National Register Sites within the Santa Monica Mountains, Rim of the Valley area, & Vicinity (polygons)
Kamradt DA and Kamradt D. National Register Sites within the Santa Monica Mountains, Rim of the Valley area, & Vicinity (polygons). Santa Monica Mountains National Recreation Area
This layer contains a subset of data downloaded from the National Register of Historic Places web site as an MS Access database on 06/12/2007. An Access query produced a table of UTM Zone 11 coordinates defining polygon sites (e.g. historic districts, large properties, etc.) within California. The Access table was imported into ArcGIS and converted to a shapefile based on the UTM northings and eastings. Locations within 1500 meters of the Rim of the Valley (ROV) boundary were selected and examined on-screen for positional accuracy using StreetMap 2003, Thomas Bros. Roads 2005, 2006 Los Angeles County 1-foot resolution imagery, and 2005 NAIP imagery. The mapped polygons were reasonably located and did not require editing as the point sites did. The polygons were then overlayed on the ROV, National Recreation Area (NRA), and Santa Monica Mountain Zone (MtnZn) boundaries in ArcMap. The distance range of each resource from the ROV and other boundaries (i.e. whether the polygons overlapped 500 and 1000 m buffers) was determined to flag nearby resources. The data were projected from NAD27 to NAD83 using the NADCON transformation. Processing was completed 7/10/2007. NOTE: Restricted sites are not included in this layer.
- Type
- Geospatial Dataset
- Authors
- Kamradt, Denise; Kamradt, Denise
- Publisher
- Santa Monica Mountains National Recreation Area
- Units
- SAMO
- Keywords
- California, Conejo Valley, Cultural Resources, Los Angeles County, SAMO, Santa Monica Mountains, Santa Monica Mountains National Recreation Area, Simi Hills, Society, Ventura County