The Reemergence of a Dynamic Landscape: A New Delta Ecology
Alteration of Delta Landscape
These sections show the change from a tidal marshland, to an artificial landscape of islands protected by man made levees. These islands have been dried out and due to the nature of soil have compacted, making them seem as if they are large bathtubs for agricultural production. This has created a precarious condition on the levees and has resulted in 166 levee failures since 1900.
Franks Tract was flooded in the 1930's and never again reclaimed. The USGS has recently done research that shows that the soil has begun to recover, returning back to its original state.
Franks Tract Sections
These sections show the growth of soil at the site of Franks Tract. The red indicates the new soil growth.
Sacramento-San Joaquin Delta Region
This map shows the shipping routes that travel through the delta, the yellow, and the seasonal fluctuation of salt water intrusion.
Advisors: D. Turnbull, H. Eber and U. Grau