Aquatic plants serve the crucial function of helping to balance water reservoir ecosystem, as they filter and remove major minerals required for algal growth such as nitrogen, ammonia, and nitrates. Aquatic plants provide food, shade, and protection for the aquatic biome in and around the reservoir. Thus, it is important to accurately determine the existence and areal extent of the aquatic plants. In the present study drone-based facilities were used for this purpose. In the Muncheon water reservoir, Gyeongbuk, the Normalized Difference Vegetation Index (NDVI) and Surface Algal Bloom Index (SABI) were used to determine the existence status of the aquatic plants. The data so obtained exhibited reasonable accuracy; drone-based facilities can be used in future to identify the areal extent of aquatic plants.

Abstract
 1. 서 론
 2. 재료 및 방법
 3. 분석결과
 4. 결 론
 REFERENCES

• 이근상(전주비전대학교 지적토목학과) | Geun-Sang Lee (Cadasree & Civil Engineering, Vision College of Jeonju)
• 김성욱(지아이 지반정보연구소) | Sung-Wook Kim (Geo-information Institute, GI Co. Ltd.)
• 이길하(대구대학교 건설시스템공학과) | Khil-Ha Lee (Department of Civil Engineering, Daegu University) Corresponding author