489:
421:
31:
44:
542:
51:
573:
The project was planned as a single purpose hydropower project. Therefore, the effects on the agriculture and the environment of the area were taken into consideration very little during the development. Although an irrigational release valve (IRV) is there in the dam to supply water to the farmlands
496:
The
Samanala Dam is 110 metres (360 ft) in height and has a length of 530 metres (1,740 ft) at crest level. The volume of the dam is about 4,500,000 cubic metres (160,000,000 cu ft). Rainfall in the area has an annual average of 2,867 millimetres (112.9 in), and the catchment
564:
The leak is constantly monitored. If the leak remains stable and does not increase further, it does not pose a threat to the sustainability of the project. The karstic ground has created complex geological conditions, and as a result the exact mechanism of the leak cannot be established, so remedial
577:
However, the necessity to constantly release water for agriculture in the downstream areas was reduced due to the leak. Of the water released from the
Samanala Dam for agriculture in the downstream areas, two-thirds is from the leak and only one-third has to be supplied via the IRV.
561:. Subsequent measures taken to control the leakage were largely ineffective. The leakage of approximately 2,100 litres (460 imp gal) per second continues, but has not affected power production at the plant, which has been in full operation since its commissioning in 1992.
501:
of the dam has three gates, each 14 metres (46 ft) high and 11 metres (36 ft) wide. It can discharge water at a rate of 3,600 cubic metres (130,000 cu ft) per second. Its tunnel is 4.5 metres (15 ft) in diameter and 5,159 metres (16,926 ft) in length.
451:, which would address the shortage of electricity in the country. Detailed investigations for a hydroelectric power plant in this area have been carried out since 1958, but the scheme was initiated only in 1986. The financing for the project was given by the governments of
517:
10 cu ft) is dead storage. The reservoir's full supply level is 460 metres (1,510 ft) above main sea level, and the reservoir spreads 8 kilometres (5.0 mi) upstream at this level. The reservoir is u-shaped. It covers an area of
476:, but with the remedial measures taken to control the leak, the cost increased to 74,313 million yen. The Samanalawewa power plant was commissioned in 1992. The Samanalawewa project is the second largest hydroelectric scheme in Sri Lanka after the
380:. It is notable for a large leak on its right bank. Power production continues as planned despite the leakage, and the water from the leak now provides two thirds of the water issued by the reservoir for agriculture in downstream areas.
557:
was used in an effort to remedy this. However, as the reservoir was being filled, a large leak occurred on the side of the right bank, about 300 metres (980 ft) downstream from the dam, causing a
2386:
1533:
1498:
2376:
947:
447:, the government of Sri Lanka decided to initiate another hydroelectric power project. A reservoir type hydroelectric power plant was planned to be constructed across the
1445:
2056:
1491:
1460:
1422:
587:
678:
1427:
1231:
1216:
940:
522:. However, with the water leakage the water level was reduced to 430 metres (1,410 ft). It is one of the largest reservoirs in Sri Lanka.
1270:
43:
1226:
1211:
749:
615:
1484:
1465:
592:
1310:
933:
715:
262:
94:
1326:
1160:
462:
2391:
1440:
1280:
1144:
1133:
1123:
835:
Nagel, Karl-Heinz (1992). "Limits of the geological predictions constructing the samanalawewa pressure tunnel, Sri Lanka".
1516:
876:
550:
1417:
1407:
574:
in the downstream areas, the yield and cultivable acreage has declined since the
Samanalawewa project was commissioned.
