In surveying, a baseline is a line between two points on the earth's surface and the direction and distance between them. In a triangulation network, at least one baseline between two stations needs to be measured to calculate the size of the triangles by trigonometry.
This BLM map depicts the principal meridians and baselines used in the survey of the United States.
In the United States Public Land Survey System, a baseline is the principal east-west line (i.e., a parallel) upon which all rectangular surveys in a defined area are based. The baseline meets its corresponding principal meridian at the point of origin, or initial point, for the land survey. For example, the baseline for Nebraska and Kansas is shared as the border for both states, at the 40th parallel north.
More specifically a baseline may be the line that divides a survey township between north and south.
In Southern California, from Highland to San Dimas, the baseline is marked by Baseline Road.
In Michigan, the baseline for the Michigan Survey forms the boundary between the second and third tiers of counties and in many portions, discontinuous segments of road along the baseline are known as "Baseline Road." 8 Mile Road in the Detroit area runs along the Michigan Baseline and was formerly known as "Baseline Road."
Baseline Road in Hillsboro, Oregon, generally follows the Willamette Baseline which intersects the Willamette Meridian at the Willamette Stone State Park.
Canada
In Canadian land surveying, a base line is one of the many principal east-west lines that correspond to four tiers of townships (two tiers north and two south). The base lines are about 24 miles (39 km) apart, with the first base line at the 49th parallel, the western Canada–US border. It is, therefore equivalent to the standard parallel in the US system.
Ontario
In Ontario, a baseline forms a straight line parallel a geographical feature (mostly a lake, especially Lake Ontario or Lake Erie) that serves as a reference line for surveying a grid of property lots. The result of this surveying is the concession road and sideline system in use today.
Many prominent Ontario baselines lie on the surveyed boundaries of land treaties signed with First Nations peoples. For example, several baselines in Waterloo Region and Brant County (including Wilmot Line, Brant-Oxford Road, and Indian Line) follow the borders of the Haldimant Tract land grant to the Six Nations confederacy,[1] leading to the patchwork road and lot network, surveyed parallel to the western edge of the tract, which can seen in this area to this day. Jones Baseline which runs through Wellington County and Halton Region follows the original survey route marked by Augustus Jones after the Between the Lakes Purchase in 1792.[2]
Note: This is a large file, approximately 46MB. Searchable PDF prepared by the author, C. A. White.
References
^"Haldimand Tract". Grand River Country. Retrieved 8 July 2019.
^Stephen Thorning (1 Feb 1995). "Augustus Jones determined present-day county boundaries". Wellington Advertiser. Retrieved 8 July 2019.
February 25, 2023
baseline, surveying, this, article, about, usage, surveying, other, uses, baseline, disambiguation, standard, parallel, redirects, here, confused, with, standard, parallel, projections, this, article, includes, list, general, references, lacks, sufficient, cor. This article is about the usage in surveying For other uses see Baseline disambiguation Standard parallel redirects here Not to be confused with Standard parallel map projections This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations June 2010 Learn how and when to remove this template message In surveying a baseline is a line between two points on the earth s surface and the direction and distance between them In a triangulation network at least one baseline between two stations needs to be measured to calculate the size of the triangles by trigonometry This BLM map depicts the principal meridians and baselines used in the survey of the United States In the United States Public Land Survey System a baseline is the principal east west line i e a parallel upon which all rectangular surveys in a defined area are based The baseline meets its corresponding principal meridian at the point of origin or initial point for the land survey For example the baseline for Nebraska and Kansas is shared as the border for both states at the 40th parallel north More specifically a baseline may be the line that divides a survey township between north and south Contents 1 Baseline Road in the United States 2 Canada 2 1 Ontario 3 See also 4 External links 5 References Baseline Road in the United States EditMany communities in the United States have roads that run along survey baselines many of which are named to reflect that fact Some examples In Little Rock Arkansas Baseline Road follows the baseline used by surveyors of the Louisiana Purchase In Colorado Baseline Road in Boulder marks the 40th parallel or the western extension of the Kansas Nebraska boundary which is also the boundary between Adams and Weld counties In Arizona the baseline near the Phoenix metro area is marked by Baseline Road In Southern California from Highland to San Dimas the baseline is marked by Baseline Road In Michigan the baseline for the Michigan Survey forms the boundary between the second and third tiers of counties and in many portions discontinuous segments of road along the baseline are known as Baseline Road 8 Mile Road in the Detroit area runs along the Michigan Baseline and was formerly known as Baseline Road Baseline Road in Hillsboro Oregon generally follows the Willamette Baseline which intersects the Willamette Meridian at the Willamette Stone State Park Canada EditIn Canadian land surveying a base line is one of the many principal east west lines that correspond to four tiers of townships two tiers north and two south The base lines are about 24 miles 39 km apart with the first base line at the 49th parallel the western Canada US border It is therefore equivalent to the standard parallel in the US system Ontario Edit In Ontario a baseline forms a straight line parallel a geographical feature mostly a lake especially Lake Ontario or Lake Erie that serves as a reference line for surveying a grid of property lots The result of this surveying is the concession road and sideline system in use today Many prominent Ontario baselines lie on the surveyed boundaries of land treaties signed with First Nations peoples For example several baselines in Waterloo Region and Brant County including Wilmot Line Brant Oxford Road and Indian Line follow the borders of the Haldimant Tract land grant to the Six Nations confederacy 1 leading to the patchwork road and lot network surveyed parallel to the western edge of the tract which can seen in this area to this day Jones Baseline which runs through Wellington County and Halton Region follows the original survey route marked by Augustus Jones after the Between the Lakes Purchase in 1792 2 See also EditPublic Land Survey System United States List of principal and guide meridians and base lines of the United States Dominion Land Survey Canada Survey township Decumanus Maximus Principal meridianExternal links EditThe Principal Meridian Project US Resources page of the U S Department of the Interior Bureau of Land Management History of the Rectangular Survey System Note This is a large file approximately 46MB Searchable PDF prepared by the author C A White References Edit Haldimand Tract Grand River Country Retrieved 8 July 2019 Stephen Thorning 1 Feb 1995 Augustus Jones determined present day county boundaries Wellington Advertiser Retrieved 8 July 2019 Retrieved from https en wikipedia org w index php title Baseline surveying amp oldid 1069422983, wikipedia, wiki, book, books, library,
