Geospatial Analysis and Turbidity Measurement for Monitoring Suspended Solid of Hitotsuse Dam in Miyazaki Prefecture, Kyushu, Japan

Purnama Budi Santosa, Yasuhiro Mitani



The existence of suspended solids at Hitotsuse dam, Miyazaki Prefecture, Kyushu, Japan, has been the main concern of Kyushu Electric Power Company. These have been carried by rivers flowing into the dam. In a long term, it is worried that this phenomenon will potentially cause the environmental degradation, especially around the dam, where the Kyushu Electric Power Plant is located. Therefore, necessary measures are required to protect the dam from environmental degradation, which in return is to assure its long term power plant operational. Preliminary studies found that the suspended solid, which was generated upstreams and was carried out into the dam by rivers, causes the turbid water resident. Therefore, evaluation on the potential sources of the existence of the suspended solids needs to be carried out. In this research, analysis was conducted to understand the spatial distribution and the quantity of the suspended solid. For this purpose, by focusing attention on the upper river basin of reservoir, several factors which are possible to cause turbid water are extracted and analyzed quantitatively by using GIS. To understand the characteristic of the river turbidity, river flows and river turbidity are measured at several selected stations. Then mechanical factors causing turbid water are identified after analyzing relationship between efflux characteristics and possible factors of suspended solids. The results show that spatial information extraction could be done efficiently by applying spatial analysis method. Furthermore, by applying multiple regression analysis, it was found that landslide scars, artificial forests, drainage area, and terrain undulation are indicated as the dominant factors causing the turbidity.


GIS, river turbidity, suspended solids, hydrology, watershed

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Ahearn, D.S., Sheibley, R.S., Dahlgren, R.A., Anderson, M., Jonson, J., and Tate, K.W. (2005). Land use and land cover influence on water quality in the last free-flowing river draining the western Sierra Nevada, California. Journal of Hydrology, 313, 234–247.

Bustamante, J., Pacios, F., Dı´az-Delgado, R. and Aragone´s, D. (2008). Predictive models of turbidity and water depth in the Do~nana marshes using Landsat TM and ETMt images. Journal of Environmental Management, 1e7

Chen, Z., Hu, C., Muller-Karger, F. (2007). Monitoring turbidity in Tampa Bay using MODIS/Aqua 250-m imagery. Remote Sensing of Environment 109 (2007) 207–220.

Chikita, K. and Okumura, Y. (1990). Dynamics of turbidity current measured in Katsurazawa reservoir, Hokkaido, Japan. Journal of Hydrology, 117 (1990) 323-338 323

Foltza, R. B., Yanoseka, K. A. and Brownb, T. M. (2007). Sediment concentration and turbidity changes during culvert removals. Journal of Environmental Management, doi:10.1016/j.jenvman.2007.01.047

Heyes, A., Miller, C., & Mason, R. P. (2004). Mercury and methylmercury in Hudson River sediment: Impact of tidal re-suspension on partitioning and methylation. Marine Chemistry, 90(1–4), 75−89.

Hill, A.R. (1981). Stream phosphorus exports from watersheds with contrasting land uses in southern Ontario. Water Resources Bulletin, 17, 627–634.

Lawler, D. M., Petts, G. E., Foster I. D. L., and Harper, S. (2006). Turbidity dynamics during spring storm events in an urban headwater river system: The Upper Tame, West Midlands, UK. Science of the Total Environment, 360 (2006) 109– 126

Li, S., Xu, Z., Cheng, X., and Zhang, Q. (2008). Dissolved trace elements and heavy metals in the Danjiangkou Reservoir, China. Environmental Geology. doi:10.1007/s00254-007- 1047-5.

Ngoye, E., and Machiwa, J.F. (2004). The influence of land use patterns in the Ruvu river watershed on water quality in the river system. Physics and Chemistry of the Earth 29, 1161–1166.

Pavanelli, D. and Bigi, A. (2005). A new indirect method to estimate suspended sediment concentration in a river monitoring program. Biosystems Engineering (2005) 92 (4), 513–520.

Pirmeza, C. and Imran, J. (2003). Reconstruction of turbidity currents in Amazon Channel. Marine and Petroleum Geology, 20 (2003) 823–849

Sliva, L., and Williams, D. D. (2001). Buffer zone versus whole catchment approaches to studying land use impact on river water quality. Water Research, 35, 3462–3472.

Smart, R.P., Soulsby, C., Neal, C., Wade, A., Cresser, M.S., Billett, M.F., Langan, S.J., Edwards, A.C., Jarvie, H.P., and

Owen, R. (1998). Factors regulating the spatial and temporal distribution of solute concentrations in a major river system in NE Scotland. The Science of the Total Environment, 221, 93–110.

Stech1, J., Alcântara1, E., Novo1, E., Shimabukuro1, Y. and Barbosa, C. (2007). Turbidity in the Amazon floodplain assessed through a spatial regression model applied to fraction images derived from MODIS/Terra. IEEE. Downloaded on October 5, 2008 at 22:50 from IEEE Xplore.

Susfalk, R. B., Fitzgerald, B. and Knust, A. M. (2008). Characterization of Turbidity and Total Suspended Solids in the Upper Carson River, Nevada. DHS Publication No. 41242, January 2008.

Turner, R.E., Rabalais, N.N. (2003). Linking landscape and water quality in the Mississippi River Basin for 200 years. Bioscience, 53, 563–572.

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