&EPA United States Environmental Protection Agency Office of Water Office of Wetlands, Oceans and Watersheds (4502F) VV/etlawd OUR VITAL LINK BETWEEN LAND AND WATER ------- U.S. EPA Involvement The U.S. Environmental Protection Agency (EPA), in partnership with other federal agencies, and state, local, and tribal governments, is responsible {or restoring and maintaining the chemical, physical, and biological integrity of the nation's waters. Because of the value and junction o_f wetlands as an integral part o_f those waters, EPA is also chargedwith protecting wetland resources. Themajorfederal regulatory tool/or this is Section 404 o_f the Clean Water Act, which is jointly administered by the U.S. Army Corps o_f Engineers and EPA. Section 404 establishes a permit program to regulate the discharge o_f dredged or fill material into waters of the United States, including most wetlands. The U.S. Fish and Wildlife Serviceand the National Marine Fisheries Service have important advisory roles in the permit review process under the Clean Water Act, and the Natural Resources Conservation Service has the lead responsibility for identifying wetlands on agricultural lands. EPA recognizes that a truly effective program to protect our nation's wetlands must include supplemental approaches to the Clean Water Act, along with the cooperation of federal, state, and local agencies, developers, farmers, foresters, environmental groups, the scientific community, and thepublic. Active citizen support and participation is an essential ingredient of such a program. EPA uses a number of non-regulatory programs to supplement the Section 404 program: a contractor-operated telephone hotline to allow easy access to the EPAfor information about wetlands (see back cover); distribution of publications and fact sheets about wetlands; partnerships with private landowners and state and local governments, comprehensive watershed planning, education programs for the public, and support of efforts to improve wetlands management (e.g., workshops, conferences, and research). The EPA is also involved in a long-term project to monitor and assess the ecological resources of our country. \\J Wetlands are indeed the vital link between water and land. "Wetlands" is the collective term for marshes, swamps, bogs, and similar areas found in generally flat vegetated ar- eas, in depressions in the landscape, and between dry land and water along the edges of streams, rivers, lakes, and coastlines. Wetlands can be found in nearly every county and climatic zone in the United States. Most likely, a wetland exists in your neighborhood or very close to it. Because they are so varied, wetlands can be difficult to recognize. Some are wet all of the time/ some may look completely dry most of the time. Our ideas of what a wetland should look like may not include all types of wetlands. Some wetlands are large and some are very small. Many have been altered by human activities such as farming, ranching, and the build- ing of roads, dams, and towns. Wetlands have often been re- garded as wastelands — sources of mosquitoes, flies, unpleasant odors, Great Blue Heron and disease. People thought of wet- lands as places to avoid or, better yet, eliminate. Largely because of this negative view, more than half of America's original wetlands have been destroyed—drained and con- verted to farmland, filled for hous- ing developments and industrial facilities, or used to dispose of house- hold and industrial waste. As people understand ecological processes better, attitudes towards wetlands change. We now know that For more information, contact the EPA Wetlands Information Hotline U.S. FWS, Herb Stein ------- wetlands are, in fact, valuable natu- ral resources. Whether drier or wet- ter, bigger or smaller, wetlands provide important benefits to people and the environment. Wetlands help regulate water levels within water- sheds/ improve water quality/ reduce flood and storm damages/ provide important fish and wildlife habitat/ and support hunting, fishing, and other recreational activities. Wet- lands are natural wonderlands of great value. Reading this booklet will give you a better understanding of the rich va- riety of wetlands, their importance, how they are threatened, and what can be done to conserve them for future generations. Prairie Pothole Wetlands U.S. FWS ------- cure Wetlands are areas where water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the grow- ing season. Water saturation (hy- drology) largely determines how the soil develops and the types of plant and animal communities living in and on the soil. Wetlands may support both aquatic