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16-553: The Kelanitissa Power Station is a state-owned power station located on the south bank of the Kelani River in the northern part of the city of Colombo , Sri Lanka . Commissioned in 1964, it is the first thermal power station built in Sri Lanka, after the country gained independence. The facility has a current gross installed capacity of 360 MW , a significant amount when compared to the total installed capacity of nearly 4,086 MW in

32-401: A barge , people dive to the river bed, from where the sand is lifted to the barge in a bucket, and when the barge is full, it is taken to the river bank and unloaded by a separate team. The sand mining causes the river bed to sink by approximately 10 cm (4 in) per year. At present, two main concerns in connection with the river are flooding during the monsoon and saline intrusion in

48-664: A single unit with higher capacity was subsequently chosen. Kelani River The Kelani River has two main tributaries in its upper reaches: the Kehelgamu Oya and the Maskeli Oya . These two contribute to hydro-electric production in Sri Lanka, housing several major reservoirs, ponds and power stations. Castlereigh Reservoir and Norton Reservoir are constructed across the Kehelgamu Oya, while Maskeliya Reservoir , Canyon Reservoir and Laxapana Reservoir are constructed across

64-583: Is connected closely with the Sinhala Buddhist culture of Sri Lanka, especially with the people living on the area identified as the Kelani Valley. This derives primarily from the fact that the Kelani River is associated with two of the most venerated Buddhist shrines and pilgrimages, i.e. Sri Pada Mountain and Kelani Raja Maha Viharaya. There are a number of folk poems that mention the Kelani River, such as

80-459: Is enhanced by the deepening of the river caused by sand mining. Regulation, in order to prevent saline intrusion, can reduce the water quality in other ways, and can increase the flood risk. Sand mining is economically important nationally and to the many people involved. The Kelani stream flow was investigated just upstream of Ambatale at Hanwella , with engineers analyzing the river discharges from 1973 to 2004 (in million m /month). Kelani River

96-744: The Maskeli Oya. In its lower reaches, some more tributaries connect to the Kelani River, out of which the most famous are the We Oya at Yatiyanthota, the Gurugoda Oya at Ruwanwella, and the Seethawaka Ganga at Avissawella . The Kelani supplies approximately 80% of the water used in Colombo . In addition, the river is used for transport , fisheries , sewage disposal , sand mining and for production of hydroelectricity . Through these factors, many people depend on

112-605: The River Kwai was filmed on the Kelani River near Kitulgala , although nothing remains now except the concrete foundations for the bridge (and, supposedly, the submerged train cars that plunged into the river in the climactic scene). The following table shows the major bridges over the Kelani River: Hanwella Hanwella is a town in Sri Lanka , situated about 30 km (19 mi) from Colombo ,

128-691: The city. The local version of the Disneyland, "Leisure World", is an attraction for kids a few kilometres away from the town. Currently, the part of the town situated on the Highlevel Road is gradually developing into a separate town called Pahatgama. Among government institutions, the Divisional secretariat office is located in Pahatgama on Highlevel Road. The main schools are Rajasinghe Central College, Roman Catholic, and Mayadunna Vidyalaya. MOH office, Hanwella

144-706: The commercial capital of the country. Hanwella lies on the Colombo - Ratnapura main road, on the banks of the Kelani River . This historic city belongs to the Colombo district and Avissawella electorate. Hanwella is one of three major towns in the Seethawake pradeshiya sabha , the other two being Kosgama and Padukka . Hanwella lies on both of the Colombo-Ratnapura roads, namely the Highlevel and Lowlevel roads. The Kelani River , one of Sri Lanka's major rivers, runs alongside

160-461: The dry season. In addition, Kelani River water levels affect the flood risk to Colombo, the capital of Sri Lanka, to a considerable extent. One reason is that part of the city and suburbs of Colombo lies on the lower flood plain of the river. Exposure of Colombo and the upper catchments of Kelani River to the South West Monsoon is another reason. The problems are related: the saline intrusion

176-459: The following: ඔන්න මලේ ඔය නා මල නෙළා වරෙන් අත්ත බිඳෙයි පය බුරුලෙන් තබා වරෙන් කැලණි ගඟේ ඔරු යනවා බලා වරෙන් සාදුකාර දී ඔරුවක නැගී වරෙන් සමනොළ මුදුන සිරිපද ඔබන මගුලට නිකසල මහ සඟන ගෙන වඩින මුනිඳුට පැහැදුල සුනිල් මිණියෙන් කළ මග ලෙස මනදොළ පිරෙයි ගඟ සිරිසර දුටු තොපට The Kalyani Ordination Hall in Bago, Myanmar derives its name from the Kelani River. The Academy Award -winning The Bridge on

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192-486: The river for their daily routine in life. Depending on the operation of three reservoirs , the river flow varies from 20 m /s (706 cu ft/s) to 25 m /s (883 cu ft/s) in the dry seasons, and 800 m /s (28,252 cu ft/s) to 1,500 m /s (52,972 cu ft/s) during the monsoons . The annual sand extraction from the river is approximately 600,000 m (6,458,346 sq ft) to 800,000 m (8,611,128 sq ft). From

208-580: The surrounding area. These sites have been preserved and can be seen in the Hanwella restaurant district. Portuguese and other colonial influences are still visible in the town. Prior to the construction of the Colombo-Kandy highway by the British, the main access road to Kandy and the interior of the country was via Hanwella. Hanwella is rapidly becoming urbanised. Several factories have been built in and around

224-554: The town. Hanwella borders the Gampaha district. The nearest towns are Padukka (8 km), Pugoda (8 km), Kosgama(8 km) and Nawagamuwa (8 km). There are some waterfalls, and lush green hills and rubber plantations surround the city. Two main reservoirs, called Labugama and Kalatuwawa, are situated close to Hanwella and supply water. Hanwella was part of the ancient Seethawaka kingdom . Many battles between Portuguese soldiers and Sinhalese troops took place in Hanwella and

240-520: The year 2017. The facility is owned and operated by the Ceylon Electricity Board . The power station has a total of 10 generation units: two 25 MW boiler steam units, six 20 MW gas turbines , one 115 MW gas turbine, and one 165 MW combined cycle unit. As of 2018, both 25 MW units and two 20 MW units were decommissioned after the commissioning of the combined cycle unit. The old units are now used as peak-load units. The 115 MW

256-530: Was sent to Italy for renovations in 2011. The newest 165 MW naphtha-fuelled combined cycle unit was commissioned in August 2002. It consists of a 110 MW gas turbine and a 55 MW steam turbine, and one exhaust heat recovery boiler. The project was funded by the Overseas Economic Cooperation Fund of Japan . Initially, the capacity was planned at 150 MW with two or three 37–67 MW units, but

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