![]() Removal of these barges was dependent on the emergency dredging action, specifically the portion within the Robert S. The two sunken barges impeded the operation of the gates and those gates could not be closed, resulting in the drawdown of the pools and subsequent negative impacts to mussel populations. The barges were forced against three of the structure's open gates. On two fully-loaded barges moored in the Muskogee area tore loose and were carried downstream, where they collided with the dam at Webbers Falls and sunk. There was another complicating factor other than three miles of river channel being clogged with sedimentation. Therefore, the Tulsa District made the decision to commence dredging and dredge spoil operations prior to NEPA review so economic impacts to the region would be reduced. This material had to be removed before the Navigation System could be reopened for navigable traffic and interstate commerce. Result of this increased sedimentation was 3 miles of river channel was clogged with an estimated 1,000,000 cubic yards of sediment. This increased river flow was carrying an enormous volume of sediment which was transported from the three upstream feeder river basins and was passed through upstream dams and into the Navigation System, where much of it was subsequently deposited. The McLellan-Kerr Arkansas River Navigation System (MKARNS) just downstream from the Arkansas River confluence with the Verdigris River and the Grand (Neosho) River had a sustained volume of well over 600,000 CFS over a duration of more than a week. Below Keystone Dam just west of Tulsa, the rate of river flow approached 300,000 CFS at its maximum volume and was flowing at 600,000 CFS at W.D. River flows, measured in cubic feet per second (CFS), were overwhelming within large portions of the river system. Unfortunately, significant and in some cases, catastrophic flooding was unavoidable due to the received rainfall. With so many reservoirs at the top of their flood pool capacity, the Tulsa District managed reservoir releases so there was a balanced approach to evacuating flood waters from all pools. Approximately 15 Corps of Engineers reservoirs in the Upper Arkansas River Basin, Verdigris River Basin, and Grand (Neosho) River Basin, all within Tulsa District, flood pools were flooded to the top of their capacity. In May and June 2019 record rainfall fell in Southeastern Kansas and Northeastern Oklahoma which caused widespread flooding in the region. Your comments will help the Corps in development of this EA. The EA will assess how the action affected the human environment and to make the determination if the action was compliant with the National Environmental Policy Act (NEPA). The EA for this after action is authorized in Section 216 of the River and Harbor Flood Control Act of 1970 and Section 1202 of the Water Infrastructure Improvements for the Nation Act of 2016. The Corps has initiated an after action Environmental Assessment (EA) for this activity that occurred in the Webbers Pool and Robert S. Army Corps of Engineers, is soliciting comments from the public and agencies on the potential effects of the emergency dredging and placement of dredged spoils activity that occurred during the spring and summer of 2019, as well as, the effects of the water drawdown, impact to the mussel population that was affected as a result of the drawdown, and mitigation efforts, on the Arkansas River, southeast of Tulsa, Oklahoma. The video of the presentation was updated and provides corrected information. The information is in the summary of the article. Information included in the below public notice, which was published Aug 28, included a presentation with incorrect information. Kerr pool emergency dredging and placement Public Notice RepCorrection: After action environmental assessment for the Webbers pool and Robert S. She spent two years working in the private sector supporting local, state and federal projects. In 2015, Kalli left Tulsa to return to Texas. She started as a student intern at the Tulsa District and by 2015 had become the Deputy Chief of the Engineering and Construction Division at the Tulsa District. Kalli’s career with the USACE began in 2001. She grew up in Amarillo, Texas but spent a lot of time in Oklahoma and attended Oklahoma State University from which she holds a Bachelor of Science in Civil Engineering, and a Master of Science in Engineering Technology. Kalli is a true success story and model USACE leader. She works with districts to improve engineering and construction activities. Kalli Egan, the regional acquisition program manager at Southwestern Division, focuses on strategies and technical integration. Army Corps of Engineers has already invested thousands of hours into studying, planning, designing and contracting the project. By the time the first shovels break ground on a new civil works or military construction venture, the U.S.
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