ISO-19139 Metadata
Resource Identification Information:
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Citation:
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Title:
TOWNSHIP RANGE SECTION RANCHO
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Presentation format:
mapDigital
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Descriptive keywords:
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Keywords:
Downloadable Data
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Thesaurus name: ArcGIS Content Type
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Descriptive keywords:
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Keywords:
grid, township, range, section, rancho, PLSS, USGS
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Descriptive keywords:
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Keywords:
grid, township, range, section, rancho, PLSS, USGS
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Descriptive keywords:
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Keywords:
grid, township, range, section, rancho, PLSS, USGS
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Descriptive keywords:
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Keywords:
grid, township, range, section, rancho, PLSS, USGS
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Descriptive keywords:
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Keywords:
grid, township, range, section, rancho, PLSS, USGS
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Descriptive keywords:
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Keywords:
grid, township, range, section, rancho, PLSS, USGS
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Descriptive keywords:
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Keywords:
grid, township, range, section, rancho, PLSS, USGS
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Abstract:
BackgroundPLSS (from wikipedia)The Public Land Survey System (PLSS) is the surveying method used historically over the largest fraction of the United States to survey and spatially identify land parcels before designation of eventual ownership, particularly for rural, wild or undeveloped land. It is sometimes referred to as the rectangular survey system (although non rectangular methods such as meandering can also be used).RanchosThe Spanish and, later, Mexican governments encouraged settlement of territory now known as California by the establishment of large land grants called ranchos, from which the English word ranch is derived. Land-grant titles (concessions) were government-issued, permanent, unencumbered property-ownership rights to land called ranchos.Why this dataset?This dataset was created in order to integrate the boundaries from two different datasets – a Rancho Boundary file from the Bureau of Land Management (BLM), and a parcel-accurate Township Range Section file created by the LA County Department of Public Works. There are many sources of this data out there, but the rancho are holes in the PLSS datasets and the TRS is a hole in the rancho files. This combines both of those.Method of conflationThese two datasets were combined, and any holes and overlaps were conflated to match the Rancho boundaries that were created by BLM. When there were questions I used the USGS topographic quad sheets to verify numbering and naming.
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Purpose: This dataset contains the boundaries of the Public Land Survey System (PLSS) – Township Range Section boundaries, as well as the boundaries of the Ranchos and Land-grants that pre-dated the PLSS. In general these match the USGS topographic Quad Sheets from the US Geological Survey.
Note – some boundaries may not match parcel boundaries where that is logical – we haven’t had the time to complete that movement.
These are historic boundaries that still have impacts upon the names and geography of Los Angeles county today. For example, where does the name “Verdugo Mountains” come from – it comes from the Rancho established there.
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Dataset language:
eng
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Dataset character set:
utf8
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Resource constraints:
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Constraints:
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Limitations of use: This is public data.
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Spatial representation type:
vector
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Processing environment: Esri ArcGIS 13.1.0.41833
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Extent:
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Geographic element - Bounding rectangle:
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Extent contains the resource: true
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West longitude: -118.953442
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East longitude: -117.644097
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North latitude: 34.823527
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South latitude: 33.701345
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Credits: Los Angeles County Public Works, Mapping & GIS Services (mapping@dpw.lacounty.gov)
Spatial Representation - Vector:
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Level of topology for this dataset:
geometryOnly
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Geometric objects:
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Object type:
composite
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Object count: 3065
Reference System Information:
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Reference system identifier:
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Value: 2229
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Code space: EPSG
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Version: 5.3(9.0.0)
Distribution Information:
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Format:
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Format name: Enterprise Geodatabase Feature Class
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Transfer options:
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Metadata Information:
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Metadata language:
eng
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Metadata character set:
utf8
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Last update:
2024-01-19
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Scope of the data described by the metadata:
dataset
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Scope name: dataset
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Name of the metadata standard used: ISO 19139 Geographic Information - Metadata - Implementation Specification
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Version of the metadata standard: 2007