Hanna Lake (Urdu: ہنہ جھيل) is a lake near Quetta city in Balochistan and is one of the main attractions in the city and a reservoir was Constructed by the British Empire. In 1894, a small action dam Surrpull (Red Bridge) was constructed on main Urak road for converting of water into Hanna Lake coming from the Zarghoon Mountains range, of streams, snow melting and rains through main channel. This channel nowadays needs repairs and is wasting water and recently[when?] the water level is deadly low, up to three feet, and thousands of fish are in danger.
There is also a water channel which was constructed the same time by the British to convert the snow and rain water near spin kaarez coming from Murdar mount to surrpull for filling of water in this lake. This channel was destroyed by the heavy flood in 1976 and still not constructed and all the snow and rain water is going waste till now and resultant the Hanna Lake was fully dried in 1999 to January 2005. If Hanna Lake Development Authority (HLDA) the custodians of Hanna Lake did not perform any action to bring water through surrpull the lake will be soon dry again. The lake is located a little short of the place where the Urak Valley begins and 14 km from Quetta.
The beautiful Hanna Lake was built in the time of British Empire in 1894. Golden fish in the lake come swimming right up to the edge of the lake. There is a lakeside restaurant with picnic tables shaded by pine trees. At one end, the irrigation dam rises out of the depths like battlements of a fort, and on the eastern part the well known Hayat Durrani Water Sports Academy (HDWSA) the only rowing, canoeing, kayaking and sailing training center in Balochistan Province. Hanna Lake is very attractive for holidaymakers, and is crowded with hikers and campers in holidays. You can hire a boat and paddle on the lake and round the island in the middle. The HLDA / HDWSA and Merck has planted various trees for the beautification and protection of environment in Hanna Lake Mountains.