The flow contribution from the Lugenda River to the Ruvuma River is estimated to be . Most of the basin area of the river lies in the Niassa Province where the irrigation potential is reported to be . It is a slow-moving river and often appears, as it emerges from the Lake Amaramba, as a lake due to its large expanse of water. The river valley has fertile alluvial soil with good water resources as it is fed by many perennial streams on both banks. The perennial water sources in the valley thus have good cultivation to sustain its inhabitants. Tobacco is grown on the river banks. Wild fig and other species of trees are also found in the valley. The river is bridged at Luambala where its width is about . The river valley formed by the Lugenda River, which flows within deep banks, is rich in iron ore intercalated in quartz and granite rock formations. Crystallized lime carbonate is also found. Coal is extracted from two coal fields, located on both sides of the river, one close to the Pemba Bay and the other near Itule town. Iron ore is extracted from large areas to the west of the Pemba Coalfield. Gold is also found in the valley in upper reaches of the Rarico River, a tributary of the Lugenda River. The river valley, and the Nissa Wild Life Preserve enclosed within it, has a history linked to World War I. Germans, under the command of General Von Lettow-Vorbeck, crossed the Ruvuma River at Negomano and entered the Portuguese held Mozambique in search of food for his troops. In December 1917, after crossing the river, the general with his army marched south along the Lugenda River and arrived at Metarica. One of the battalions dispatched towards the Mecula Mountain in search of food had to fight a fierce battle with the Portuguese. Witnesses to this battle are seen in the form of a few graves on the hill slopes at Mecula, the district capital of Nissa. Lugenda River Valley, formed by the river, is part of the rich ecological corridor comprising the Messalo and Rurumana Lugenda, Messalo and Rumana rivers, which form the Niassa National Reserve and Lurio conservation area. This route is being developed for game and ecotourism envisaging fishing, wildlife viewing, boat rides and so forth. Lugenda Wilderness Camp, which is part of the Wildlife Preserve, is on the eastern bank of the Lugenda river, amongst the Ngalongue Mountains (inselbergs); inselberg is a common international term used to define isolated rock hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain.