Developer Resources

Developers are often faced with many questions regarding how their projects will impact wetlands, and what actions are necessary to comply with wetland regulations. The OCC is a non-regulatory agency, but the following information is provided to aid in the navigation of some of the issues developers may deal with, including permitting and restoration.
A water lily on the surface of an Oklahoma wetland.

Wetland Regulations

Under Section 404 of the Clean Water Act, consideration must be given to the impact of a construction project on wetlands. Impacts should be avoided or minimized where practicable. Where impacts cannot be avoided, permitting and compensatory wetland mitigation may be necessary. The United States Army Corps of Engineers (USACE) manages Section 404 oversight in Oklahoma. In order to ensure compliance with regulations, developers should consult relevant guidelines and coordinate with the Tulsa District of the USACE regarding the following:

  1.  Identifying any wetlands present at the project site
  2. Determining if wetlands are jurisdictional and protected by Section 404,
  3. Developing plans that will either avoid or minimize impacts to wetlands,
  4. Acquiring the necessary permits if jurisdictional wetlands will be impacted, and
  5. Designing, executing and monitoring wetland mitigation if necessary.
  6. Additionally, activities where a 404 Permit is required, are potentially subject to a Section 401 Certification completed by the Oklahoma Department of Environmental Quality (ODEQ).

For more information developers should coordinate with the USACE directly:

  • ceswt-ro@usace.army.mil
  • (918) 669-7401
  • U.S. Army Corps of Engineers
    • CESWT-RO
    • 2488 E 81st St, Tulsa, OK 74137
A widow skimmer at the site of an Oklahoma wetland.

Locating Mitigation Opportunities

If jurisdictional wetlands are impacted by development, wetland mitigation (wetland restoration, creation or enhancement) may be required to offset wetlands lost. Locating suitable locations to complete wetland restoration where there is sufficient hydrology and soils capable of ponding water can be challenging.
To facilitate the identification of potential restoration opportunities, OCC developed a screening tool called the Restorable Wetlands Identification Protocol (RWIP). RWIP identifies potential candidate restoration sites based on topography, soils, hydrology and land-use. RWIP is a landscape assessment tool but does not provide any information about landowner willingness to participate. Watershed scale maps are currently available upon request for the entire state. An updated version of RWIP is underway that provides more detailed information regarding hydromodification from ditches and impoundments, which can help conceptualize the feasibility of restoration. Updated RWIP maps are also available for about 1/3 of the state.
If a project requires compensatory mitigation, there are additional options to fulfill permitting obligations including purchasing wetland credits through In-Lieu-Fee programs or Mitigation Banks. OCC can help identify mitigation opportunities that are relevant to the location of your property.

For access to RWIP maps and information regarding other available mitigation please contact us.

Frequently Asked Questions

While an on-site visit is often necessary to determine with certainty if a wetland is present or not present, The National Wetlands Inventory (NWI) mapper is an excellent tool that can provide preliminary information on the location of wetlands.

The OCC has no regulatory authority but can help Oklahomans navigate regulatory requirements. A formal delineation and jurisdictional determination are needed to establish if a wetland is protected by the Clean Water Act. The United States Army Corps of Engineers, Tulsa District, Regulatory Program can provide further information about federal regulations.

OCC can help connect you to resources that may assist with locating available mitigation credits or identify suitable locations for restoration. Please contact us.

Bird tracks on the bank of an Oklahoma wetland.