This database is a set of entities and attributes as referenced to individual geographic locations, hereafter referred to as "Point". Each individual Point has a location relative to all other points in the database as referenced to a coordinate grid. The relative location of the points as represented in this database correspond to the physical or determined locations of Survey Control Monumentation.
Attribute values of each point may contain accuracy data, physical descriptions on the monuments, descriptions for retracement and recovery, horizontal and vertical reference datum’s, dates of recovery, determination, origin of data values, and methods used for value determination.
Project reports by hard copy are also referenced by book and contract number and physically archived at Geographic Services. These reports contain all original instructions, maps, schematics, diagrams, existing control, obstruction diagrams, site log sheets, post processing information and copies of the minimal and fully constrained adjustments as well as geoid modeling data. Vertical control project reports contain instructions maps, route schematics, copies of electronic collection of raw data, field book and adjustments. Copies of the existing control used to constrain also included.
This database has been developed and maintained to provide storage and retrieval capabilities to users for data values associated with Survey Control Monumentation. The database associated with Survey Control Monumentation. The database is an efficient tool that can provide accurate positions to reference and catalog monuments for inventory purposes as well. Originally designed by Geographic Services for Primary Control, the system was expanded to be made available for regions to utilize for Right of Way, Alignment and other secondary control.
The Washington Department of Transportation makes no warranty to the validity of this information and shall not be liable to the user for any activity involving the product with the respect to the following:
Information contained here in no way replaces the long standing survey practices such as proper research and development of methods and routines of providing data in the field or office.
Users are cautioned to employ this data at their own risk.
