Overflow areas around water tanks—often overlooked or dismissed as nuisance wet spots—are actually vital microhabitats that support diverse communities of plants, insects, and microorganisms. The Neftaly Water Tank Overflow Biodiversity Patches project uncovers how these damp zones act as urban refuges for biodiversity, enhancing ecological networks in human-dominated landscapes.
What Are Overflow Biodiversity Patches?
When water tanks release excess water, overflow creates consistently moist patches on the ground or surrounding surfaces. These patches:
- Support moisture-loving plants like mosses, ferns, and wildflowers
- Provide breeding grounds and habitats for insects, amphibians, and small invertebrates
- Encourage growth of microbial communities essential for nutrient cycling
- Act as natural water filtration and soil stabilization zones
Why They Matter
Overflow biodiversity patches contribute to urban ecosystems by:
- Offering oases for wildlife in dry or paved environments
- Enhancing local biodiversity and ecosystem services
- Helping manage stormwater and reduce erosion naturally
- Creating stepping stones for species movement across urban areas
- Providing educational opportunities about urban water cycles and ecology
Neftaly’s Work on Overflow Biodiversity
Our initiatives include:
- Mapping and monitoring biodiversity patches around water tanks
- Studying species composition and ecological functions of overflow zones
- Collaborating with water managers and urban planners to protect these habitats
- Promoting community engagement through citizen science and educational programs
- Developing guidelines for low-impact maintenance of water tank sites
How You Can Get Involved
- Observe and document biodiversity around local water tanks
- Support green infrastructure projects that incorporate overflow habitat conservation
- Participate in Neftaly’s Urban Wet Zone Survey
- Advocate for policies recognizing the ecological value of water infrastructure zones
- Educate your community about urban water biodiversity


