Contours, 5 ft interval, Watershed area
- Towill, Inc.(comp.)
- Elevation Contours of the Napa River Watershed Area, 5 foot interval. The area covered by this data is referred to as the Watershed Area because it lies within the Napa River Watershed which is roughly the western half of the county. The DTM is based on LiDAR data acquired in May of 2003.
- Napa County (Calif.). County Of Napa.
- Napa County (Calif.)
- Elevation, Topography, and Contours
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