Exeter’s Great Dam Removal :: NOAA Fisheries

https://www.greateratlantic.fisheries.noaa.gov/stories/2016/september/08_exeter_s_great_dam_removal.html

Good news for boaters! And everyone!

Friday, September 9, the town of Exeter, New Hampshire celebrates the removal of the Great Dam and the restoration of the Exeter River. The town will hold a public ceremony in Founders Park at 10am.

There have been dams along the Exeter River since the 1640s or so. The Great Dam, named for the nearby Great Falls, was built around 1831 to provide power to Exeter’s mills. After coal and oil power came to Exeter, the Great Dam continued to provide power to Exeter businesses into the mid-20th century. When the dam’s owner sold the dam and factories in 1981, the Great Dam was donated to the Town of Exeter.

With the need for the dam gone, the Great Dam fell into disrepair. In 2000, the New Hampshire Department of Environmental Services advised the town that the dam had serious safety and flooding issues. The Town considered repairing, modifying, or removing the dam, and finally decided that removing the dam was the best solution.

Great Dam Removal Project SignView slideshowExeter’s Great Dam Removal Project

Opening 21 Miles of River “

Dams produce more greenhouse gas emissions than we thought — Quartz

http://qz.com/797380/reservoirs-methane-emissions-climate-change/

Katherine Ellen Foley on the problem with “clean” hydropower. “Globally, the reservoirs created by dams may actually contribute almost a gigaton of carbon dioxide-equivalent emissions—about 25% more than they had previously thought. This means that we’ve almost certainly been underestimating how much greenhouse gas we’ve been shooting into the atmosphere.”

Another reason to let rivers run their natural course….too late to stop China’s 3 River Dam on Yangtze.

Great Lakes water quality issues to be focus of public forum – News – Voice News

http://www.voicenews.com/articles/2016/09/09/news/doc57d2f5619eab5141364661.txt

Weigh in on environmental issues on Oct 4, in Toronto Canada. If you are a citizen of the US or Canada you are invited to participate. Go to IJC.ORG to find out more. So your part to protect the Great Lakes.

Rediscovering Native American roots at pipeline protest – BBC News

http://www.bbc.com/news/magazine-37171280

Since April, over 3000 Native American people have been camping in Cannon Ball, North Dakota. They are trying to stop the construction of the Dakota Access Pipeline, which would run underneath the Missouri river near the Cheyenne river reservation.”

Video by Anna Bressanin

The Southern Ocean is getting less salty. Here’s what that could mean for the rest of the world – The Washington Post

https://www.washingtonpost.com/news/energy-environment/wp/2016/08/31/how-sea-ice-is-making-the-southern-ocean-less-salty-and-what-that-might-mean-for-the-rest-of-the-world/?utm_term=.508241e0b68d

Saltinity important to ocean processes: 

These processes are important drivers of ocean currents all over the world. The salty water created by sea ice formation is denser than fresh water, so it has a tendency to sink to the bottom of the ocean. In doing so, it helps push the water below it forward along the sea floor, creating a current that runs north toward the equator. As the water warms up, it rises to the surface and eventually runs back toward the poles. This process helps carry heat and nutrients around the world.”

Read on

Lake Ontario water colours: What the lake’s hue can tell you — Lake Ontario Waterkeeper

http://www.waterkeeper.ca/blog/2016/9/2/lake-ontario-water-colours-what-the-lakes-hue-can-tell-you

Blue is water’s signature colour. When light shines on a body of water all the wavelengths of light in the light spectrum are absorbed with the exception of the blues, indigos, and violets. Sometimes green light doesn’t get absorbed either. These unabsorbed colours are what we see. Clouds, sunshine, and shadows do beautiful things to the colour of water, making it appear in different shades of blues, purples, blacks, greys, and greens.”

Gabrielle Parent-Doliner

Read on….fascinating

Greenland Inuit oppose open-pit uranium mine on Arctic mountain-top – The Ecologist

http://www.theecologist.org/News/news_analysis/2988016/greenland_inuit_oppose_openpit_uranium_mine_on_arctic_mountaintop.html

“Recently I [Bill Williams] was invited to assess an old Danish uranium exploration site in Kvanefjeld in southern Greenland.”

Inuit Ataqatigiit – the opposition party in the national parliament – had asked me to talk to local people about the health implications of re-opening the defunct mine.

An Australian firm called Greenland Minerals and Energy (GME) has big plans to extract uranium and rare earth minerals here. It would be a world first: an open-pit uranium mine on an Arctic mountain-top.

Any questions?

Oregon train derailment spills oil, sparks fire

https://www.yahoo.com/news/oregon-train-derailment-spills-oil-sparks-fire-204604432.html

Oil spills are preventable. Read excerpt:
“Including Friday’s accident, at least 26 oil trains have been involved in major fires or derailments during the past decade in the U.S. and Canada, according to Associated Press analysis of accident records from the two countries.

The worst was a 2013 derailment that killed 47 people in Lac-Megantic, Quebec. Damage from that accident has been estimated at $1.2 billion or higher.”

USGS Release: Protecting Water in the Red River: There’s a Map for That (3/14/2016 5:50:23 PM)

http://www.usgs.gov/newsroom/article.asp?ID=4472#.VujiACMpDqB

Introduction of a new tool to help managers make critical water decisions concerning the Red river Basin between to USA and Canada. Read on:

“Understanding the facts makes it easier to achieve cooperative solutions to complex problems such as managing nutrient pollution,” said IJC U.S. Section Chair Lana Pollack. “A geographic display of information can be a powerful aid to understanding the facts.”