Changes

Jump to: navigation, search

Riverbed hand-dug wells

175 bytes added, 03:20, 17 July 2012
no edit summary
# In areas where there are no high banks and where maximum floodwater height is lower than these banks – this is so that suction pumps can still operate (effectively will abstract water between 6 – 7 metres height).
 {{procontable | proborder="1" cellpadding="5" cellspacing="0" align="center"|-! width="50%" style="background:#efefef;" | Advantages! style="background:#ffdead;" | Disadvantages|-| valign="top" | - Taps water in riverbed rather than through riverbanks (if very defined aquifer where water is confined to riverbed) <br>
- Lower cost than making a lined well in the riverbank due to less lining needed <br>
- Speedier construction and lower cost compared to fully lined well <br>
- Safer to construct due to fewer hazards compared to deeper wells.<br>
| convalign= "top" | - Contamination possibility of water due to limited filtration depth between surface water to intake. <br>
- Can be difficult to sink to required depth especially in areas of flowing sand.
|}} 
==Resilience to changes in the environment==
Winona
Akvopedia-spade, akvouser, bureaucrat, emailconfirmed, staff, susana-working-group-1, susana-working-group-10, susana-working-group-11, susana-working-group-12, susana-working-group-2, susana-working-group-3, susana-working-group-4, susana-working-group-5, susana-working-group-6, susana-working-group-7, susana-working-group-8, susana-working-group-9, susana-working-group-susana-member, administrator, widget editor
30,949
edits
Retrieved from "https://akvopedia.org/wiki/Special:MobileDiff/12493"

Navigation menu