Oct 1, 2021

Having an accurate basemap is critical for monitoring and assessing our valuable habitats and supporting their restoration and protection. To assist with developing these important resources, USEPA has funded two mapping projects to develop basemaps in the Delta and Baylands.

The Baylands Change Basemap will update the existing map of tidal marsh, tidal flats and diked baylands to incorporate the many changes in baylands distribution and abundance that have occurred over the last two decades. It will also include new information about land use and infrastructure that affects baylands restoration and management constraints and opportunities. To ensure the map is as up-to-date as possible, the project will develop procedures for ongoing local updates and change detection to cost-effectively maintain the basemap’s high value. 

The Delta Aquatic Resource Inventory (DARI) will provide a standard regional approach to wetland classification and mapping to support multiple current efforts in the Delta, including regional watershed restoration planning, tracking, and reporting. A draft dataset has been produced and is currently being reviewed by the workgroup. 
Both final maps will be integrated into California Aquatic Resource Inventory (CARI) and made available to the public on EcoAtlas.

More information on these important mapping projects is provided in their factsheets:



Programs and Focus Areas: 
Environmental Informatics Program
Resilient Landscapes Program