Assessment of the 1978 water quality conditions in the upper Potomac estuary
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Assessment of the 1978 water quality conditions in the upper Potomac estuary

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Published by U.S. Environmental Protection Agency, Region III, Central Regional Laboratory in Annapolis, Md .
Written in English

Subjects:

  • Water quality management -- Potomac River estuary -- Mathematical models,
  • Water -- Dissolved oxygen -- Mathematical models,
  • Sewage disposal in rivers, lakes, etc. -- Potomac River estuary

Book details:

Edition Notes

StatementLeo J. Clark, Stephen E. Roesch and Molly M. Bray
ContributionsRoesch, Stephen E, Bray, Molly M, United States. Environmental Protection Agency. Region III. Central Regional Laboratory
The Physical Object
Paginationix, 91 p. :
Number of Pages91
ID Numbers
Open LibraryOL14889702M

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4 WATER QUALITY OF THE POTOMAC RIVER ESTUARY AT WASHINGTON, D.C. of 3, ppm (equivalent to about 20 percent sea water) was observed at Indian Head. A chloride concentration of 68 ppm-several i:imes the probable normal value-was ob­ served at Fort Washington during low flow in September 3. Although this concentra­Author: W.H. Durum, Walter Basil Langbein. TFPR (Fig. 1) occupies the upper 60km of the Potomac River estuary, which is a major sub-estuary of the Chesapeake Bay, USA. The upper and downstream boundaries of the tidal fresh portion are determined by the head of tide and by the transition from fresh to salt water (>1ppt salinity). Although the system is. in the tidal Potomac River and Estuary. 21 8. Upper limit of salinity at which individual species in the tidal Potomac River and Estuary were sampled, 22 9. Secchi-disk water-transparency measurements in major salinity zones of the tidal Potomac River and Estuary, 23 Cited by: Clark, L.J., and S.E. Roesch. Assessment of water quality conditions in the Upper Potomac estuary. U.S. Environmental Protection Agency, Annapolis Field Office, Region III. Google Scholar. 7. Clark L.J., et al. A water quality modelling study of the Delaware estuary. Jaworski N.A. () Sources of Nutrients and the Scale Cited by:

The natural aging process of Chesapeake Bay and its tributary estuaries has been accelerated by human activities around the shoreline and within the watershed, increasing sediment and nutrient loads delivered to the bay. Riverine nutrients cause algal growth in the bay leading to reductions in light penetration with consequent declines in sea grass growth, smothering of bottom-dwelling. Abstract. Extensive measurements were carried out during the summers of and to define concentrations of inorganic nitrogen, O 2 and N 2 O in the Potomac River. The chemistry of the river varied significantly between and , with nitrification rates slower near the city of Washington D.C. by more than a factor of 10 in Cited by: Chapter Nine: A Summary of How and Why the Water Quality of the Potomac River and its Estuary Has Changed During the Past Years Bacteriological Conditions in the Potomac River and Upper Estuary (in Chapters Two and Six) In the late s ands, . Potomac River Estuary in the Washington Metropolitan Area: A History of Its Water Quality Problems and Their Solution [U. S. Environmental Protection Agency] on *FREE* shipping on qualifying offers. Potomac River Estuary in the Washington Metropolitan Area: A History of Its Water Quality Problems and Their Solution.

Assessment of water quality conditions in the upper Potomac estuary / (Annapolis, Water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin: Teamwork on the Potomac; the story of water pollution control. (Washington. Blooms of cyanobacteria have appeared on the Potomac River near Washington, DC in years of drought and low river volume. The location of the bloom may be related to tidal activity. Water Quality Monitoring The State of Louisiana conducted six water quality surveys at 31 stations during the following periods: • July • October • July • August • July • June At each station the following ten constituents were measured and simulated in the model: 1) Water temperature 6) Nitrites 2. The estuary water quality was characteristic of water receiving wastewater effluent — high nitrite/nitratp, phosphorus, and BOD, and low dissolved oxygen, in the upper half of the estuary (below the saltwater barrier) dissolved oxygen was below the State's mg/l standard.