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the western everglades

Cypress trees standing in shallow water in the Western Everglades

The Western Everglades spans an area roughly from the Okaloacoochee Slough headwaters near Immokalee to the coastal estuaries of southwestern Florida. They encompass more than 1,000,000 acres of wet prairies, pine islands, cypress strands, backcountry waterways, and mangrove forests. 

AWE Advocates for Western Everglades Restoration and Preservation

why preserve and restore the western everglades?

41

Listed Wildlife Species in SW Florida.

30

% More Listed Wildlife Species in than SE FL

262

Bird Species in SW FL

The Western Everglades habitat

Illustration of mangrove trees and roots with fish and marine life underwater

Minimizing Red Tide Events

A healthy balance of saltwater and freshwater and of phosphorus and nitrogen flowing to the estuaries minimizes red tide events.

Manatee swimming in clear blue water

Slowing Water Flow

Native trees and vegetation inhabiting the Everglades, as well as subtle elevational gradients and sedimentation accumulating over geologic time, slow the flow of water and provide flood attenuation.

Two anglers fishing from a skiff above a fish underwater

Healthy Waterways

Our quality of life and the economic well-being of our communities depend on our rivers, estuaries and coastal waters and on the ground waters which supply our drinking water. Our estuaries feed and protect hatchling fish, including some of our most important gamefish and commercial fisheries.

IMPACT TO OUR COASTAL WATERS

Dead fish and seaweed washed up on a beach

Multiple Adverse Events Have Devastating Effects on Our Coastal Waters

  • “Dumps” of nutrient-rich water from Lake Okeechobee into water flowing westward

  • Flows from the “bone valley” phosphate mining country North of us

  • Decades of federal canal projects to drain water efficiently & directly to the sea

  • Loop currents in the Gulf of Mexico, which bring red tide and sometimes oil spill-laden waters or sewage spills from the North to Southwest Florida’s nearshore waters

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  • Filling and building on the wetlands needed to recharge the aquifers holding our potable water

a commitment to lasting change

AWE Advocates for Long-Term Progress

  • Restore natural water flows and science-based water quality levels

  • Find funding to transition single-family homes from septic to sewers

  • Reuse and recharge water as a defense against sea level rise and saltwater intrusion

  • Protect our existing high-quality beaches and coastal ecosystem

  • Build pumps, filters and water supply areas to reduce nutrient loading into our estuaries and to better manage the timing and amount of flow of water from Lake Okeechobee

  • Support solid planning and smart growth, including the transition from fossil fuels

  • Create the political will and financial appropriations to execute restoration projects which will benefit Southwest Florida.

Aerial view of mangrove islands in Western Everglades wetlands

project highlight:

Caloosahatchee River (C-43) West Basin Storage Reservoir Project

Aerial view of the C-43 reservoir construction site

The Caloosahatchee River (C-43) West Basin Storage Reservoir project will improve the timing, quantity, and quality of freshwater flows to the Caloosahatchee River and Estuary. South Florida’s flood reduction system stores water in Lake Okeechobee during the annual wet season. When excess water is released, the resulting unnatural surges of freshwater to the Caloosahatchee River reduce estuarine salinity levels. During the dry season, when irrigation demands are high, little to no water is released to the river. This causes an increase in salinity levels. Both high and low salinity levels can trigger die-offs of seagrasses and oysters, species that are indicators of the estuary’s overall health. On June 10, 2014, the project received congressional authorization in the Water Resources Reform and Development Act (WRRDA) of 2014. This makes the project eligible for funding during the appropriations process. PROJECT PURPOSE The C-43 West Basin Storage Reservoir will help ensure a more natural, consistent flow of fresh water to the estuary. 

Map of the C-43 West Basin Storage Reservoir site with locator inset

To restore and maintain the estuary during the dry season, the project will capture and store basin stormwater runoff, along with a portion of water discharged from Lake Okeechobee, and water will be slowly released into the Caloosahatchee, as needed. This project also provides secondary benefits when the needs of the estuary are met, along with recreational benefits. Project features include: 10,500-acre storage reservoir 1,500 cubic feet per second (cfs) pump for filling the reservoir and 195 cfs pump for irrigation water supply Perimeter canal to convey drainage off-site Recreation component PROJECT STATUS: The reservoir formally opened in July 2025 and is now in its initial filling and testing phase. The U.S. Army Corps of Engineers expects initial filling to take two wet seasons, with full operations scheduled to begin in 2028.

helpful links

recommended reading

Join the push for cleaner water

Members power AWE's work for restored water flows and healthy estuaries, and get free admission to our Evening Speaker Series.

Mailing Address:

12250 Tamiami Trail E.

Suite 310

Naples, FL  34113

Phone: (239) 643-7822

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 Collier County Audubon Society, Inc., d/b/a Audubon Western Everglades, is a 501(c)3 tax-exempt organization, IRS section 170c(iii) for both federal and state tax purposes. Federal tax identification number is 23-7030698. Collier County Audubon Society, Inc.’s, State of Florida Solicitation of Contributions Registration Number is CH17894. A copy of the official registration and financial information may be obtained from the Division of Consumer Services by calling toll-free 1-800-435-7352 within the State. Registration does not imply endorsement, approval, or recommendation by the state.

© 2026 Audubon Western Everglades. All text, photos and videos are copyrighted and may not be reused without written permission.

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