Digital Geologic Map of Oregon Completed

ogdc5Six Year Project Compiles 345 Separate Maps/Datasets and Covers 96,000 Square Miles

The Oregon Department of Geology & Mineral Industries (DOGAMI) has finished a six year project to develop a digital geologic map of Oregon and to compile this geologic information into a database for the entire state. This completed map and data, the Oregon Geologic Data Compilation (OGDC-5), is the most accurate, complete and up to date geologic map in Oregon’s history.

By integrating the work of many individual geologic mappers into a digital data set, the compilation becomes a “living map” that can be accessed on many different levels and can change as new information is added. The data are stored in a geographic information system (GIS) format with links to a relational database. Knowledge of and access to GIS and database software applications are essential to the use of the DVD version of the compilation.

Also being released is Open-File Report O-09-03, Preliminary Digital Geologic Compilation Map of Part of Northwestern Oregon, by Lina Ma, Ray E. Wells, Alan R. Niem, Clark A. Niewendorp, and Ian P. Madin. This map displays simplified OGDC-5 data in a map format for this portion of the state.

While OGDC-5 is primarily for users of GIS, the data from the compilation is being used for the new Oregon Sesquicentennial Geologic Map, which is being created for a general audience interested in learning more about the amazing geologic history of Oregon. This map will be available later this summer.

Earlier versions of OGDC-5 are already being used throughout the state for projects and programs ranging from the identification of groundwater resources and the locations of naturally occurring hazardous materials to mapping landslides and earthquake faults.

“By using digital mapping technology we are able to present much more detail than conventional paper maps. We will be able to better assist in the understanding of a variety of environmental, resource-availability, geologic-hazard, and land-use planning questions,” said Vicki S. McConnell, State Geologist and Director of DOGAMI.