Arroyo Grande Creek


Arroyo Grande Creek is located in southern San Luis Obispo County. The watershed covers approximately 104,045 acres. Its heaswaters begin in the Los Padres National Forest between San Luis Obispo and Santa Margarita Lake and it flows from Lopez Mountain approximately 23 miles southwest to the ocean near Oceano.

**Note that for this map series, there were difficulties downloading the 10 meter raster data from the USGS website, therefore a 30 meter resolution DEM was used for the elevation data. This causes a rougher outlining of the watershed boundary.

Click the image below to see a grid map of Arroyo Grande Creek watershed. The grid represents 4000x5000 meter sections on the ground. Each section is available for download further below.

small grid

Also available are some extra views of the watershed in various forms (i.e. w/o grid, hillshade, etc.)

small county   small hillshade   small geogrid

Arroyo Grande Creek Watershed PDF (12.6MB)

Arroyo Grande Creek Watershed - Grid View PDF (12.6MB)



Soil Maps


Geology Maps

Note: Geology sections R, CC, DD and II were not available at the time of publication.
The information is now available on SLO Datafinder.