Dry-weather flows discharging from storm drainage systems can contribute significant pollutant loadings to receiving waters. If these loadings are ignored, little improvement in receiving water conditions may occur. Illicit dry-weather flows originate from many sources. The most important sources typically include sanitary wastewater or industrial and commercial pollutant entries, failing septic tank systems, and vehicle maintenance activities.
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Marsh Creek Watershed Improvement Project
The Marsh Creek Headwaters BMP is a regional multi-use stormwater management facility designed to improve downstream conditions of the watershed. The project is part of a larger effort to improve overall watersheds that extend outside the limits of the City Center area.
The project is expected to reduce flooding in the surrounding neighborhoods and improve water quality by treating stormwater runoff before it flows into Marsh Creek, the tributary leading into the Chattahoochee River. The contributing watershed to the project location is 74% impervious surface.
Design of the facility will incorporate hardscape and softscape features creating an attractive greenspace. Project amenities will include walking trails and extensive landscaping, as well as educational signage to explain the stormwater treatment process. Water quality monitoring during pre- and post- construction will allow the Georgia Environmental Protection Division (EPD) to measure its effectiveness with hopes of replicating the successes in future stormwater treatment programs.
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Sandy Springs to Assess Floodplain, Redraws Maps
In the United States and in Georgia, flooding is the number one natural disaster. To identify flood hazards and the risks they pose, the Federal Emergency Management Agency (FEMA) develops flood hazard maps, officially known as Flood Insurance Rate Maps or FIRMS.
FEMA is now working with the State and the City of Sandy Springs to update or revise the FIRMS from Buford Dam to Coweta County, which includes the City of Sandy Springs. This will produce a better assessment of the Chattahoochee River Basin’s current flood risk and will allow officials to develop a more comprehensive approach to mitigate damage brought on by flooding.
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Learn more about stormwater and what you can do to help.
Why should you care about clean water?
Imagine no longer being able to fish, swim or wade through your favorite stream, river or lake. It might surprise you, but many waters in the metro Atlanta area are degraded due to polluted runoff after a rainfall.
Each time it rains, stormwater runoff (rainfall that does not soak into the ground) picks up debris such as litter, pesticides, chemicals, motor oil and dirt as it flows across rooftops and lawns, streets and parking lots. These pollutants are deposited, untreated, into our waterways. Increased runoff from developed areas can also cause flooding and erosion of stream banks, which results in even more pollutants entering our streams. Stormwater pollution can make monitoring and treatment of our drinking water more difficult and costly. In addition, it can harm our aquatic environment and ruin the beauty of our streams. If polluted stormwater contaminates our water sources, the result can be the closing of our rivers, lakes and streams to the public.
10 things you can do to “be a solution to water pollution”
Never dump anything on the street, down a storm drain or in a drainage ditch.
Scoop up after your pet. Bag the refuse and dispose of it in the trash.
Compost grass clippings and leaves or bag them for curbside collection. Do not blow them into the street.
Use fertilizers and pesticides sparingly. Do not apply them on paved areas.
Check your vehicles for leaks and repair them.
Reduce, reuse and recycle the amount of cleaning and maintenance chemicals used at home.
Recycle motor oil and other vehicle fluids.
Put litter in its place.
Wash cars at a commercial car wash or on a grassy area and not your driveway.
Tell a friend or neighbor about how to prevent stormwater pollution and get involved.
Did you know?
The quality of metro Atlanta’s streams, rivers and lakes are threatened by the daily activities of residents and businesses across the region. The leading threat to our water quality is stormwater pollution. Fifty-nine stream miles in the City (more than 1,000 in Metro Atlanta) are in violation of water quality standards due to stormwater pollution. The only way to combat the adverse effects of pollution is through knowledge and action.
Stormwater Watershed Improvement Studies
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