Investigation of the situation of the river system of Da'an River

Entrusting unit : Water Conservancy Planning Laboratory of Water Resources Administration
Location : Taichung County, Miaoli County
Programme Duration : 
    June 97 ~ May 98 of the Republic of China
Program Overview : 
    This plan will carry out the investigation of the situation of the Da'an River in Da'anxi, including basic data collection, river investigation (including river type, habitat survey, high beach survey, space use survey, river structure survey, flow survey, water quality survey, etc.), ecological survey (water and land area biological survey), database construction, river environmental management suggestions (precautions for river management, and precautions for ecological engineering planning and design). The river situation survey is based on the perspective of river environment and ecology, and conducts regular and continuous collection and investigation of basic data on river environment and ecology. The content of the assignment is first of all pre-investigation, that is, basic data collection and investigation. The on-site investigation plan is then drafted, including the selection of survey areas and survey techniques. After the on-site investigation, the results of the survey will be evaluated and conservation issues will be discussed, and finally a database will be established with the "Integrated Utilization Management System for River Situation Survey" of the Water Resources Department for subsequent inquiries.
    This project is a biennial continuation plan, and the survey of the main stream and tributaries (the main stream of Da'an Creek and the tributary Jingshan Creek) will be carried out in the first year; In the second year, the tributary parts (Mabihao Creek, Xueshankeng Creek, Wushikeng Creek, Guanyinkeng Creek) were investigated. The main stream of Da'an Creek originates from Dabajian Mountain in the Snow Mountain Range, with an altitude of about 3,488 meters, a basin area of about 758.47 square kilometers, and a main stream length of 95.76 kilometers. The basin covers Taichung County and Miaoli County, and flows through 11 townships and towns, namely: 5 townships in Miaoli County, including Tai'an Township, Zhuolan Township, Sanyi Township, Yuanli Township, and Dahu Township, and 6 townships in Taichung County, including Heping Township, Dongshi Township, Houli Township, Waipu Township, Dajia Township, and Daan Township.