Seawater intrusion and potential yield of aquifers in the Soquel-Aptos area, Santa Cruz County, California
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Abstract
Seawater has intruded the Purisima Formation in the interval 0-100 feet below sea level in the Soquel-Aptos area. It occurs in the central part of the area and extends inland about half a mile.
The potential yields of the two principal aquifers in the Soquel-Aptos area are 4,400 acre-feet per year from the Purisima Formation and 1,500 acre-feet per year from the Aromas Sand. Pumping from the Purisima Formation, averaging about 5,400 acre-feet per year since 1970, has caused water levels along the coast to decline below sea level and has allowed seawater to enter the aquifer.
Seawater intrusion and ground-water storage could be monitored in all depth zones by expanding the observation-well network to include a number of shallow wells, one deep well inland from the coast, and three deep wells along the coast.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Seawater intrusion and potential yield of aquifers in the Soquel-Aptos area, Santa Cruz County, California |
| Series title | Water-Resources Investigations Report |
| Series number | 80-84 |
| DOI | 10.3133/wri8084 |
| Year Published | 1980 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | iv, 29 p. |
| Country | United States |
| State | California |
| County | Santa Cruz County |
| Other Geospatial | Soquel-Aptos area |
| Google Analytic Metrics | Metrics page |