Ciénaga is a municipality and a town in the Magdalena Department, Colombia, the second largest population center in this department, after the city of Santa Marta. It is situated at 11° 00' North, 74° 15' West, between the Sierra Nevada de Santa Marta, the Caribbean Sea and the Ciénaga Grande de Santa Marta marsh in northern Colombia. The town is situated in the northern part of Magdalena, 35 km from Santa Marta. In 1993, there were 121,681 inhabitants (65,357 in urban areas and 56,324 in rural areas). The mean annual temperature is 34°C.