English: One of Russia’s largest reservoirs, the Tsimlyansk, is highlighted in this Envisat image acquired on 27 September 2008 over southern Russia. The reservoir is located at the great bend of the Don River near the town of Tsimlyansk in the province of Rostov. Many agricultural crops can be seen growing along the river, including wheat, rice, cotton, alfalfa, grapes and other fruits and vegetables. The darker brown areas around the reservoir indicate where crops have already been harvested. Earth observation satellites are used in agricultural monitoring for mapping and classifying land use, crop type, crop health, change detection, irrigated landscape mapping and crop area mapping.