€2.8 Million investment to restore the Río Mula and reduce flood risk

The CHS is restoring the Río Mula river from La Cierva reservoir to the Segura River to improve drainage and the riverbanks

Restoration of the Río Mula river has begun, with over €2.8 million being spent to remove invasive cane species and bring back the river’s natural banks. The river has been affected by the spread of giant cane (Arundo donax), a tall, fast-growing reed originally from Asia that was introduced for fencing and riverbank protection in the past.

It spreads quickly, often carried by water or floods, forming dense stands that take over native plants, and it reduces wildlife and blocks the natural water flow.

The project, led by the Confederación Hidrográfica del Segura (CHS), the government body responsible for managing the Segura river basin, stretches from the La Cierva Reservoir to where the Mula River meets the Segura River, including specific work in the Rambla de Perea.

The work is split into two main sections. From Los Rodeos Reservoir to the Segura River, about €1.44 million is being used to improve drainage while restoring the riverside vegetation.

From La Cierva to Los Rodeos, €1.39 million is focused on completing the restoration along the river, so work is carried out consistently and continuously across the whole section.

The river has been struggling with the spread of this giant cane, which has taken over native plants, reduced wildlife, and blocked natural water flow. Clearing it will give native species a chance to return, helping local wildlife and reducing the risk of stagnant water or blockages during heavy rain.

The work involves mechanically clearing the cane and its roots, planting native trees and shrubs, improving low-water channels, stabilising riverbanks, and using bioengineering techniques to reduce erosion. Technical teams will keep an eye on the new plantings, carrying out maintenance and controlling any regrowth.

When the work is finished, the river will flow more naturally again, with greener banks that give the wildlife and plants space along the river. Over time, it should help the water run more smoothly, cut down the risk of flooding, and keep the surrounding environment and landscape in good shape for years to come.

Images: CHS