The Freshwater Society blog publishes a digest of important regional, national and international articles and research on water and the environment. Scan the articles here, then follow the links to read the articles in their entirety where they originally were published.
Precision conservation talks archived
Did you miss the March 29 Freshwater Society conference on precision conservation? If you did, you missed some really exciting presentations on some of the most exciting strategies for targeting conservation and pollution-prevention practices to the places on the land where they will do the most good. But all the presentations are archived on video on the Freshwater website.Here’s the link to the lead presentation by University of Minnesota Professor David Mulla.
Report: States fail to plan for climate challenges to water
Only nine states have taken comprehensive steps to address their vulnerabilities to the water-related impacts of climate change, while 29 states are unprepared for growing water threats to their economies and public health, according to a first ever detailed state-by-state analysis of water readiness released by the Natural Resources Defense Council. The report ranks all 50 states on their climate preparedness planning, and is accompanied by an interactive online map at showing the threats every state faces from climate change.
The new NRDC report, “Ready or Not: An Evaluation of State Climate and Water Preparedness Planning,” outlines four preparedness categories to differentiate between the nine best-prepared and most engaged states with comprehensive adaptation plans (including California, Maryland, New York, Pennsylvania, and Wisconsin), from those states that are least prepared and lagging farthest behind (including Florida, New Mexico, Ohio, Virginia, and Texas).
“Rising temperatures and more extreme weather events are impacting our families, our health and our pocketbooks. Water is a matter of survival. It powers our lives and industries, and it keeps our natural systems healthy,” said NRDC Water & Climate Program director Steve Fleischli. “This report is both a wake-up call and a roadmap for all communities to understand how vital it is to prepare for climate change so we can effectively safeguard our most valuable resources. Preparing for the impacts of a changing climate requires that states confront reality, and prioritize climate change adaptation to reduce local water risks and create healthier communities.”
Read what the report had to say about Minnesota.
–Natural Resources Defense Council news release
Research: U.S. rivers lower in sediment
Almost all the sediment-associated chemical concentrations found in 131 of the nation’s rivers that drain to the Atlantic, Pacific and Gulf Coasts are lower than worldwide averages, according to a new study by the USGS. These coastal rivers are a significant pathway for the delivery of sediment-associated chemicals to the world’s coastal zones and oceans.
“I hope that the results of this new study will remind everyone that it is not only river water that can transport chemicals and pollutants, but also the associated sediment load,” said USGS Director Marcia McNutt. “Our citizens expect high environmental quality as compared with worldwide averages, but clean water alone will not suffice if river sediments are host to toxic heavy metals and concentrated organics that can produce dead zones.”
Though overall levels are better than worldwide averages, about half the rivers draining to the Atlantic Ocean have elevated concentrations of nutrients and trace and major elements in their sediment. About a quarter of the rivers draining to the Pacific Ocean and the Gulf of Mexico also have elevated levels.
–USGS News Release
144 Asian carp netted in two Iowa lakes
A commercial fishing company caught 55 silver carp and 82 big head carp on March 28 and 29, fishing in the same general area of East Okoboji Lake where two big head carp were netted by the Iowa DNR last August during a population survey.
On April 3, one silver carp was caught by the same commercial angler in Spirit Lake. A second netting effort on April 4 in the same East Okoboji Lake location resulted in only two bighead carp and two silver carp.
Mike Hawkins, fisheries biologist with the Iowa Department of Natural Resources, said the invasive fish had a small window last summer in which to enter the Iowa Great Lakes. Flood events in June and July allowed the fish to navigate the Little Sioux River past the Linn Grove Dam, landing at the doorstep of the Iowa Great Lakes.
Once below the Iowa Great Lakes, heavy rain events in July caused flooding conditions on the lakes that allowed these fish to enter Lower Gar Lake, which is the final lake in the chain of six glacial lakes in Dickinson County.
“While it confirms the presence of both species, this commercial seine haul does not tell us how many Asian carp are in the lakes. Nor does it get us any closer to knowing at what level these fish will be a problem,” Hawkins said.
–Iowa DNR News Release
Federal ballast water rules target invasives
Nearly a quarter-century has passed since an oceangoing ship from Europe docked somewhere in the Great Lakes and discharged ballast water carrying tiny but tenacious zebra mussel larvae from Europe.
Within a few years after they turned up in Lake St. Clair, between Lakes Huron and Erie, the small freshwater mussels and their larger and even more destructive cousins, quagga mussels, had coated lakebeds throughout the region, clogging intake valves and pipes at power, water treatment and manufacturing plants.
The filter-feeding mussels have since helped to upend the ecosystems of the Great Lakes, fouling beaches, promoting the growth of poisonous algae and decimating some native fish populations by eating the microscopic free-floating plant cells on which their food web depends.
