"Significant Ecological area (SEA)" means an area that is determined to possess an example of biotic resources that cumulatively represent biological diversity, for the purposes of protecting biotic diversity, as part of the Los Angeles County general plan or the city's general plan. For more information, please access the Department of Regional Planning's SEA page here.

UPDATE HISTORY:

• 12/27/12 - for the updated Santa Clarita Valley Area Plan going into effect.

• 9/5/13 - to take out insignificant parcel portions (slivers and portions of parcels less than 100 sq. feet) as decided on at a Project Review meeting on 8/5/13 - Management and County Counsel present. SEA numbers in newly adopted Santa Clarita Valley Area Plan also taken out.

• 6/17/15 - updated the SEAs in the Antelope Valley following final Board adoption on 6/16/15.

• 11/5/15 - following effective date of General Plan, all boundary adjustments within the General Plan area were incoroporated into this layer.

• 4/28/16 - updated label field to have the prefix "CRA:" for all the Coastal Resource Areas.

• 11/21/18 - updated following annexation to the city of Santa Clarita. Cruzan Mesa Vernal Pools SEA now has a portion within the city's jurisdiction.