Synthesis of Hydrologic and Hydraulic Impacts : Technical Report

Details

• Creators:
  Joseph, John F. ; Sharif, Hatim O.
• Corporate Creators:
  University of Texas at San Antonio. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Hydrologic phenomena
  • Drainage
  • Hydraulic properties
  • Hazard mitigation
  • Impact studies
  • Highway drainage
  • Hydrologic impact
  • Hydraulic impact
  • Mitigation
  • No adverse impact
• Publication/ Report Number:
  FHWA/TX-12/0-6671-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Nov. 2010-Aug. 2011.
• Corporate Publisher:
  University of Texas at San Antonio. Dept. of Civil and Environmental Engineering
• Abstract:
  A substantial portion of the cost of highway projects (approximately 40%, according to one in-house TxDOT ; estimate) is for drainage infrastructure, which is intended to minimize any adverse hydrologic and hydraulic ; (H&H) impacts of the project. Yet, adverse H&H impacts are not well-defined, despite the cost invested in ; drainage structures for mitigation of such impacts. This report provides guidance towards defining adverse ; H&H impacts and recommendations for their mitigation. A minimalistic approach towards defining and ; mitigating adverse H&H impacts would fulfill minimal legal requirements while taking into account the ; sovereign immunity enjoyed by state agencies such as TxDOT. A literature review and surveys of state ; Departments of Transportation as well as TxDOT districts suggest that this minimalistic approach be ; discouraged in favor of an emerging “No Adverse Impact” approach. For better defining and mitigating ; adverse impacts TxDOT is to refine coordination with local floodplain administrators, optimize site visits by ; District Hydraulic Engineers and other designers because of centralization, continue to improve H&H ; modeling and documentation, disseminate best practices regarding drainage system design, and have ongoing ; training relating to particular H&H issues. Implementation of the recommendations may require a change in ; the status of the District Hydraulic Engineers.
  More +
• Format:
  PDF
• Funding:
  Project 0-6671
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24973/dot_24973_DS1.pdf
• File Type:
  [PDF - 3.50 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:f6807c0f872b5b36d8daff33a7556bb6c75e8dd04e75b87f04d73249f3d48a77