and terrestrial species. The prolonged presence of water cre- ates conditions that favor the growth of specially adapted plants (hydro- phytes) and promote the develop- ment of characteristic wetland (hydric) soils. Wetlands vary widely because of regional and local differences in soils, topography, climate, hydrology, wa- ter chemistry, vegetation, and other factors, including human distur- bance. Indeed, wetlands are found from the tundra to the tropics and on every continent except Antarc- tica. Two general categories of wet- lands are recognized: coastal or tidal wetlands and inlander non-tidal wet- lands. Coastal wetlands in the United States, as their name suggests, are found along the Atlantic, Pacific, Alaskan, and Gulf coasts. They are closely linked to our nation's estuar- ies, where sea water mixes with fresh water to form an environment of varying salinities. The salt water and the fluctuating water levels (due to tidal action) combine to create a rather difficult environment for most plants. Consequently, many shallow coastal areas are unvegetated mud flats or sand flats. Some plants, how- ever, have successfully adapted to this environment. Certain grasses and grasslike plants that adapt to the sa- line conditions form the tidal salt marshes that are found along the At- lantic, Gulf, and Pacific coasts. Man- grove swamps, with salt-loving shrubs or trees, are common in tropical cli- mates, such as in southern Florida and Puerto Rico. Some tidal freshwater wetlands form beyond the upper edges of tidal salt marshes where the influence of salt water ends. Inland wetlands are most common on floodplains along rivers and streams (riparian wetlands), in iso- lated depressions surrounded by dry land (for example, playas, basins, and "potholes"), along the margins of lakes and ponds, and in other low- lying areas where the groundwater in- tercepts the soil surface or where precipitation sufficiently saturates the ------- Riparian Wdland EPA Region 8, Paul Mclver soil (vernal pools and bogs). Inland wetlands include marshes and wet meadows dominated by herbaceous plants, swamps dominated by shrubs, and wooded swamps domi- nated by trees. Certain types of in- land wetlands are common to particular regions of the country: • bogs and fens of the northeastern and north-central states and Alaska * wet meadows or wet prairies in the Midwest * inland saline and alkaline marshes and riparian wetlands of the arid and semiarid west • prairie potholes of Iowa, Minnesota and the Dakotas * alpine meadows of the west * playa lakes of the southwest and Great Plains • bottomland hardwood swamps of the south * pocosins and Carolina Bays of the southeast coastal states * tundra wetlands of Alaska. Many of these wetlands are sea- sonal (they are dry one or more sea- sons every year), and, particularly in the arid and semiarid West, may be wet only periodically. The quantity of water present and the timing of its presence in part determine the functions of a wetland and its role in the environment. Even wetlands that appear dry for a few months — such as vernal pools — often provide criti- cal habitat for wildlife adapted to breeding exclusively in these areas. ;•:•:::• Seasonal Wetland in. Sfrmti •' H JWVhlH SjSs S^i • • -ft For more information, contact the EPA VI 'e&mls Informa ilon Hotline ------- aw ^XJ, ct^V\c,t vnre Wetlands are among the most pro- ductive ecosystems in the world, comparable to rain forests and coral reefs. An immense variety of spe- cies of microbes, plants, insects, am- phibians, reptiles, birds, fish, and mammals can be part of a wetland ecosystem. Physical and chemical features such as climate, landscape shape (topology), geology, and the movement and abundance of water help to determine the plants and ani- mals that inhabit each wetland. The complex, dynamic relationships among the organisms inhabiting the wetland environment are referred to as food webs, (see illustration below).This is why wetlands in Texas, North Carolina, and Alaska differ from one another. Wetlands can be thought of as "biological supermarkets." They pro- vide great volumes of food that at- tract many animal species. These animals use wetlands for part of or all of their life-cycle. Dead plant leaves and stems break down in the water to form small particles of or- ganic material called "detritus." This enriched material feeds many small aquatic insects, shellfish, and small fish that are food for larger preda- tory fish, reptiles, amphibians, birds, and mammals. Wetlands support a ricli j web, from microscopic algae and dragonfly larvae to alligators and black bears. The functions of a wetland and the