NEWS NOTES ON SUSTAINABLE WATER RESOURCES  Hydrogeology of Hawaii  https://hi.water.usgs.gov/studies/GWRP/hydrogeology.html  The ...

NEWS NOTES ON SUSTAINABLE WATER RESOURCES  Hydrogeology of Hawaii  https://hi.water.usgs.gov/studies/GWRP/hydrogeology.html ; The main islands of Hawaii are formed by enormous basaltic shield volcanoes that were built from the ocean floor by mid-plate hot-spot volcanism. The islands are successively younger toward the southeast of the chain, with Miocene-age basalt on Niihau and Kauai at the northwestern end and active volcanoes on the Big Island at the southeastern end. The shield volcanoes along the island chain are also at different stages of geologic development. Three stages in the life of Hawaiian volcanoes—shield, postshield, and rejuvenation—form the land mass above sea level.  Each of these stages is described on the web page, with excellent illustrations to show the relationship between the geology and water resources of the islands.  This page will also be linked on the 2018 Reports Page 02 of the Sustainable Water Resources Site at https://sites.google.com/site/sustainablewaterresources/ ">https://sites.google.com/site/sustainablewaterresources/ ; Tim SmithSustainable Water Resources CoordinatorGovernment Web Site, https://acwi.gov/Sustainable Water Resources Site, https://sites.google.com/site/sustainablewaterresources/ ">https://sites.google.com/site/sustainablewaterresources/ ;