Rawal Lake (Urdu: جھیل راول) in Pakistan is an artificial reservoir that provides the water needs for the cities of Rawalpindi and Islamabad. Korang River along with some other small streams coming from Margalla Hills have been set to form this artificial lake which covers an area of 8.8km². Korang River is the outlet stream of Rawal Dam. Rawal Lake is located within an isolated section of the Village Malpur, Bani Gala and Margalla Hills National Park.[1][2][3][4][5][6]
The area around the lake has been planted with flowering trees and laid out with gardens, picnic spots, and secluded paths.
The terraced garden and the lake are used for picnics, fishing and boating. The highest point in the garden offers a panoramic view of the lake, Margalla and Murree hills, Rawalpindi and Islamabad.
Boating, sailing, water skating and diving facilities are organized by private clubs.
To the west of the lake is the Islamabad Club, which offers different sporting facilities.
Wildlife
The reservoir is of considerable importance for wintering waterfowl, especially Anas platyrhynchos.
Resident mammals include the Red fox, Indian pangolin, Indian crested porcupine, jungle cat, Persian jackal, Central Asian boar and yellow-throated marten.
Reptiles include Indian Cobra and Russell's Viper.
It is a good place for birds watching, as the majority of Birds of Islamabad are found here.
Fishery
There are 15 fish species belonging to 11 genera that are present in Rawal Lake. The fish species in Rawal lake and its tributaries include: Doula (Channa channa), Rahu
(Labeorohita), Thaila (Catla catla), Mori (Cirrhinus mrigala), Carp fish (Cyprinus carpio) and Talapia (Tilapia mossambica).[7]
Features of Rawal Lake
Location: Islamabad Park Area
Longitude: 73° 7' E
Latitude: 33° 41' N
Catchments Area: 106.25 square miles (275km²)
Features of Rawal Lake dam
Type of dam: partly arched gravity dam (stone masonry)
Crest level: 1,752ft (534m)
Crest length: 700ft (210m)
Maximum height: 133.5ft (40.7m)
Saddle
Length 6,991ft (2,131m)
Height 24ft (7.3m)
Spillway
Type: Ogee gated structure
Discharge Capacity: 82000ft³/s (2,300 m³/s)
Reservoir
Area: 3 square miles (7.8km2)
Maximum depth: 102 feet (31m)
Live storage: 37,500 acre-feet (46,300,000m3)
Dead storage: 4,500 acre-feet (5,600,000m3)
Gross capacity: 42,000 acre-feet (52,000,000m3)
Canals
Left bank canal(Shahana Disty): length 5 miles (8.0km)
Capacity: 40ft³/s (1.1 m³/s)
Purpose: Irrigation
Right bank canal (Ojri Disty): length 1.5 miles (2.4km)
Capacity: 70ft³/s (2.0 m³/s)
Purpose: Drinking water supply to Rawalpindi
Drinking water supply
Rawalpindi: 25.00million US gallons per day (94,600m3/d)
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