United States Geological Survey Yearbook

activities Administration agencies analysis applications areas assessment Assistant associated Authority Award basin Board Bureau cartographic changes Chief City City of w climate collected Commission concentrations conducted Conservation contamination continued Control cooperative County data base Department deposits distribution District District w Division earth science earthquake effects effort energy environment Environmental facilities Federal field Figure flow geographic global Government ground water ground-water hazards hydrologic increase International Lake land located major Management maps measured ment miles million mining National Center natural needs occur Office Operations organic percent Planning present processes Public range Regional requirements River rocks samples scale scientific scientists sediment Service soils sources South standard Stop studies surface tion Transportation U.S. Geological Survey understanding United University users USGS Valley Volcano Water Resources