Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States; School of Civil and Water Resources Engineering, Bahir Dar University, Bahir Dar, Ethiopia; Columbia University, Department of Ecology, Evolution and Environmental Biology, New York, United States; The Nature ConservancyVA, United States
Ayana, E.K., Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States, Columbia University, Department of Ecology, Evolution and Environmental Biology, New York, United States, The Nature ConservancyVA, United States; Worqlul, A.W., Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States, School of Civil and Water Resources Engineering, Bahir Dar University, Bahir Dar, Ethiopia; Steenhuis, T.S., Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States, School of Civil and Water Resources Engineering, Bahir Dar University, Bahir Dar, Ethiopia
Modeling of suspended sediment emission into freshwater lakes is challenging due to data gaps in developing countries. Existing models simulate sediment concentration at a gauging station upstream and none of these studies had modeled total suspended solids (TSS) emissions by inflowing rivers to freshwater lakes as there are no TSS measurements at the river mouth in the upper Blue Nile basin. In this study a 10. year TSS time series data generated from remotely sensed MODIS/Terra images using established empirical relationship is applied to calibrate and validate a hydrology model for Lake Tana in Upper Blue Nile Basin. The result showed that at a monthly time scale TSS at the river mouth can be replicated with Nash-Sutcliffe efficiency (NS) of 0.34 for calibration and 0.21 for validation periods. Percent bias (PBIAS) and ratio of the root-mean-square error to the standard deviation of measured data (RSR) are all within range. Given the inaccessibility and costliness to measure TSS at river mouths to a lake the results found here are considered useful for suspended sediment budget studies in water bodies of the basin. © 2015 Elsevier B.V.
Budget control; Developing countries; Lakes; Mean square error; Radiometers; Rivers; Sediments; Water; Water quality; Empirical relationships; Lake Tana; MODIS; Root mean square errors; Sediment concentration; Stream water quality; Total suspended solids; TSS; Suspended sediments; freshwater environment; lake water; MODIS; pollution monitoring; remote sensing; satellite imagery; streamwater; suspended sediment; Terra (satellite); time series; water quality; Article; catchment; Egypt; environmental monitoring; hydrology; image analysis; lake ecosystem; mathematical model; priority journal; satellite imagery; sediment; sensitivity analysis; stream (river); suspended particulate matter; validation process; water analysis; water flow; water quality; analysis; chemistry; lake; procedures; river; water pollutant; Blue Nile Basin; Ethiopia; Lake Tana; Nile Basin; water pollutant; Environmental Monitoring; Geologic Sediments; Hydrology; Lakes; Rivers; Satellite Imagery; Water Movements; Water Pollutants