Results:
Tag: 2020
Clear
  • Pittsburgh District joins Duquesne University to form a stunning partnership

    Every organization says they are a learning organization, but the U.S. Army Corps of Engineers has taken its quest for innovation to a stunning level. During the 2021 recreation season, experts from the Pittsburgh District began a partnership with Duquesne University’s biology department. The goal was to test water quality within Crooked Creek Lake’s watershed called an “electrofishing survey,” which the corps had not used before.
  • Wiles named Nashville District Employee of the Month for December 2020

    NASHVILLE, Tenn. (Feb. 12, 2021) – Sarah Wiles, senior geologist in the Civil Design Branch’s Geology Section, is the U.S. Army Corps of Engineers Nashville District Employee of the Month for December 2020.
  • Hydrologic Impacts on Human Health: El Niño Southern Oscillation and Cholera

    Abstract: A non-stationary climate imposes considerable challenges regarding potential public health concerns. The El Niño Southern Oscillation (ENSO) cycle, which occurs every 2 to 7 years, correlates positively with occurrences of the waterborne disease cholera. The warm sea surface temperatures and extreme weather associated with ENSO create optimal conditions for breeding the Vibrio cholerae pathogen and for human exposure to the pathogenic waters. This work explored the impacts of ENSO on cholera occurrence rates over the past 50 years by examining annual rates of suspected cholera cases per country in relation to ENSO Index values. This study provides a relationship indicating when hydrologic conditions are optimal for cholera growth, and presents a statistical approach to answer three questions: Are cholera outbreaks more likely to occur in an El Niño year? What other factors impact cholera outbreaks? How will the future climate impact cholera incidence rates as it relates to conditions found in ENSO? Cholera outbreaks from the 1960s to the present are examined focusing on regions of Central and South America, and southern Asia. By examining the predictive relationship between climate variability and cholera, we can draw conclusions about future vulnerability to cholera and other waterborne pathogenic diseases.
  • Incorporating Color Change Propensity into Dredged Material Management to Increase Beneficial Use Opportunities

    Dredged materials provide a number of beneficial use opportunities, including beach nourishment, habitat creation and restoration, and other activities. In situ sediment color is important for determining aesthetic and habitat suitability, for beach nourishment, and for other projects. However, dredged materials must meet locally established color compatibility requirements (for example, material cannot be too dark). Often, potential sediment sources are close to meeting specified color thresholds, and previous observations suggest that sediments lighten over time. In response to these observations, this study quantified sediment color change potential in a dredged m material management context. Results indicate that dredged material sediment color responded to changes in secondary color components, sediment mixing, and photolytic bleaching improving the sediment color for beneficial use application. Findings allowed for development of a conceptual color change capacity framework and supported development of tools for resource managers to incorporate color change dynamic into planning and operations activities. The following report provides a framework for determining the color change capacity of dredged materials using (1) a comprehensive laboratory approach and (2) a semiquantitative index based on source material and placement location conditions. These tools allow practitioners to incorporate dredged-material color change into resource management decisions, thus increasing beneficial use opportunities.
  • Data Enrichment and Enhanced Accessibility of Waterborne Commerce Numerical Data: Spatially Depicting the National Waterway Network

    This report provides methodologies and processes of data enrichment and enhanced accessibility of Waterborne Commerce and Statistics Center (WCSC) maintained databases. These databases house tabular and statistical data that reports on The U.S. Army Corps of Engineers (USACE) Civil Works Division National Waterway Network (NWN), which geospatially represents approximately 1,000 harbors and 25,000 miles of channels and waterways. WCSC is a division of The Institute for Water Resources (IWR). They have been tasked with the international collection, maintenance, and archival of all records involving commercial movements and commerce that occur on federal waterways. The current records structure is a large, tabular dataset and limited to the systems and processes put in place prior to the computing standards and capabilities available today. Methods have been tested and utilized to bring the tabular datasets into an optimized, modern geospatial network and expanded upon to create a higher resolution than previously maintained by the WCSC. This report will expand upon the applied methodologies to optimize data queries and the overall enhancement of the data system to allow for linkages to various other sources of information for commerce data enhancement for decision support assistance.
  • Publications of the U.S. Army Engineer Research and Development Center; Appendix E: FY20 (October 2019-September 2020)

    Publications issued October 2019 through September 2020 by the U.S. Army Engineer Research and Development Center (ERDC) are listed. The publications are grouped according to the technical laboratories or technical program for which they were prepared. Procedures for obtaining ERDC reports are included in the Preface.
  • Cleary named Nashville District Employee of the Month for November 2020

    NASHVILLE, Tenn. (Jan. 8, 2021) – Ryan Cleary, project engineer at the Chickamauga Lock Replacement Project Resident Engineer Office, is the U.S. Army Corps of Engineers Nashville District Employee of the Month for November 2020.
  • Tuttle Creek Lake prepares for winter: Outflow increases, lake drops

    MANHATTAN, Kan. – Beginning Dec. 23, 2020 the U.S. Army Corps of Engineers at Tuttle Creek Lake will increase outflows to drop lake levels in order to facilitate ongoing construction projects. This seasonal adjustment minimizes ice damage, provides additional storage capacity for spring rains and favorable habitat for fish spawning in the spring. Operations to lower the lake water level will not delay ongoing construction activities at the stilling basin (locally known as the “tubes”) nor cause excessive flow for ongoing construction downstream in the Kansas River.
  • Nashville District deputy district engineer culminates impactful career

    NASHVILLE, Tenn. (Dec. 11, 2020) – The U.S. Army Corps of Engineers Nashville District honored its retiring deputy district engineer yesterday. Few people were physically present due to COVID-19 social distancing requirements, but more than 120 employees, leaders, and friends joined the ceremony virtually to make sure they recognized Patty Coffey’s impactful career and unique blend of strong and caring leadership.
  • Holiday safety tips for outdoor enthusiasts

    The Kansas City District, U.S. Army Corps of Engineers wants to wish everyone a safe and happy holiday season. Please remember to practice water safety and always wear a life jacket in, on, or around the water. For more water safety information visit or follow pleasewearit.com.