488:
420:
30:
901:
2255:
1862:
1543:
1331:
1265:
529:, each with a capacity of 62 MW, and generates 405 GWh of energy annually. The powerplant is managed by the
191:
2381:
2320:
2290:
2100:
1907:
1799:
1321:
1275:
1128:
781:
2315:
2042:
1902:
1412:
1372:
1295:
2396:
2180:
1402:
1357:
1352:
1336:
1300:
1290:
1072:
956:
530:
297:
774:
1367:
1305:
1190:
1170:
1139:
444:
497:
area is 372 square kilometres (144 sq mi). The dam is of rock fill, central earth core type. The
2085:
1206:
991:
643:"Estimation of Economic Loss Due to Reduction of Paddy Land Areas: Construction of Samanalawewa Reservoir"
803:
1755:
1450:
1377:
1362:
1201:
1196:
2260:
685:
477:
433:
2275:
1980:
1975:
1872:
1735:
1382:
1315:
1221:
1165:
2250:
2240:
1945:
1857:
1847:
1521:
1455:
642:
505:
The reservoir created by the dam has a total live storage capacity of 218,000,000 cubic metres (7.7
2325:
2305:
1528:
1285:
1236:
1185:
1180:
1175:
902:"A Case Study of the Samanalawewa Reservoir on the Walawe River in an Area of Karst in Sri Lanka"
852:
317:
753:
389:
2285:
2175:
2130:
1965:
1935:
1882:
1067:
1042:
443:
rapidly increased. When it became clear that it would not be possible to meet the demand with
2300:
2280:
2220:
2150:
2115:
1877:
1730:
1710:
1093:
1052:
844:
554:
429:
357:
349:
129:
679:"Investigation of Water Leakage Mechanism in the Karstic Dam Site, Samanalawewa, Sri Lanka"
2295:
2155:
2090:
2016:
2011:
1950:
1892:
1770:
1705:
1057:
996:
526:
2210:
1827:
2350:
2270:
2265:
2235:
2225:
2205:
2095:
2080:
2032:
2006:
1955:
1867:
1837:
1822:
1657:
1032:
986:
466:
456:
377:
330:
247:
181:
2370:
2310:
2215:
2170:
2135:
2125:
2075:
2037:
2001:
1996:
1960:
1940:
1897:
1832:
1745:
1700:
1620:
1603:
1598:
1103:
1027:
1006:
856:
436:
400:, a location 400 metres (1,300 ft) above mean sea level. It is near the town of
304:
2330:
2160:
2120:
1970:
1912:
1887:
1817:
1780:
1775:
1720:
1672:
1635:
1593:
1586:
1062:
1001:
448:
163:
905:
2245:
2140:
2110:
2105:
1807:
1785:
1760:
1740:
1677:
1662:
1645:
1640:
1615:
1608:
1088:
1047:
1037:
541:
509:
10 cu ft). Its gross storage capacity is 278,000,000 cubic metres (9.8
397:
368:) is the third-largest hydroelectric scheme in the country, producing 405
2200:
2145:
1852:
1812:
1715:
1625:
1581:
1561:
1011:
1476:
877:"Third Party Evaluator's Opinion on Samanalawewa Hydroelectric Power Project"
469:
were the contracts to lay roads, drive a tunnel and build the power station.
277:
264:
109:
96:
2355:
2230:
1842:
1725:
1571:
1553:
440:
401:
361:
82:
72:
925:
1750:
1650:
1630:
1576:
558:
498:
323:
310:
1765:
1684:
1566:
848:
519:
409:
405:
1667:
553:
area of ground was found during the construction of the dam in 1988.
393:
811:
540:
487:
452:
419:
373:
837:
752:. International Water Power and Dam Construction. Archived from
1480:
929:
473:
369:
336:
176:
372:
of energy annually. It was built with financial support from
810:. Ministry of Power and Energy of Sri Lanka. Archived from
472:
The cost of the project was estimated to be 60,176 million
513:
10 cu ft), of which 60,000,000 cubic metres (2.1
439:
power projects implemented, the demand for electricity in
404:, 160 kilometres (99 mi) southeast of the capital
1534:
Ministry of
Irrigation and Water Resources Management
904:. American Society of Civil Engineers. Archived from
2343:
2189:
2066:
2055:
2025:
1989:
1928:
1921:
1798:
1693:
1551:
1542:
1395:
1345:
1258:
1249:
1153:
1116:
1081:
1020:
979:
972:
963:
329:
316:
303:
293:
256:
246:
234:
226:
221:
213:
205:
197:
187:
175:
170:
159:
151:
143:
135:
125:
88:
78:
68:
21:
364:. Commissioned in 1992, the Samanalawewa Project (
2387:Buildings and structures in Sabaragamuwa Province
830:
828:
1492:
941:
750:"A modern addition - uncovering Samanalawewa"
392:basin. It was built at the confluence of the
8:
743:
741:
739:
737:
735:
2063:
1925:
1548:
1499:
1485:
1477:
1255:
976:
969:
948:
934:
926:
870:
868:
866:
716:"Samanalawewa Hydroelectric Power Project"
217:3,600 m/s (130,000 cu ft/s)
18:
2377:Hydroelectric power stations in Sri Lanka
672:
670:
668:
666:
664:
662:
1461:List of dams and reservoirs in Sri Lanka
1423:Public Utilities Commission of Sri Lanka
882:. Japan International Cooperation Agency
843:. Springer Berlin / Heidelberg: 97–110.
