Abstract

Sediment Budget Analysis for Town Creek Watershed, MS

Author(s): Ramirez-Avila, J. ;  Sharp, J.;  McAnally, W.;  Ortega-Achury, S.

The Town Creek watershed is located in the Northeast area of Mississippi. It covers 1,769 km2 and represents approximately 50% of the upper Tombigbee River basin area contributing to the Aberdeen Pool on the Tennessee-Tombigbee Waterway. The sediment yield from the watershed attributes to the estimated 320,000 ton/yr of deposition in Aberdeen pool, where annual dredging averages 310,000 ton/yr. To produce remedial measures for reducing water quality impairment, and dredging costs (expressed in terms of a percent reduction of sediment loads), and future BMP’s in Town Creek watershed, it is necessary to know the sediment sources and loads currently transported within the watershed. A sediment budget for a partial sub-basin within Town Creek watershed is investigated by means of experimental and modeling methods, including HEC-RAS and the Sediment Impact Analysis Method (SIAM). SIAM is a rapid assessment screening tool used to evaluate the impacts of sediment management activities and determine trends in sedimentation. The tool is incorporated in the latest version of the U.S. Army Corps of Engineers HEC-RAS model as a design module. Local sediment sources/sinks (e.g. tributary inputs, landuse practices) as well as the upstream and downstream boundary conditions are defined by using computational tools, field surveys, and sediment sampling. The analysis performed is expected to provide a general assessment of the sediment budget components within a representative watershed within the Tombigbee River Basin.







 

Technical Presentations

  • Delta Water Quality
  • Delta Water and Agriculture
  • Wetlands
  • Water Quality
  • Sediments
  • Non-Point
  • Management and Sustainability
  • Wood Treatment
  • Modeling
  • Soil and Water Treatment

Workshops

Responsible Site Design: Implementing Innovative Stormwater Management Strategies

The primary goal of the workshop is to create a dynamic learning experience that examines the role of stormwater management in the built environment. The workshop will focus on integrating ecologically sound water management approaches into site design. After the workshop, attendees will be familiar with the following concepts and technical issues:

  • Knowledge of the stormwater treatment chain
  • Knowledge of the impact of land use codes on stormwater management
  • Application of a design process that mitigates the effects of stormwater on-site
  • Knowledge of the relationship between land use codes and design for innovative stormwater management

Information

For information contact:
Jessie Schmidt
MWRRI
Box 9680
Mississippi State, MS 39762
662-325-3295
jschmidt@cfr.msstate.edu