{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "This dataset contains the boundaries of the Public Land Survey System (PLSS) \u2013 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.\n\nNote \u2013 some boundaries may not match parcel boundaries where that is logical \u2013 we haven\u2019t had the time to complete that movement.\n\nThese are historic boundaries that still have impacts upon the names and geography of Los Angeles county today. For example, where does the name \u201cVerdugo Mountains\u201d come from \u2013 it comes from the Rancho established there.", "description": "

Background<\/SPAN><\/P>

PLSS (from wikipedia)<\/SPAN><\/P>

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).<\/SPAN><\/P>

Ranchos<\/SPAN><\/P>

The 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.<\/SPAN><\/P>

Why this dataset?<\/SPAN><\/P>

This dataset was created in order to integrate the boundaries from two different datasets \u2013 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.<\/SPAN><\/P>

Method of conflation<\/SPAN><\/P>

These 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. <\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "summary": "This dataset contains the boundaries of the Public Land Survey System (PLSS) \u2013 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.\n\nNote \u2013 some boundaries may not match parcel boundaries where that is logical \u2013 we haven\u2019t had the time to complete that movement.\n\nThese are historic boundaries that still have impacts upon the names and geography of Los Angeles county today. For example, where does the name \u201cVerdugo Mountains\u201d come from \u2013 it comes from the Rancho established there.", "title": "TOWNSHIP RANGE SECTION RANCHO", "tags": [ "grid", "township", "range", "section", "rancho", "PLSS", "USGS" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "Los Angeles County Public Works, Mapping & GIS Services (mapping@dpw.lacounty.gov)", "licenseInfo": "

This is public data.<\/SPAN><\/P><\/DIV>" }