1. Study on Hydrological Characteristics and Plant Nutrient Transported from each Region of Thailand 2. A study of Soil Erosion Risk in the Northeastern Region 3. The Effect of Landuse Agroforestry System on Hydrologic Cycle Characteristics and Soil Properties 4. Effect of Soil Conservation System as Hillside Ditch with Mixed Cropping among Banana and Arabica sp. upon Hydrologic Behavior at Ban Sado Phong Watershed, Khao Ko Sub-District 5. Water Balance of the Rain-fed Cultural Watersheds in the East 6. A study of Reservoir's Life and Possible Measures to Decline Sedimentary Rate of Small Reservoirs in the East 7. A Study on Hydrological Characteristics and Sediment Transportation from Different Landuse Pattern in Lang Suan Watershed, Chumporn Province 8. A Study on Hydrological Characteristics, Sediment Transportation and Nutrient Loss in Lang Suan Small Watershed Representative, Chumporn Province 9. A Study of Water Quality in the Saline Soil Watershed of Northeastern Region 10. The Assessment of Economic Life of Small Reservoirs under Different Land Use and Management 11. Factors Effected on Hydrological Characteristics of Rainfed Agricultural Watersheds in the East 12. The Effect of Conservation Practice on Soil Moisture of Agriculture Basin 13. Runoff estimate in Bang Pakong River Basin 14. Some Effecting Factors on Streamflow in Eastern Watersheds 15. Effect of Teak Plantation in Agroforestry System for Soil and Water Conservation and Watershed Rehabilitation 16. Integrated of Soil and Water Conservation Planning in Moungphlong Subwatershed, Amphoe Phanom Sarakham, Chachoengsal 17. The Estimate of Runoff in Ping Watersheds of Northern Region of Thailand