Smaller scale dams owned privately might have more chance of success in terms of participation in the construction and maintenance processes.
{{procontable | proborder="1" cellpadding="5" cellspacing="0" align="center"|-! width="50%" style="background:#efefef;" | Advantages! style="background:#ffdead;" | Disadvantages|-| valign="top" | - High runoff coefficient is good, enabling water to collect very well from small rains <br>
- Minimal seepage where open storage on rock catchments is concerned <br>
- Maintenance is simple and cheap if conditions are right <br>
- Rock catchments do not occupy farmland and often no one owns the land = easy to implement <br>
- Good sized reservoirs can eliminate the need for further excavation, if water needs increase in the future <br>| convalign= "top" | - Contamination of the water from surrounding land use and animals <br>
- Water-borne disease susceptibility <br>
- Can be eroded or destroyed by cars, groups of people or animals crossing over them <br>
- Depth to surface ratio must be small otherwise evaporation is a great loss <br>
- The geology and surrounding populations must be suitable for a reservoir <br>
|}}
==Resilience to changes in the environment==