All the water quality monitoring data about the upper Shintan Creek, including pei-chih creek and nan-chih creek, which performed by governmental agency, have bee collected and analyzed in this project. Beside, we also performed the investigation of nonpoint pollution from stormwater and guidance the farmer to eliminate nonpoint pollution by BMP’S. The measures we used to analyze data including, temporal and spatial comparison of upstream and downstream monitoring sites, water quality achievement rate, box plot of monitoring results, etc., among all the parameters the E coli. is the most frequently parameter which cannot meet the A class water quality standard. In general, weather condition is the major factor affects the monitoring results most. We also make a suggestion about the regulations to control nonpoint pollution discharge, the stormwater management program adopted by NPDES US EPA seems to be one of the best methods we can introduce and implement here. An “Implemental manual for reduction of agriculture pollution-farmers’ edition” and a “Manual for reduction of pollution caused by recreational activities” have been written. Aside from these, a workshop was held to discuss about the control techniques of agricultural pollution. Based upon the suggestions in the workshop, the manual of farmers’ edition was revised. Then three classes of educational promotion and promulgation were held to instruct the tea farmers about the reduction of agricultural pollution. Among the three classes, two were at Pinglin and one at Shihding.

Watershed management, Storm water Pollution investigation, Pollution elimination