21. The Aegean Sea catchment basin drains the Thracian Plain and most of the higher lands to the south and southwest. 22. The Gwydderig therefore forms part of the Towy's catchment basin and drains into the Bristol Channel at the Towy estuary. 23. Its eastern extension watershed between the catchment basins of China's two longest rivers, the Yangtze River and the Yellow River. 24. The project is structured by seven North-South green valleys that are called water catchment basin of the surrounding hills. 25. A network of channels known as Elivagar Flumina flow away from the crest of the crater into a catchment basin . 26. The catchment basin of the river receives water both from rainfall and from snow melt in the Cord�n Caulle plateau. 27. It began with channels in the flat surfaces, which were zigzag and contained catchment basins to control the water velocity. 28. Eocene flysch forms the southwest boundary of the catchment area, towards which the catchment basin drains and where the Ombla rises. 29. Basin models are used to more comprehensively evaluate total dissolved solids within a catchment basin and dynamically along various stream reaches. 30. The agency expropriated that land _ and gave residents other plots _ in order to secure the dam's watershed and catchment basin .
