Washington Department of Natural Resources Geologic
During the last ten years, the Washington Department of Natural
Resources (DNR) has completed several studies to improve the geological
mapping of the 14 USGS map quads that encompass the Spokane area.
These studies include:
- Remapping the Quaternary geology of the Missoula Flood deposits;
- Refining areas of bedrock geologic mapping; and
- Reconciliation of bedrock and Quaternary geology in conjunction
with the Natural Resources Conservation Service.