721:. Japan International Cooperation Agency
709:
707:
705:
610:
608:
588:List of dams and reservoirs in Sri Lanka
900:Laksiri, K.; Gunathilake, J.; Iwao, Y.
604:
648:. Geo-Informatics Society of Sri Lanka
641:Kumara, E.P.N. Udaya; Wijeratne, A.W.
636:
634:
632:
7:
1446:India–Sri Lanka HVDC Interconnection
484:Dam, reservoir and the power station
408:. The ground of the project area is
50:
1466:List of power stations in Sri Lanka
593:List of power stations in Sri Lanka
388:The Samanala Dam is located in the
14:
565:measures have been unsuccessful.
463:Sir Alexander Gibb & Partners
252:372 km (144 sq mi)
775:"The UK'S Forest Footprint 2001"
49:
42:
29:
1441:Sri Lanka Electricity Act 2024
545:The leak from the Samanala Dam
358:hydroelectric power generation
356:) is a dam primarily used for
1:
1517:Sri Lankan irrigation network
748:Laksiri, Kamal (2004-05-04).
525:The power house contains two
1428:Sustainable Energy Authority
1418:Ministry of Power and Energy
1408:Ceylon Petroleum Corporation
2413:
2321:Tissa Wewa (Tissamaharama)
1908:Tissa Wewa (Tissamaharama)
1507:Inland waters of Sri Lanka
782:World Wide Fund for Nature
416:Background and development
366:Samanala Reservoir Project
209:530 m (1,739 ft)
60:සමනලවැව වේල්ල in Sri Lanka
2316:Tissa Wewa (Anuradhapura)
2043:Malala-Ambilikala Lagoons
1903:Tissa Wewa (Anuradhapura)
1512:
1436:
1413:Lanka Electricity Company
1259:Operational / UC
37:
28:
1403:Ceylon Electricity Board
957:Electricity in Sri Lanka
808:Ceylon Electricity Board
804:"Hydro Power Generation"
616:"Uda Walawe (Sri Lanka)"
531:Ceylon Electricity Board
465:did the design work and
298:Ceylon Electricity Board
201:110 m (361 ft)
198:Height (foundation)
58:Location of Samanala Dam
1271:Asia Power Sapugaskanda
445:coal-fired power plants
318:Installed capacity
238:218,000,000 m (7.7
144:Construction began
2392:Dams completed in 1992
1161:Ambewela Aitken Spence
546:
493:
425:
331:Annual generation
214:Spillway capacity
160:Construction cost
2193:(incl. ancient tanks)
1756:Pallavarayankaddu Aru
1451:Sapugaskanda Refinery
677:Laksiri, L.B. Kamal.
544:
491:
423:
177:Type of dam
2276:Muthuiyankaddu Kulam
1981:Valaichchenai Lagoon
1976:Vadamarachchi Lagoon
1873:Muthuiyankaddu Kulam
1736:Nay Aru (Mullaitivu)
492:The dam and spillway
278:6.58417°N 80.80806°E
110:6.68000°N 80.79833°E
2251:Konduwattuwana Wewa
1946:Chundikkulam Lagoon
1858:Konduwattuwana Wewa
1848:Kandalama Reservoir
1522:Tank cascade system
1456:Hambantota Refinery
274: /
248:Catchment area
242:10 cu ft)
235:Total capacity
106: /
2067:With hydroelectric
1529:Mahaweli Authority
1327:Sojitz Kelanitissa
849:10.1007/BF02594909
714:Shindo, Hiroyuki.
