Lake Fateh Sagar is a medium-sized perennial storage reservoir constructed in the year 1678 A. D. by the rulers of former Mewar State. Although primarily constructed for irrigational purpose, this water body has lately formed a second major source of drinking water for the city of Udaipur.

The main feeder canal of the lake comes from Madar tank situated at a higher altitude about 15 km from Udaipur City.

Lake Fateh Sagar is also connected to the adjoining Lake Pichhola through a canal having gates. This (former) lake has somewhat pear-like shape and is surrounded by hills except on its eastern side where a straight masonry dam of about 800 m length is located. The lake lies on the northwest of main Udaipur city. The runoff emerging from surrounding hillocks drains into this lake. Along the eastern shore line runs a beautiful serpentine road which has a stone wall on the lake periphery. This lake has got three prominent islands. The largest is developed into a public park. The second island is situated on the northern side and has an installation of solar observatory. The smallest island on the western side near shore supports a jet fountain. The western bank of lake is occupied by marginal agricultural field. The vegetation cover around the lake is scanty. However, several species of plants are found along the undulating roads and hillocks around this lake.

Leaching of nutrients from the catchment area and agricultural activities in the marginal areas of the lake has influenced the nutrient level of this water body. Similarly, incoming silt has also reduced the water holding capacity of this lake.

Lakes are focal point for social and economic activities of Udaipur people. Every year thousands of tourists from India and abroad come to this 'City of Lakes'. Yet this water body is facing acute shortage of water sometimes due to scanty rains. For checking loss of water through evaporation, Public Health Engineering Department (PHED) has been using cetyl alcohol (hexadecanol) during drought period. In the year 1972 the lake exhibited heavy bloom of blue green algae Microcystis. In 1978, local citizen groups and environmental conservation organizations undertook desilting operation through human labour wherein about 10 thousand truck loads of silt were removed from the shallow basin of this lake (Q).