Water Harvesting
In a recent paper,
Guttmann-Bond (2010), reviewed the extensive archaeological evidence for
rainwater harvesting systems, such as the artificial canals and underground
cisterns constructed by Prehistoric farmers of the Negev desert (c. 2000 years
ago).
Guttmann-Bone (2010, 358)
explains how two of these Prehistoric farms were reconstructed prior to the
most extreme drought ever recorded in
the Negev and whilst crops failed across the region, the reconstructed farm had
a good harvest.
Flood filling ancient
water cistern
http://www.flickr.com/photos/gropp/4215696571
Elsewhere in the Near East
modern Bedouin groups continue to use ancient cisterns and terraced fields
(terraces help to retain water). Recent surveys reveal that these structures
are found across Israel, Jordan and India but that most have fallen into
disrepair – should the cisterns be renovated it is estimated that they would
save 10-15% of water currently being lost (Ibid 358). This is not to suggest
that we should revert to old techniques: Guttman-Bond advocates integrating
these ancient systems with modern technology to produce new systems that are
even more effective.
It is important to realise
that traditional methods of rain harvesting need not be restricted to arid
climates. Indeed, forward thinking farms in the UK are beginning to implement
rain harvesting systems following the recommendations of the Environment
Agency
Ancient
terraced fields in the Levant
Above image sourced from Flickr (Author: apaame) under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Generic
http://www.flickr.com/photos/apaame/4626493943/in/photostream/