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.
Suggested Citation
Muir, K.S., 1980, Seawater intrusion and potential yield of aquifers in the Soquel-Aptos area, Santa Cruz County, California: U.S. Geological Survey Water-Resources Investigations Report 80-84, iv, 29 p., https://doi.org/10.3133/wri8084.
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 |