It is essential that continual assessments of the impact of mine-derived water as a long-lasting burden on freshwater environments. Abundance-based evaluations of benthic macroinvertebrates have been conducted to evaluate anthropogenic disturbances and devise policies to reduce their impact. In this study, the status of a stream habitat was evaluated based on the body length and biomass weight of benthic macroinvertebrates of the family Baetidae. Following the renewal of the mining water treatment plant, the abundance of Baetidae assemblages recovered to a level comparable to that of a reference site. However, relatively low values were found for both body length and biomass weight in Baetidae species inhabiting the reddened streambed area, suggesting that the habitat has not yet been completely recovered despite the recovery of the abundance of the Baetidae assemblages. Therefore, continuous investigation and evaluation of this disturbed stream are necessary until their growth conditions of the habitat have functionally recovered

Abstract
INTRODUCTION
MATERIALS AND METHODS
    1. Ecological data
    2. Data analysis
RESULTS AND DISCUSSION
CONCLUSIONS
REFERENCES

• Mi-Jung Bae(Nakdonggang National Institute of Biological Resources)
• Hyeon-Jung Seong(Nakdonggang National Institute of Biological Resources)
• Seong-Nam Ham(Nakdonggang National Institute of Biological Resources)
• Eui-Jin Kim(Nakdonggang National Institute of Biological Resources) Corresponding author