547:
494:
426:
230:Samanala Reservoir
2382:Dams in Sri Lanka
2364:
2363:
2339:
2338:
2286:Parakrama Samudra
2051:
2050:
1966:Ullackalie Lagoon
1936:Batticaloa Lagoon
1883:Parakrama Samudra
1794:
1793:
1474:
1473:
1391:
1390:
1245:
1244:
1112:
1111:
342:
341:
283:6.58417; 80.80806
171:Dam and spillways
152:Opening date
115:6.68000; 80.79833
2404:
2281:Nachchaduwa wewa
2194:
2064:
1926:
1878:Nachchaduwa wewa
1731:Nay Aru (Mannar)
1711:Kodalikkallu Aru
1549:
1501:
1494:
1487:
1478:
1281:Ace Embilipitiya
1256:
1145:Solar One Ceylon
1021:Mahaweli Complex
980:Laxapana Complex
977:
970:
950:
943:
936:
927:
917:
916:
914:
913:
897:
891:
890:
888:
887:
881:
872:
861:
860:
832:
823:
822:
820:
819:
800:
794:
793:
791:
789:
779:
771:
765:
764:
762:
761:
745:
730:
729:
727:
726:
720:
711:
700:
699:
697:
696:
690:
684:. Archived from
683:
674:
657:
656:
654:
653:
647:
638:
627:
626:
624:
623:
612:
555:Curtain grouting
527:Francis turbines
516:
512:
508:
478:Mahaweli project
289:
288:
286:
285:
284:
279:
275:
272:
271:
270:
267:
241:
121:
120:
118:
117:
116:
111:
107:
104:
103:
102:
99:
53:
52:
46:
33:
19:
16:Dam in Balangoda
2412:
2411:
2407:
2406:
2405:
2403:
2402:
2401:
2397:Embankment dams
2367:
2366:
2365:
2360:
2335:
2192:
2191:
2190:Irrigation-only
2185:
2068:
2058:
2047:
2021:
2017:Uppu Aru Lagoon
2012:Puttalam Lagoon
1985:
1951:Kokkilai Lagoon
1917:
1893:Sembuwatta Lake
1790:
1771:Piramenthal Aru
1706:Kanakarayan Aru
1689:
1538:
1508:
1505:
1475:
1470:
1432:
1387:
1341:
1251:
1241:
1149:
1108:
1077:
1016:
965:
959:
954:
923:
921:
920:
911:
909:
899:
898:
894:
885:
883:
879:
875:Lakshman, W.D.
874:
873:
864:
834:
833:
826:
817:
815:
802:
801:
797:
787:
785:
777:
773:
772:
768:
759:
757:
747:
746:
733:
724:
722:
718:
713:
712:
703:
694:
692:
688:
681:
676:
675:
660:
651:
649:
645:
640:
639:
630:
621:
619:
614:
613:
606:
601:
584:
571:
539:
514:
510:
506:
486:
418:
386:
282:
280:
276:
273:
268:
265:
263:
261:
260:
239:
114:
112:
108:
105:
100:
97:
95:
93:
92:
64:
63:
62:
61:
59:
56:
55:
54:
23:
17:
12:
11:
5:
2410:
2408:
2400:
2399:
2394:
2389:
2384:
2379:
2369:
2368:
2362:
2361:
2359:
2358:
2353:
2351:Hamilton Canal
2347:
2345:
2341:
2340:
2337:
2336:
2334:
2333:
2328:
2323:
2318:
2313:
2308:
2303:
2298:
2293:
2288:
2283:
2278:
2273:
2271:Minneriya Tank
2268:
2263:
2258:
2253:
2248:
2243:
2238:
2233:
2228:
2226:Iranamadu Tank
2223:
2218:
2213:
2208:
2203:
2197:
2195:
2187:
2186:
2184:
2183:
2178:
2173:
2168:
2163:
2158:
2153:
2148:
2143:
2138:
2133:
2128:
2123:
2118:
2113:
2108:
2103:
2098:
2093:
2088:
2083:
2078:
2072:
2070:
2061:
2053:
2052:
2049:
2048:
2046:
2045:
2040:
2035:
2033:Koggala Lagoon
2029:
2027:
2026:Southern coast
2023:
2022:
2020:
2019:
2014:
2009:
2007:Negombo Lagoon
