No. 332. LANDS UNDER JURISDICTION OF BUREAU OF INDIAN AFFAIRS—ACREAGE, BY STATE: 1940 TO 1982 [In thousands of acres. Excludes States with less than 500 acres in years specified. Beginning 1960, taxable lands generally included. Beginning 1975, includes tribal fee lands. See also Historical Statistics, Colonial Times to 1970, series J 16-19) - Represents zero. NA Not available. Private landholdings of individual Indians. Includes 3,000 acres in SC, not shown separately. No. 333. URBAN LAND AREA-STATES: 1960 TO 1980 fin acres. Urban areas include central cities and adjacent urbanized fringe zones of urbanized areas plus all incorporated and unincorporated places of 2,500 or more inhabitants outside urbanized areas. For more information on urban, see text, p. 1) Based on urban resident population enumerated as of April 1. Source: U.S. Dept. of Agriculture, Economic Research Service, Expansion of Urban Area in the United States: 1960-1980 (Economic Research Service Staff Report AGES830615). Data from U.S. Bureau of the Census. No. 334. Extreme And Mean Elevations—States And Other Areas (One foot =305 mater] Z Less than 5 meter. 'Sea level. '"Sec." denotes section; T," township; - Represents zero. Figures are lengths of general outline of seacoast. Measurements were made with a unit measure of 30 minutes of latitude on charts as near the scale of 1:1,200,000 as possible. Coastline of sounds and bays is included to a point where they narrow to width of unit measure, and includes the distance across at such point. 2 Figures obtained in 1939-1940 with a recording instrument on the largest-scale charts and maps then available. Shoreline of outer coast, offshore islands, sounds, bays, rivers, and creeks is included to the head of tidewater or to a point where tidal waters narrow to a width of 100 feet. Source: U.S. National Oceanic and Atmospheric Administration, The Coastline of the United States, 1975. No. 336. WATER AREA, OTHER THAN INLAND WATER-STATES (Includes only that portion of body of water under the jurisdiction of the United States, excluding Alaska and Hawaii. Excludes inland waters; see footnote 2, table 1. One square mile=2.59 square kilometers) AREA AREA BODY OF WATER BODY OF WATER Total ........................... 9,938 1.450 4,398 2,631 1,440 18 96 . .. ...... . ....... Atlantic coastal water... Florida....... . 192,603 Gulf of Mexico coastal water ... Alabama ..... Louisiana..... Texas..... 36 Lake Michigan. 357 Illinois.......... Indiana........ Michigan ... New York Harbor ................................... 907 New York .................................. ........ No. 337. Lengths Of Principal North American Rivers [Comprises rivers 600 miles or more in length. Length represents distance to designated outflow from (a) original headwater of named river where name applies to entire length of channel, or (b) upper limit of channel so named, usually the junction of 2 tributaries or headwater streams. One mile = 1.609 kilometers] Mississippi. Upper/to mouth of Missouri 1.171 1.884 Yukon/Bering Sea 1.900 Source: U.S. Geological Survey, unpublished data No. 338. Water Withdrawals And Consumption Per Day—States And Puerto Rico: 1980 [Figures may not add due to rounding. Withdrawal signifies water physically withdrawn from a source. Includes fresh and saline water; excludes water used for hydroelectric power) - Represents zero. Z Less than 50 mdlton 'Based on population as of July 1 ■ Includes rural. industrial and steam electric withdrawal (not shown) ■ Evaporated, transpired or incorporated into products, excludes irrigation conveyance losses by evapotran&ptrabon. * Includes Virgin Islands Source: US Geological Survey. Estimated Use of Water m the United States in 1900. Circular 1001 Water Withdrawn—Water Quality—Polluting Discharges 199 No. 339. U.S. Water Withdrawals And Consumption Per Day By End-use: 1940 To 1980 [Includes Puerto Rico. See headnote, table 336. See also Historical Statistics, Colonial Times to 1970, series J 92-103] 1 Based on Bureau of the Census resident population as of July 1. 'Includes domestic central and commercial water withdrawals. 3 Based on population served. * Rural farm and nonfarm household and garden use, and water for farm stock and dairies. a For 1940-1960, includes manufacturing and mineral industries, rural commercial industries, air conditioning, resorts, hotels, motels, military and other State and Federal agencies, and miscellaneous; thereafter, includes manufacturing, mining and mineral processing, ordnance, construction, and miscellaneous. Source: 1940-1960, U.S. Bureau of Domestic Business Development, based principally on committee prints, Water Resources Activities in the United States, for the Senate Committee on National Water Resources, U.S. Senate, thereafter U.S. Geological Survey, Estimated Use of Water in the United States in 1980, circular 1001 and previous quinquennial issues. No. 340. National Ambient Water Quality In Rivers And Streams—Violation Rate: 1973 TO 1982 [In percent. Violation level based on U.S. Environmental Protection Agency water quality criteria. Violation rate represents the proportion of all measurements of a specific water quality pollutant which exceeds the "violation level" for that pollutant. "Violation" does not necessarily imply a legal violation. Data based on U.S. Geological Survey's National Stream Quality Accounting Network (NASQAN) data system; for details, see source. Years refer to water years. A water year begins in Oct. and ends in Sept ng - micrograms, mg milligrams For metric conversions, see p. xu] No. 341. Polluting Discharges Reported In U.S. Waters: 1970 To 1982 Source: U.S. Coast Guard, Polluting Incidents In and Around US. Waters, calendar years 1960 and 1982. |