Fifth Principal Meridian

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The Fifth Principal Meridian starts from the old mouth of the Arkansas River, and, with the base line running west from the old mouth of the St. Francis River, governs the surveys in Arkansas, Missouri, Iowa, North Dakota; those in Minnesota, west of the Mississippi River and west of the third guide meridian north of the river; and in South Dakota all east of the Missouri River, and the surveys on the west side of the river to a limiting line following the third guide meridian (of the Sixth Principal Meridian system), White River, and the west and north boundaries of the Lower Brule Indian Reservation. This meridian is nearly coincident with 91° 03' 42" longitude west from Greenwich.

[edit] Source

• Raymond, William Galt (1914). Plane Surveying for Use in the Classroom and Field (via Google Books), New York: American Book Company.