2004:
1999:
1993:
1991:
1987:
1986:
1984:
1983:
1978:
1973:
1968:
1963:
1958:
1956:Nai Aru Lagoon
1953:
1948:
1943:
1938:
1932:
1930:
1923:
1919:
1918:
1916:
1915:
1910:
1905:
1900:
1895:
1890:
1885:
1880:
1875:
1870:
1868:Minneriya Tank
1865:
1860:
1855:
1850:
1845:
1840:
1838:Iranamadu Tank
1835:
1830:
1825:
1820:
1815:
1810:
1804:
1802:
1796:
1795:
1792:
1791:
1789:
1788:
1783:
1778:
1773:
1768:
1763:
1758:
1753:
1748:
1743:
1738:
1733:
1728:
1723:
1718:
1713:
1708:
1703:
1697:
1695:
1691:
1690:
1688:
1687:
1682:
1681:
1680:
1670:
1665:
1660:
1658:Mahaweli Ganga
1655:
1654:
1653:
1648:
1643:
1633:
1628:
1623:
1618:
1613:
1612:
1611:
1606:
1601:
1591:
1590:
1589:
1579:
1574:
1569:
1564:
1558:
1556:
1546:
1540:
1539:
1537:
1536:
1531:
1526:
1525:
1524:
1513:
1510:
1509:
1506:
1504:
1503:
1496:
1489:
1481:
1472:
1471:
1469:
1468:
1463:
1458:
1453:
1448:
1443:
1437:
1434:
1433:
1431:
1430:
1425:
1420:
1415:
1410:
1405:
1399:
1397:
1393:
1392:
1389:
1388:
1386:
1385:
1380:
1375:
1370:
1365:
1360:
1355:
1349:
1347:
1346:Decommissioned
1343:
1342:
1340:
1339:
1334:
1329:
1324:
1319:
1313:
1308:
1303:
1298:
1293:
1288:
1283:
1278:
1273:
1268:
1262:
1260:
1253:
1252:power stations
1247:
1246:
1243:
1242:
1240:
1239:
1234:
1229:
1224:
1219:
1214:
1209:
1204:
1199:
1194:
1188:
1183:
1178:
1173:
1168:
1163:
1157:
1155:
1151:
1150:
1148:
1147:
1142:
1137:
1131:
1126:
1120:
1118:
1114:
1113:
1110:
1109:
1107:
1106:
1101:
1096:
1091:
1085:
1083:
1079:
1078:
1076:
1075:
1070:
1065:
1060:
1055:
1050:
1045:
1040:
1035:
1030:
1024:
1022:
1018:
1017:
1015:
1014:
1009:
1004:
999:
994:
989:
983:
981:
974:
967:
966:power stations
961:
960:
955:
953:
952:
945:
938:
930:
919:
918:
892:
862:
824:
795:
766:
731:
701:
658:
628:
603:
602:
600:
597:
596:
595:
590:
583:
580:
570:
567:
538:
535:
485:
482:
467:Balfour Beatty
457:United Kingdom
417:
414:
396:river and the
385:
382:
378:United Kingdom
340:
339:
333:
327:
326:
320:
314:
313:
307:
301:
300:
295:
291:
290:
258:
254:
253:
250:
244:
243:
236:
232:
231:
228:
224:
223:
219:
218:
215:
211:
210:
207:
203:
202:
199:
195:
194:
189:
185:
184:
182:Embankment dam
179:
173:
172:
168:
167:
166:74,313 million
161:
157:
156:
153:
149:
148:
145:
141:
140:
137:
133:
132:
127:
123:
122:
90:
86:
85:
80:
76:
75:
70:
66:
65:
57:
48:
47:
41:
40:
39:
38:
35:
34:
26:
25:
15:
13:
10:
9:
6:
4:
3:
2:
2409:
2398:
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2375:
2374:
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2357:
2354:
2352:
2349:
2348:
2346:
2342:
2332:
2329:
2327:
2324:
2322:
2319:
2317:
2314:
2312:
2311:Sorabora Wewa
2309:
2307:
2304:
2302:
2299:
2297:
2294:
2292:
2289:
2287:
2284:
2282:
2279:
2277:
2274:
2272:
2269:
2267:
2264:
2262:
2261:Lunugamwehera