values of these functions to human society depend on a complex set of relationships between the wetland and the other ecosystems in the wa- tershed. A watershed is a geographic area in which water, sediments, and dissolved materials drain from higher elevations to a common low-lying outlet or basin — a point on a larger stream, lake, underlying aquifer, or estuary. Wetlands play an integral role in the ecology of the watershed. The combination of shallow water, high Mark Sharp ------- levels of nutrients, and primary pro- ductivity is ideal for the development of organisms that form the base of the food web and feed many species of fish, amphibians, shellfish, and in- sects. Many species of birds and mammals rely on wetlands for food, water, and shelter, especially during migration and breeding. Wetlands' microbes, plants, and wildlife are part of global cycles for water, nitrogen, and sulfur. Further- more, scientists are beginning to re- alize that atmospheric maintenance may be an additional wetlands func- tion. Wetlands store carbon within their plant communities and soil in- stead of releasing it to the atmo- sphere as carbon dioxide. Thus wetlands help to moderate global cli- mate conditions. High Mountain Valley Wetland at to,oooFeet Bottomland Hardwood Swamp Todd Votteler For more information, contact the EPA Wetlands Information Hotline ------- \\J awcv a wels eople Only recently have we begun to understand the importance of the functions that wetlands perform. Far from being useless, disease-ridden places, wetlands provide values that no other ecosystem can, including natural water quality improvement, flood protection, shoreline erosion control, opportunities for recreation and aesthetic appreciation, and natu- ral products for our use at no cost. Wetlands can provide one or more of these functions. Protecting wet- lands in turn can protect our safety and welfare. Water Quality and Hydrology Wetlands have important filtering capabilities for intercepting surface- water runoff from higher dry land be- fore the runoff reaches open water. As the runoff water passes through, the wetlands retain excess nutrients and some pollutants, and reduce sediment that would clog waterways and affect fish and amphibian egg de- velopment. In performing this filter- ing function, wetlands save us a great deal of money. For example, a 1990 study showed that, without the Congaree Bottomland Hardwood Swamp in South Carolina, the area would need a $5 million waste water treatment plant. In addition to improving water quality through filtering, some wet- lands maintain stream flow during dry periods, and many replenish groundwater. Many Americans de- pend on groundwater for drinking. Flood Protection Wetlands function as natural sponges that trap and slowly release surface water, rain, snowmelt, groundwater and flood waters. Trees, root mats, and other wetland vegeta- tion also slow the speed of flood waters and distribute them more slowly over the floodplain. This combined water stor- age and braking action lowers flood heights and reduces erosion. Wetlands within and downstream of urban areas are particularly valuable, counteracting the greatly increased rate and volume of surface- water runoff from pavement and buildings. The holding capacity of wetlands helps control floods and prevents water logging of crops. Preserving Texas Parks and Wildlife D Kelly Drake ------- and restoring wetlands, together with other wa- ter retention, can often provide the level of flood control otherwise provided by expensive dredge opera- tions and levees. The bottomland hardwood-riparian wetlands along the Mississippi River once stored at least 60 days of floodwater. Now they store only 12 days because most have been filled or drained. Shoreline Erosion The ability of wetlands to control erosion is so valuable that some states are restoring wetlands in coastal ar- eas to buffer the storm surges from hurricanes and tropical storms. Wet- lands at the margins of lakes, rivers, bays, and the ocean protect shore- lines and stream banks against ero- sion. Wetland plants hold the soil in place with their roots, absorb the energy of waves, and break up the flow of stream or river currents. Fish and Wildlife Habitat More than one-third of the United States' threatened and endangered species live only in wetlands, and nearly half use wetlands at some point in their lives. Many other ani- mals and plants depend on wetlands for survival. Estuarine and marine fish and shellfish, various birds, and certain mammals must have coastal wet- lands to survive. Most commercial and game fish breed and raise their young in coastal marshes