Random Line

A preliminary survey line established by a land surveyor to approximate the location or direction of a property boundary before its exact position has been determined. In traditional land surveying, a random line is often run between two known or estimated points to...

Ambulatory Boundary

A property boundary that is not permanently fixed in one location but may move over time as a result of gradual changes in natural features, particularly rivers, streams, lakes, and shorelines. In real estate and boundary law, an ambulatory boundary commonly occurs...

Abuttals

A traditional real estate and surveying term referring to the descriptions of adjoining properties, roads, waterways, or other physical features that establish the boundaries of a parcel of land. Historically used in deeds, land grants, and property conveyances,...

Thalweg

A legal and surveying term referring to the line that follows the deepest part of a river or stream channel, often used to establish boundaries between adjoining properties, states, or countries separated by a navigable waterway. The term comes from the German words...

Extralateral Rights

Extralateral Rights are the rights of a lode mining claim owner to follow a mineral vein downward beyond the side boundaries of their claim, even when the vein passes underneath a neighbor’s land. The right depends on the vein’s apex, its highest point or the place...