Understanding Color-Infrared Photographs
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Geology topics
Publications and source records attributed to Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey.
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Each year the U.S. Geological Survey (USGS) produces thousands of new and revised topographic and geologic maps, as well as other types of cartographic products. To provide easy access to these maps, the USGS publishes indexes that are updated periodically.
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Published on an annual basis, this report is the earliest Government publication to furnish estimates covering nonfuel mineral industry data. Data sheets contain information on the domestic industry structure, Government programs, tariffs, and 5-year salient statistics for over 90 individual minerals and materials.
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MDWU98 is a point coverage that represents the locations of wells for
MDNET is a point coverage that represents the locations and names of a network of observation wells for the State of Maryland. Additional information on water conditions at these sites can be found in the Ground-Water Site Inventory System (GWSI) database, which is maintained by the U.S. Geological Survey.
This poster has been prepared for education purposes. Colors are near neutral. Water and swampy areas are blue-black. Healthy plant growth is green. Agricultural fields and areas with low plant growth are pink and beige. Highways, parking lots, and other black surfaces are purple. Beach sand, cleared land, and cement are white or light blue.
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The Water Resources Division of the U.S. Geological Survey, in cooperation with State agencies, obtains a large amount of data pertaining to the water resources of Florida each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding of the water resources of the State. To make these data readily available to interested parties outside the Geological Survey, the data are published annually in this report series entitled "Water Resources Data - Florida."
Water resources data for the 2000 water year in Florida consist of continuous or daily discharge for 355 streams, periodic discharge for 17 streams, continuous or daily stage for 211 streams, periodic stage for 1 stream, peak stage and discharge for 37 streams; continuous or daily elevations for 16 lakes, periodic elevations for 45 lakes; continuous ground-water levels for 393 wells, periodic ground-water levels for 1,003 wells; quality-of-water data for 124 surface-water sites and 244 wells. The data for northeast Florida include continuous or daily discharge for 145 streams, periodic discharge for 3 streams, continuous or daily stage for 21 streams, periodic stage for 0 streams; peak stage and discharge for 0 streams; continuous or daily elevations for 12 lakes, periodic elevations for 18 lakes; continuous ground water levels for 42 wells, periodic ground water levels for 404 wells; quality-of-water data for 31 surface-water sites and 62 wells. These data represent the National Water Data System records collected by the U.S. Geological Survey and cooperating local, State and Federal agencies in Florida.
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In the past decade seagrass die-offs, algal blooms, and declining numbers of shellfish and sponges have occurred in Florida Bay. These changes have been attributed to human activities; however, neither the natural patterns of change, nor the pre-human baseline for the environment have been determined. Currently, efforts are underway to restore the Everglades ecosystem to a more natural state, but the restoration should be guided by a clear understanding of the natural range of variability that exists within the ecosystem.