Massive hydropower development is currently proposed for much of Mesoamerica that will industrialize the region in the name of Free Trade. More than 380 dams are currently proposed for the region, potentially affecting entire ecosystems and the biological diversity of Mexico, Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, Panama and Colombia. Currently, the most critical dam threats are the proposed hydropower projects on the border of Panama and Costa Rica on the Rio Changuinola and its major tributary, the Rio Teribe, which flow out of the La Amistad International Peace Park and Biosphere Reserve (a UNESCO World Heritage Site), through the Palo Seco Forest Reserve and the territories of the Naso and Ngobe Indian tribes, and into the Caribbean through the Changuinola estuary, the center of the 40,000-acre San San/Pondsak wetlands.

La Amistad Reserve contains Central America's largest intact tropical rainforest. Its vastness and greatly varied habitat shelter an impressive number of creatures, including nearly four percent of all terrestrial species varieties on Earth. La Amistad is one of the most biologically diverse areas on the planet, home to 115 species of fish, 250 species of reptiles and amphibians, 215 species of mammals and 600 species of birds, including the resplendent quetzal, three-wattled bellbird, bare-necked umbrella bird, harpy eagle, crested eagle, solitary eagle, orange-breasted falcon and the endemic yellow-green finch. This World Heritage Site is one of the last refuges in western Panama for major species of felines such as the puma, ocelot, jaguarundi, tiger-cat and jaguar, as well as increasingly rare species such as tapirs. More than 180 endemic plant species and six endemic amphibians have been recorded at La Amistad.

Because Panama is a narrow isthmus, the Teribe and Changuinola Rivers are relatively short and intimately connected with the sea. Many of the fish and other aquatic creatures in these streams are diadromous, meaning they need access to salt water at some stage in order to complete their life cycle. Some migrate downstream to the estuary to spawn and their young must then make their way back upstream, and others travel far upstream to reproduce and rely on currents to carry their eggs or larvae back to the sea. The dams would impede the life cycles and reproduction of the majority of fish and freshwater shrimp species in these rivers, eliminating most of the aquatic production, thus threatening fish species even below the dams. A potential consequence of the Changuinola projects and other hydropower projects proposed for Central America is the virtual disappearance of characteristic Mesoamerican river fauna, as has already occurred due to dam construction in the West Indies in places like Puerto Rico.

The Panamanian dam projects are being developed by the Colombian utility Empresas Publicas de Medellin (EPM); the U.S. corporation AES, a self-described "Global Power Company"; and Panamanian generator Hidroecologica del Teribe (HET). The Colombian corporation was seeking funding for the Bonyic project from the U.S. government controlled Inter-American Development Bank, but the project is so controversial that the IDB has at this point suspended consideration of loans for the project.

The Panama National Environmental Authority (ANAM) recently approved flawed Environmental Impact Assessments for the four proposed dams, which do not consider any impacts to the World Heritage Site. Please join the efforts of the Center, Naso and Ngobe Tribal members, Panamanian organizations and a growing international movement to protect these important Central American rivers. Voice your opposition to the Changuinola River and Bonyic Hydroelectric Projects to ANAM. Please send the letters to ANAM and to AES Corporation. If you have a moment after you send the letters, please call Paul Hanrahan, President of AES, at (703) 522-1315, and let him know it is not acceptable for a U.S. company to fund the destruction of Panama's free-flowing rivers.