Assessment of the water resources of the Grand Ronde area, Oregon
Water-Resources Investigations Report
97-4040
Prepared in cooperation with the Confederated Tribes of the Grand Ronde Community of Oregon
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Abstract
Stream hydrographs show that throughout the Grand Ronde area most precipitation follows surface or shallow subsurface pathways to streams, resulting in rapid runoff and little natural water storage within the basin. Limited storage and low aquifer permeability restrict base flow to streams, and streamflows therefore decline rapidly once precipitation ceases. Shallow ground water and springs occur throughout the area, but because of the low permeability of aquifer materials, nearly all wells and springs have low yields. Water quality in streams, wells, and springs is generally good, but saline ground water has been reported on a number of drillers' logs for the study area and in several previous investigations of nearby areas. Further development of water resources in the Grand Ronde area is likely to be constrained by existing downstream water rights, the low permeability of geologic materials throughout the area, and possibly the intrusion of saline water. However, construction of facilities to store available water and thus compensate for low yields could provide a reliable, sustainable water supply for the Grand Ronde area.
Suggested Citation
McCarthy, K.A., Risley, J.C., Caldwell, R.R., McFarland, W.D., 1997, Assessment of the water resources of the Grand Ronde area, Oregon: U.S. Geological Survey Water-Resources Investigations Report 97-4040, Report: v, 27 p.; 1 Plate: 33.33 x 37.16 inches, https://doi.org/10.3133/wri974040.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Assessment of the water resources of the Grand Ronde area, Oregon |
| Series title | Water-Resources Investigations Report |
| Series number | 97-4040 |
| DOI | 10.3133/wri974040 |
| Year Published | 1997 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Oregon Water Science Center |
| Description | Report: v, 27 p.; 1 Plate: 33.33 x 37.16 inches |
| Country | United States |
| State | Oregon |
| Other Geospatial | Grand Ronde area |