2259:
2257:
2254:
2252:
2249:
2247:
2244:
2242:
2239:
2237:
2234:
2232:
2229:
2227:
2224:
2222:
2219:
2217:
2216:Giritale Tank
2214:
2212:
2209:
2207:
2204:
2202:
2199:
2198:
2196:
2188:
2182:
2179:
2177:
2176:Upper Kotmale
2174:
2172:
2169:
2167:
2164:
2162:
2159:
2157:
2154:
2152:
2149:
2147:
2144:
2142:
2139:
2137:
2134:
2132:
2131:Moragahakanda
2129:
2127:
2124:
2122:
2119:
2117:
2114:
2112:
2109:
2107:
2104:
2102:
2099:
2097:
2094:
2092:
2089:
2087:
2084:
2082:
2079:
2077:
2074:
2073:
2071:
2065:
2062:
2060:
2054:
2044:
2041:
2039:
2038:Rekawa Lagoon
2036:
2034:
2031:
2030:
2028:
2024:
2018:
2015:
2013:
2010:
2008:
2005:
2003:
2002:Mundal Lagoon
2000:
1998:
1997:Jaffna Lagoon
1995:
1994:
1992:
1990:Western coast
1988:
1982:
1979:
1977:
1974:
1972:
1969:
1967:
1964:
1962:
1961:Nanthi Lagoon
1959:
1957:
1954:
1952:
1949:
1947:
1944:
1942:
1941:Chalai Lagoon
1939:
1937:
1934:
1933:
1931:
1929:Eastern coast
1927:
1924:
1920:
1914:
1911:
1909:
1906:
1904:
1901:
1899:
1898:Sorabora Wewa
1896:
1894:
1891:
1889:
1886:
1884:
1881:
1879:
1876:
1874:
1871:
1869:
1866:
1864:
1861:
1859:
1856:
1854:
1851:
1849:
1846:
1844:
1841:
1839:
1836:
1834:
1833:Giritale Tank
1831:
1829:
1826:
1824:
1821:
1819:
1816:
1814:
1811:
1809:
1806:
1805:
1803:
1801:
1797:
1787:
1784:
1782:
1779:
1777:
1774:
1772:
1769:
1767:
1764:
1762:
1759:
1757:
1754:
1752:
1749:
1747:
1746:Nilwala River
1744:
1742:
1739:
1737:
1734:
1732:
1729:
1727:
1724:
1722:
1719:
1717:
1714:
1712:
1709:
1707:
1704:
1702:
1701:Akkarayan Aru
1699:
1698:
1696:
1692:
1686:
1683:
1679:
1676:
1675:
1674:
1671:
1669:
1666:
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1644:
1642:
1639:
1638:
1637:
1634:
1632:
1629:
1627:
1624:
1622:
1621:Kumbukkan Oya
1619:
1617:
1614:
1610:
1607:
1605:
1604:Maskeliya Oya
1602:
1600:
1599:Kehelgamu Oya
1597:
1596:
1595:
1592:
1588:
1585:
1584:
1583:
1580:
1578:
1575:
1573:
1570:
1568:
1565:
1563:
1560:
1559:
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1547:
1545:
1541:
1535:
1532:
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1527:
1523:
1520:
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1511:
1502:
1497:
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1488:
1483:
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1479:
1467:
1464:
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1454:
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1449:
1447:
1444:
1442:
1439:
1438:
1435:
1429:
1426:
1424:
1421:
1419:
1416:
1414:
1411:
1409:
1406:
1404:
1401:
1400:
1398:
1396:Organizations
1394:
1384:
1381:
1379:
1376:
1374:
1371:
1369:
1366:
1364:
1361:
1359:
1356:
1354:
1351:
1350:
1348:
1344:
1338:
1335:
1333:
1332:Uthuru Janani
1330:
1328:
1325:
1323:
1320:
