{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "Hillside Management Areas (25 - 50%, and > 50% Slope) derived from a Digital Elevation Model (DEM).", "description": "

Overview:<\/SPAN><\/P>

This layer shows Hillside Management areas, which are essentially anything with a 25% or greater slope. It is broken down by '25 - 50%', and 'greater than 50%' slope categories for all unincorporated areas.<\/SPAN><\/P>

Below is a description of the source Digital Elevation Model and Slope that went into creating this dataset.<\/SPAN><\/P>

Digital Elevation Model / LAR-IAC 7:<\/SPAN><\/P>

This 1 meter Digital Elevation Model (DEM) is a model of surface elevation in the County of Los Angeles developed by the Los Angeles Regional Imagery Consortium (LAR-IAC). The LAR-IAC project encompasses the entire land area of Los Angeles County in mainland plus Catalina Island. The Area of Digital Elevation Model data developed over the Urban/Suburban area mainland covers approximately 4214 square miles. Tiles were downloaded in September, 2025 from the USGS National Map: <\/SPAN>https://apps.nationalmap.gov/lidar-explorer/#/<\/SPAN><\/A>. This dataset was re-projected from the original NAD83, UTM Zone 11N projection to State Plan, CA Zone V. The grid size is 3.28 x 3.28 feet to be equivalent to 1 meter.<\/SPAN><\/P>

Detailed product information (including accuracy report) is contained in the <\/SPAN>LAR-IAC7 Product Guide<\/SPAN><\/A>.<\/SPAN><\/P>

We highly recommend that you visit the <\/SPAN>LAR-IAC Project Website<\/SPAN><\/A> to find a rich source of information about the data and the LAR-IAC program. The site includes project documents, full FGDC compliant metadata, data downloads of related GIS used to complete the project, sub-licensing information, sample imagery and data, and information about this acquisition.<\/SPAN><\/P>

GIS Data showing flight-date information is available from the LAR-IAC Project website site, and elsewhere in the <\/SPAN>LA County GIS Data Portal<\/SPAN><\/A><\/P>

Update History:<\/SPAN><\/P>