San Diego County Plant Atlas Grid Squares

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Grid Squares Map
To view a topographic map of any square, Click Here.

The Plant Atlas grid square system is the same one used by the San Diego County Bird Atlas and is based upon the historic Public Land Survey that divided much of the United States into townships, ranges, and sections. A section is one mile square. Each township is divided into quadrants (four Atlas grid squares). Each Atlas grid square equals nine sections (three on a side) and is nine square miles in area.
Grid square ID is assigned by a simple index system (numbers 1 through 29 going from left to right across the top of the map, and letters A through W from top to bottom along the side of the map e.g., B5, L7, M28, etc.). The list below shows the Plant Atlas grid square ID, with the corresponding township and range, and a brief name recalling notable localities in the grid square (e.g., Jacumba, Warner Springs, Lake Wohlford etc.).

Table of Grid Squares

Square	Name	Twp	Range
A3	White Oak Springs	T08	R6W	NE
A4	Cold Spring Canyon	T08	R5W	NW
A5	Tenaja	T08	R5W	NE
B2	Talega Canyon	T08	R6W	SW
B3	San Mateo Canyon	T08	R6W	SE
B4	Case Spring	T08	R5W	SW
B5	Margarita Peak	T08	R5W	SE
B6	De Luz	T08	R4W	SW
B7	Ross Lake	T08	R4W	SE
C1	San Mateo Point	T09	R7W	NE
C2	San Onofre Creek	T09	R6W	NW
C3	Jardine Canyon	T09	R6W	NE
C4	Upper San Onofre Canyon	T09	R5W	NW
C5	Roblar Creek	T09	R5W	NE
C6	De Luz Creek	T09	R4W	NW
C7	Sandia Canyon	T09	R4W	NE
C8	Upper Santa Margarita	T09	R3W	NW
C9	Rainbow	T09	R3W	NE
C10	Mt. Olympus	T09	R2W	NW
C11	Trujillo Creek	T09	R2W	NE
C12	Agua Tibia	T09	R1W	NW
C13	Eagle Crag	T09	R1W	NE
C14	Cutca Valley	T09	R1E	NW
C15	Dameron Valley	T09	R1E	NE
C16	Oak Grove	T09	R2E	NW
C17	Dick Spring	T09	R2E	NE
C18	All One God Faith Rainfrst	T09	R3E	NW
C19	Chihuahua Valley E	T09	R3E	NE
C20	Bucksnort Mt.	T09	R4E	NW
C21	Alder Canyon	T09	R4E	NE
C22	Collins Valley	T09	R5E	NW
C23	Box Canyon (Coyote Cr.)	T09	R5E	NE
C24	Butler Canyon	T09	R6E	NW
C25	Clark Valley N	T09	R6E	NE
C26	Santa Rosa Mts. NW	T09	R7E	NW
C27	Villager Peak	T09	R7E	NE
C28	Santa Rosa Mts. NE	T09	R8E	NW
C29	Travertine Palms Wash