Updates to the Upper Klamath and Harney Basin interactive data mappers
The Upper Klamath Basin and Harney Basin interactive web maps have been updated with additional well sites and recent groundwater level field measurements collected during 2025-26 site visits.
Recent updates:
The Upper Klamath Basin and Harney Basin interactive web maps have been updated with additional well sites and recent groundwater level field measurements collected during 2025-26 site visits. The total amount of sites and new measurements added for both websites are listed below, including the number of measurements from each of the three contributing agencies: USGS, Oregon Water Resources Department (OWRD), and California Department of Water Resources (CDWR).
On each mapper linked below, site locations are shown as red symbols and site information appears in the accompanying tables. Several download options are available, including map images and Excel files. You can also create your own map using the data exploration tools and download an image or an Excel file of the site table. Click on “About” in the upper right corner of the maps for more info and instructions.
Upper Klamath Basin Well Mapper: 439 total sites with newly added 2025-26 groundwater well level measurements
View the Upper Klamath Basin Well Mapper
| Agency | Total new measurements added: |
|---|---|
| USGS | 8160 |
| OWRD | 18332 |
| CDWR | 49804 |
USGS-OWRD Upper Klamath Basin Well Lithology and Construction Grapher
Harney Basin Well Mapper: 501 total sites with newly added 2025 groundwater well level measurements
View the Harney Basin Data Mapper
| Agency | Total new measurements added: |
|---|---|
| USGS | 6868 |
| OWRD | 12038 |
USGS-OWRD Harney Basin Well Lithology and Construction Grapher
Photo during a routine groundwater well measurement:
