**6. Conclusion**

This chapter reviewed different areas of application of remote sensing to river basin studies, with significant emphasis on and a case study in a part of Nigeria. The study used mainly an expository review and presented a case study. The chapter showed that huge potentials in some freely available remote sensing data in the developing country and considered that they are capable of bridging the gap of the coarse data. The case study presented was to indicate that decision support information can be generated from the freely available (only requiring downloading from the authorized archive) remote sensing data in many developing countries, where researchers have complained of significant data gaps. The review however warned that remote sensing data are prone to geometric and radiometric discrepancies that make them vulnerable to errors.