1317:
1314:
1312:
1309:
1307:
1304:
1302:
1299:
1297:
1294:
1292:
1289:
1287:
1284:
1282:
1279:
1277:
1274:
1272:
1269:
1267:
1266:Aitken Spence
1264:
1263:
1261:
1257:
1254:
1248:
1238:
1235:
1233:
1230:
1228:
1225:
1223:
1220:
1218:
1215:
1213:
1210:
1208:
1205:
1203:
1200:
1198:
1195:
1192:
1191:Mannar Island
1189:
1187:
1184:
1182:
1179:
1177:
1174:
1172:
1171:Madurankuliya
1169:
1167:
1164:
1162:
1159:
1158:
1156:
1152:
1146:
1143:
1141:
1138:
1135:
1132:
1130:
1127:
1125:
1122:
1121:
1119:
1115:
1105:
1102:
1100:
1097:
1095:
1092:
1090:
1087:
1086:
1084:
1080:
1074:
1071:
1069:
1068:Upper Kotmale
1066:
1064:
1061:
1059:
1056:
1054:
1051:
1049:
1046:
1044:
1043:Moragahakanda
1041:
1039:
1036:
1034:
1031:
1029:
1026:
1025:
1023:
1019:
1013:
1010:
1008:
1005:
1003:
1000:
998:
995:
993:
990:
988:
985:
984:
982:
978:
975:
971:
968:
962:
958:
951:
946:
944:
939:
937:
932:
931:
928:
924:
908:on 2013-02-26
907:
903:
896:
893:
878:
871:
869:
867:
863:
858:
854:
850:
846:
842:
838:
831:
829:
825:
814:on 2007-04-20
813:
809:
805:
799:
796:
783:
776:
770:
767:
756:on 2010-01-09
755:
751:
744:
742:
740:
738:
736:
732:
717:
710:
708:
706:
702:
691:on 2011-07-22
687:
680:
673:
671:
669:
667:
665:
663:
659:
644:
637:
635:
633:
629:
617:
611:
609:
605:
598:
594:
591:
589:
586:
585:
581:
579:
575:
568:
566:
562:
560:
556:
552:
543:
536:
534:
532:
528:
523:
521:
503:
500:
490:
483:
481:
479:
475:
470:
468:
464:
460:
458:
454:
450:
446:
442:
438:
437:hydroelectric
435:
431:
422:
415:
413:
411:
407:
403:
399:
395:
391:
383:
381:
379:
375:
371:
367:
363:
359:
355:
354:සමනලවැව වේල්ල
351:
347:
338:
334:
332:
328:
325:
321:
319:
315:
312:
308:
306:
302:
299:
296:
292:
287:
259:
255:
251:
249:
245:
237:
233:
229:
225:
220:
216:
212:
208:
204:
200:
196:
193:
190:
186:
183:
180:
178:
174:
169:
165:
162:
158:
154:
150:
146:
142:
138:
134:
131:
128:
124:
119:
91:
87:
84:
81:
77:
74:
71:
67:
45:
36:
32:
27:
24:සමනලවැව වේල්ල
20:
2331:Vavuni Kulam
2301:Rambakan Oya
2256:Lake Gregory
2221:Inginimitiya
2211:Giant's Tank
2165:
2116:Kukule Ganga
2069:capabilities
1971:Upaar Lagoon
1913:Vavuni Kulam
1888:Ratgama Lake
1863:Lake Gregory
1828:Giant's Tank
1818:Bolgoda Lake
1781:Valukkai Aru
1776:Theravil Aru
1721:Mandekal Aru
1673:Walawe River
1636:Malwathu Oya
1594:Kelani River
1587:Kukule Ganga
1322:Sapugaskanda
1276:Colombo Port
1207:Pawan Danavi
1098:
1094:Kukule Ganga
922:
910:. Retrieved
906:the original
895:
884:. Retrieved
840:
836:
816:. Retrieved
812:the original
807:
798:
786:. Retrieved
784:. p. 32
769:
758:. Retrieved
754:the original
723:. Retrieved
693:. Retrieved
686:the original
650:. Retrieved
620:. Retrieved
576:
572:
563:
548:
524:
504:
495:
471:
461:
449:Walawe river
427:
424:Quarry site.
