Sedimentation Analysis in the Cihaur Irrigation Channel, Cilacap Regency, Central Java.
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| Title: | Sedimentation Analysis in the Cihaur Irrigation Channel, Cilacap Regency, Central Java. |
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| Authors: | Fauzan, Rifqi, Rifki, Dega Muchamad, Abdurohman, Salim, P., Sulistijo Edhy |
| Source: | International Journal of Social Service & Research (IJSSR); Aug2025, Vol. 5 Issue 8, p1040-1054, 15p |
| Subject Terms: | SEDIMENTATION & deposition, IRRIGATION, SEDIMENT control, FARMS, SOIL conservation, WATER management, WATER efficiency |
| Geographic Terms: | JAWA Tengah (Indonesia) |
| Abstract: | This research analyzes sedimentation in the Cihaur irrigation canal within the Manganti Irrigation Area (D.I. Manganti), Cilacap Regency, which services 700 hectares of agricultural land out of a total of 26,153 hectares. The study examines how sedimentation impacts the capacity and efficiency of the 22.62 km long canal. Factors contributing to sedimentation, based on Sasrodarsono's theory (1989), include erosion areas, geological and topographical conditions, meteorological factors (particularly high rainfall intensity), hydraulic characteristics (flow rate of 136.524 m³/second), vegetation, and human activities within the Citanduy River Basin (DAS Citanduy). The impacts of sedimentation include reduced canal capacity, decreased hydraulic efficiency, and increased maintenance costs. Using a descriptive analytical quantitative approach, the study incorporates discharge measurements, sedimentation volume analysis (20.405 m³/second), granulometric analysis (dominated by fine sand and silt with 58% silt content), and water content analysis (86% for settled sediment and 292% for floating sediment). Correlation analysis indicates that high rainfall intensifies sedimentation. Results reveal significant reductions in irrigation efficiency, such as a decrease in flow in the Simpellu I primary canal from 136.524 m³/second to 116.119 m³/second. Proposed solutions include sediment dredging, canal normalization, upstream erosion control (e.g., reforestation, terracing), construction of sediment control structures (e.g., sediment traps, settling ponds, check dams), routine cleaning and maintenance, and active farmer participation. Limitations of the study include the absence of long-term historical data and a narrow focus limited to the Cihaur irrigation canal. [ABSTRACT FROM AUTHOR] |
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| Database: | Complementary Index |
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