Upon the organization of a district, the board shall make or cause to be made all examinations, surveys, plans and specifications, and estimates of costs for the acquisition, appropriation, diversion, storage, conservation, and distribution of water, any drainage or reclamation works connected therewith, and the generation of hydroelectric energy incident thereto, and the sale and distribution thereof, as may be necessary or requisite to enable the board to ascertain and estimate the requirements and works necessary for the purpose of the district, and the probable cost and to make a report.