Table 1. Summary of weekly anopheline larval sampling from 12 experimental dams in Koka area, Central Ethiopia, during the main malaria transmission (October-November 2013) and dry (February-March 2014) seasons.

Water drawdown rate	Group 1 (control)	Group 2 (10 mm.day-1)	Group 3 (15 mm.d-1)	Group 4 (20 mm.d-1)	Total (%)
Main malaria transmission season (%)	78 (43)	56 (31)	28 (16)	18 (10)	180 (63)
Dry season (%)	51 (49)	29 (28)	16 (15)	8 (8)	104 (37)
Total (%)	129 (45)	85 (30)	44 (15)	26 (9)	284 (100)