Whenever it appears necessary, proper or beneficial to irrigate any of the lands within any drainage district, whether or not the drainage works have been actually acquired or constructed, the district may cause irrigation reservoirs, canals, ditches, and other works to be constructed, operated and maintained. To this end the district shall in all respects have the same power and authority as is conferred respecting drainage, and all powers conferred upon drainage districts by ORS 547.305, 547.310, 547.355 and 547.360 with respect to drainage shall be construed to include irrigation. However, any bonds issued solely for irrigation purposes shall be known as 'Irrigation bonds of _____ drainage district.'
Oregon Legal Code