Montana Wetland Boundary Verification Checklist

Montana Regulatory Program - Updated November 2013

Published Dec. 2, 2013
Montana Regulatory Program

All applications for Permits from the U.S. Army Corps of Engineers must include a delineation of special aquatic sites, including delineations of wetland boundaries. The content of acceptable wetland delineations is listed below.  The same information is required if you are requesting verification of a wetland boundary in conjunction with pre-application reviews.
  1. Contact information for the property owner and written permission from the property owner for the Corps to enter the property.
  2. Contact information for the individual(s) performing the wetland delineation.
  3. Location of the site:
    1. Latitude/Longitude
    2. Written directions
    3. Location map showing the limits of the study area
  4. Reference Information
    1. Color photographs with labels
    2. Aerial photograph with study area shown
    3. National Wetland Inventory (NWI) maps (where available) with study area shown
    4. Soil Surveys with study area shown
    5. Topographic maps/USGS Quadrangle maps
    6. Floodplain/FEMA Flood Insurance Rate Maps maps if applicable
  5. Describe methodologies used, including Regional Delineation Supplements, and the rationale for the choice of methodology (routine, comprehensive, difficult wetland situations).
  6. Completed data forms for wetland and upland sampling points
  7. Results of field investigation and summary of findings
    1. Name each aquatic resource and provide size in acres or square feet of wetlands, as well as lakes, ponds, and linear feet of stream/tributary (i.e. Wetland A, Pond B, Trib-1, Miller Creek).
  8. Site map with clearly marked wetland boundaries and all other aquatic resources (streams, ponds, lakes, ditches, etc.)
    1. Appropriate scale (1”=50’ or 1”=100’ is recommended)
    2. Wetland boundary flag numbers
    3. Title block with north arrow, date, scale, legend, drawing name, revision dates
  9. Stream drainage area at the site, stream size, qualitative environmental assessment of aquatic resources on site, Cowardin classification of wetland areas, etc.
  10. In the Field:
    1. Wetland boundaries marked with numbered flags corresponding to numbers on the map.
    2. Recommend all other aquatic resources are marked in the field with flagging.


  • Helena Field Office - 406-441-1375
  • Billings Field Office- 406-657-5910
  • Missoula Field Office - 406-541-4845