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Introduction to USGS Arizona Program and Hydrology

Introduction to USGS Arizona Program and Hydrology. USGS Geology Mapping Biology Water Water-Science Centers. John Hoffmann. USGS Water-Science Center. Physical Setting Offices, staff, funding Hydrology Programs Laws influencing programs Example programs.

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Introduction to USGS Arizona Program and Hydrology

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  1. Introduction to USGS Arizona Program and Hydrology USGS Geology Mapping Biology Water Water-Science Centers John Hoffmann

  2. USGS Water-Science Center • Physical Setting Offices, staff, funding Hydrology • Programs Laws influencing programs Example programs

  3. AZWSC Organization and Staff

  4. AZWSC Funding, FY06 } Cooperators Total Funding Estimate: $10 million

  5. S N O 70 21 I L L I M 65 N I 20 , T S 60 E W H T 55 19 U O S N 50 I N 18 O I N T 45 E A C L R U E P P 40 17 O 40 P 1990 2000 2010 2020 2030 YEAR The importance of understanding Arizona’s water resources N O I T A L U P O P . S POPULATION IN . SOUTHWEST U L A T O PERCENT OF U.S. T POPULATION F O T

  6. Importance of Ground-Water to the West Percentage of drinking water supplied by ground water

  7. Ground-water resources of Arizona

  8. Alluvial basins (Basin and Range physiographic province) 72 basins—primary source of ground water; 900 million acre-ft Filled with sediments ranging from a few thousand to 10,000 ft thick Basins categorized to allow transfer of information and allow investigators to make predictions about the impacts of future development within each group Note: Mountain ranges surrounding the basins are crystalline and yield little to no water

  9. Flow system conceptual model: Colorado Plateau SPRINGS SPRINGS Low- permeability rocks

  10. Influence of Laws on USGS AzWSC Program(Melcher) Law Program • Lower Colorado River Decree Accounting Project • Grand Canyon Sediment transport Project, • C aquifer Project • Rural Watershed Investigations • Aquifer Storage an Subsidence Project • Death Valley Regional GW Flow Model • Urban Runoff • San Pedro River • Verde River Watershed • Border aquifers • Colorado Rover Compact, 1922 • CR Storage Project Act, 1956 • Supreme Court Decree Act, 1956 • Grand Canyon Protection Act, 1992; • National Environmental Policy Act, 1969; 18 others • Endangered Species Act, 1973 • Arizona Groundwater Management Act, 1980/Rural Watershed Initiative • Nuclear Water Policy Act, 1982 • Clean Water Act, 1989 • Section 321 of the Defense Authorization Bill, 2004 • Title II of Yavapai County land Exchange Bill, 2005 • Transboundary Aquifer Bill, 2006 Water-management related

  11. Aquifer-Storage Change and Subsidence Monitoring Stations in the TAMA Directed by Arizona ground-water law (Arizona Groundwater Management Act, 1980)to attain an annual balance between ground-water withdrawals (Qout) and recharge (Qin)by the year 2025 Qin = Qout ΔStorage = 0 Qin – Qout= ΔStorage

  12. Original Water Table Aquifer Storage Change Volume of Aquifer Drained × Water Table After Pumping Specific Yield Aquifer Storage Change

  13. Gravity The simplest type of gravimeter essentially measures the extension of a spring attached to a control mass. Δ water table before pumping Δ water table after pumping unconfined aquifer Dx g = -kDx/mass

  14. Storage Change in a portion of the Tucson Basin Spring 2005 – Summer 2006 -60,000 acre-ft ~0.4 ft per year Qin – Qout= ΔStorage

  15. Determine the Effects of Ground-Water Overdraft on: • Aquatic Communities • Riparian Areas • Endangered Species

  16. Theoretical capture by pumping for 50 years Upper San Pedro Basin in SE Arizona

  17. Introduction to USGS Arizona Program and Hydrology Questions? Next up: Jim Leenhouts--San Pedro James Callagary—Geophysical tools

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