Evaluation of the Iowa Department of Transportation’s Compensatory Wetland Mitigation Program

Details

• Creators:
  VanDeWalle, Terry J.
• Corporate Creators:
  Iowa. Dept. of Transportation
• Subject/TRT Terms:
  • Compliance
  • Countermeasures
  • Wetland conservation
  • Wetlands
  • Environment
  • Highways
  • Safety and Human Factors
• Publication/ Report Number:
  TR-500
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa ; United States
• TRIS Online Accession Number:
  01001189
• Edition:
  Final Report
• Corporate Publisher:
  Iowa. Dept. of Transportation
• Abstract:
  The purpose of this investigation was to evaluate the Compensatory Wetland Mitigation Program at the Iowa Department of Transportation (Iowa DOT) in terms of regulatory compliance. Specific objectives included: (1) Determining if study sites meet the definition of a jurisdictional wetland; (2) Determining the degree of compliance with requirements specified in Clean Water Act Section 404 permits. A total of 24 sites, in four age classes were randomly selected from over 80 sites currently managed by the Iowa DOT. Of the 24 sites evaluated, 58% meet or exceed Section 404 permit requirements. Using section 404 permit acreage requirements as he criteria for measuring success, 58% of the wetland mitigation sites investigate as part of this study are successful. Using net gain/loss as the measure of success, the Compensatory Wetland mitigation Program has been successful in creating/restoring nearly 44 acres of wetland over what was required by permits.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/37781/dot_37781_DS1.pdf
• File Type:
  [PDF - 215.96 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:0aa445296a540c1a1b3a5b8883a48609f4785523a31deafdb4619b2e1e9d8cfa