| Description | |||
| Abstract: Contains 2 foot contour elevation feature classes, for the years 2000 and 2006, and ground monumentation for use by surveyors. | |||
| Purpose: Topographic information is used for creating TINs and RASTERs, which support 3D mapping and ground slopes visualization. TINs and RASTERs of elevation data support spatial analyses related to slopes, viewsheds, water runoff, and other map algebra-based applications. | |||
| Supplemental Information: Contours 1999: were considered part of the City's "Planimetric" Base Mapping. Planimetric basemapping was originally interpreted (1999-2000) by Michael Baker Corporation, from the orthophotography and digital elevation model, as part of the first phase of GIS implementation. Contours 2007: still considered part of the City's planimetric base mapping, these contours were obtained via the "VA Base Mapping Project (VBMP)." The City contracted in 2006-07 to upgrade the VA Geographic Information Network (VGIN) orthophotography VBMP product from 1 foot resolution to 6 inch resolution, and additionally contracted to have 2 foot resolution contours developed. The Ground Monumentation was provided/obtained during the City's original base mapping project in 1999, and has remained little changed in the interim. | |||
| Contact | |||
| Custodian: | Pravin Mathur | ||
| Department: | Public Works | ||
| Position: | GIS\Cityworks Manager | ||
| Address: | 900 E Broad St, 7th Floor | ||
| City: | Richmond | ||
| State: | Virginia | ||
| Zip Code: | 23219 | ||
| Email: | Pravin.Mathur@richmondgov.com | ||
| Time Period of Content | |||
| Beginning Date: | 1999 | ||
| Ending Date: | 2008 | ||
| Status | |||
| Progress: | Complete | ||
| Update Frequency: | None planned | ||
| Spatial Domain | |||
| West Coordinate: | -77.614486 | ||
| East Coordinate: | -77.370908 | ||
| North Coordinate: | 37.605797 | ||
| South Coordinate: | 37.438044 | ||
| Spatial Data Information | |||
| Data Type: | vector digital data | ||
| Data Format: | SDE Feature Dataset | ||
| Data Projection: | Lambert Conformal Conic | ||
| Access and Usage Information | |||
| Access Constraints: | none | ||
| Use Constraints: | All GIS layers and datasets are owned by the City of Richmond and can not be modified, re-distributed, and/or re-sold without a sub-licensing agreement. All guarantees of validity expire once a dataset leaves the City of Richmond firewall or physical premises. Acknowledgement of the City of Richmond GIS would be appreciated in products derived from these data. | ||
| Entity and Attribute Information | |||
| Entity Name: | vector.ric.base_Contour2007 | ||
| Entity Type: | Feature Class | ||
| Entity Count: | 85059 | ||
| Entity Name: | vector.ric.base_Contour1999 | ||
| Entity Type: | Feature Class | ||
| Entity Count: | 289693 | ||
| Entity Name: | vector.ric.base_GroundControl_OLD | ||
| Entity Type: | Feature Class | ||
| Entity Count: | 54 | ||
| Entity Name: | vector.ric.base_GroundControl | ||
| Entity Type: | Feature Class | ||
| Entity Count: | 53 | ||
| Entity Name: | vector.ric.base_ElevationPoint1999 | ||
| Entity Type: | Feature Class | ||
| Entity Count: | 395890 | ||