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A recent study by the U.S. Geological Survey found elevated levels of nitrogen and phosphorus in many streams and groundwater supplies across the country. Elevated levels were most often found in streams near agricultural areas, particularly in the Northeast, Midwest and Northwest, as well as near urban areas. In many cases, concentrations of nitrogen and [...]

Did you know that poor quality soil increases the amount of water needed to irrigate lawns and gardens? Soil improvements, such as adding compost or other similar soil amendments, can reduce your irrigation needs by 20 percent. That’s a reduction of more than 16,000 gallons annually per household in states where irrigation is prevalent, or [...]

Wind plays a major role in bird migration. In the fall, wind circulation patterns around highs and lows impact the movement of migratory birds. The ideal time for flying often occurs the day after a cold front passes – north winds, dropping temperatures, rising air pressure and clearing skies are good migration conditions. Soaring birds like [...]

If you’ve been to the beach, chances are good you’ve been on a barrier island. Barrier islands are among the United States’ most important coastal features. Running more than 3,500 miles along the Atlantic and Gulf Coasts, these islands are invaluable buffers, protecting vulnerable shores and inland areas from violent storms and waves. They also [...]

We often think of fall as a time of diminishing resources. Days get shorter. Storms roll through, bringing rain and strong northwest winds. Temperatures fall. But for animals in and around the Chesapeake, autumn is often a time of plenty. In the Bay, rain, wind and falling temperatures add oxygen to the water.  Cooling makes [...]

Have you found ladybugs in your home this fall? As temperatures drop, the Asian ladybug, Harmonia axyridis becomes an unwelcome houseguest in many homes. Asian ladybugs invade homes at this time of year searching for protected sites to overwinter. The Asian ladybug is relatively new to the United States – in their native home, Asian ladybugs [...]

World Water Monitoring Day (WWMD) – an international education and outreach program to involve the public in monitoring and protecting water resources – takes place on September 18 each year. WWMD volunteers use a simple test kit to measure key water quality indicators in local water bodies, including temperature, acidity (pH), clarity (turbidity) and dissolved [...]

Mute swans (Cygnus olor) were introduced to North America from Eurasia during the late 1800s and have since increased to over 14,000 birds in the Atlantic Flyway.   Unlike the native tundra swan (Cygnus columbianus), mute swans inhabit the Chesapeake Bay year round.   Grazing by the swans on the underwater grasses during their growing season negatively [...]

About 16 species of submerged aquatic vegetation (SAV) inhabit the Chesapeake Bay and its tributaries.  Salinity is the determining factor in the distribution of these species throughout the bay.  SAV provide numerous benefits to the ecosystem.  The presence of an SAV bed slows down wave energy allowing suspended sediment to be trapped within an SAV [...]

Water conservation puts less strain on our drinking water supplies, while also reducing wastewater discharges that pollute streams, rivers and the Chesapeake Bay.  Conserving water puts less strain on a community during drought and dry weather. Viewer Tip: Divert water from roof and air conditioning runoff directly into planters or rain barrels for use in [...]

A large adult oyster can filter up to two gallons of water an hour.  Scientists speculate that the oyster population prior to the mid-19th century decline could filter the entire volume of water in the Chesapeake Bay in under a week!  At the present severely depleted population, this task has increased to about a year. [...]

As part of the National Lakes Assessment, the U.S. EPA selected and sampled 116 lakes in the Coastal Plains Region (covering the Mississippi Delta, north along the Ohio River, Florida, eastern Texas and the Atlantic Seaboard to New Jersey) to characterize the condition of more than 7,000 lakes throughout the area. What did researchers find? [...]

Did you know that almost 60 percent of Americans live an area with unhealthy levels of air pollution? Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat [...]

Have you ever wanted to help keep your community by reporting severe weather?  SKYWARN is a volunteer network of nearly 290,000 trained severe weather spotters around the country.  SKYWARN spotters help keep their local communities safe by providing timely and accurate information to the National Weather Service about weather events like thunderstorms, winter weather and [...]

Do you rent your home or apartment? You’re not alone – about 33 percent of U.S. residents were renters between 2006 and 2008. Taking energy-saving steps can seem challenging when you don’t own your home and cannot make major changes to your living space. But, did you know that there are easy ways to save [...]

During the 2009 beach swimming season, more than 3,800 beaches were monitored for possible swimming risks – 43 percent of those beaches had at least one swimming advisory or closure. Beach advisories and closures often follow heavy rainfall, when sewer overflows may occur and rain water can wash trash and other pollutants into swimming areas. [...]

Mowing the lawn is a typical summer activity. Did you know that when you mow, you can actually “stress out” your grass? This can lead to a brown, weedy and patchy lawn. But, by increasing your mower height, you can reduce stress on turf species as well as the incidence of some common turf weeds. [...]

May is National Bike Month and May 17-21, 2010 is Bike to Work Week.  The U.S. Department of Transportation estimates that there is one adult-sized bicycle per U.S. household, but few adults report taking a bike trip outdoors.  Taking your two-wheeler for a spin not only helps keep you healthy, it also saves money, reduces [...]

Earth Gauge Video is available for this tip. Are you going fishing this season? Many people head to local lakes and streams during nice weather.  A new, four-year, multi-agency study shows a nearly 50 percent chance that the fish you catch will contain mercury. Some levels are so high that pregnant women and children should [...]

Residential driveways can account for up to 15 percent of the total paved area in a city or state. These paved surfaces are “hot spots” for accumulation of pollutants like motor oil, antifreeze and yard care chemicals. During a storm, rain water picks up pollutants from paved areas and heads to the storm drain, which [...]