Description: Updated by City of Napa GIS on an as-needed and on demand basis. Last updated September 1, 2022.Postmiles are valid postmile points at 0.1 (1/10th) mile intervals, based on the Caltrans Linear Referencing System, updated to match TSN as it appeared on 1 October 2021. Exceptions that are included are the beginning and ends of routes (and other situations) that don't necessarily begin or end on the even 0.1 mile interval.
Service Item Id: 97d625a95b4d40b188fefb64ea3327bc
Copyright Text: Data from CalTrans ArcGIS Online: https://services1.arcgis.com/8CpMUd3fdw6aXef7/arcgis/rest/services/MapIndexAGOL_PM/FeatureServer/0
Metadata written by Infinity Technologies and updated July 11, 2024.
Description: Updated by GIS on an as-needed/by request basis. Last updated September 1, 2022.The data was created by combining Right-of-Way CAD files (dark blue line) and digitizing georeferenced maps with an approximate assessor parcel for no-map areas (green line). The data has different qualities based on the reference data and is divided into 2 groups, CAD (with an accuracy of 4 feet, Survey and soft conversion) and raster (with an accuracy within 9 feet, digitizing existing maps and assessor parcels).
Service Item Id: 97d625a95b4d40b188fefb64ea3327bc
Copyright Text: Data sourced from CalTrans ArcGIS Online: https://caltrans-gis.dot.ca.gov/arcgis/rest/services/D4/D4_Right_of_Way_Boundary/MapServer
Metadata written by Infinity Technologies and updated July 11, 2024.
Description: 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.
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