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Categories
Topics
Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(99 items)
Contamination and pollution
(94 items)
Culture and demographics
(55 items)
Earth characteristics
(807 items)
Elements
(472 items)
Field monitoring stations
(1 items)
Hazards
(3 items)
Health and disease
(6 items)
Human impacts
(52 items)
Information system design and development
(9 items)
Instrument design and development
(4 items)
Land use and land cover
(3 items)
Natural resource exploration
(109 items)
Natural resource extraction
(39 items)
Natural resources
(406 items)
Organism groupings (non-taxonomic)
(7 items)
Organisms
(6 items)
Population and community ecology
(1 items)
Water properties
(38 items)
Water quality
(22 items)
Water supply and demand
(3 items)
