Davey uses cookies to make your experience a great one by providing us analytics so we can offer you the most relevant content. By continuing to use this site, you accept our use of cookies. View our Privacy Policy for more information.

The New Ohio Stream and Wetland Valuation Metric (OH SWVM)

On February 23, 2018, U.S. Army Corps of Engineers (USACE) released a Public Notice detailing the requirement to use the Ohio Stream and Wetland Valuation Metric (SWVM). The SWVM is used to analyze a stream’s baseline condition while also tracking the progression of any projected physical, chemical and/or biological functional lift achieved through compensatory mitigation. Historically, impacts and mitigation were evaluated based on linear feet and credit ratios. A wetlands assessment tool is also under development and will be released at a later date.

Per the Public Notice, USACE will require the use of the SWVM to evaluate stream impacts and compensatory mitigation in the following scenarios:

  • For projects seeking a Section 404 Individual Permit that is public noticed by the Corps.
  • For proposed stream mitigation banks or in-lieu fee program stream mitigation sites.
  • When the Corps determines that compensatory stream mitigation is required for a project.
  • When a project exceeds the Nationwide Permit stream impact limitation thresholds.

The SWVM incorporates a variety of information and data, including: proposed stream impacts; stream habitat and biological data; and corresponding stream mitigation evaluations. This information is compiled in a spreadsheet and an Index Score is generated. The Index Score is used to calculate necessary debits/credits for stream mitigation.

The additional evaluations and studies for streams that may be impacted may include:

  • Hydrogeomorphic assessments
  • Water quality indicators
  • Macroinvertebrate community studies

Due to the requirement of these additional studies, ecological evaluation costs will increase and mitigation fees will likely be higher for a development project involving stream impacts.

If you would like more information on the Ohio SWVM or have a specific project you would like to discuss, please contact Greg Snowden or Judith Mitchell.

Request a consultation

  • How would you like to be contacted?
*Please fill out all required fields.