Detailed Topographical And Hydrographical Survey Including Soil Investigation On Lower Bagjola Khal And Bb-1 Khal For A Approx Length Of 31.73 Km Consisting Of Survey And Preparation Of Maps, Plan, Cross Section And Long Section Within Block- Rajarha Wbiw/ee/mdd-i/e-nit-10/2025-26 /sl-1