Development of Watershed Management Strategies for the Chiang-Chun River Basin, Taiwan

Abstract

The Chiang-Chun River basin is the largest and the most intensively used river basin in Tainan County, Taiwan. Based on the recent water quality analysis, the Chiang-Chun River is heavily polluted. Concern about the deteriorating condition of the river led the Government of Taiwan to amend the relevance legislations and strengthen the enforcement of the discharge regulations to effectively manage the river and control the pollution. Investigation results show that the hog farming is one particularly important activity in the watershed. Most of the untreated hog farm waste is indiscriminately discharged into the river. Moreover, municipal wastewater in the watershed is also discharged into the river without proper treatment. Thus, the hog farm and municipal wastewaters are the major causes of the deterioration of water quality of Chiang-Chun River. Currently, the percent of sewer system connection in the Chiang-Chun River watershed is less than 1%. Investigation results show that the daily wastewater, biochemical oxygen demand (BOD), and