Small Water Impounding Projects (SWIPs) for Rainwater Harvesting
Climate Adaptation Effectiveness
Implementation of SWIPs is effective in mitigating floods by collecting and storing rainwater and surface runoff. When clusters of SWIPs for rainwater harvesting are constructed in an area, it could prevent large-scale flooding by reducing flood peak discharge. The stored rainwater is used as supplementary irrigation for farmlands during dry seasons and water source for aquaculture .
- Extreme Rainfall
- Rainfall Variability
- Rain-Induced Flooding
- Talugtog municipality, Nueva Ecija, Region III (Central Luzon)
- Water Management
- Action Delivery
Target Group based on Vulnerability
- Farmers and Landless Rural Workers
- Indigenous Peoples
- Persons with Disabilities
- Senior Citizens
- Youth and Students
Economic / Financial Effectiveness
There is no upfront initial cost for the project because this is fully funded by the LGU. The rainwater harvested by the SWIPs is used as a water source for supplemental irrigation, inland fish production, livestock management, and for domestic and recreational uses. With an average age of 14 years (3 - 21 years), most SWIPs have reached an economic life of 25 years, with their main embankments still intact and no major structural damage. Spillways need regular cleaning and maintenance .
In Talugtog, Nueva Ecija, most of the SWIPs observed have been functioning for 25 years thus it would need a certain amount of upkeep. Although the majority are highly functional and are efficient, the spillways should be cleaned regularly. The embankments, outlet works, and control gate valves should also be regularly checked for maintenance and needed repairs. This is possible with the organization of a small water impounding system association (SWISA) who would be responsible for maintaining the SWIPs and coordinating with the LGU for funds .
SWIPs are highly accepted by farmers. In the past years, they have recognized its importance and requested the construction of SWIPs in their respective localities .
The construction of SWIPs aid in flood mitigation and reduce soil erosion .
Due to its contribution to agriculture, SWIPs preserve or maintain soil carbon stocks .
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