387:
365:
353:
346:Samanala Dam
345:
343:
192:Walawe River
22:Samanala Dam
2296:Rajanganaya
2156:Randenigala
2091:Castlereigh
1808:Abhaya Wewa
1786:Verugal Aru
1761:Parangi Aru
1741:Netheli Aru
1678:Belihul Oya
1663:Menik Ganga
1646:Kotmale Oya
1641:Amban Ganga
1616:Kirindi Oya
1609:Pusweli Oya
1373:Heladhanavi
1318:(cancelled)
1296:Kelanitissa
1250:Fossil-fuel
1232:Vidatamunai
1217:Seguwantivu
1202:Nirmalapura
1197:Nala Danavi
1186:Mampuri-III
1117:Solar power
1058:Randenigala
997:Castlereigh
973:Hydro power
964:Sustainable
398:Belihul Oya
294:Operator(s)
281: /
257:Coordinates
139:Operational
113: /
89:Coordinates
2371:Categories
2266:Maduru Oya
2236:Kalu Ganga
2201:Abhayavapi
2096:Deduru Oya
2081:Broadlands
2059:reservoirs
1853:Kandy Lake
1813:Beira Lake
1716:Madu Ganga
1626:Maduru Oya
1582:Kalu Ganga
1562:Deduru Oya
1358:Ace Matara
1353:Ace Horana
1337:Yugadanavi
1301:Lakdhanavi
1291:Karadiyana
1227:Vallimunai
1222:Uppudaluwa
1212:Pollupalai
1193:(proposed)
1181:Mampuri-II
1166:Hambantota
1154:Wind power
1136:(proposed)
1134:Maduru Oya
1124:Hambantota
1033:Deduru Oya
987:Broadlands
912:2009-06-27
886:2009-06-27
818:2009-06-27
788:29 October
760:2009-06-27
725:2009-06-27
695:2009-06-27
652:2009-06-27
622:2009-06-27
599:References
390:Uda Walawe
269:80°48′29″E
266:06°35′03″N
101:80°47′54″E
98:06°40′48″N
2356:Yodha Ela
2291:Puhulpola
2241:Kandalama
2231:Kala Wewa
2206:Diyawanna
2171:Udawalawe
2136:Moragolla
2126:Maskeliya
2076:Bowatenna
1843:Kala Wewa
1823:Diyawanna
1726:Mavil Aru
1694:<100km
1572:Gin Ganga
1368:Chunnakam
1306:Lakvijaya
1176:Mampuri-I
1140:Sagasolar
1104:Udawalawe
1028:Bowatenna
1007:Maskeliya
857:107473099
551:permeable
518:897
441:Sri Lanka
428:With the
402:Balangoda
362:Sri Lanka
222:Reservoir
83:Balangoda
73:Sri Lanka
2326:Ulhitiya
2306:Ratkinda
2181:Victoria
2166:Samanala
2161:Rantembe
2151:Polgolla
2121:Laxapana
2057:Dams and
1751:Pali Aru
1651:Nanu Oya
1631:Maha Oya
1577:Kala Oya
1311:Northern
1237:Willwind
1099:Samanala
1073:Victoria
1063:Rantembe
1053:Polgolla
1002:Laxapana
618:. UNESCO
582:See also
559:landslip
499:spillway
455:and the
434:Laxapana
430:Mahaweli
384:Location
376:and the
305:Turbines
188:Impounds
79:Location
2246:Kantale
2141:Nilambe
2111:Kotmale
2106:Gal Oya
2101:Dyraaba
1922:Lagoons
1766:Per Aru
1685:Yan Oya
1567:Gal Oya
1378:Koolair
1363:Aggreko
1089:Gal Oya
1048:Nilambe
1038:Kotmale
410:karstic
406:Colombo
350:Sinhala
309:2 × 62
227:Creates
126:Purpose
69:Country
2344:Canals
2146:Norton
2086:Canyon
1668:Mi Oya
1544:Rivers
1383:Pettah
1316:Sampur
1129:Laugfs
1012:Norton
992:Canyon
855:
569:Impact
394:Walawe
206:Length
136:Status
1800:Lakes
1082:Other
880:(PDF)
853:S2CID
778:(PDF)
719:(PDF)
689:(PDF)
682:(PDF)
646:(PDF)
453:Japan
374:Japan
130:Power
1552:≥100
1286:KCHT
790:2012
537:Leak
432:and
344:The
335:405
322:124
155:1992
147:1986
845:doi
474:yen
370:GWh
360:in
337:GWh
2373::
1554:km
865:^
851:.
841:45
839:.
827:^
806:.
780:.
734:^
704:^
661:^
631:^
607:^
549:A
533:.
520:ha
480:.
459:.
412:.
352::
324:MW
311:MW
1500:e
1493:t
1486:v
949:e
942:t
935:v
915:.
889:.
859:.
847::
821:.
792:.
763:.
728:.
698:.
655:.
625:.
515:×
511:×
507:×
348:(
240:×
164:¥
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