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Information Compiled by Ms. Haren on the Chattahoochee River Basin

FROM: http://www.garivers.org/pdf_files/river_basin_facts/chattahoochee.pdf

 FROM: http://www.rivercenter.uga.edu/education/k12resources/basinsofga2.htm

 



 

education: resources for k-12 teachers and students
river basins of georgia

CHATTAHOOCHEE-FLINT RIVER BASIN
by Gretchen Loeffler and Judy L. Meyer

The Chattahoochee River, whose name is derived from Creek Indian words meaning painted rock, drains an area of 8,770 sq mi and is the most heavily used water resource in Georgia. Its headwaters begin at the southern edge of the Blue Ridge Mountains at an altitude above 3,000 feet and flow 430 miles to its confluence with the Flint River. The Chattahoochee River provides drinking water for more than half of all Georgians and recreation for more than 25 million people each year. The Chattahoochee and Flint Rivers are part of a larger Apalachicola-Chattahoochee-Flint (ACF) River Basin, which flows through the states of Georgia, Alabama, and Florida. The Flint River is approximately 350 miles long and drains an area of 8,460 square miles. Most of the larger tributaries in the ACF River Basin are located in the lower reaches of the Flint River Basin.


Figure 1. Chattahoochee River.


Figure 2. Flint River.

Stream Flow
The following table lists stream flow data for the Chattahoochee and Flint Rivers. The locations of the U.S. Geological Survey gauging stations are denoted within the parentheses.

Table 1. Stream flow data from USGS. Stream flow is measured in units of cubic feet per second (cfs) flowing past a point.

 

Chattahoochee River
(Columbus, GA)

Flint River
(Newton, GA)

Drainage Area (square miles)

8,770

8,460

Min Daily Flow (cfs)

498

922

Mean Daily (cfs)

8,250

4,030

Max Daily (cfs)

191,000

47,000

Years of Collection

1977-1992

1977-1992

Land cover and land use patterns
Population within the metropolitan Atlanta area increased 97% from 1970 to 1995. In 1995, the estimated population was 3.1 million people in the 13 county metropolitan area. Table 2 lists the 1998 land cover percentages for the Chattahoochee and Flint River basins. The Natural Resources Spatial Analysis Laboratory (NARSAL) at the University of Georgia provided the tabular data.

Table 2. 1998 land cover statistics.

 

Chattahoochee River

Flint River

Beach

0.02%

0.01%

Water

3.34%

1.44%

Suburban

7.17%

2.05%

Commercial

3.75%

1.57%

Clearcut

7.61%

5.54%

Mines, rock outcrops

0.11%

0.07%

Deciduous forest

28.90%

13.14%

Evergreen forest

25.99%

24.83%

Mixed forest

6.93%

5.14%

Agriculture

12.64%

35.27%

Wetlands

3.55%

10.94%

Protected species
Classified as one of the nation's 20 most endangered rivers, the Chattahoochee River provides valuable wildlife habitat for migratory birds, mammals (including deer, beaver, otter), reptiles and amphibians. There are four federally endangered and two federally threatened mussel species found in the Chattahoochee-Flint river basin. The four endangered mussel species are the fat threeridge (Amblema neislerii), shinyrayed pocketbook (Lampsilis subangulata), Gulf moccasinshell (Medionidus penicillatus), and oval pigtoe (Pleurobema pyriforme) have been federally listed as endangered since 1997. Two threatened mussel species are the chipola slabshell (Elliptio chipolaensis) and purple bankclimber (Elliptoideus sloatianus). All six mussel species prefer main channel or large stream sandy habitats with slow to moderate currents.

Impoundments in the Chattahoochee-Flint River Basin
The U.S. Army Corps of Engineers has constructed dams, which created large impoundments for flood control, water supply, power, and commercial navigation. Thirteen of 16 mainstem dams in the ACF River basin are along on the Chattahoochee River. Over most of its length, hydroelectric plants release water for production of hydropower and control the flow. Dam construction in the basin began in the early 1800's on the Chattahoochee River above the Fall Line at Columbus, GA to take advantage of natural elevation gradients for power production. During low flow periods, stored water is used to supplement the discharge of the river. There have been marked decreases in the frequency of high and low flows since the start of operation of Buford Dam in 1956, and river flows fluctuate daily below the reservoirs along the Chattahoochee River. Lake Lanier provides 65 percent of the water storage to regulate flows, yet it only drains 5 percent of the ACF River basin.

