Wetland Delineation
Before any ground is broken near a potential wetland, an owner needs to know exactly where the boundaries fall. Our scientists identify and map wetland limits using federal methods, giving developers and landowners a clear picture of where work can and cannot occur.
Branch Locations:
Raleigh-Durham, Charlotte, Winston-Salem / Greensboro, Wilmington, Myrtle Beach, Charleston, Greenville-Spartanburg, Atlanta, Savannah, Orlando, Tampa, Virginia Beach, Fairfax, Montgomery County, Lewes, Chicago, Houston, Dallas-Fort Worth, San Marcos Corridor, Nashville
Have a multi-site footprint? Learn how we can work with you
Service DescriptioN
About Our Wetland Delineation Service
Wetland delineation is the process of identifying and mapping the boundaries of wetlands on a property using the methods set by the U.S. Army Corps of Engineers.
Federal and state regulations protect wetlands, and any project that may disturb them requires an accurate boundary determination first. The delineation establishes where regulated wetlands begin and end so the property owner knows what can and cannot be developed.
Dragonfly Pond Works provides wetland delineation services that follow the Corps of Engineers Wetland Delineation Manual and the applicable regional supplements.
Key Benefits of Wetland Delineation
Clear Boundaries Before You Build
A completed delineation shows exactly where wetland boundaries fall so you can plan development, grading, or infrastructure around them.
Regulatory Risk Reduced
Disturbing a wetland without a delineation can result in enforcement actions, fines, and project delays. Having the boundaries mapped early prevents those outcomes.
Accepted by Agencies
Our delineation reports follow the methodology the Corps of Engineers and state agencies require, which supports a smoother review process.
Data for Permit Applications
The delineation report and boundary map become part of the permit package for any project that affects or is adjacent to wetlands.
Site Planning Made Easier
Engineers, developers, and land planners can overlay the delineation map on their designs to avoid wetland impacts and reduce mitigation costs.
Confidence in Due Diligence
For property transactions, a current delineation gives buyers and lenders reliable information about the environmental constraints on the land.
From The Field
Service Photos
How It Works
Desktop Review
We review existing maps, soil surveys, aerial photographs, and National Wetland Inventory data to identify areas likely to contain wetlands.
Field Investigation
Our scientists examine vegetation, soils, and hydrology at sample points across the site using the three-parameter approach required by the Corps of Engineers.
Boundary Flagging
We flag the wetland boundaries in the field so surveyors can record their location.
Survey and Mapping
A professional survey ties the flagged boundaries to site coordinates, producing a map that can be used in design and permitting.
Report Preparation
We compile the field data, data sheets, photographs, and maps into a delineation report formatted for agency review.
Why Wetland Delineation is Important
Any project near a stream, pond, or low-lying area may encounter regulated wetlands. Without a delineation, the property owner has no reliable way to know where those boundaries fall.
An accurate delineation protects the project from permit violations and gives the design team the information it needs to work around sensitive areas.
Wetland Delineation FAQs
Answers to our most common questions about this service. If you have a different question not answered here, get in touch.
A delineation involves examining vegetation, soils, and hydrology in the field using the three-parameter method defined by the U.S. Army Corps of Engineers. The result is a map showing the boundaries of jurisdictional wetlands on the site.
A delineation is typically required before any project that may fill, grade, or otherwise disturb an area where wetlands may be present. Lenders and buyers also request delineations during property transactions.
Fieldwork for a typical site takes one to several days, depending on the size and complexity. Report preparation and agency review add additional time.
Yes. We prepare and submit the delineation report for a jurisdictional determination and coordinate with the reviewing agency through the process.
A preliminary determination is a quick, conservative estimate that treats all potential wetlands as jurisdictional. An approved determination is a formal agency decision on which areas are regulated.
No. Jurisdictional determinations have an expiration period set by the reviewing agency, typically 5 years. After that, a new delineation may be needed.