and estu- aries. Menhaden, flounder, sea trout, spot, croaker, and striped bass are among the more familiar fish that depend on coastal wetlands. Shrimp, oysters, clams, and blue and Dungeness crabs likewise need these wetlands for food, shelter, and breeding grounds. For many animals and plants, like wood ducks, muskrat, cattails, and swamp rose, inland wetlands are the only places they can live. Beaver may actually create their own wet- lands. For others, such as striped bass, peregrine falcon, otter, black bear, raccoon, and deer, wetlands provide important food, water, or shelter. Many of the U.S. breed- ing bird populations—including ducks, geese, woodpeckers, hawks, wading birds, and many song- birds—feed, nest, and raise their young in wetlands. Migratory wa- terfowl use coastal and inland wet- lands as resting, feeding, breeding, or nesting grounds for at least part of the year. Indeed, an international agreement to protect wetlands of in- ternational importance was devel- oped because some species of migratory birds are completely de- pendent on certain wetlands and would become extinct if those wet- lands were destroyed. For more information, contacttheEPA M'e'UKJs Information Hotline ------- Natural Products for Our Economy We use a wealth of natural prod- ucts from wetlands, including fish and shellfish, blueberries, cranber- ries, timber, and wild rice, as well as medicines that are derived from wetland soils and plants. Many of the nation's fishing and shellfishing industries harvest wetland-depen- dent species/ the catch is valued at Alligator U.S. EPA Hunlivj rn u Wd'lMid $ 15 billion a year. In the Southeast, for example, nearly all the commer- cial catch and over half of the recre- ational harvest are fish and shellfish that depend on the estuary-coastal wetland system. Louisiana's coastal marshes produce an annual commer- cial fish and shellfish harvest that amounted to 1.2 billion pounds worth $244 million in 1991. Wet- lands are habitats for fur-bearers like muskrat, beaver, and mink as well as reptiles such as alligators. The nation's harvest of muskrat pelts alone is worth over $70 million annually. Texas Parks and Wildlife Dept. Recreation and Aesthetics Wetlands have recreational, his- torical, scientific, and cultural values. More than half of all U.S. adults (98 million) hunt, fish, birdwatch or pho- tograph wildlife. They spend a total of $59.5 billion annually. Painters and writers continue to capture the beauty of wetlands on canvas and paper, or through cameras, and video and sound recorders. Others appre- ciate these wonderlands through hik- ing, boating, and other recreational activities. Almost everyone likes be- ing on or near the water,- part of the enjoyment is the varied, fascinating lifeforms. For more information, tovl'tdthe EPA Wetlands Information Hotline ------- Major Causes of Wetland Loss and Degradation Human Actions Drainage Dredging and stream channelization Deposition of/ill material Diking and damming Tilling for crop production Levees Logging Mining Construction Runoff Air and water pollutants Changing nutrient levels Releasing toxic chemicals Introducing nonnative species Grazing by domestic animals Natural Threats Erosion Subsidence Sea level rise Droughts Hurricanes and other storms Current Situation The lower 48 states contained an estimated 103.3 million acres of wet- lands in the mid-1980s. This is an area about the size of California. An estimated 170-200 million acres of wetland exist in Alaska — covering slightly more than half of the state — while Hawaii has 52,000 acres. Next to Alaska, Florida (11 million), Louisiana (8.8 million), Minnesota (8.7million), and Texas (7.6 million) have the largest wetland acreage. In the 1600s, over 220 million Peat Mining in a Wetland/Montane acres of wetlands are thought to have existed in the lower 48 states. Since then, extensive losses have occurred, with many of the original wetlands drained and converted to other uses. From the 1950s to the 1970s was a time of major wetlands loss, but since on 8, Paul Mclver Percentage of Wetlands Acreage Lost, 1 780's-1 980's Twenty-two states have lost at least 50 percent of their ori^ta^l wetlands. Seven states- Indiana, Illinois, Missouri, Kentucky, Iowa, California, and Ohio havelost over 80 percent of their original wetlands. Since the 1970s, the most extensive losses of wetlands have been in Louisiana, Mississibbi, Arkansas, Florida, South Carolina, and North Carolina. ------- that time the rate of loss has de- creased. Today, less than half of our original wetlands remain, and recent trend estimates show that wetlands are still being degraded