Two hydropower dams located on the Flint River impound run-of-the-river reservoirs and do not appreciably influence the monthly flow of the Flint River, but do alter the daily flow regime. The Flint River has one of only 42 free-flowing river reaches longer than 125 miles remaining in the contiguous 48 states.

Four large reservoirs along the Chattahoochee River include:

 

Area

Shoreline

Lake Lanier

38,000 acres

540 miles

West Point Lake

25,900 acres

525 miles

Lake Walter F. George

45,180 acres

640 miles

Seminole

37,500 acres

500 miles

Groundwater
The headwaters of the Chattahoochee and Flint Rivers occur north of the Fall Line in the Blue Ridge and Piedmont Provinces. Water supplies in the headwater region derive primarily from surface waters. South of the Fall Line, one finds Providence aquifers and upper Cretaceous strata. The Providence aquifer system is the deepest of the principal aquifers in southern Georgia and consists of sand and gravel separated by clay and silt confining beds. The lower reaches of both rivers are part of the Floridan aquifer system, a karst limestone aquifer that is susceptible to contamination. This aquifer is one of the most productive worldwide. The hydrology connecting the Floridan aquifer and the Flint River results in ground-water discharge contributing more to baseflow in the Flint River than in the Chattahoochee River. Ground water flow into the Chattahoochee River is one-fifth of that discharging into the Flint River.

Impaired Waters
Six percent of the surface waters sampled in the Upper Flint River and 19% of those sampled in the Lower Flint River are categorized as impaired by the EPA. Nonpoint sources and urban/storm water runoff are the primary contributors to pollution in the Flint. Unlike the Flint, the highest impairment of surface waters in the Chattahoochee River occurs in the upper and middle reaches of the river, which is flowing through the city of Atlanta. The upper Chattahoochee is ranked in the top ten percent of the most polluted watersheds in the state of Georgia and top twenty percent in the nation. Significant contributions include urban/storm water runoff, nonpoint and municipal point sources, and combined sewer outflows.

 

FROM: http://www.georgiaencyclopedia.org/nge/Article.jsp?id=h-950

 

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Chattahoochee River

The Chattahoochee River rises high in the Blue Ridge Mountains of Georgia and flows southwesterly toward the Alabama state line. From there the river tumbles for twenty miles over the fall line—the region of transition between the foothills of the Piedmont and the lower and flatter Coastal Plain. Below the fall line in Columbus, the river slows to ramble south toward Florida, where it is known as the Apalachicola.

Early History

Archaeological evidence indicates that humans have lived along the banks of the Chattahoochee River for a very long time.

From Flowing through Time: A History of the Lower Chattahoochee River, by L. Willoughby

Chattahoochee Valley Archaeological Sites

Dating to 1000 B.C., the Kolomoki complex near present-day Blakely is one of the best-known sites of these ancient civilizations. During the Mississippian Period (A.D. 800-1600), at least sixteen significant settlements dotted the Chattahoochee's banks south of the fall line. As these civilizations died because of exposure to European diseases, native survivors from other areas moved into the river valley below present-day Atlanta. They arrived separately and at different times but eventually established sufficient political, linguistic, and cultural bonds to be referred to as one people—the Creeks. (The Cherokees lived near the headwaters of the river.) The Creeks may have acquired their English name from their habit of settling near the larger tributaries of rivers like the Chattahoochee. The Creeks respected the river as a food source, a transportation artery, and an esteemed element of the spirit world. The Creeks named the river; Indian agent Benjamin Hawkins recorded in 1799 that chat-to meant "stone," and ho-che meant "marked" or "flowered."

By treaty, the Creeks gradually ceded their lands to white settlers south of Fort Gaines in 1814 and east of the Chattahoochee by 1825. In 1827 the Florida legislature established the port town of Apalachicola and built wharves to receive upstream cotton. In 1828 the Georgia legislature created the town of Columbus at the head of navigation.

River Traffic and Trade

The first steamboat to run from the Gulf of Mexico to Columbus was the Fanny, which completed the journey of several months in January 1828.

From Flowing through Time: A History of the Lower Chattahoochee River, by L. Willoughby

 Queen City 

Other boats quickly followed, and Columbus became a thriving cotton-marketing center with unimpeded river travel to the south and intermittent river travel possible northward all the way to present-day Gwinnett County in metropolitan Atlanta.

