In the report, Professor Mwalyosi said the power plant would represent an important national asset, though such a large net amount of energy would be realized on a short- to medium term basis. The power production can be negatively influenced by a variety of reservoir operation options that would be related mainly to irrigated agriculture, fisheries, and water quality, which form trade-offs with hydropower generation, says the ecology don.
This University of Dar es Salaam Professor said most devastating floods would also be reduced—from once in about 8 years to once in maybe 40 years, and this should well be understood by environmentalists who oppose the project without a prior knowledge about the project. According to him, the Stiegler Gorge Project impact area contains a major wildlife resource in terms of size, density, and diversity, and its accessibility to Dar es Salaam gives it a great potential for tourism development, and critiques of the project should look the report and read it in detail to enable them have objective view about the project.
Also, a substantial amount of the forest resources identified along this road could be exploited, says Professor Mwalyosi. According to this ecology professor, no complete populations of animal wildlife would be in danger from direct ecological consequences of river impoundment and dam construction. However, he says, significant proportions of the populations in the project impact area of three species Giraffe, Wildebeest, and Zebra would be potentially at risk, owing to their need for habitats of restricted range.
He says that on the other hand, some species, including Crocodile and Hippopotamus, would increase in numbers following creation of the reservoir and improvement of their habitat downstream of the dam due to swamp drainage. The report further says that river impoundment would have very negative impacts on floodplain fisheries and agriculture, the latter of which would probably be changed to irrigated agriculture with artificial fertilization, while floodplain fisheries would totally collapse.
According to professor Mwalyosi, Water quality in the planned reservoir and in the downstream area would be negatively affected by the project.
The project would also have negative effects on the health of the riparian population, owing to increased potentials for disease vectors. The project was found to have potential to produce 2,MW of power with three underground turbines. By , Tanzania needed 1.
Companies charging high capacity charges were seen as best option, instead of that planned hydro electric power. The power plant was to be constructed using Brazilian technology, and would generate excess power that could be exported to the east African and southern African power pools.
Masanja used to say that the plant would be a source of cheap, abundant energy at a cost of around 2 US cents of a dollar per kilowatt, but he never got support from relevant authorities, and one fails to know why.. According to him, the project would help control flooding in the Rufiji area and create a reservoir with a total capacity of 34 billion cubic metres to supply the commercial capital Dar es Salaam and other regions.
The fourth phase government considered to fund options for the project, including concessional loans, private investment or state financing and nothing was later reported about that development. It was reported that Brazil would provide the technology to build the plant, and a government delegation from Brazil came to Dar es Salaam for further discussions on the project.
The project was planned to involve the installation of three giant underground turbines, each with the capacity of producing megawatts of electricity. Most environmental impact assessments have so far showed the project would not affect the wildlife at the area.More...