Changes

Natural rock catchment and Open water reservoir

12 bytes removed, 05:14, 21 August 2013

→‎Construction, operations and maintenance

'''Specific advice''':

[[Image:RockCatchmentRoof.jpg|thumb|right|200px|Building a roof for the rock catchment dam to keep it clean and minimise evaporation losses.<br> Photo: [http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDcQFjAC&url=http%3A%2F%2Fwww.samsamwater.com%2Flibrary%2FBook1_Water_from_Rock_Outcrops.pdf&ei=Ys59T4_iLanM2gXA4NTlDA&usg=AFQjCNFY-XFDfUONAlG7HCp0p7Q4YDDOhw&sig2=UKAZc-rFHN-M4tfVsNOZGQ Water from Rock Outcrops.] DANIDA.]][[Image:RockPool.jpg|thumb|right|200px|A rock pool in near Taveta, Kenya.<br> Photo: [http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDcQFjAC&url=http%3A%2F%2Fwww.samsamwater.com%2Flibrary%2FBook1_Water_from_Rock_Outcrops.pdf&ei=Ys59T4_iLanM2gXA4NTlDA&usg=AFQjCNFY-XFDfUONAlG7HCp0p7Q4YDDOhw&sig2=UKAZc-rFHN-M4tfVsNOZGQ Water from Rock Outcrops.] DANIDA.]][[Image:MeasureRockGradient.jpg|thumb|right|200px|To measure the rock gradient, a spirit-level horizontal on a 100cm length of timber is used. This rock is determined to be too steep. <br> Photo: [http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDcQFjAC&url=http%3A%2F%2Fwww.samsamwater.com%2Flibrary%2FBook1_Water_from_Rock_Outcrops.pdf&ei=Ys59T4_iLanM2gXA4NTlDA&usg=AFQjCNFY-XFDfUONAlG7HCp0p7Q4YDDOhw&sig2=UKAZc-rFHN-M4tfVsNOZGQ Water from Rock Outcrops.] DANIDA.]]

In general, it seems that smaller scale dams owned privately might have more chance of success in terms of participation in the construction

and maintenance processes. However, using a self-help method of community organising, larger projects can also be successful.

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Winona

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