Identification Of Irrigation Building in The Sangkir Garagahan Agam Regency for Agricultural Improvement
Keywords:irrigation, channel, primary, discharge, P3A
The increasing public demand for the quality of work provided by the government, both in physical form (buildings) and in non-physical forms (rules), is a consequence of changes in people's mindsets towards the pattern of government-community relations. Today's society is not only questioning whether or not their needs are met, but also questioning the quality of the buildings that have been carried out. Good building quality has a good impact on society. Irrigation buildings in the Sangkir Garagahan Irrigation Area were built in 2019, including primary and secondary canals that irrigate 1151 ha of rice fields located in 3 (three) nagari, namely Garagahan, Koto Tangah, and Manggopoh. This research is guided by the Irrigation Planning Standard KP-01, which is to determine the effective rainfall, and to analyze the water demand in the rice fields. Calculation of water availability using Manning's theory. By conducting a direct field survey of the Water-Using Farmers' Association and the Water Resources Service of the Bukittinggi Region, the existing condition of the canal was obtained before the construction was carried out. The intake discharge for the primary channel is 2100 liters/second, the discharge in the secondary channel for BBS V is 1300 liters/second. From the analysis of the available water discharge 8389 m3. The water discharge required for irrigation is 1795.75 m3. It is concluded that until 2027, irrigation buildings which exists still meet the water needs for rice fields.
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