–The New York Times
Spawning steelhead get lift from DNR
In an unprecedented move because of low water levels, Minnesota Department of Natural Resources fisheries officials began transporting steelhead from the Knife River fish trap upstream past the Second Falls on the Knife River to assist the fish on their spawning migrations.
The fish are being transported about 5½ miles in tanks on trucks.
“We were urged strongly to do this by the Lake Superior Steelhead Association,” said Don Schreiner, DNR Lake Superior area fisheries supervisor at French River. The steelhead association advocates for steelhead, or rainbow trout, that live in Lake Superior and migrate up North Shore streams each spring to spawn.
With low water flows this year, it’s more difficult for fish to clear the falls as they move upstream. The DNR would continue to move steelhead only if flows remain low, Schreiner said.
–The Duluth News Tribune
World food demand strains energy, water
The northern region of Gujarat State in western India is semi-arid and prone to droughts, receiving almost all of its rain during the monsoon season between June and September.
But for the past three decades, many crop and dairy farms have remained green—even during the dry season.
That’s because farmers have invested in wells and pumps, using massive amounts of electricity to extract water from deep aquifers. The government has artificially propped up the agricultural sector through power subsidies and price supports.
The pumping hasn’t occurred without dire environmental impacts. Groundwater tables have fallen precipitously, 600 feet below the ground in some places, requiring even more powerful pumps to bring water to the surface. Over-consumption has taxed the power grid, constraining the electricity available for others.
Navajo, Hopi may face choice on water rights
Arizona’s two senators, John McCain and Jon Kyl, traveled to the Navajo reservation meet with Navajo and Hopi tribal leaders about a proposed water rights accord that would settle the two tribes’ claims to the Little Colorado River system.
Mr. Kyl and Mr. McCain have introduced a bill known as the Navajo-Hopi Little Colorado River Water Rights Settlement, which would require the tribes to waive their water rights for “time immemorial” in exchange for groundwater delivery projects to three remote communities.
The tribes must sign off on the settlement, along with 30 other entities including Congress and the president, before the bill becomes law.
–The New York Times
Minnesota, Mississippi TMDL comment extended
The Minnesota Pollution Control Agency has extended the public comment periods for reports about water quality in the Mississippi and Minnesota rivers. Due to a high level of interest, the public comment period has been extended to May 29, 2012, for the Total Maximum Daily Load (TMDL) draft reports about Minnesota River turbidity and South Metro Mississippi River total suspended solids.
The comment period for the reports began Feb. 27 with a notice in the State Register.
The TMDL reports focus on turbid water caused primarily by sediment. Turbidity is caused by suspended and dissolved matter, such as clay, silt, organic matter, and algae. High turbidity results in poor water quality for aquatic habitat, recreation, industrial use, and human consumption.
The two documents are available for public review and comment on the MPCA’s TMDL Projects and Staff Contacts webpage.
–MPCA News Release
$5.2 million slated for water protection
Reducing phosphorus in lakes, protecting water resources, and addressing failing septic systems are among the projects funded by $5.2 million in financial aid recently approved by the Minnesota Pollution Control Agency. As funded by the Clean Water Partnership (CWP) program, 10 agency partners across Minnesota will receive grants and/or loans to investigate pollutants in lakes and rivers and take action to protect waters from those pollutants. View the projects.
–MPCA News Release
Invasive species decal required for boaters
A new required decal is now available for Minnesota boaters to help remind them of the state’s aquatic invasive species laws, the Minnesota Department of Natural Resources announced.
The free decals are available at:
- DNR offices.
- Deputy registrar offices where licenses are sold.
- Large sporting goods shops.
- DNR watercraft inspectors and conservation officers.
The decals will also be included in envelopes with new and renewal watercraft licenses mailed from the DNR. The decal should be attached to all types of watercraft including canoes, kayaks and duckboats before launching on, entering into, or operating on any Minnesota waters.
The two-piece, gray-and-black decals detail new state laws that watercraft users must follow in order to avoid spreading aquatic invasive species such as zebra mussels, Eurasian watermilfoil and spiny waterfleas.
–DNR News Release
Maryland eyes banning arsenic in chicken feed
The state Senate signed off on a bill to ban chicken feed containing arsenic, bringing Maryland a step closer to being the first state to prohibit the additive.
The chamber approved a version of the measure 32-14, sending it back to the House of Delegates for final authorization.
The bill bans the use of roxarsone, a chemical used to help the birds grow and fight parasites. Supporters of the legislation say the arsenic additive contaminates chicken meat and waste, polluting soil and the Chesapeake Bay.
But opponents say the legislation isn’t necessary because Pfizer Inc., the company that makes roxarsone, voluntarily suspended the sale of the chemical.
–The Associated Press