The park was created in 1992 specifically to preserve the unique transition zone of the Paraná River's delta.
The landscape is physically dynamic, constantly reshaped by the frequent sediment deposits and flooding patterns of the Paraná River.
It is a designated Important Bird Area (IBA) due to its high density of aquatic and forest-dwelling avian species.
The park's wetlands are critical for the survival of the marsh deer, one of South America's largest deer species.
Pre-Delta National Park protects the transition zone between the Paraná Delta and the Espinal ecoregion in Argentina. The park encompasses a complex network of islands, streams, and lagoons formed by the sediment of the Paraná River. It serves as a vital sanctuary for the capybara, coypu, and various wetland bird species. Visitors access the park via the Administrative Center located in the city of Diamante. Hiking trails typically feature elevated wooden walkways designed to navigate the swampy, flood-prone terrain. Watercraft navigation is a primary method for exploring the deeper channels of the wetland ecosystem. The park acts as a botanical corridor, hosting species from both the subtropical north and the temperate south.
The elevated viewing platform at the end of the 'Sendero El Ceibo' trail provides an expansive overlook of the wetland marshes.
Apply heavy-duty mosquito repellent as the humid wetland environment supports high insect populations.
Wear long sleeves and trousers to protect against both sun exposure and vegetation in the tall grasses.
Check with the park administration office upon arrival for current water level conditions, as paths may flood.
Attempting to swim in the river channels due to unpredictable currents and hidden submerged logs.
Strictly no-fire policy due to high risk in dry grass; maintain distance from all wildlife; stay on marked paths to prevent trampling of fragile vegetation.
