Seawater intrusion challenges coastal communities

This attachment is page one of a two-page PDF document scan I made from the Washington State Department of Ecology, from an newsletter "Coastal Currents" Vol XV No 10  April 1991 with the above title.  Page 2 will be on my next blog entry.

Risk factors for salt water intrusion into wells include proximity to coast (<500m), well depth (>200ft),  pumping rate and/or well density, and peninsulas and low-lying areas.