Figure 2. Shaded relief map of the northeastern Los Angeles basin (Mosaic of 11 USGS 10 meter 7.5 minute Digital Elevation Models (DEMS) with 3x vertical exaggeration). Chino fault (CF), Rio Hondo (RH), San Gabriel river (SGR), San Jose Hills (SJH), Santa Ana Mountains (SAM), Santa Ana river (SAR), Whittier Heights fault (WHF), Workman Hills fault (WoHF).