What are Oregon Donation Land Claims and how do they affect PLSS descriptions?

Donation land claims were granted to early settlers under the Donation Land Claim Act of 1850, before the formal PLSS survey was complete in Oregon. These claims were surveyed in irregular shapes and often cross standard section lines. They appear in western Oregon title records as 'DLC' descriptions with a claimant name and claim number rather than standard quarter-section descriptions.

How do Oregon township numbers work?

Oregon townships are numbered south from the Willamette Baseline, which runs east-west through the Portland area. Township 1 South (1S) begins immediately south of the baseline and numbers increase southward to 43S at the California border. Townships north of the baseline (1N and higher) apply to Washington State.

Can I convert Oregon timber sale descriptions?

Yes. Oregon timber sale units and harvest contract areas are described in PLSS terms. Enter the standard section, township, and range description and the converter returns the GPS centerpoint. For stand-boundary mapping, convert key corner points and connect them in your GIS tool.

How do I process a large number of Oregon PLSS descriptions?

Use Township America's batch conversion tool. Upload a CSV with your descriptions and download results with GPS coordinates appended to each row. This is the most efficient approach for BLM allotment inventories, timber portfolio mapping, and large-scale real estate due diligence.

Oregon PLSS Converter — Section Township Range to GPS

Convert Oregon Public Land Survey System (PLSS) land descriptions to GPS coordinates using the Willamette system.

Convert Oregon Land Descriptions

Enter a Oregon PLSS land description to get GPS coordinates instantly.

Example: NE 6 2S 1E Willamette Meridian

Open the converter

Understanding Oregon's PLSS System

Oregon uses a single principal meridian: the Willamette Meridian, established at a point south of Portland near the confluence of the Willamette and Tualatin rivers in 1851. The Willamette Meridian is shared with Washington State to the north, making it the governing survey system for the entire Pacific Northwest. From this single origin, townships extend northward into Washington and southward to the California border, with ranges running east from the Pacific coast and west from the Cascades.

Oregon's survey history is distinguished by the Donation Land Claim Act of 1850, which preceded the formal PLSS survey and granted land to early settlers in the Willamette Valley before the rectangular survey was complete. Donation land claims were surveyed in irregular shapes and sizes, often crossing section lines and creating complex boundaries that persist in Oregon title records today. When working with western Oregon descriptions — particularly in the Willamette Valley counties of Marion, Linn, Lane, and Benton — it is important to determine whether a parcel is a standard PLSS description or a donation land claim remnant.

East of the Cascades, Oregon's survey is more regular. The high desert of central and southeastern Oregon was surveyed systematically in the late 19th century, and the resulting grid covers a vast area managed primarily by BLM. Oregon has approximately 16 million acres of BLM-managed land east of the Cascades, and nearly all of it is described in section, township, and range. Timber management, grazing, mining, and renewable energy development in this region all depend on accurate PLSS navigation.

Principal Meridians

Willamette Meridian

Common Use Cases in Oregon

Who converts Oregon PLSS descriptions — and why.

Timber and Forest Land Management

Oregon is one of the leading timber-producing states in the country. Timber sale units, forest management plans, and harvest contracts reference PLSS descriptions for all stand boundaries. Converting these descriptions to GPS is standard practice for foresters, logging contractors, and state and federal agency staff.

Real Estate and Title Research

Oregon real estate transactions, particularly in rural and semi-rural areas, rely on PLSS legal descriptions. The combination of donation land claim remnants, standard PLSS parcels, and recorded subdivision plats makes western Oregon title research particularly nuanced — accurate PLSS-to-GPS conversion helps clarify boundaries before closing.

BLM and Forest Service Land Management

Oregon's approximately 16 million acres of BLM land and 16 national forests are all managed using PLSS legal descriptions. Grazing allotments, recreation special use permits, mining claims, and rights-of-way are described in section, township, and range. Field staff, planners, and permittees all rely on PLSS-to-GPS conversion for day-to-day work.

Agricultural Land and Water Rights

Oregon's Willamette Valley, Rogue Valley, and Columbia Basin agricultural areas are described in PLSS terms for farm sales, conservation easements, and irrigation district records. Oregon water rights are administered by the Water Resources Department and are tied to PLSS descriptions of points of diversion and places of use.

Industries: TimberAgricultureReal EstatePublic Land Management

How to Convert Oregon Legal Descriptions

Three steps from legal description to GPS coordinates.

Enter your legal description

Type or paste your Oregon PLSS description. The standard format is: NE 6 2S 1E Willamette Meridian. Oregon and Washington share the Willamette Meridian, so descriptions from either state use the same meridian designator. Township numbers run south (1S to 43S) and north (1N to 40N for Washington).

Review the GPS coordinates and map

The converter returns GPS coordinates and displays the parcel on an interactive map. For western Oregon, verify the result is in the correct valley or foothills location. For eastern Oregon BLM land, confirm against BLM surface management maps and county assessor data.

Export or save your results

Download coordinates as CSV, KML, or GeoJSON. Save locations to a project for organized access — ideal for timber management units, BLM allotment inventories, and multi-parcel real estate portfolios.

Oregon timber sales, BLM allotment inventories, and agricultural land portfolios often involve large numbers of PLSS descriptions. Use batch conversion to process an entire CSV at once and receive GPS coordinates for every parcel in a single output file.

Learn about batch conversion

Frequently Asked Questions

Common questions about Oregon PLSS descriptions and conversion.

Oregon uses the Willamette Meridian, established in 1851 south of Portland near the confluence of the Willamette and Tualatin rivers. The Willamette Meridian is shared with Washington State and governs all PLSS descriptions in both states.