Geology, Hydrology and Measurement of the Remaining Storage, Rate of Erosion and Siltation of Doma Drainage Basin North-central, Nigeria
| dc.contributor.author | Baba, Adama Oleka | |
| dc.contributor.author | Banyigyi, A.H. | |
| dc.contributor.author | Jatau, B.S. | |
| dc.date.accessioned | 2023-12-14T07:18:47Z | |
| dc.date.available | 2023-12-14T07:18:47Z | |
| dc.date.issued | 2020-09-16 | |
| dc.description.abstract | The Mada River Basin has a total area of 9,256 km2. Its head water is from the Jos- Plateau and it empties into the River Benue at the Eastern part of Loko, Nasarawa State. Doma Dam is at elevatio of 130msl. its embankment is bounded approximately by latitude 8 20 N and longitude 8 20N and longitude 8 20E. It was constructed in 1995. with original storage capacity of 37.5mcm. The Doma impounded reservoir has an active storage capacity of 28.5mcm and dead storage capacity of 9.0mcm. After 24 years of impoundment, continuous siltation caused by sediment is being deposited annually affecting its usefulness. To determine the volume of water available in the reservoir, there is need to study the reservoir’s bathymetry using boat, satellite navigator and metric tape with a weight attached to it. The study area is in the sedimentary environment of the central Benue Trough with different sedimentary formations. The formations have different lithostratigraphic sequence, thickness, age, sea movement and paleoenvironment. Rate of siltation between 1995 and 2019 in an area of2.615km2 is0.650km3/a with remaining depth of 12.912km (45%) of its original storage representing a 55% storage loss while rate of erosion was calculated to be 0.248mm/a. Volume of rainfall over the total dam drainage basin is 3,900km /a. Volume of total runoff is 936km3/a. Depth of evaporation from the open water table as of when the dam was constructed is 1.518km3 while as at present is 2.335km3/a because the area around the dam is flooded. Environmental minimum is 0.273knr7a. Assuming the leakage through the dam body is negligible, the water budget of the dam is positive with 10.304km3/a meaning there is active storage and safe yield although water demand of the study area is not known, if preventive measures are not taken, the dam will be completely silted up in some years from now. | en_US |
| dc.identifier.citation | Schoeneich, K. (2004): Water Budget for Basin Development Authorities. Paper presented at NMGS 40th Annual International Conference, in Maiduguri. Susona, B. V., and Afonso, M. P., (2002); Ecosystems in a changing environment. Proceeding of marine science. Udo, R. K. (1970): Geographical Regions of Nigeria. Heinemann, London, 212p. Walter, M.W., (1977): The Length of the Rainy Season in Nigeria. Agricultural Meteorology, v. Weyman (1975): Modification of Runoff Timing. In fide: Newson, M. (1997): Land, Water and Development: Sustainable Management of River Basin Systems 2nd Ed, P 80. World Bank (1993): Water Resources Management. A World Bank policy paper Washington D.C. Pp 1-141. Yono, B. and Qiang, B., (2019): Erosion and sand management: In subsea engineering handbook second edition. | en_US |
| dc.identifier.uri | https://keffi.nsuk.edu.ng/handle/20.500.14448/5686 | |
| dc.language.iso | en | en_US |
| dc.publisher | Department of Geology and Mining, Nasarawa State University Keffi | |
| dc.subject | Drainage basin, Environmental minimum, Erosion, Siltation, Storage capacity | en_US |
| dc.title | Geology, Hydrology and Measurement of the Remaining Storage, Rate of Erosion and Siltation of Doma Drainage Basin North-central, Nigeria | en_US |
| dc.type | Article | en_US |