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10th International Rainwater Catchment Systems Conference
"Rainwater International 2001"
Mannheim, Germany - September 2001

Section 2: Rainwater Catchment in Humid and Arid Regions

Paper 2.4

Post-evaluation of a Rainwater Harvesting Project

Sha Lusheng, Li Huilong, Wang Yongsheng, Zhang Hongtao
Yangzhou University


Because of aridity, the loess plateau in northwest China, the massif areas in north China, the karst mountain areas in southwest China as well as China's coastal areas are lacking water resources. The total water-deficient area is about 2 million km2 with a population of 260 million. The cultivated land encompasses 26 million ha and 34.2 million people are short of drinking water.

As a small-size water conservancy installation, rainwater storage and harvesting facilities are a simple, low-cost and effective way to solve the water problem. It is evident that the development of such facilities is important for people living in water-deficient areas. to improve their production and living conditions.

Rainwater utilization has a long history in China and since the 1980s it has been developed rapidly all over the country. According to incomplete figures, more than 4.64 million small and mini-sized rainwater storage facilities, including various cisterns and ponds, have been built. Every year 1.35 billion m3 rainwater were stored, providing potable water for nearly 24 million people and 17 million livestock. At the same time more than 1.5 million ha farmland has been brought under irrigation. The benefit is remarkable.

This evaluation will be carried out looking at the rainwater harvesting facilities and their influence on solving the shortage of drinking water in the countryside. We also want to point out the success of the project: promoting the local economy and social development, as well as taking a look at the existing problems, thus providing an objective and scientific basis for a demand analysis and a plan for future projects.

PDF of full document (3pp, 22kb)

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