US Principal Meridians
The US PLSS uses 37 principal meridians as north-south reference lines. Each meridian serves as the origin for townships and ranges in its coverage area.
US Principal Meridians
The US PLSS uses 37 principal meridians as north-south reference lines. Each meridian serves as the origin for townships and ranges in its coverage area.
Read guideIndian Meridian
The Indian Meridian is the principal meridian used for all PLSS surveys in Oklahoma, established in 1870 after the federal survey of Indian Territory.
Read guideIndian Principal Meridian: Oklahoma Township-Range-Section Lookup
The Indian Principal Meridian governs PLSS surveys across Oklahoma. Convert any Indian Meridian township, range, and section description to coordinates.
Read guideNew Mexico Principal Meridian
The New Mexico Principal Meridian anchors PLSS surveys across New Mexico and southern Colorado, covering the Permian Basin, San Juan Basin, and San Luis Valley.
Read guideSixth Principal Meridian
The Sixth Principal Meridian anchors PLSS surveys across Colorado, Kansas, Nebraska, Wyoming, and South Dakota. Convert 6th PM legal descriptions to GPS coordinates.
Read guideSixth Principal Meridian — PLSS Legal Land Descriptions
The Sixth Principal Meridian governs PLSS legal land descriptions across Colorado, Kansas, Nebraska, Wyoming, and South Dakota. Learn format, history, and how to convert descriptions to coordinates.
Read guideWillamette Meridian
The Willamette Meridian is the principal meridian for PLSS surveys in Oregon and Washington, established in 1851 from the Willamette Stone near Portland.
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