Abstract
During this research, it was verified that small dams play an important role in groundwater sustainability and agriculture. The main objective of this study was to assess the impacts of the Wadi Tendahah dam on groundwater and agriculture. Proper planning and management of small dams may improve sustainable agriculture in the Tendahah region. The study also found that the construction of the Tendahah Valley Dam on an impermeable rock layer had a major role in the lack of groundwater recharge, especially in the dry seasons, and this, in turn, affected agriculture in its study area. Given the positive and negative impacts of the Tendahah Valley Dam or similar, the appropriate place for the construction and maintenance of small dams should be chosen periodically.
Highlights
There is no specific date for the beginning of the construction of dams, but it is believed that they date back more than 5000 years, but most of the dams in the world came after World War II with the aim of economic development (Zarfl et al, 2014)
The study found that the construction of the Tendahah Valley Dam on an impermeable rock layer had a major role in the lack of groundwater recharge, especially in the dry seasons, and this, in turn, affected agriculture in its study area
In light of the increasing issues of water scarcity in the Kingdom and the face of decreasing amounts of annual precipitation, and its increasing water needs every day, we find that small dams play an important role in the sustainability of groundwater and agriculture
Summary
There is no specific date for the beginning of the construction of dams, but it is believed that they date back more than 5000 years, but most of the dams in the world came after World War II with the aim of economic development (Zarfl et al, 2014). Dams are among the most harmful human activities in permanent river basins. Dry, which modifies the geography of watersheds. The reservoirs may look a lot like natural lakes. The operating system defined by the purpose of the reservoirs may significantly alter their physicochemical character and biological responses. Reservoirs undergo major changes in water quality
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