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Water Portal / Rainwater Harvesting / Surface water / River-bottom intake

928 bytes added, 03:58, 18 April 2012

→‎Construction, operations and maintenance

* Adequate water cover must be provided all around the screen

 

====Maintenance====

A river-bottom intake is usually operated by a caretaker. The inlet must be checked regularly and obstructing debris removed and any damage repaired. The sand trap must be cleaned regularly. Preventive maintenance consists of painting the screens and other metal parts, such as sluices or valves. Depending on silt and bed load transport, the sand trap and screen will have to be cleaned regularly, and the screen or valve may need repairing. Any erosion undermining the structure must be repaired immediately. Every year, the concrete structure should be checked for cracks and repaired if needed. The water users may be required to help with annual cleaning and major repairs.

 

'''Potential problems'''

* Clogging by silt or debris

* Undermining by river currents

* The river or lake water may be polluted

* During the dry season, there may not be enough water in the river or stream to supply all users.

==Costs==

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Winona

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