Gulshan Lake is a lake in Dhaka, Bangladesh, that outskirt Gulshan Thana, Shahjadpur, and Baridhara Diplomatic Zone. The lake has been announced by the city enterprise as being “Naturally Critical Area” in 2001.
Direct dumping of sewage and water spillover had expanded the contamination of the lake. The lake has additionally encountered an algal blast which has additionally decreased the oxygen accessible, hurting the sea-going life.
Gulshan-Banani Lake which has been dealt with one of the real veins of Dhaka is being contaminated by the lakeside occupants. Over 200 sewerage channels from the lakeside houses releasing huge amounts of human waste and family unit refuse into the lake consistently.
Ascertain zones of Gulshan, Banani, and Niketan don’t have sewerage frameworks of WASA, the wrongdoing goes unabated, local people affirmed. Then again, WASA said that despite the fact that there were its sewerage lines, a few people were not willing to utilize those.
RAJUK (Rajdhani Unnayan Kartripakkha) has as of late taken a venture of Tk 400-crore to revamp the lakeside see.
History of Gulshan Lake Park: On June 2015 Bangladesh High Court ordered the government to free portions of Gulshan Lake that had been encroached upon. Since the July 2016 Dhaka attack, all boats have been removed from the lake. The government announced plans to introduce water taxis in the lake.
On April 2017, the Capital Development Authority under the Ministry of Housing and Public Works destroyed a number of structures on the banks of the lake to make way for the building of pathways on the banks of the lake.
From a careless look, the lavish green water hyacinth, not just on the first page of this every day yesterday yet in addition, in actuality – in the Gulshan Lake – may seem enchanting to anyone. Yet, one will essentially shiver to see what has been going on under the green front of the amphibian plants. The Lake fills in as a prolific reproducing ground for mosquitoes.
The city experts in Dhaka have a not insignificant rundown of disappointments – an itemized stock of which will just charge the aggregate mind of the perusers and is, in this way, pointless. Be that as it may, we can’t stay unconcerned given the unbridled development of hyacinth in the said lake when the city inhabitants are frightened at the flare-up of vector conceived infections like chikungunya and dengue.
Plenteous development of the sea-going plant not just dirties to the outrageous the water and condition of the lake and its connecting territories yet, in addition, deliver the minor dictators in trillions. Be that as it may, for puzzling reasons, the city partnership shuns liberating the Lake from the unwelcome development of much increasingly unwelcome plants.
Gulshan Lake is likely the main common lake in the region of the capital city. It should be kept clean for a few reasons. Whenever cleaned, it would free the lake water from contamination, stop the rearing of mosquitoes and add to the excellence of the regions. The foulness of the lake is a well-established issue and we have managed it on multitudinous events. Yet, cleaning the Lake is by all accounts the keep going thing on the rundown of their needs.
The organization specialists have authorized a decent measure of cash for killing mosquitoes. It is normal that they have reserved a sum only for cleaning the Gulshan Lake. Assuming this is, where has that store gone and for what reason does the Lake still stay messy? Furthermore, is there any likelihood that individuals can be shielded from mosquitoes without cleaning the Gulshan Lake and other shut water bodies?
Given the significance of a clean Gulshan Lake, the city specialists were relied upon to give due significance to the errand. Would it be a good idea for us to advise them that it is one of their needs occupations that should be tended to direly?
Opening Hour: Saturday – Friday: 06.00 Am – 10.00 Pm.
Address, Location of Gulshan Lake Park:
Gulshan Lake Park, Road no-60, Gulshan-2, Dhaka-1212.
Other Information’s:
Importance of the lake: In the context of a very scarce recreational opportunity in Dhaka city, this lake could be an important recreational point for city dwellers. Despite being a source of groundwater recharge, the lake has a very important cooling effect on the city environment. Also, this lake is a source of drinking water for wildfowl and other animals in the area.
Physiography of lake: The Gulshan Lake Park is elongated in a north-south direction and surrounded mainly by residential areas and some industrial units as well. The lake is fragmented into four parts by culvert type structures. Openings of such structures appear to be very insufficient for a free flow of water among different parts of the lake. This badly affects the dilution of pollution loads, dissolution of oxygen into the lake water and as a result, the localized effect of pollution sometimes becomes so severe that it causes the death of aquatic organisms, such as fish.
Water quality: Pollution load (Biological Oxygen Demand/BOD) measured in the lake has been much greater than the critical level for fisheries (Table 1). Also, there is spatial variation in the BOD load in different parts of the lake. In the middle points of each part of the lake, the BOD load is smaller compared to the end-points (in the longitudinal direction) or close to culverts. A similar trend in Dissolved Oxygen (DO) levels is observed throughout the lake. These negative impacts might have originated due to the fragmentation of Lake Habitat that hinders lake water movement and ultimately affects the load accumulation capacity of the lake.
Temporal variations in DO level in lake water (considering a 24-hour cycle) are observed (Fig. 2). The deep green color of water indicates the presence of an algal bloom in the lake, owing to the high pollution load. After daybreak, as the sun is high, the DO level in lake water reaches its maximum around noon, due to algal photosynthesis by which oxygen is released into the lake water. The DO level begins to decline as the sun goes down. At night, through to early in the morning, high respirational demand for oxygen causes exhaustion of oxygen in the water, leading to a DO level near zero. Such a temporary anaerobic condition might have been responsible for the death of fishes in the lake.