Workshop 1: Artificial Recharge of Groundwater
October 28, 2007
This workshop will be taught by David Pyne and Herman Bouwer. Click here to download a more detailed description of this workshop, including a course outline.
This course discusses recharge processes (natural, incidental, enhanced, induced,
artificial), systems for artificial recharge, (surface basins, vadose zone trenches or shafts, wells),
and the physics of infiltration of water into soil. We will also examine measuring infiltration rates for recharge system design, formation of
clogging layers at the infiltrating surface, flow through the vadose zone, development of perched groundwater,
groundwater mounding, water sources, including sewage effluent, soil-aquifer treatment processes, role of
recharge in water reuse, use of floodwaters for recharge, and pretreatment of water. Well recharge will also
be discussed, including types, objectives, and sources of water for well recharge systems. We will also cover the planning, design, operation, and management phases of
artificial recharge systems. Principles will be illustrated with practical examples. Topics include how to:
- Select sites for artificial recharge
- Select the best system
- Predict infiltration rates and hydraulic capacities
- Predict effects of water depth in basins and groundwater levels on infiltration rates
- Predict perched and ground water mounding
- Use pilot systems
- Design large scale systems
- Manage clogging in surface systems and wells
- Design and manage recharge systems for soil-aquifer treatment and water reuse
- Design and manage aquifer storage recovery wells
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