Caspian Sea
The wide and endorheic Caspian Sea has a north–south orientation and its main freshwater inflow, the Volga River, enters at the shallow north end. Two deep basins occupy its central and southern areas. These facts lead to horizontal differences in temperature, salinity, and ecology. The Caspian Sea spreads out over nearly 750 miles (1,200 km) from north to south, with an average width of 200 miles (320 km). It covers a region of around 149,200 square miles (386,400 square km)—bigger than the region of Japan—and its surface is about 90 feet (27 meters) below sea level. The sea bed in the southern part reaches as low as 1,023 m (3,356 ft) below sea level, which is the second lowest natural depression on earth after Lake Baikal (−1,180 m, −3,871 ft). The ancient inhabitants of its coast perceived the Caspian Sea as an ocean, probably because of its saltiness and large size.
Shabran District
Greater part of the district is mountainous. The Caspian Sea is located in 12 km from Shabran city. The district borders upon Quba, Khachmaz, Shamakhi and Siazan Districts. Forests occupy 27000 ha in mountainous territories and plains near the Caspian Sea and they are of great importance with its climatic and natural resources for the district. The Shabran and Davachi Rivers flow through the district's territory, and the Valvalachay and Gilgilchay Rivers flow in northern and southern borders directly to the Caspian Sea. Samur-Davachi lowland has an altitude of −28 m below the world ocean level.