Owing to population growth, freshwater demand on Guam has increased in the past and will likely increase in the future. During the early 1970s to 2010, groundwater withdrawals from the limestone Northern Guam Lens Aquifer, the main source of freshwater on
Gingerich, Stephen B. sbginger@usgs.gov. The effects of withdrawals and drought on groundwater availability in the Northern Guam Lens Aquifer, Guam. 2013-01-01.