* Site where river is narrower, so that construction is cheaper.
{{procontable | proborder="1" cellpadding="5" cellspacing="0" align="center"|-! width="50%" style="background:#efefef;" | Advantages! style="background:#ffdead;" | Disadvantages|-| valign="top" | - Can assist recharge of shallow wells <br>
- Can reduce salinity in groundwater <br>
- Reduces velocity of water, which means less erosion & sediment transport <br>
- Since most of the sediment settles out behind the dam, water is free to infiltrate in a sediment-free area downstream. If the main
aim is to recharge groundwater, then leaky dams are preferred over gully bunds or check dams <br>
| convalign= "top" | - They can silt up and will need maintenance <br>
- Possible similar issue as with gully plugs, namely unclear land tenure can result in ownership of the structure <br>
- Can be expensive: a 5-step dam, 4.9 metres high, costs around $26,000 to construct<br>}|}
==Resilience to changes in the environment==