site and mixed with water to form a slurry that is pumped into the tube. Once the tubes are in place, additional sand will be placed over the top and the dune revegetated. If the topping sand is eroded away, the Corps hopes the fix will be easier to perform with the tubes. Click through for the video.