and lost. Recent estimates on non-federal land indicate that the rate of loss is be- tween 70,000 and 90,000 acres an- nually. Between the mid-1970s and the mid-1980s, approximately 3.3 mil- lion acres of inland freshwater wet- lands were destroyed, and the amount of coastal wetlands de- Extent of Wetlands in the Lower 48 States 463 fvlllions of acres creasedby 71,000 acres. In- land forested wetlands, pri- marily in the southeast, were impacted the most during this time, with a loss of 2.5 million acres. Ap- proximately 900,000 acres were converted from for- ested wetlands to other wet- land types (through logging and other activity). Conver- sion to agricultural use was responsible for 54 percent of the losses, drainage for urban development for 5 percent, and development for 41 percent. In addition to these losses, many other wetlands have suf- fered degradation of functions, al- though calculating the magnitude of the degradation is difficult. These losses, as well as degrada- tion, have greatly diminished our nation's wetlands resources/ as a re- sult, we no longer have the benefits they provided. The increase in flood damages, drought damages, and the declining bird populations are, in part, the result of wetlands degrada- tion and destruction. Wetlands have been degraded in ways that are not as obvious as di- rect physical destruction or degra- dation. Other threats have included chemical contamination, excess nu- trients, and sediment from air and water. Global climate change could affect wetlands through increased air temperature/ shifts in precipitation/ increased frequency of storms, droughts, and floods/ increased at- mospheric carbon dioxide concentra- tion/ and sea level rise. All of these impacts could affect species compo- sition and wetland functions. Draining Wetlands for Irrigation Dick Gersib Source: Dahl and Johnson. 1991. Wetlands .Swiws m-d Trends in the Coterminous ------- As water, sediments, and nutrients move through watersheds, different wetlands perform differentjunctions, but all contribute to the ecosystem. \\J e tie* vvds iroCectcow The federal government protects wetlands through regulations (like Sec- tion 404 of the Clean Water Act), economic incentives and disincentives (for example, tax deductions for selling or donating wetlands to a qualified organization and the "Swampbuster" provisions of the Food Security Act), cooperative programs, and acquisition (for example, establishing national wildlife refuges). You can find out more about these mechanisms by calling the Wetlands Hotline (1 -800- 832-7828). Beyond the federal level, a num- ber of states have enacted laws to regulate activities in wetlands, and some counties and towns have adopted local wetlands protection or- dinances or have changed the way development is permitted. Most coastal states have significantly re- duced losses of coastal wetlands through protective laws. Few states, however, have laws specifically regu- lating activities in inland wetlands, although some states and local gov- ernments have non-regulatory pro- Todd Votteler For more information, contact the EPA 11 VK.-tmJs Informa lion Hotline ------- Jennifer Matchett grams that help pro- tect wetlands. Recently, partner- ships to manage whole watersheds have developed among federal, state, tribal, and lo- cal governments,- nonprofit organi- zations/ and private landowners. The goal of these partnerships is to imple- ment comprehensive, integrated wa- tershed protection approaches. A watershed approach recognizes the inter- connectedness of water, land, and wetlands resources and results in more complete solutions that address more of the factors causing wetland degradation. The government achieves the restoration of former or degraded wetlands under the Clean Water Act Section 404 program as well as through watershed protection initiatives. Together, partners can share limited resources to find the best solutions to protect and restore America's natural resources. While regulation, economic incen- tives, and acquisition programs are important, they alone cannot protect the majority of our remaining wet- lands. Education of the public and ef- forts in conjunction with states, local governments, and private citizens are helping to pro- tect wetlands and to increase appreciation of the functions and values of wetlands. The rate of wet- lands loss has been slowing, but we still For more information, contact the EPA Wet,tads Informa iion Hotline Wood Ducks U.S. FWS, Tim McCat ------- have work to do. You can be a part. Approximately 75 percent of wet- lands are privately owned, so indi- vidual landowners are critical in protecting