Rural land due diligence: using soil surveys, topo maps and BLM records

An easement is a recorded or court-recognized right to use someone else's land for a limited purpose. Private easements, such as a neighbor's access road, a power company's line or a pipeline, are created by documents recorded in the county, or by use that a court later recognizes. They are not drawn on soil maps or topographic maps.

That is why this guide treats the federal tools as research aids. They answer three narrower questions. Where does this land sit in the public survey grid, so I can find the right records? What is the ground like, so I can judge whether a road, a septic system or a building site is realistic? And did the federal government keep, grant or reserve any rights in this land? Each answer sends you to a specific county or agency record afterward.

Treat everything below as a map to the paper trail, not the trail itself. The county recorder or clerk holds the documents that actually create private easements, and a licensed surveyor is the person who can place a described strip on the ground.

Web Soil Survey is operated by the NRCS and provides soil data produced by the National Cooperative Soil Survey. NRCS says it has soil maps and data online for more than 95 percent of the nation's counties. You draw an Area of Interest, view a soil map with descriptions of each map unit, and use the Soil Data Explorer to see how the soils rate for a particular use. NRCS also notes that soil surveys suit general farm, local and wider area planning, and that onsite investigation is needed in some cases.

The interpretation lists matter for easement questions. NRCS publishes ratings for uses such as septic tank absorption fields, local roads and streets, dwellings without basements and shallow excavations. If the only legal route to a parcel crosses a wet, poorly drained soil, or the only flat building site lies where a recorded pipeline strip restricts building, the ratings give you an early warning before you pay for engineering work.

Two cautions. A soil map unit is a boundary between kinds of soil, not between owners, so never read a line on a soil map as a property line. And a rating describes soil in general; a failed percolation test on a specific site still beats a favorable map. Use the soil map to decide where to dig and whom to hire, not to replace either.

USGS describes its US Topo maps as consistent coverage of the American landscape built from National Map data, and says current US Topos and historical topographic maps are available for free download. The Historical Topographic Map Collection holds maps published from 1884 to 2006. A 7.5-minute topographic map is produced at a scale of 1:24,000, and USGS's topoBuilder can generate a custom map for an area you choose.

For rural land, the contour lines and water features answer practical access questions. Does the claimed driveway cross a creek or climb a steep slope? Where does water leave the property, and which neighbor's land does it cross? Is there a gap between the paved road and the parcel that a surveyor will need to price? The National Map downloader also offers elevation data from the 3D Elevation Program, which is useful if you want a closer look at grade along a proposed route.

Old editions deserve a second look. A road, trail or building that appears on a map from decades ago shows that something physical existed then. It is a lead worth following in the county records, and sometimes in conversations with long-time neighbors. It is not proof of a legal right. USGS also cautions that not all features on historical maps appear on current US Topos, so compare editions before you conclude that a feature never existed.

In the states created from federal public land, most deeds describe land by the Public Land Survey System, or PLSS: a grid of townships, ranges and sections. BLM publishes a web service that represents that grid, with township, section and intersected layers. BLM describes it as the basis for federal land ownership, and says the data is optimized for publication and sharing rather than for the survey work that created it. Read it as a locator, not a survey.

The practical use is simple. Take the legal description from the deed or listing, find the section on the BLM grid, and note the township, range and meridian. Those four details are the key to every other federal record about that land, and county offices often index older instruments by section.

Not every state uses this grid. The National Archives lists the land entry case files it holds for thirty federal public land states and notes there are none for the thirteen original states, Vermont, Kentucky, Tennessee, Maine, West Virginia, Texas and Hawaii, which were never part of the public domain. If your parcel sits in one of those states, its deed will usually describe it by metes and bounds, and the county recorder is your starting point.

The BLM's General Land Office (GLO) Records website offers image access to more than five million federal land title records issued between 1820 and the present, plus survey plats and field notes dating back to 1810. BLM warns that, because of how the collection is organized, it does not contain every federal title record for the public land states. If you cannot find your patent, that does not mean none exists.

A land patent is the document that moved the land from the United States into private hands, and it can carry reservations. BLM's Oregon and Washington office explains that its Master Title Plats show current federal ownership, agency jurisdiction and rights reserved to the federal government on private land, and that rights granted to private parties for road rights-of-way, power lines and pipelines are symbolized on them. In that office's records, private land is marked with the original patent number. Ask the BLM state office for your state which cadastral and land status records exist and how to view them.

BLM's Mineral and Land Records System (MLRS) tracks land use authorizations such as rights-of-way on federal land, and its research map lets a logged-in user search by legal land description. That matters if your parcel adjoins or is surrounded by federal land, because a utility corridor or road across the neighboring public land can shape how you reach and use your own.

Put the tools in an order that moves from broad to specific, and stop to ask a professional when a result surprises you.

Soil, topography and the survey grid are statements about the land and the map. They are not statements about who may cross it. A private road easement, a utility strip or a pipeline right-of-way becomes visible only when you find the recorded instrument, and an unrecorded use may appear nowhere in any database. Ask the seller directly about shared roads, gates, farm leases, hunting leases and any utility or energy agreements.

For the county step, use the Easements.com address search to see whether the county publishes lot lines and recorded strips for your area, and the county office directory to find the recorder's records search. Where a county publishes nothing, the title commitment's Schedule B and a survey become your best sources. Our guide to reading Schedule B explains how to turn each listed instrument into a strip on the ground.