Hamid Moslemi
Abstract
The flood water spreading is one of the suitable ways for the control and efficient use of flood water in arid and semiarid regions. By this way, the flood sediments are reused and soil fertility increased. The floodwater spreading is an suitable way to exploit deposits of nutrient-rich water that have ...
Read More
The flood water spreading is one of the suitable ways for the control and efficient use of flood water in arid and semiarid regions. By this way, the flood sediments are reused and soil fertility increased. The floodwater spreading is an suitable way to exploit deposits of nutrient-rich water that have some important uses include more fertile soil with nutrients supply. Floodwater spreading in the aquifer and sedimentation in surface soil cause large changes in soil characteristics on the surface and at the depth. This research is about Tigh Syah, Hashtbandi floodwater spreading network located in the 165 km in the South-east of Bandar Abbas on a shallow alluvial apron. In this plain, floodwater spreading plan began in 2005 with an area of 165 hectares. The purpose of this research was to study the changes in some features of the topsoil affected by floodwater and to compare its results with the control area. In this study three floodwater spreading network were implemented and in any network soil was sampled from 0-30 cm top soil and from three sections of upstream, middle and downstream of a control area. The study area was located in Tigh Syah in Hashtbandi, Hormozgan Province. For measuring changes on soil properties, 20 samples were selected from inside and outside of the station. The results were analyzed in a completely randomized design. Results of t test, showed that the average percentage of clay, silt, soil saturation moisture, organic carbon and electrical conductivity, total N, phosphorus and potassium were increased at the level of %1 (P≤ 0.01). Results also indicated that electrical conductivity and sand and pH were decreased (P≤ 0.01) in flood spreading area compared to control site. The results of this research indicates that in general, soil condition improves by floodwater spreading as a positive operation.
hamid moslemi; alijan abkar; saeid choopani
Abstract
In general, the protection and utilization of surface water in arid regions, done by different methods such as Flood water spreading that undoubtedly will affect on sustainable development of groundwater resources. In order to provide, suitable, executive and manageable solution, Continuous monitoring ...
Read More
In general, the protection and utilization of surface water in arid regions, done by different methods such as Flood water spreading that undoubtedly will affect on sustainable development of groundwater resources. In order to provide, suitable, executive and manageable solution, Continuous monitoring is essential for such projects. For this reason the effect of Dehender Flood spreading on downstream unconfined aquifer was evaluated. For this purpose, the location of flood spreading and hydrogeological conditions of downstream aquifer determined by data and information that are Gathered from Hormozgan regional water authority along with field observations. Then 7 Observation wells were chosen. Finally, the effect of flood water spreading on water table surface groundwater changes was investigated by using underground water balance equation and unit hydrograph befor and after the construction of flood spreading system. The results of this evaluation showed that the average level of the water from sea level at the central of the plain(are not affected by flood water spreading) and near flood spreading (are affected by flood water spreading respectively) befor and after the construction of flood spreading system are: 213.4 ,209.5 and 254 ,251 meter of the sea level. As a result we can state that flood water spreading play an important role in sustainable development of ground water resources.
