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  2. Apr 5, 2024 · Science for a Changing World. We monitor, assess, map, and conduct targeted scientific research so that policy makers and the public have the understanding they need to address complex environmental, natural resource, and public safety issues.

  3. 4 days ago · The United States Geological Survey (USGS) defines a main-stem segment by listing coordinates for its two end points, called the source and the mouth. Some well-known rivers like the Atchafalaya , [2] Willamette , [3] and Susquehanna [4] are not included in this list because their main stems are shorter than 500 miles.

  4. Apr 10, 2024 · Explore all data by the topics and refine type to find the digital information in a format suitable for direct input to software that can analyze its meaning in the scientific, engineering, or business context for which the data were collected.

  5. 1 day ago · GeMS is intended to provide a stepping stone toward development of multimap databases, in particular the National Geologic Map Database (NGMDB). Please visit our GeMS site. Related, Older Database Designs. This list focuses on the work by USGS and AASG staff, ca. 1998-2010, to define conceptual data models and physical implementations, mostly ...

  6. Apr 8, 2024 · USGS US Topo and Historical Topographic Map Collection. Download a list of historic and current topographic maps including revision years. This site is text based and includes scales other USGS sites do not like and other Departments like NOAA's Ocean Survey. Purchase a USGS map. Free Printable USGS PDF Quads on 8.5 x 11" paper.

  7. Apr 4, 2024 · Presented in both tabular form and as vector points, USGWD comprises over 14.2 million well records with attributes, such as well purpose, location, depth, and capacity, for wells constructed as...

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