PEMETAAN KONDISI FISIK JARINGAN IRIGASI DESA RASI RAYA KECAMATAN RATAHAN KABUPATEN MINAHASA TENGGARA BERBASIS SISTEM INFORMASI GEOGRAFIS

Abstract

ABTRACT

The Lahendong Irrigation Network is located in Rasi Raya Village Ratahan
Subdistrict Southeast Minahasa Regency, which was established in 1971. In December 2013,
damage to buildings and channels in the irrigation network. This research aims to make a
map of physical conditions in the village of Rasi Raya, Ratahan District, Southeast Minahasa
Regency, based on geographic information systems. This research was conducted in July
2019-October 2019. The method is used in this research is imagery by using analysis from
GIS Software and measurements of the field. Lahendong Irrigation Network is geographically
at 0°59'19.34"N-1°05'1.61"N (north latitude) and 124°44'27.66 "E-124°47'08.29"E (east
longitude) altitude 225 – 340 meters above sea level, has an irigation network condition index
of 77.22% with an infrastructure weight of 34.75 out of a maximum value of 45, so periodic
and routine maintenance was needed. The Lahendong Irrigation Network has an area of
95.80 hectare and a channel of 9868 meters. Irrigation efficiency in the Lahendong Irrigation
Network is 51.69% and water loss in the channel is 0.05 m3

/second and evaporation is 3308
mm/day. Lahendong Irrigation Network is presented in a spatial form namely Map of
Lahendong Irrigation Network.
Keywords : Physical Condition of Irigattion Network,Geographic Information System