these national treasures. What You Can Do Despite the efforts of governments and private conservation organiza- tions, pressures that destroy wetlands will continue. The problems of deg- radation of wetlands from pollution, urban encroachment, groundwater withdrawals, partial drainage, and other actions also require attention. Many opportunities exist for pri- vate citizens, corporations, govern- ment agencies, and other groups to work together to slow the rate of wet- land loss and to improve the quality of our remaining wetlands. First, state and local governments need to be encouraged to establish programs to effectively protect wetlands, espe- cially inland wetlands, within their borders. Second, because individual landowners and corporations own many of the nation's wetlands, they are in a key position to determine the fate of wetlands on their properties. Finally, all citizens, whether or not they own wetlands, can help protect wetlands by supporting wetlands conservation initiatives. Wetlands are an important part of our national heritage. Our economic well-being and quality of life largely depend on our nation's wealth of natural resources, and wetlands are the vital link between our land and water resources. As wetlands are lost, the remaining wetlands become even more valuable. We have already lost many of our nation's wetlands since America was first settled. We must now take positive steps to protect wetlands to ensure that the functions and related values they provide will be preserved for present and future generations. How Can I Make a Difference? • Get involved —find out when wetlands exist near your home, try to learn more about them, and support educational efforts. • Support wetlands and watershed protection ini- tiatives by public agencies and private organi- zations. • Purchase federal duck stamps from your local post office to support wetland acquisition. • Participate in the Clean Water Act Section 404 program and state regulatory programs by re- viewing public notices and, in appropriate cases, commenting on permit applications. • Encourage neighbors, developers, and state and local governments to protect the function and value of wetlands in your watershed. • Rather than draining or filling wetlands, seek compatible uses involving minimal wetland al- teration, such as waterfowl production, fur har- vest, hay and forage, wild rice production, hunting and trapping leases, and selective tim- ber harvest. • Select upland rather than wetlands sites for de- velopment projects and avoid wetland alteration or degradation during project construction. • Maintain wetlands and adjacent buffer strips as open space. • Learn more about wetland restoration activities in your area, seek and support opportunities to restore degraded wetlands. • In Mew England, participate in EPAs "Adopt- a-Wetland" program. ------- Regional Offices EPA Region 1 John F. Kennedy Federal Building One Congress Street Boston, MA 02203 Connecticut, Massachusetts, Maine, Mew Hampshire, Rhode Island, Vermont (617)565-3420 EPA Region 2 290 Broadway New York, NY 10007-1866 Mew Jersey, Mew York, Puerto Rico, Virgin Islands (212)537-3000 EPA Region 3 841 Chestnut Street Philadelphia, PA 19107 Delaware, Maryland, Pennsylvania, Virginia, West Virginia, District of Columbia (215)597-9800 EPA Region 4 345 Courtland Street, N.E. Atlanta, GA 30365 Alabama, Florida, Georgia, Kentucky, Mississippi, Morth Carolina, South Carolina, Tennessee (404)347-4727 EPA Region 5 77 West Jackson Boulevard Chicago, IL 60604 Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin (312)353-2000 EPA Region 6 1445 Ross Avenue, Suite 900 Dallas, TX 75202 Arkansas, Louisiana, Mew Mexico, Oklahoma, Texas (214)555-6444 EPA Region 7 726 Minnesota Avenue Kansas City, KS 66101 Iowa, Kansas, Missouri, Mebraska (913)551-7000 EPA Region 8 999 18th Street, Suite 500 Denver CO 80202 Colorado, Montana, Morth Dakota, South Dakota, Utah, Wyoming (303)293-1603 EPA Region 9 75 Hawthorne Street San Francisco, CA 94105 Arizona, California, Hawaii, Mevada, American Samoa, Guam, Palau, Morthern Mariana Islands (415)744-1305 EPA Region 10 1200 Sixth Avenue Seattle, WA 98101 Alaska, Idaho, Oregon, Washington (206)553-1200 Additional information concerning wetlands protection can be obtained from the EPA Wetlands Hotline (contractor operated) at (soo) 832-7828 from 9:00 am to 5.-00 pm EST. E-mail address: WETLANDS-HOTUNE@EPAMAILEPA.GOV Cover Photos: Texas Parks and Wildlife Department and Sandhill Cranes Lake Andes NWR, Gary Zahn EPA Headquarters Office of Wetlands, Oceans and Watersheds Wetlands Division (4502F) 401 M Street SW Washineton DC 20460 ------- |