Navigation Links
Increased sediment and nutrients delivered to bay as Susquehanna reservoirs near sediment capacity
Date:8/30/2012

ehanna River delivered about 2 percent of total water to the Bay for the last decade; however, it delivered 5 percent of the nitrogen, 22 percent of the phosphorus, and 39 percent of the suspended sediment.

According to the report, from 1996-2011 total phosphorus moving into the Bay has increased by 55 percent, and suspended sediment has increased by 97 percent. Over this time period, total nitrogen decreased by about 3 percent overall, but showed increases during large events.

These results represent the combined effects of the changes in sediment within the reservoirs, as well as changes in the sources of these constituents upstream. Another recent USGS study reported about a 25 percent reduction in nutrients and sediment concentrations just upstream of the reservoirs, reflecting the benefit of actions to improve water quality in the upper portion of the Susquehanna River watershed.

"Progress on reducing loadings of these pollutants from the Susquehanna River Basin depends on efforts made to limit the loadings in the watershed, as well as the effects of the downstream reservoirs," said Hirsch. "In general, the changes we have observed in the reservoirs and the resulting greater impact of storms are already overshadowing the ongoing progress being made in the watershed to reduce the amount of nutrients and sediments entering the Bay."

Sediment and nutrient loadings from the Susquehanna River are crucial to understanding the status and progress of water quality in the Chesapeake Bay. On average, the Susquehanna River contributes nearly 41 percent of the nitrogen, 25 percent of the phosphorus, and 27 percent of the sediment load to the Bay.

"The findings of this USGS study increase the urgency of identifying and implementing effective management options for addressing the filling reservoirs," said Bruce Michael, director, Resource Assessment Service for the Maryland Department of Natural Resources. "The Lower Susquehan
'/>"/>

Contact: Kara Capelli
kcapelli@usgs.gov
571-420-9408
United States Geological Survey
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Specific toxic byproduct of heat-processed food may lead to increased body weight and diabetes
2. New research finds increased growth responsible for color changes in coral reefs
3. NIH-led study finds genetic test results do not trigger increased use of health services
4. Increased fructose consumption may deplete cellular energy in patients with obesity and diabetes
5. Coral reef thriving in sediment-laden waters
6. Oceanographers develop method for measuring the pace of life in deep sediments
7. Study: No-fat, low-fat dressings dont get most nutrients out of salads
8. Obtaining key nutrients from canned foods can save consumers money
9. Consumers need simple, concise messages about benefits of phytonutrients
10. Research on flavanols and procyanidins provides new insights into how these phytonutrients may positively impact human health
11. Sandy beaches, hydrocarbon reservoirs, tectonic tilting: Its all about geology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/16/2014)... October 16, 2014 NXT-ID, Inc. (NASDAQ: ... a biometric authentication company focused on the growing mobile ... technologies including Wocket™, the Smart Wallet, at the 13 ... is a leading global conference on the intersection of ... Mark Anderson , founder and publisher of the ...
(Date:10/15/2014)... from strains of influenza virus increases with the latest ... complacent that the most substantial threats have been identified, ... arise when a new virus strain – against which ... in the human population. There have been five such ... which – the 1918 Spanish Flu – cost 50 ...
(Date:10/15/2014)... The German Gauß-Allianz has admitted Johannes Gutenberg University ... the Rhineland-Palatinate science hub continues to maintain a ... computing. , "The acceptance of Johannes Gutenberg ... Gauß-Allianz is a milestone in the national and ... support. The state of Rhineland-Palatinate can be proud ...
Breaking Biology News(10 mins):NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3
... This release is also available in Chinese ... (September 28, 2010) -- The second law of thermodynamics is ... its implicit existential crunch. The tendency of a closed systems ... removed is a popular, if not depressing, "things fall apart" ...
... MT. ROYAL, NJ (September 28, 2010) "Migraine feels ... face," says author Andrew Levy in his interview on the ... of Our Heads". "It,s a metaphysical crisis." In the ... his personal experience with managing the pain of migraine, how ...
... (Sept. 28, 2010) -- A new book, RNA ... reviews our understanding of two RNA worlds: the primordial RNA ... and biocatalyst; and the contemporary RNA world, in which mRNA, ... operate. "[T]he plasticity of RNA stemming from ...
Cached Biology News:Tiny generators turn waste heat into power 2American Migraine Foundation launches new podcast series 2New book reviews ancient and modern worlds of RNA 2
(Date:10/20/2014)... -- GenVec, Inc. (NASDAQ: GNVC ) today announced the ... board of directors effective on October 24, 2014.   Dr. Horovitz ... its chairman from June 2006 to November 2013.  During his ... and Audit Committees of the board.  "We ... service to GenVec, and its stockholders," said Wayne T. ...
(Date:10/20/2014)... (PRWEB) October 20, 2014 ... Partners LLC, announced today that Ellen Teplitzky, an ... support for the pharmaceutical industry, has joined the ... of its legal services practice. NDA Partners ... expert witness and testimony, to top law firms ...
(Date:10/19/2014)... 2014 OCTOBER 20-22, 2014: ... ABIM will take place at the ... ABIM 2014 is now available at ... companies and organizations from all over the ... on the latest products and developments on ...
(Date:10/19/2014)... October 19, 2014 The Asian Automatic ... Asian with analysis and forecast of revenue. The Automatic ... to around $463.9 million by 2018, at a developing ... through the TOC of the Asian Automatic patient billing ... provided. This also provides a glimpse of the segmentation ...
Breaking Biology Technology:Zola P. Horovitz To Retire From GenVec Board 2NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3
... Pharmos Corporation,(Nasdaq: PARS ) announced today that ... from the Company., Mr. Rubino joined Pharmos ... acquisition and the subsequent integration of Vela,Pharmaceuticals completed ... has been focused on key business development priorities ...
... Synthetech, Inc. (OTC,Bulletin Board: NZYM) has earned ... outstanding accomplishments in environmental, health,safety and security ... by,the Synthetic Organic Chemical Manufacturers Association (SOCMA) ... awards are highly,regarded and demonstrate Synthetech,s level ...
... Dec. 18 January 1, 2008 will mark the,ritualistic day ... The New,Year also brings added pressure to smokers as January ... For those resolving to make 2008 the start of a ... Laser Therapy,provided by Achieve Laser, is quickly becoming a very ...
Cached Biology Technology:Pharmos Corporation Announces President & COO Alan L. Rubino to Leave Company 2Synthetech Earns National Recognition for Performance Improvement Program 2Synthetech Earns National Recognition for Performance Improvement Program 3Laser Therapy Gives Smokers Hope for Successful New Year's Resolution 2
... SYBR Safe DNA gel stain was developed ... than ethidium bromide for staining DNA in agarose ... only less mutagenic than ethidium bromide but SYBR ... of ethidium bromide. SYBR Safe stain comes as ...
... Service enables scientists who do not have access ... to have their biological samples tested for the ... easy as 1-2-3 Chose the analytes ... from the S&S antibody menu. Send your ...
... I nucleic acid gel stain is an ... bright fluorescence when bound to dsDNA and low ... dsDNA in gels using laser scanners or standard ... has also found uses in capillary electrophoresis, real-time ...
... stain has bright fluorescence when bound to dsDNA ... for detecting dsDNA in gels using laser scanners ... nucleic gel acid stain has also found ... bandshift assays. One mL stains 100 minigels. A ...
Biology Products: