No. 257. EXTREME AND MEAN ELEVATIONS-STATES AND OTHER AREAS 1 Sea level. Washington. Wisconsin. Other areas: Puerto Rico. American Samoa.. Cerro Galera. Mount Lamlam Mount Rainier. 14,410 Pacific Ocean. 83 950 1,700 Spruce Knob. 4,862 Potomac River. 240 1.500 Timms Hill. 1,952 Lake Michigan. 581 1,050 13, 785 Crown Mountain. * "Sec." denotes section; "T", township; "R", range; "N", north; "W", west; "S", south. Source: Dept. of the Interior, Geological Survey; Extreme and Mean Elevations in the United States and its Possessions, MI0-18. Source: Dept, of the Interior, Geological Survey; Named Summits of the United States Over 14,000 Feet Above Sea Level, MI0-20. No. 259. TORNADOES, FLOODS, AND TROPICAL CYCLONES: 1931 TO 1966 Represents zero. ΝΑ Not available. 1 Tropical cyclones have maximum winds of 39 to 73 miles per hour; hurricanes have maximum winds of 74 miles per hour or higher. 2 Estimated. Source: Dept. of Commerce, Environmental Science Services Administration; Climatological Data National Summary. Monthly with annual summary. No. 260. ESTIMATED WATER USE: 1900 To 1965, AND PROJECTIONS TO 1980 [In billions of gallons dafly average. In preparing these projections, it was estimated that the population residing in the United States (conterminous area) would grow from 176.2 million in 1959 to 230.8 million in 1980, and that the index of industrial production would rise from approximately 152 to 330 in the same period. See also Historical Statistics, Colonial Times to 1957, series J 91-102] Total Ground Total Ground Total Ground Total Ground Total Ground Total Ground ! Total take, including delivery losses but not including reservoir evaporation. 1 Rural farm and nonfarm household and garden use, and water for farm stock and dairies. 1 Manufacturing and mineral industries, rural commercial industries, air conditioning, resorts, hotels, motels, military and other State and Federal agencies, and other miscellaneous uses. Source: Dept. of Commerce, Business and Defense Services Administration; Water Use in the United States, 1900-1980, and unpublished data. No. 261. INVENTORY OF PUBLIC WATER Supplies for Community WATER SYSTEMS: 1963 [Includes only systems serving a population of 25,000 or more. Estimated total number of public water systems in the United States (conterminous area) is 21,000 systems serving a population of approximately 144 million. An estimated 16.0 percent of water used by manufacturing industries is supplied by public water systems] Source Dept. of Commerce, Business and Defense Services Administration. Compiled from unpublished data provided by Dept. of Health, Education, and Welfare, Public Health Service. No. 262. POPULATION USING FLUORIDATED WATER-STATES AND PUERTO [As of December 31. Covers both natural and controlled fluoridation] 1 U.S. population for Dec. 31, 1966, based on provisional estimates in Bureau of the Census: Current Population Reports; Population Estimates, 1966 (Series P-25, No. 348, Sept. 16, 1966) and U.S. Census of Population: 1960; Number of Inhabitants: Final Report PC (1). Source: U.S. Census of Housing: 1960, Series HC(1), Nos. 1-52. Includes adjustments for population growth based on Bureau of the Census estimates. Source: Dept. of Health, Education, and Welfare, Public Health Service; Fluoridation Census, 1966. No. 263. SUSPENDED PARTICULATE MATTER LEVELS IN CITIES, BY POPULATION [Particulate matter levels in micrograms per cubic meter. Based on 35,327 air samples taken in 333 cities. Suspended particulate matter consists of particles of smoke, dust, and fumes and droplets of viscous liquid remaining in the air for varying periods of time and ranging from less than 1 micron (1/25,000 inch) to 100 microns] Source: Dept. of Health, Education, and Welfare, Public Health Service; Air Pollution Measurements of the National Air Sampling Network, 1957-1961; annual reports, Air Quality Data; and unpublished data. No. 264. AVERAGE BETA RADIOACTIVITY CONCENTRATIONS IN AIR-STATES AND PUERTO RICO: 1959 TO 1965 [In micromicrocuries per cubic meter. Values based on one air sampling station per State, except as noted] Source: Dept. of Health, Education, and Welfare, Public Health Service; Radiological Health Data. Monthly. 247079 O67 13 |