There are two ways to check whether the land is located within the river reservation zone: first, people can bring the cadastral map to the Section of Hydraulic Maintenance Engineering, Water Resources, Taoyuan City inquiries, or second, in order to improve the convenience for citizens of making inquiries into the regional line of rivers and creeks and the control plan line, the Taoyuan City Government has launched the online application services at https://e-services.tycg.gov.tw, where the applicant selects Online Application, and clicks Section of Hydraulic Maintenance Engineering, and then selects Inquiries into the Regional Line of Rivers and Creeks and Control Plan Line, and then fills out the website form and clicks Submit to complete the application.