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Natural rock catchment and Open water reservoir

No change in size, 18:53, 5 April 2012
→‎Construction, operations and maintenance
====Preconstruction====
* Water can be stored as an open reservoir – this can be done behind a stone masonry or concrete dam built directly onto the rock, or behindan earth dam in a non-rocky area at the base of the rock face. Water can also be stored in a covered tank that gets water directly from the rock catchment.
* Gutters are needed to direct water on the rock catchment towards the reservoir. They can be made from stone masonry using rocks gathered from the catchment during cleaning. Gutters should almost follow the contour but should slope a minimum of 3%. Gutters should be high enough to direct water, but where runoff velocity is very high, some kind of wall structure is needed to slow velocity of runoff before it reaches the gutters.
Winona
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