Timbuktu increased competition from newly available trans-Atlantic sailing routes caused the city to decline. The first European to reach Timbuktu, Alexander Gordon Laing, did not arrive until 1826, and it was not until the 1890s that Timbuktu was formally incorporated into the French colony of Mali. Today, the city is still inhabited; however, the city is not as geopolitically relevant as it once was. Timbuktu is located on the southern edge of the Sahara north of the main channel of the River Niger. The town is surrounded by sand dunes and the streets are covered in sand. The port of Kabara
Timbuktu peaks in September, while in Timbuktu the flood lasts longer and usually reaches a maximum at the end of December. In the past, the area flooded by the river was more extensive and in years with high rainfall, floodwater would reach the western outskirts of Timbuktu itself. A small navigable creek to the west of the town is shown on the maps published by Heinrich Barth in 1857 and Félix Dubois in 1896. Between 1917 and 1921, during the colonial period, the French used slave labour to dig a narrow canal linking Timbuktu with Kabara. Over the following decades this