The Potomac Conservancy has reported an improvement in the Potomac River’s health for the third year in a row, giving the waterway a “C” in its seventh annual State of the Nation’s River report.
The Potomac Conservancy, an advocacy group that fights for the health of the waterway, has an optimistic outlook for the river’s future. “After suffering the effects of historical overfishing, pollution and habitat destruction, it is no wonder that the Potomac River’s recovery is a slow one,” the report states. “We believe the river is on its way back to full health.”
In 2012, the Potomac topped American Rivers’ list of the nation’s most endangered waterways, the biggest threat a combination of agricultural and stormwater runoff. With continued population growth in the Washington, D.C., area, human development has increased the amount of impervious surfaces that cannot absorb polluted rainfall traveling across the land and into storm drains, rivers and streams.
“Going forward, when it comes to cleaning up the Potomac, public enemy number one is polluted runoff,” said Hedrick Belin, Potomac Conservancy president. “That is the single largest threat to the full recovery of the Potomac, in that it is the only source of pollution that we see growing.”
The Conservancy plans to take a “three-pronged” approach to reducing polluted runoff, strengthening regulatory frames at a local level, increasing funding for clean water programs and creating incentives and assistance programs for property owners to make it easier for them to contribute to a healthy waterway.
Belin stresses the importance of protecting both the river and the land that surrounds it. ”As we peek around the corner or over the horizon, we see some troubling trends if we don’t change how we treat the land that surrounds the Potomac,” he explained.
Garden beds filled with native plants, parking spots reserved for fuel-efficient vehicles and plant-covered roofs that trap rainfall before it runs into storm drains: these simple steps to “go green” have turned a Southern Maryland community college into a model of conservation.
Located less than five miles from the Patuxent River, the College of Southern Maryland’s (CSM) Prince Frederick campus has become home to a green building that shows students and citizens alike the benefits of green infrastructure.
Indeed, green building has become the norm for new facilities in a state that has long championed smart growth and all that it entails, from funding development inside of existing communities to protecting rural areas from suburban sprawl. Maryland legislation passed in 2008 even requires building projects of a certain size to be certified as green, whether it is through the Leadership in Energy and Environmental Design (LEED) Green Building Certification program or the Green Globes system. At 30,000 square feet, the academic building in Prince Frederick fit the bill of needing to be green.
“[Earning green certification] was a mandate from the state,” said Richard Fleming, CSM vice president and dean of the Prince Frederick campus. “It’s a laborious process, but it has also been exciting, because I had never worked with [a green building] before.”
Fleming has worked with community colleges for 35 years, and was until 2009 the vice president for academic affairs at Thomas Nelson Community College in Hampton, Va. The chance to construct a new building on the fastest-growing campus in the CSM network attracted him to this new position at his sixth college in as many states.
Opened in September and funded in part by the state, the Prince Frederick building is the second LEED-certified building in Calvert County. According to the U.S. Green Building Council, which operates the LEED certification program, green buildings can lower energy use and operational costs; reduce waste and carbon emissions; and provide healthy indoor spaces for building occupants. These are all benefits that Fleming hopes to see.
“The goal behind LEED is to one, reduce water consumption, and two, reduce energy consumption,” Fleming said. “We should, after a period of time… start to see some kind of gas savings, electrical savings, energy savings.”
To earn LEED certification, building projects collect points based on different aspects of their construction. The higher their final score, the higher the certification level earned. Fleming hopes that the Prince Frederick building will reach gold status, and gave us a tour of some of the items on its green building checklist: large windows that flood the space with natural light; green roofs that capture rainfall; bike racks that encourage public transportation; bio-retention cells that collect stormwater from sidewalks and parking lots; and native, drought-tolerant plants—like black-eyed Susans, American beautyberry and Joe-Pye weed—that fill up garden beds.
Students and faculty “are all very pleased with [the new building],” Fleming said. But it is not just the campus that will benefit.
“This is a building that’s open to the public,” said Dorothy Hill, lead media relations coordinator for CSM. The campus has hosted film festivals and concert series, and the new building’s 3,000-square-foot meeting space has been called the best in Calvert County.
“At the dedication, people were very interested in learning what LEED certification was all about,” Hill said. “The community comes here, and will be able to see… that we’re stewards of the environment, and we care about the community.”
Photos by Jenna Valente.
The oldest body of seawater ever identified is buried under the Chesapeake Bay.
According to the U.S. Geological Survey (USGS), this recently discovered body of water dates back to the Early Cretaceous period, when wet and dry seasons controlled the climate, tropical jungles dominated the landscape and dinosaurs were becoming more plentiful.
Image courtesy Nicolle Rager-Fuller/National Science Foundation
The water is buried beneath a large meteorite that struck the earth 35 million years ago, throwing debris into the atmosphere and spawning a train of tsunamis that probably reached as far as the Blue Ridge Mountains. The so-called “Chesapeake Bay impact crater” is the largest crater discovered in the United States and helped determine the current shape of the Bay.
Because the water is trapped in place, USGS scientists have been able to estimate its age—100 to 145 million years old—and its salinity—twice as salty as modern seawater.
Acting USGS Associate Director for Water Jerad Bales said in a media release that before this discovery was made, no one realized that the saltier-than-normal groundwater found deep in the Atlantic Coastal Plain “was North Atlantic ocean water that has essentially been in place for 100 million years.”
“We are working directly with seawater that dates far back in earth’s history,” Bales said.
Slow-moving groundwater on the Delmarva Peninsula could push excess nutrients into the Chesapeake Bay even after we have lowered the amount of nitrogen and phosphorous we put onto the land.
Image courtesy yorgak/Flickr
According to new research from the U.S. Geological Survey (USGS), most of Delmarva is affected by the slow movement of nutrients from the land into the water. A USGS model developed to track the movement of nitrogen through the region showed that groundwater—and the pollutants it can contain—takes an average of 20 to 40 years to flow through the peninsula’s porous aquifers into rivers and streams. In some parts of Delmarva, the groundwater that is now flowing into local waterways contains nitrogen linked to fertilizer used three decades ago.
The slow flow of nitrogen-laden groundwater into the Bay could affect efforts to restore the watershed, lengthening the “lag-time” between the adoption of a conservation practice and the effect of that practice on a particular waterway. In other words, it could take days or even decades for today's management actions to produce positive water quality results.
“This new understanding of how groundwater affects water-quality restoration in the Chesapeake Bay will help sharpen our focus as many agencies, organizations and individuals work together to improve conditions for fish and wildlife,” said Lori Caramanian, Department of the Interior Deputy Assistant Secretary for Water and Science, in a media release.
While these findings seem to contradict the value of our restoration work, the study in fact indicates that pollution-reducing practices put in place over the past decade have begun to work. The study also confirms that rigorous steps taken to reduce nutrients on the land will lower the amount of nitrogen loading into streams in the future.