| Abstrak/Abstract |
Lakes, water reservoirs, and ponds are sources of fresh water that support the life of all living beings as well as human's social and economic activities. A common problem on reservoirs in Indonesia is the siltation due to the discharge of river materials into the reservoir. This process of sedimentation declines the function of the reservoir. Total Suspended Solid (TSS) can be used as the indicator of sediment in the reservoir, which usually consists of silt, fine sand and microorganisms. The high concentration of TSS in the water column can be used as the indication that the process of sedimentation in the reservoir is also high. This study aims to 1) map the spatial distribution of TSS and 2) estimate the TSS contained in Wadaslintang Reservoir using Landsat 8 OLI. The algorithm of TSS for Wadaslintang Reservoir was created based on the empirical relationship between field TSS data and reflectance values. Based on this research, it was found that the ratio of red and green band produced the best correlation with the TSS (r = 0.533). The resultant regression function of the regression analysis between ratio of red and green band and field TSS data was used to model the spatial distribution of the TSS on Wadaslintang Reservoir with standard error of 10.8 mg/l. The average TSS in the reservoir is estimated to be 22.61 mg/l. |
