LEVEE: Similarities Not Suitable for L.A.'s Ballona Wetlands?

PROPOSED BALLONA LEVEES ENDANGER WILDLIFE, OBSCURE VIEWS. 
Controversial Ca. State Plan to Dig Out & Bury Ballona under massive new levees.

Is a 25 to 30 foot berm / levee a bad idea for Ballona Wetlands Ecological Reserve? 
http://youtu.be/L-1NZNiMhdw  6 minutes  Oregon example. 

POWER POINT PRESENTATION ON LEVEES 
http://saveballona.org/presidents-presentations/ballona-lower-wetlands-levees.information.html