Kusumastuti, Dyah Indriana and Jokowinarno, Dwi (2018) CALIBRATION OF IRRIGATION GATES IN PUNGGUR UTARA IRRIGATION AREA. In: 21st Congress of IAHR-APD, 2-5 September 2018, Yogyakarta, Indonesia.

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Abstract

Sekampung irrigation system consists of seven irrigation areas, which are supported by two feeder canals. Feeder Canal I serves Sekampung Bunut, Sekampung Batanghari, Raman Utara, and Batanghari Utara irrigation areas. Feeder Canal II serves Punggur Utara, Bekri and Rumbia irrigation areas. Land use, climate and social economic changes impact on supply and demand of irrigation in Sekampung Irrigation System. Significant decrease of discharge of Sekampung river impacts on discharge for irrigation released from Argoguruh Weir. As a result, distribution and irrigation efficiencies decrease. In order to improve operational of water distribution it needs to calibrate irrigation gates so that gate coefficient (Cd) for each gate can be determined. Research method for gate calibration includes measuring discharges and corresponding elevations in the canal for various opening gates. Procedure for measuring discharge in irrigation canals used the national standard procedure for measuring discharge in open channel using current meter as written in SNI 8066:2015. Analysis used includes constructing rating curves, comparing the observed rating curves to the empiric ones, and calculating the gate coefficients and presenting the discharge table for each calibrated gate. Results from calibrating 425 gates show that the percentage of the number of gates having Cd between 0.4 and 1 is 61.224%, less than 0.4 is 21.089% and greater than 1 is 17.687%. This result will be useful for water managers to control water distribution as well as do the appropriate operation and management for Punggur Utara irrigation area.Sekampung irrigation system consists of seven irrigation areas, which are supported by two feeder canals. Feeder Canal I serves Sekampung Bunut, Sekampung Batanghari, Raman Utara, and Batanghari Utara irrigation areas. Feeder Canal II serves Punggur Utara, Bekri and Rumbia irrigation areas. Land use, climate and social economic changes impact on supply and demand of irrigation in Sekampung Irrigation System. Significant decrease of discharge of Sekampung river impacts on discharge for irrigation released from Argoguruh Weir. As a result, distribution and irrigation efficiencies decrease. In order to improve operational of water distribution it needs to calibrate irrigation gates so that gate coefficient (Cd) for each gate can be determined. Research method for gate calibration includes measuring discharges and corresponding elevations in the canal for various opening gates. Procedure for measuring discharge in irrigation canals used the national standard procedure for measuring discharge in open channel using current meter as written in SNI 8066:2015. Analysis used includes constructing rating curves, comparing the observed rating curves to the empiric ones, and calculating the gate coefficients and presenting the discharge table for each calibrated gate. Results from calibrating 425 gates show that the percentage of the number of gates having Cd between 0.4 and 1 is 61.224%, less than 0.4 is 21.089% and greater than 1 is 17.687%. This result will be useful for water managers to control water distribution as well as do the appropriate operation and management for Punggur Utara irrigation area.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik (FT) > Prodi Teknik Sipil
Depositing User: DYAH INDRI
Date Deposited: 16 Nov 2018 17:33
Last Modified: 16 Nov 2018 17:33
URI: http://repository.lppm.unila.ac.id/id/eprint/10160

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