Bay Area Aquatic Resources Inventory (BAARI) is a detailed base map of the Bay Area's aquatic features that includes wetlands, open water, streams, ditches, tidal marshes and flats. BAARI was developed using a Geographic Information System (GIS) with true color imagery and a suite of ancillary data sources to consistently map aquatic resources around the Bay Area.  The draft GIS dataset was extensively reviewed by regional wetland scientists and stakeholders to ensure it is as accurate as possible. Aquatic features were hand-digitized while referencing ancillary national and local datasets for elevation, streams and wetlands.  Google Earth aereal imagery was used for spotting seasonal variations. Learn more about BAARI mapping procedures and standards in the BAARI Standards and Methodology document.

BAARI is a living dataset that is periodically updated through a map stewardship effort.  Local wetland scientists and managers can suggest updates to improve the accuracy and detail of the GIS dataset using the CARI Editor tool on EcoAtlas .  This BAARI v2.1 dataset (available for download on this webpage) includes updates to stream and wetland features in the Marin, Sonoma and Santa Clara Counties.  The GIS metadata (found in the downloadable zip file below) includes a more detailed description of all the updates in this updated version of BAARI. 

This project was supported by EPA Grant # EM-00T34101 through a sub-agreement with the Bay Area Association of Governments (ABAG).  

Creation Date: 
Tuesday, June 30, 2015
Last Updated: 
Thursday, December 28, 2017
Type of Data: 
GIS vector dataset
Programs and Focus Areas: 
Environmental Informatics Program
Geographic Information Systems
Resilient Landscapes Program
Wetland Monitoring & Assessment
Location Information
General Project Location(s): 
San Francisco Bay Area
Data Availability
Please Cite This Dataset as: 

San Francisco Estuary Institute and Aquatic Science Center (SFEI ASC). 2017. "Bay Area Aquatic Resource Inventory (BAARI) Version 2.1 GIS Data." Accessed [date retrieved].

Terms of Use: 
Copyright 2015 San Francisco Estuary Institute.
This file is part of BAARI.
BAARI is free data: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
BAARI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with BAARI. If not, see
Data File(s): 
Package icon BAARI_v2pt1__SFEI_2017.zip93.54 MB