Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Earth Science News .




WATER WORLD
Notre Dame researcher is studying role small dams play in pollution control
by Staff Writers
Notre Dame IN (SPX) Apr 03, 2013


File image.

Sometimes, little things can add up to a lot. In short, that's the message of a research study on small dams, streams and pollution by Steve Powers, a postdoctoral researcher at the University of Notre Dame's Environmental Change Initiative (ECI).

"Small dams, reservoirs and ponds trap water pollution, which provides an important benefit to water resources," Powers said. "This is especially relevant in agricultural lands of the Midwest U.S., where there are lots of small, but aging dams."

Although small individually, the sum total of the small reservoirs and ponds have a global surface area comparable to that of all large reservoirs added together.

Powers and his fellow researchers showed in detail how a small aging dam, which was more than 100 years old and located in agricultural Wisconsin, trapped water pollutants associated with fertilizer and manure runoff. They also showed an increase in downstream transport of nutrient pollution after the dam was removed, which occurred because of concerns about the dam's safety.

"Many small dams are threatened by long-term structural decline and are also filling with sediment," Powers said. "If we don't better incorporate how small dams affect the movement of water and wastes through the environment, their benefit to downstream water quality could be lost. Meanwhile, legacy sediment and pollution currently trapped behind dams could release as dams lose their water storage capacity, fall apart, or are removed deliberately."

Powers notes that there is a crucial need to gain a better understanding of what small dams mean for our water quality before they crumble and disappear.

"I am continuing to work on the subject at a broader regional scale by looking at hundreds of stream and river monitoring stations throughout the Midwestern U.S. to detect signals of dams," he said. "One current goal is to try and figure out which regions are most vulnerable to water quality changes caused by accumulation of sediment and phosphorus behind dams."

The research paper appeared in the Journal of Geophysical Research-Biogeosciences.

Powers is conducting his research as part of the Notre Dame Environmental Change Initiative's Land Use Project. The Environmental Change Initiative conducts policy-oriented research designed to help policy-makers manage environmental changes.

.


Related Links
University of Notre Dame
Water News - Science, Technology and Politics






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





WATER WORLD
Brazil protesters occupy controversial Amazon dam
Rio De Janeiro (AFP) March 21, 2013
More than 150 fishermen and indigenous people on Thursday began occupying one of four construction sites for Brazil's huge Belo Monte dam in the Amazon, the lawyer for a group fighting the project said. Maira Irigaray, an attorney for the American non-governmental organization Amazon Watch said it was the most recent of several protests since June 2012. Native people and settlers say the ... read more


WATER WORLD
More Tibet landslide bodies recovered: media

Total of 54 Tibet landslide bodies recovered: state media

Shellfish gone near damaged nuke plant

Hopes fade in search for survivors of Tibet landslide

WATER WORLD
CO2 could produce valuable chemical cheaply

Catalyst in a teacup: New approach to chemical reduction

Lasers could yield particle research tool

Paint-on plastic electronics: Aligning polymers for high performance

WATER WORLD
Desert nomads marvel at water purifying device

Giant pockmarks found on Pacific seafloor

Rising up to prepare for sea level rise

Notre Dame researcher is studying role small dams play in pollution control

WATER WORLD
Recommendations for Streamlining Scientific Logistics in Antarctica

Arctic 'greening' seen through global warming

China plans more Antarctica research sites

Summer melt season is getting longer on the Antarctic Peninsula

WATER WORLD
Study looks at why chickens overeat

Researchers Find Novel Way Plants Pass Traits to Next Generation

China fertiliser leaves tons of harmful waste: report

Pesticide combination affects bees' ability to learn

WATER WORLD
US thanks Japan for help with tsunami debris

Strong quake kills one, injures 86 in Taiwan

Iceland sees unusual seismic activity at Hekla volcano

Huge and widespread volcanic eruptions triggered the end-Triassic extinction

WATER WORLD
Nigerian Easter day military raid leaves 15 dead

Obama to meet African leaders Thursday

S.Africa opposition wants troops out of Central Africa

S.African troops alarmed over killing child soldiers in C. Africa

WATER WORLD
Researchers successfully map fountain of youth

First evidence of Neanderthal/human mix

Urban vegetation deters crime in Philadelphia

Patents said threat to 'genomic liberty'




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement