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Technical Assistance

Monitoring/Data Collection

GPS/GIS analysis

What is GIS?

Geographic Information System (GIS) is a set of tools which allow for storage, management, modification, analysis and visualization of spatial and tabular data. GIS allow the display of information about defined areas, and can perform spatial analysis using geographic databases. GIS technology integrates common database operations such as query and statistical analysis with the unique visualization and geographic analysis benefits offered by maps.

 

How does the RCD use GIS?

The Napa County RCD uses GIS to support all ongoing projects and has produced many maps for meetings, reports, and presentations.  RCD staff can create maps that convey information about the Napa River watershed at many scales.  RCD staff use ArcGIS to analyze and display GIS data.

 

Maps help us answer watershed questions, such as: Where are sensitive areas in the watershed? Where are salmonids distributed? What land use changes have occurred over time? Where are key habitat features along streams, such as spawning habitat, riparian canopy, and juvenile rearing habitat?

 

Maps

Subwatershed boundaries in Napa County (pdf)

Elevation map of Napa County (pdf)

 

Links

Napa County RCD Library