Compléter Irrigation Version en ligne Irrigation game for the Magrath Museum par Alyssa Doig 1 1899 Magrath Pothole Galt Dam slipscrape St A Mary's Ora Elliot T Card Dam C Charles Magrath was established in . The three main men responsible for irrigation in Magrath were . , , and . . . A was the primary tool for digging canals . Later the irrigation project included the building of reservoirs . The Jensen's reservoir was originally named the , but was later changed . The Jensen's Dam was built before the . .