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2. List of aquifers in the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_aquifers_in_the...

   Aquifers of the United States Withdrawal rates from the Ogallala Aquifer.. This is a list of some aquifers in the United States.. Map of major US aquifers by rock type. An aquifer is a geologic formation, a group of formations, or a part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to groundwater wells and springs.

3. Hydrologic unit system (United States) - Wikipedia

   en.wikipedia.org/wiki/Hydrologic_unit_system...

   Aquifers of the United States are organized by national principal aquifer codes and names assigned by the National Water Information System (NWIS). Aquifers are identified by a geohydrologic unit code (a three-digit number related to the age of the formation) followed by a 4 or 5 character abbreviation for the geologic unit or aquifer name. [10]

4. List of aquifers - Wikipedia

   en.wikipedia.org/wiki/List_of_aquifers

   Download as PDF; Printable version; ... The following is a partial list of aquifers around the world. ... United States ...

5. GeoPDF - Wikipedia

   en.wikipedia.org/wiki/GeoPDF

   GeoPDF is a line of map and imagery products created by TerraGo software applications. GeoPDF products use geospatial PDF as a container for maps, imagery, and other data used to deliver an enhanced user experience in TerraGo applications. However, GeoPDF products conform to published specifications including both the OGC best practice for PDF ...

6. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   Open source multi-backend library for viewing and manipulating PDF files. Bundled with a viewer with the same name for the X Window System. PDF Studio: Proprietary: Yes Yes Software for viewing and editing PDF documents Inkscape: GNU GPL: Yes Technically not a PDF editor, but can be used as such page by page Adobe Reader: Proprietary freeware Yes

7. Principal aquifers of California - Wikipedia

   en.wikipedia.org/wiki/Principal_aquifers_of...

   California aquifers, excerpted from map in Ground Water Atlas of the United States (USGS, 2000): Lavender is "other" for "rocks that generally yield less than 10 gal/min to wells"; dark green-blue (3) are the California coastal basin aquifers, bright-turquoise blue (7) is the Central Valley aquifer system, flat cobalt-blue (1) down south is Basin and Range aquifers