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沙坝
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- 河岸植被再生 <br>
- 沙坝通常对河水下游的流量影响较小（少于10%的径流） <br>
- Better water quality than surface water dams: protects the water against evaporation, animal contamination and insect & bacteria breeding.相较于普通的地面水坝，沙坝能使水质更好：能防止水分蒸发，动物污染及昆虫和细菌繁殖 <br>- Sand deposits can be collected and sold for extra income.沉积沙可以收集起来出售，获取额外收入 <br>- Long lifespan if maintained correctly. 若适当维护沙坝，则使用寿命长若适当维护沙坝，则使用寿命较长
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- Site-specific technology – not suitable everywhere.这一技术适用于特定场地——并非适用于所有地点 <br>- External expert knowledge needed 需要外界提供专业知识<br>- Labour intensive construction 劳动密集型的建造<br>- Although cost per volume is cheap, the actual structure that needs to be made is expensive.虽然每容积的造价不高，但实际需要的建造物价格昂贵 <br>- If dam is built in stages, it can be difficult for the community to show up next season for the next stage of work.如果建坝分阶段进行，社区难以确定下一季工作的阶段如果建坝分阶段进行，社区可能难以确定下一季工作的阶段<br>- Must rebuild if the river changes course 如果河道更改，则必须重建<br>- The possible dam construction sites may be too far from the water users 能够建坝的地点可能会离需要用水的人太远<br>- In Kenya, experience shows that up to 80% of dams might not be functioning as they should due to poor design. 在肯尼亚，根据经验，因设计不当，多达80%的水坝可能无法运作的水坝可能未按应运作的方式运行<br>
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