Traditional hand-dug wells

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History and social context

Suitable conditions (advantages / disadvantages)

Advantages Disadvantages/limitations
Circumstances which make the construction of large diameter wells necessary:

i. inability to obtain or maintain pumps or special buckets necessary for small diameter wells

ii. desire to use some type of water raising system requiring more space than is available in a small diameter well (e.g. continuous chain and buckets)

iii. desire to improve or repair existing large diameter wells. iv. necessity of storing water where the aquifer is of extremely low permeability v. low cost labour is available

vi. local skills are available.

- greater effort and longer construction time

- greater safety hazards during and after construction
- difficulty in preventing contamination
- generally lower rate of inflow for the effort involved.


Technical specification

Operation

Maintenance

Manufacturing

Cost

Country experiences

Manuals

An excellent guide to a relatively safe method of digging hand dug wells can be found at: Consallen

Movies

External links

An excellent but slightly outdated summary of hund dug wells by Koegel is made available by the UN FAO at Large Diameter Wells
An excellent guide by the highly experienced British Drilling Company can be found at Consallen

References