The elevation map of Niger is characterized by the presence of several plateaus that are found within the Sahara desert, which covers much of the country's land area.
The average elevation of Niger is around 450 meters above sea level, and most of the major rivers of the country flow toward the Niger River, in the southwest of the country.
The landscape is marked by a series of cliffs, mesas, and sand dunes of varying height
In general, the northern parts of the country have the lowest elevations, while the highest points are found in the Aïr Massif in the central part of Niger.
The highest point in Niger is Mount Bagzane, which stands at an elevation of 2,022 meters and is located in the Aïr Massif.
The lowest point in Niger is the Niger River, which flows through the southwestern part of the country and has an elevation of around 200 meters above sea level.
Niger has a similar topography to many other Sahelian countries, such as Mali, Chad, and Mauritania, which are all characterized by vast expanses of desert terrain, numerous plateaus, and isolated mountain ranges.
See here a list of 10 cities in Niger and their elevation above sea level.