Ground-water data in the Corvallis-Albany area, central Willamette Valley, Oregon
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Abstract
THE CORVALLIS-ALBANY AREA IS PART OF THE ALLUVIAL PLAIN THAT LIES BETWEEN THE CASCADE AND COAST RANGES IN THE CENTRAL WILLAMETTE VALLEY IN NORTHWESTERN OREGON. THE ALLUVIAL DEPOSITS (SAND AND GRAVEL) OF THE VALLEY PLAIN CONTAIN THE MOST PRODUCTIVE AQUIFERS IN THE AREA AND ARE CONSIDERED TO BE THE ONLY UNITS FEASIBLE FOR LARGE-SCALE DEVELOPMENT OF GROUNDWATER SUPPLIES. DURING 1971 THE SEASONAL DECLINE OF WATER LEVELS FROM WINTER TO LATE SUMMER AVERAGED ABOUT 10 FEET FOR THE ALLUVIAL DEPOSITS. THE SEASONAL CHANGE OF STORAGE WAS ESTIMATED TO BE ABOUT 130,000 ACRE-FEET. OF THIS VOLUME, ABOUT 14,000 ACRE-FEET WAS PUMPED FROM WELLS; THE REST WAS DISCHARGED THROUGH SEEPS AND SPRINGS BY EVAPOTRANSPIRATION. THE DIFFERENCE BETWEEN PUMPAGE AND NATURAL DISCHARGE INDICATES THAT A GREAT QUANTITY OF ADDITIONAL WATER IS AVAILABLE FOR DEVELOPMENT. THE STORAGE CAPACITY OF THE ALLUVIAL AQUIFERS IS ESTIMATED TO BE ABOUT 750,000 ACRE-FEET BETWEEN DEPTHS OF 10 AND 100 FEET. WATER FROM THE ALLUVIAL DEPOSITS IS CHEMICALLY SUITABLE FOR ALL USES, AS IS MOST OF THE WATER FROM PERCHED-WATER BODIES IN THE OLDER SEDIMENTARY AND VOLCANIC ROCKS.
| Publication type | Report |
|---|---|
| Publication Subtype | State or Local Government Series |
| Title | Ground-water data in the Corvallis-Albany area, central Willamette Valley, Oregon |
| Series title | Ground Water Report |
| Year Published | 1972 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Oregon Water Science Center |
| Country | United States |
| State | Oregon |
| City | Corvallis-Albany |
| Other Geospatial | Willamette Valley |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |