Which outcome occurred if ancient irrigation canals lacked regular dredging?

💡 Explanation

Sedimentation reduces canal flow because silt deposits accumulate, driven by reduced water velocity. This causes decreased irrigation efficiency and reduced agricultural yields; therefore this is the correct answer rather than wall instability happening quicker.

• Which control challenge resulted when seasonal rainfall variability impacted ancient Mesopotamian canals?
• During the Inca empire, which outcome occurred when Andean terrace farming relied excessively on diverting glacial meltwater?
• Which limitation restricted practical surveying using early medieval astrolabes, due to inherent trigonometric functions?
• During Byzantine-Venetian negotiations, which risk increased due to excessive concession?
• Which navigational inaccuracy increased dramatically when 18th-century ships used dead reckoning alone on longer voyages?
• Which outcome occurred when Byzantine silk production faced limitations in Bombyx mori cultivation circa 6th century CE?