Banning Ranch is an ecological staircase:

Red--existing preserves for Least Tern

Light Blue--"Tidal River" portion of the Santa Ana River

Light Green--Estuary Wetlands, small islands, riparian habitats, tidal canals

Tan--Coastal Bluffs

Dark Green--Arroyos

Light Purple--Mesa Area with vernal pools, protected fairy shrimp habitats, protected coastal sage areas, protected gnatcatcher habitats