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USGS Quad Map Grids

Pasadena Quad

These datasets contain the geographic extent of USGS 1:24,000 topographic maps (7.5- by 7.5-minute quadrangles).

Data Downloads

LA County: This dataset is optimized for LA County – some quad sheets are actually extended beyond the cord grid system to cover small areas of coastline.

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US Geological Survey (USGS) Topographic Maps


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 […]