NandiasaJ., and SanjayaR. “valuation of rainage hannels on abuaran oad ibinong istrict of ogor egency”. JTI nternational ournal of ransportation and nfrastructure ISSN 2597-4769 ISSN 2597-4734, ol. 4, no. 1, Sept. 2020, pp. 22 -35, doi:10.29138/ijti.v4i1.1162.