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Wetland Identification and Education

Are There Wetlands On My Property? 

Department staff conduct wetland determinations for the public (e.g. property owners, real estate agents, appraisers). This free service is usually conducted offsite (i.e., at their desk using GIS and other available information). Occasionally staff will visit the site as part of the wetland determination process.

Wetland Determination Request Form​

If the determination reveals that wetlands are likely, and there are development plans for the site, you may need to hire a consultant to do a wetland delineation, which is a detailed mapping of the wetland boundaries. Consultants also usually handle the removal-fill permit process for landowners.

As part of the permit application process, wetland delineations must be submitted to the Department of State Lands for review and concurrence. Delineations show which areas on a property are subject to regulation - i.e., a removal-fill permit - and which areas might be avoided in developing the project plans.

Additional Information

Wetland Fact Sheet

Statewide Wetland Inventory Maps

Public Information and Education
The Department provides information on wetland identification, functions,  regulations and wetland planning through publications, workshops and presentations to various groups.
Most materials and presentations focus on our core responsibilities, such as permit requirements, how to identify wetlands and how to use wetland maps.

Special Publications

Wetland and Land Use Change in the Willamette Valley: 1994-2005  

Wetland Fact Sheets 

Wetland Regulatory Compliance in Willamette Valley Study: 1982-1994