Use stream of consciousness to answer the following. The river loses nearly two-thirds of its potential flow in the Inner Delta between Segou and Timbuktu to seepage and evaporation. All the water from the Bani River, which flows into the Delta at Mopti, does not compensate for the' losses'. The average' loss' is estimated at 31 km / year, but varies considerably between years. The river is then joined by various tributaries, but also loses more water to evaporation. The quantity of water entering Nigeria measured in Yola was estimated at 25 km / year before the 1980s and at 13.5 km / year during the 1980s. The most important tributary of the Niger in Nigeria is the Benue River which merges with the river at Lokoja in Nigeria. The total volume of tributaries in Nigeria is six times higher than the inflow into Nigeria, with a flow near the mouth of the river standing at 177.0 km / year before the 1980s and 147.3 km / year during the 1980s.

Answer this question based on the passage: where did river niger and river benue meet?
The important part for answering this question is: The most important tributary of the Niger in Nigeria is the Benue River which merges with the river at Lokoja in Nigeria. Final answer: at Lokoja in Nigeria.