Most of the year, however, the twenty miles of waterfalls along the fall line between Columbus and Franklin acted as a barrier separating the two navigable ends of the Chattahoochee. Above the falls, Colonel Reuben Thornton ran barges and flatboats from West Point to Standing Peachtree, about sixty miles upstream and seven miles from present-day Atlanta's Five Points area. Others ran flatboats between Franklin and West Point as early as 1838. The various settlements in the present-day Atlanta area grew up around taverns at ferries that allowed travelers to cross the river and continue on into Tennessee by land. Northeast of present-day Atlanta the Chattahoochee River resembled a swift creek and powered a number of sawmills and gristmills.

Civil War and Postwar Development

By the late 1830s the towns located at the fall line along the Chattahoochee also used the river as an industrial power source for textile mills and gristmills. By the time the Civil War began in 1861, Columbus was known as "the Lowell of the South," after the home of industrial revolution, Lowell, Massachusetts. Its mills were vitally important to the Confederacy, and defense of the river was crucial, because it represented the easiest route to the fall line mills from the Gulf of Mexico, especially after Union naval forces took possession of Apalachicola in April 1862.

The Confederate government created the Chattahoochee-Flint-Apalachicola military district, commanded by General Howell Cobb, in November 1862. Cobb directed the obstruction of the river, which was effective in keeping out the enemy by water. However, Union land forces did invade the river valley in 1864, when General William T. Sherman's army crossed over the Chattahoochee just north of Atlanta and sacked the city before moving on toward Savannah in the March to the Sea. As the war was ending in April 1865, General James H. Wilson's forces crossed the Chattahoochee River to destroy the factories and mills of Columbus and West Point.

The golden age of steamboating on the Chattahoochee dawned once the area recovered from the war's destruction. Opulent new passenger boats replaced the workhorse freighters of the antebellum period. Innovations in service made river travel more reliable, and technological breakthroughs made it safer. Freight became more diversified, with lumber products, fertilizer, and honey crowding the ubiquitous cotton bales. During this period poet Sidney Lanier composed "The Song of the Chattahoochee" (1877), in which the river narrates its journey through Habersham and Hall counties.

Instead of calling on every homestead or business along the river, by 1900 steamboats stopped at only twenty-eight major communities or railroad junctions. Sixteen years later, the steamers made only five stops as the river trade shifted to the lower river (south of Eufaula, Alabama), where navigation was unimpeded by seasonal low water and natural obstructions.

Power, Dams, and Controls

In the post–World War I era, rail lines and improved roads proved to be the most direct and dependable form of transportation.

Courtesy of Jim Kundell, Carl Vinson Institute of Government, University of Georgia

Chattahoochee River

The river was relied on less as a transportation conduit than as a hydroelectric power provider. Using the rushing water of the fall line, citizens built the first large-scale hydroelectric dams between 1899 and 1924 at North Highlands, Goat Rock, and Bartlett's Ferry. After these early modern dams were in place, the public began to see the need for other dams for flood control. At West Point especially, residents were so accustomed to high waters that the town raised the wooden sidewalks five feet above street level.

In 1953 Congress authorized the Apalachicola-Chattahoochee-Flint Project, which set out to construct four dams for flood control, power generation, and navigation. The Jim Woodruff Dam (backing up the waters of the Chattahoochee and Flint rivers to create Lake Seminole); the George W. Andrews Lock and Dam at Columbia, Alabama; the Walter F. George Lock and Dam near Eufaula, Alabama; and the Buford Dam near Gainesville were all completed by 1963. The Georgia Power Company built a final hydroelectric dam, known as Oliver Dam, near Columbus in 1959. After a particularly devastating flood in 1961, Congress finally authorized a dam for West Point in 1962, which was completed in 1975.

Courtesy of Georgia Department of Economic Development

Chattahoochee River

Today the Chattahoochee River is valued more as a source of drinking water and recreation than as a transportation artery. The water it supplies underpins the regional economies of today and tomorrow. While Georgia, Alabama, and Florida squabble over the unrestricted right to use the river, the Chattahoochee continues to follow its ancient route to the sea. Though it is used little as a highway today, it remains the valley's most important ecological and economic asset.

New Georgia Encyclopedia

FROM: http://www.northgeorgiawater.com/files/chatt_basin_map.pdf