Data & Mapping

The beautiful, compelling maps we create using GIS allow us to visualize our world, see patterns and make conclusions based on scientific data.

In 1993, when GIS (Geographic Information Systems) was still new, Sonoma Ecology Center spearheaded its use in producing the first digital map of parcels in Sonoma Valley. Today, we use GIS, cartographic skills, and an extensive collection of local spatial data to produce maps that inform work in local and national restoration, stewardship, and conservation action.

National Fishery Recovery

SEC handled the data manipulations and data storage for massive federal fisheries recovery (National Oceanic and Atmospheric Administration plans for steelhead and salmon in the Central California Coast) in 2011 and 2012.

Sediment Pollution Control Planning

Sonoma Ecology Center was the first community organization to research and monitor for a state-recognized sediment pollution control plan (the sediment TMDL for the watershed), in 2006. Read more about our sediment research and analysis.

Useful Map Resources

We have worked with a wide variety of clients, including university researchers, conservation non-profits, government agencies, and private landowners. Our recent clients include: NOAA Fisheries, Golden Gate National Park, UC Davis Road Ecology Program, Marin Municipal Water District, Sonoma County Agricultural Preservation and Open Space District, Sonoma Land Trust, Sonoma County Water Agency, and Morro Bay National Estuary Program.

Contact us for your GIS & Mapping needs!

Data & Mapping Staff

Alex Young

Alex Young

GIS Manager

M.A., Geography, University of California at Davis

Alex has over 15 years of experience in spatial analysis, cartography, and geo-spatial data management. He uses GIS and field mapping methodologies for environmental research to manage invasive species and stream health indicators.

Alex configures and uses the full suite of ESRI desktop and mobile software, Trimble GPS technology, Adobe Creative Suite, GIMP, Google Earth Professional, MS Access, and GRASS open-source GIS.

Bryan Sesser

Bryan Sesser

GIS Analyst

Bryan has over 31 years of experience in Information Technology in program and project management roles. In addition to project work, Bryan maintains our automated continuous monitoring station on Sonoma Creek.


  • Scientists and data analysts at UC Berkeley
  • Point Blue Conservation Science
  • Pepperwood Preserve
  • Sonoma County Agricultural Preservation & Open Space District
  • Sonoma Land Trust
  • Sonoma County Water Agency
  • Sonoma Resource Conservation District
  • Regional Water Quality Control Board