lotus
Uploaded by
7 SLIDES
391 VUES
70LIKES

Stephen Anthony U.S. Geological Survey Pacific Islands Water Science Center Honolulu, Hawaii

DESCRIPTION

Need for Accurate Horizontal and Vertical Datum for Groundwater-Resource Assessments in Hawaii and the Pacific. Stephen Anthony U.S. Geological Survey Pacific Islands Water Science Center Honolulu, Hawaii. U.S. Department of the Interior U.S. Geological Survey. USGS Water Mission.

1 / 7

Télécharger la présentation

Stephen Anthony U.S. Geological Survey Pacific Islands Water Science Center Honolulu, Hawaii

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Need for Accurate Horizontal and Vertical Datum for Groundwater-Resource Assessments in Hawaii and the Pacific Stephen AnthonyU.S. Geological Survey Pacific Islands Water Science CenterHonolulu, Hawaii U.S. Department of the Interior U.S. Geological Survey

  2. USGS Water Mission • Provide information to manage, protect, and enhance water resources • Address water-related hazards • Non-regulatory role • Provide information that is reliable, impartial, and timely

  3. Partnerships with Federal, State and Local Agencies in Hawaii and the Pacific • Water-resource monitoring and assessment programs, FY 2011 • NPS, US Army, US Navy, US Marine Corps • Hawaii CWRM, SCD, DOH, DOT, DHHL, and OHA • County water and public works departments • University of Hawaii and University of Guam • Reimbursable funding ~ $3.0 M per year • USGS funding ~ $1.5 M per year

  4. Needfor Accurate Vertical and Horizontal Datum • Groundwater provides more than 90% of the public water supply in Hawaii and Guam • Water table of freshwater lens is extremely flat • Potential errors in coastal areas can be high • Resource assessments require accurate water level measurements referenced to common datum (mean sea level) • Determine groundwater flow directions and change in freshwater storage • Calibrate numerical groundwater flow models used to assess water availability

  5. Freshwater Lens, Pearl Harbor, Oahu

  6. Pearl Harbor Area Groundwater Levels, 2003

  7. Priority Areas Requiring Periodic Updates of Vertical & Horizontal Datum • Recently completed • Central Maui, 2003 • Lahaina, Maui, 2007 • West Hawaii Island, 2009 • Eastern Molokai, 2009 • Northern Guam, 2010 • Current needs • Pearl Harbor area, Oahu, 2011

More Related