Tijuana Estuary 



Map of historical changes 



1852-1985 



barrier beach washover fans 



rj*~lj intertidal mudflat that became salt marsh 



intertidal area that became floodplain 



intertidal area disturbed by grading, filling, 

 and cultivation 



area elevated bu side canyon al uvi um fans 

 (1977-1986) 



River 

 \. (1986& 1928) 



1 9 ° 4 ^— ~-_ Jv 

 ' — "" 1980 *" "■* 



1842 



Figure 2.14. Historic changes that have reduced the tidal prism of Tijuana Estuary. Modified from 

 Williams and Swanson (1987). 



24 



