The site occupies an area that was once used for intensive gravel mining, which inadvertently created the deep depressions that now hold the lagoons.
The lagoons rely on a combination of groundwater seepage and rainfall, as they are not fed by permanent surface streams.
The water in several of the lagoons exhibits significant salinity, supporting specialized flora that is rare in the Madrid region.
The area is a designated stopover for numerous bird species traveling along the central Iberian Peninsula migratory corridor.
The complex is part of the extensive Parque Regional del Sureste, established to protect the limestone cliffs and riverine ecosystems of the Jarama and Manzanares rivers.
Lagunas de las Madres is a protected wetland area consisting of four main lagoons formed by historical gravel extraction activities along the Jarama River floodplains. The site functions as a key biodiversity hub within the Parque Regional del Sureste, providing a sanctuary for migratory and sedentary bird species. The lagoons are characterized by high salinity levels, which influence the unique reedbed and halophytic vegetation surrounding the water bodies. Visitors can observe grey herons, kingfishers, and various species of ducks throughout the year from designated observation points. The site is actively managed for ecological conservation, resulting in a landscape that balances industrial reclamation with natural rewilding. Walking trails circulate through the grounds, offering clear views of the aquatic ecosystem and the surrounding riparian forests.
The elevated wooden bird-watching blinds provide the best vantage points for panoramic photos of the water and resident bird life.
Bring high-quality binoculars as the wildlife is often best observed from a distance to avoid startling the birds.
Wear footwear suitable for uneven, unpaved terrain that can become muddy after rainfall.
Visit during the early morning hours to maximize the chances of spotting active fauna before the midday heat.
Do not attempt to swim or wade in the lagoons, as the water quality is managed for ecological preservation rather than recreation.
Stay on marked trails to protect sensitive shoreline vegetation; pets must remain leashed at all times.
