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Categories
Topics
Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(104 items)
Contamination and pollution
(96 items)
Culture and demographics
(56 items)
Earth characteristics
(834 items)
Elements
(490 items)
Field monitoring stations
(1 items)
Hazards
(3 items)
Health and disease
(6 items)
Human impacts
(53 items)
Information system design and development
(9 items)
Instrument design and development
(4 items)
Land use and land cover
(3 items)
Natural resource exploration
(111 items)
Natural resource extraction
(40 items)
Natural resources
(416 items)
Organism groupings (non-taxonomic)
(8 items)
Organisms
(6 items)
Population and community ecology
(2 items)
Water properties
(40 items)
Water quality
(22 items)
Water supply and demand
(3 items)
