Water management (C3)

Water management measures

This action aims to promote rainwater infiltration and reduction of runoff by promoting retention basins in green areas.

It also includes an important social dimension, with awareness of urban vegetable gardeners on best practices in water use and management.

This action is be supported by the Lisbon Drainage Master Plan (2016-2030), whose objectives have a close relationship with adaptation to climate change.

Expected sub-actions:

  • Improvement of the retention basin / Lago in Bela Vista south

Currently, this 200 m2 watershed basin has some weaknesses that compromise its performance and usefulness. This sub-action aims to improve the retention basin, and the renewal of its aquatic plants, contributing to a healthy habitat, which can support aquatic biodiversity without compromising the ability to save and retain water.

  • Installation of an area of ​​zero rainwater waste at LNEC

LNEC, located in the northern region of Lisbon, is a recognized organization in the field of water research, including the relationship between water and climate change.

This sub-action is expected to create an area of ​​about 5000 m2 accessible to citizens, with zero waste of rainwater. This prototype integrates different water management solutions that constitute an adaptation to the expected precipitation impacts (reduction of the average annual precipitation and events of intense precipitation).

  • Implementation of a pilot for water management in urban vegetable gardens and training of gardeners

This sub-action aims to reduce water consumption in urban vegetable gardens.

The regulation of urban vegetable gardens does not allow automatic irrigation systems, to promote human presence in parks. Irrigation is, therefore, a 100% human process, with high water consumption.

Thus, this sub-action involves the installation of individual water meters to make water consumption more conscious, and sessions that address issues of irrigation effectiveness, soil organic matter, integrated soil conservation actions and plant selection.

As a result of this sub-action, guidelines on sustainability of water consumption are developed, to be applied in other urban vegetable garden areas.

Timeframe: the installation of zero rainwater waste area at LNEC is expected to be completed by the end of 2021 and the remaining two sub-actions are to start around the third quarter of 2021.