Which of the following sources of water is least useful for irrigation purposes? by Sunday | Jun 12 | Agricultural Science WAEC | 0 comments A. sea B. river C. lake D. borehole Correct Answer: Option A – sea Users Also Read These:Which of these sources of water may likely contain…SS2 Lesson Note on the Irrigation System: Meaning;…Which of the following methods of irrigation is most…ABE 101 Theory Questions: Irrigation vs Drainage:…Water waves have a wavelength of 3.6cm and speed of…