I fully support the conclusions of Solomon Kibret and colleagues about the health impact of dams in the tropics, especially regarding diseases transmitted by mosquitoes and aquatic snails.
REF just published in Malaria Journal - Malar J. 2015; 14: 339. Published online 2015 Sep 4. doi: 10.1186/s12936-015-0873-2 PMCID: PMC4560078
The title is : Malaria impact of large dams in sub-Saharan Africa: maps, estimates and predictions
by Solomon Kibret,corresponding author and Jonathan Lautze, Matthew McCartney, G. Glenn Wilson, and Luxon Nhamo.
We published a book on the same subject in 1999, Dams and Disease, by Taylor & Francis Publishers. In that book we pointed out that there are proven ways to construct and operate such dams in the tropics to minimize malaria transmission. The methods were developed by the Tennessee Valley Authority in the southern USA, in cooperation with CDC and the US Public Health Service. Those dam engineers would gain a great deal by studying their 1947 book - Malaria in Impounded Waters - published by the US govt printing office.
The same water-level manipulations which were developed to control anopheline mosquito breeding in the TVA can be used to control the aquatic snails which transmit human schistosomes. Currently, research on the water level manipulations is being conducted by the El Tahir group at MIT.