by U.S. Dept. of the Interior, U.S. Geological Survey, Information Services [distributor] in Pembroke, N.H, Denver, CO .
Written in English
|Statement||by Keith W. Robinson, Jean P. Campbell, and Norbert A. Jaworski.|
|Series||Water-resources investigations report ;, 03-4012|
|Contributions||Campbell, J. P., Jaworski, Norbert A., National Water-Quality Assessment Program (U.S.), Geological Survey (U.S.)|
|LC Classifications||GB701 .W375 no. 03-4012|
|The Physical Object|
|Pagination||vii, 20 p. :|
|Number of Pages||20|
|LC Control Number||2003628242|
Additional Physical Format: Online version: Robinson, Keith W. Water-quality trends in New England rivers during the 20th century. Pembroke, N.H.: U.S. Dept. of the. Abstract. Water-quality data from the Merrimack, Blackstone, and Connecticut Rivers in New England during parts of the 20th century were examined for trends in concentrations of sulfate, chloride, residue upon evaporation, nitrate, and total phosphorus. Water quality trends in New England rivers during the 20th century Series Water-resources investigations report ; Notes Shipping list no.: P. "National Water-Quality Assessment Program." Includes bibliographical references (p. ). Also available via Internet at the USGS web site. This mapper provides results from the largest-ever assessment of water-quality changes in the Nation's streams and rivers. More than million water-quality records from over Federal, State, Tribal, and local organizations were screened as part of this assessment.
Observed trends in 24 measures of water quality for the period from to provide new insight into changes in stream quality that occurred during a time of major changes in both terrestrial. Trends in the Nutrient Enrichment of U.S. Rivers during the Late 20th Century and Their Relation to Changes in Probable Stream Trophic Conditions. American Public Works Association Grand Boulevard, Suite , Kansas City, MO Phone () • Fax () Web • E-mail [email protected] Environment Community News Update – Posted Aug Water Quality Trends in New England Rivers During the 20th Century. USGS Water Resources Investigations Report WRIR Washington, DC: United States Geological by: 8.
20th century in two Midwestern Corn Belt streams, Journal of Hydrology, vol. , pp. Stets, E. G., V. J. Kelly, and C. G. Crawford (), Regional and Temporal Differences in Nitrate Trends Discerned from Long-Term Water Quality Monitoring Data, JAWRA Journal of the American Water Resources Association, vol. 51 (5), pp. File Size: 1MB. Over 70 per cent of the rivers of England and Wales are very good (target 1 or A) or good (target 2 or B) on a five-tier water quality scale. Most people’s first concern is usually sewage but with the new European Water Framework Directive in place all effluent now undergoes at least two treatments before entering a river and, increasingly, a. Alexander, R.B., and R.A. Smith, , Trends in the nutrient enrichment of U.S. rivers during the late 20th century and their relation to changes in probable stream trophic conditions, Limnology and Oceanography, 51, (L&O special issue on Eutrophication of . Water and air pollution have altered the course of the earth’s history. Along with amazing technological advances, the Industrial Revolution of the midth century introduced new sources of air.