Barangay Napaan, Malay, Philippines
COMMUNITY-LED FLOOD MITIGATION PROJECT / 2019

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UCRISP and estudioOCA developed a series of evidence-based Nature-Based Solutions (NBS) strategies on several disaster prone areas and communities in the Philippines. For the municipality of Malay, we focused on flood mitigation efforts that promote community-led resilience planning though the implementation of small-scale initiatives within the region. 

 

Barangay Napaan is a rural settlement located in the predominantly agricultural municipality of Malay, Aklan Province in the Philippines.  It was selected as the site for resilience issues prioritized by the community such as flash floods during monsoon season, which have been exacerbated by vegetation cover loss caused by  development upstream.

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NAPAAN RIVER VALLEY. DISTURBANCE CAUSED BY NEW DEVELOPMENT VISIBLE AT BOTTOM

UCRISP developed a network of nature-based strategies to help mitigate flash floods throughout the Napaan River basin. These evidence-based strategies included expanding infiltration areas to accommodate stormwater during flood events, thus mitigating future damage incurred by local communities.  Gabions were also used to reduce the speed of water during storm surges and protect river banks at key areas. 

 

Environmental restoration measures, including reforestation using native plants plays a critical role in the scheme which helps increase infiltration and reduces erosion that exacerbates flooding downstream.

We focused on developing an inclusive interdisciplinary approach that incorporates social, economic, ecological, and engineering, working together with sustainable design and planning.  

 

Through interactive workshops and seminars, we provide capacity building techniques to project stakeholders that correspond to sustainable management strategies, in particular flood  mitigation strategies. These workshops also enable the community to identify site specific engineering concerns in the rural and forested areas of Barangay Napaan, as well as the more urban areas of Malay. 

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FLASH FLOOD DAMAGE AT LOCAL BRIDGE

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COMMUNITY WORKSHOP TO IDENTIFY AND ANALYZE CURRENT ISSUES AND FUTURE COURSE OF ACTION IN BARANGAY NAPAAN

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KAMAIGIN CREEK AND BARANGAY NAPAAN FLOOD ZONE

NAPAAN RIVER VALLEY LAND COVER

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PROPOSED INTERVENTION AT MARKET IN MALAY

A series of evaluations were made using hydrological modeling along the Napaan river.  Our initial research and modeling provided a better understanding of the underlying conditions that had caused the flash flood damages.  These initial studies framed the basic structure for a series of future science-based effective measures and interventions that could help mitigate flash floods. 

Beyond the community-led projects, UCRISP developed workshops, providing capacity building to the community and relevant stakeholders on sustainable  flood management strategies specific to the urban and peri urban areas of Malay and Barangay Napaan.

As a result of the community-led workshops, UCRISP identified a series of relevant issues affecting the community beyond Barangay Napaan, in the city of Malay.  Several graphic examples of potential nature-based solutions (NBS) were developed. The focus of these sample measures is an intervention at a local market that is heavily affected by annual flooding during the monsoon season.

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RUNOFF AT NAPAAN RIVER BASIN

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RESIST

MITIGATION STRATEGY ALONG NAPAAN RIVER

DELAY

MITIGATION STRATEGY ALONG KAMAIGIN CREEK

STORE

MITIGATION STRATEGY IN LOCAL AGRICULTURE FIELDS