Page 232 - Çevre Şehir ve İklim Dergisi İngilizce - Özel Sayı

Rainwater Harvesting Studies Across The World and Türkye

1.3. Technical Details of Floodwater Harvesting

Floodwater harvesting method aims to harvest irregular and seasonal
water stream. In this method, the excess water is removed in a controlled
manner to be collected in a pond, a reservoir or soil. Floodwater harvesting is
used to mitigate the damage caused by sudden overflows as well as offering
additional benefits like providing soil moisture required for plant production
and recharging groundwater.
It is stated that the method is usually applied in regions with precipitation
of less than 300 mm. However, it is also emphasized that in areas where water
can be stored, this value must be over 150 mm (Prinz, 2001; Oweis et al., 2001).
Floodwater harvest applications include the Jessour technique, the distribution
of the water in the river bed and the re-direction of floodwater (Figure 2).

Figure 2. An example to floodwater harvesting (Beckers et al., 2013)

1.4. Technical Details of Roof Surface Water Harvesting

This method involves the redirection of the rainwater accumulated on
building roofs to a storage tank (Figure 4). The storage tank is designed
according to the need for water, the amount of precipitation and the features
of the basin. Each drainage pipe is equipped with a mesh filter and a filtration

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