The grid that shows the township, range and section information for Los Angeles County taken from the PLSS.
The Public Land Survey System (PLSS) typically divides land into 6-mile-square townships, which is the level of information included in the National Atlas. Townships are subdivided into 36 one-mile- square sections. A section is an area normally [...]
The grid that shows the zoning maps that cover the unincorporated areas of Los Angeles County. This grid follows alignment and numbering system as the Department of Public Works House Numbering Maps. This was developed as part of the Zoning Map Conversion and Integration Project (ZCIP) – 2002 to 2006.
UPDATED on [...]
The US Geological Survey has made its standard topo maps available for download through The National Map Viewer. NOTE – through research I have found that the USGS topo Store is a better place to go to download the maps. Click here to go to the store
There are now [...]
The Cal-Atlas site facilitates the coordinated and sustainable development, maintenance, licensing and sharing of geospatial data and web map services by California government agencies, partners and stakeholders. California government agencies work with the California GIS Council, regional GIS collaboratives and the broader California GIS community to define the data architecture, systems, standards, agreements and processes [...]
Abstract: This is the grid used to create the Los Angeles County cadastral database. The grids are 15,000 feet high and 20,000 wide. Purpose: Base map for the cadastral database Data can be downloaded here [...]
Abstract: Sewer Maintenance Operations Map Grid. Purpose: For showing and querying facilities that lie within different Sewer Maintenance operations maps
Data can be downloaded here [...]
Abstract: Sewer Maintenance Operations Map Sub Grid. Each Op map originally divided into 12 sub grids A1 through D3. Purpose: For showing and querying facilities that lie within different Sewer Maintenance operations map sub grids Data can be downloaded here [...]
Abstract: Each grid in the Index Map was divided into 25 grids to create the House Numbering (HN) Map. The grids in the HN map are 3000 ft high and 4000 ft wide. The Mat_No refers to the House Numbering Grid and the IM_No refers to the Index Map grid. Purpose: Base map for [...]
Zoning Index Map Grid
The grid that shows the zoning index maps that cover the unincorporated areas of Los Angeles County. These maps are a conglomorate of 25 zoning maps and have less detail on them. This grid follows alignment and numbering system as the Department of Public Works House Number [...]
Thomas Brothers Pages [...]
Thomas Brothers Page and Grid [...]