Name (Alt.) Nearest locale province Impounds Year completed(commissioned) Reservoir volume ML Surface area (km2 ) Wall height (meter) Map ref Albasini Dam Louis Trichardt Limpopo Levubu River (Luvuvhu River) 1952 28,200 [N] [ 2] 3.498 34 23°6′30″S 30°7′48″E / 23.10833°S 30.13000°E / -23.10833; 30.13000 (Albasini Dam ) Albert Falls Dam Pietermaritzburg KZN Umgeni River 1976 288,100 [N] [ 3] 23.521 33 29°26′10″S 30°23′18″E / 29.43611°S 30.38833°E / -29.43611; 30.38833 (Albert Falls Dam ) Alexandra Dam Cape Town Western Cape Disa River 1903 126 [ 4] 0.03 12.1 33°59′17″S 18°24′42″E / 33.98806°S 18.41167°E / -33.98806; 18.41167 (Alexandra Dam ) Allemanskraal Dam Ventersburg Free State Sand River 1960 174,500 [N] [ 5] 26.481 38 28°17′15″S 27°9′1″E / 28.28750°S 27.15028°E / -28.28750; 27.15028 (Allemanskraal Dam ) Alphen Dam Stellenbosch Western Cape Bonte River 1990 70 [G] [ 6] 0.8 18.3 34°00′42″S 18°52′25″E / 34.01167°S 18.87361°E / -34.01167; 18.87361 (Alphen Dam ) Arieskraal Dam Grabouw Western Cape Palmiet River 1987 17,330 1.42 34°14′40″S 18°59′03″E / 34.24444°S 18.98417°E / -34.24444; 18.98417 (Arieskraal Dam ) Armenia Dam Hobhouse Free State Leeu River 1954 13,000 [N] [ 5] 3.933 22 29°21′52″S 27°7′44″E / 29.36444°S 27.12889°E / -29.36444; 27.12889 (Armenia Dam ) Beervlei Dam Willowmore Eastern Cape Groot River 1957 85,800 [N] [ 7] 23.145 31 33°4′37″S 23°29′26″E / 33.07694°S 23.49056°E / -33.07694; 23.49056 (Beervlei Dam ) Bedford Dam NE van Reenen Pass Free State 2011 22,000 [I] [ 8] [ 9] 2.55 41 28°14′20″S 29°35′8″E / 28.23889°S 29.58556°E / -28.23889; 29.58556 (Bedford Dam ) Berg River Dam Franschhoek Western Cape Berg River 2007 130,010 [N] [ 4] 5.260 68 33°54′34″S 19°03′21″E / 33.90944°S 19.05583°E / -33.90944; 19.05583 (Berg River Dam ) Binfield Park Dam Alice, Eastern Cape Eastern Cape Tyhume River 1986 (1987) 36,830 1.870 60 32°41′55″S 26°54′18″E / 32.69861°S 26.90500°E / -32.69861; 26.90500 (Binfield Park Dam ) Bivane Dam (Paris Dam) Vryheid KZN Bivane River 2000 115,200 7 72 27°31′10″S 31°3′15″E / 27.51944°S 31.05417°E / -27.51944; 31.05417 (Bivane Dam ) Bloemhoek Dam Kroonstad Free State Jordaan Spruit 1976 26,400 2.800 28 27°38′1″S 27°17′0″E / 27.63361°S 27.28333°E / -27.63361; 27.28333 (Bloemhoek Dam ) Bloemhof Dam (Oppermansdrif) Bloemhof border North West Free State Vaal River 1970 1,240,200 [N] [ 5] 230.665 33 27°40′5″S 25°37′3″E / 27.66806°S 25.61750°E / -27.66806; 25.61750 (Bloemhof Dam ) Blyderivierpoort Dam Hoedspruit Mpumalanga Blyde River 1974 54,400 [N] [ 10] 2.494 71 24°32′15″S 30°47′20″E / 24.53750°S 30.78889°E / -24.53750; 30.78889 (Blyderivierpoort Dam ) Boegoeberg Dam Prieska Northern Cape Orange River 1929 19,800 [N] [ 11] 7.423 12 29°2′30″S 22°12′13″E / 29.04167°S 22.20361°E / -29.04167; 22.20361 (Boegoeberg Dam ) Bon Accord Dam Tshwane Gauteng Apies River 1925 4,400 [N] [ 12] 1.440 18 25°37′45″S 28°11′21″E / 25.62917°S 28.18917°E / -25.62917; 28.18917 (Bon Accord Dam ) Bongolo Dam (Bonkolo) Queenstown Eastern Cape Komani River 1908 7,015 1.1 24 31°52′04″S 26°55′15″E / 31.86778°S 26.92083°E / -31.86778; 26.92083 (Bongolo Dam ) Boskop Dam Potchefstroom North West Mooi River 1959 20,840 [N] [ 13] 3.741 33 26°33′42″S 27°6′41″E / 26.56167°S 27.11139°E / -26.56167; 27.11139 (Boskop Dam ) Boschmanskop No 1 Dam Middelburg Mpumalanga Woes-Alleen River 1995 14,400 0.185 22 26°1′6″S 29°37′50″E / 26.01833°S 29.63056°E / -26.01833; 29.63056 (Boschmanskop No 1 Dam ) Bospoort Dam Rustenburg North West Hex River 1933 15,800 [N] [ 13] 3.741 28 25°33′45″S 27°21′14″E / 25.56250°S 27.35389°E / -25.56250; 27.35389 (Bospoort Dam ) Bramhoek Dam NE van Reenen Pass KZN Braamhoek Spruit 2011 22,000 [I] [ 8] 2.56 27.5 28°18′41″S 29°34′35″E / 28.31139°S 29.57639°E / -28.31139; 29.57639 (Braamhoek Dam ) Brandvlei Dam Rawsonville Western Cape Lower Brandvlei River 1983 286,040 [N] [ 14] 24.49 14 33°41′20″S 19°22′40″E / 33.68889°S 19.37778°E / -33.68889; 19.37778 (Greater Brandvlei Dam ) Bridle Drift Dam East London Eastern Cape Buffels River 1969 101,600 [N] [ 7] 7.460 55 32°59′22″S 27°43′14″E / 32.98944°S 27.72056°E / -32.98944; 27.72056 (Bridal Drift Dam ) Bronkhorstspruit Dam Bronkhorstspruit Gauteng Bronkhorst Spruit 1950 57,400 [N] [ 12] 9.609 35 25°53′15″S 28°43′15″E / 25.88750°S 28.72083°E / -25.88750; 28.72083 (Bronkhorstspruit Dam ) Buffeljags Dam Swellendam Western Cape Buffeljags River 1967 4,540 [N] [ 14] 1.269 24 34°01′07″S 20°31′58″E / 34.01861°S 20.53278°E / -34.01861; 20.53278 (Buffeljags Dam ) Buffelspoort Dam Rustenburg North West Sterkstroom River 1934 10,251 1.357 34 25°46′50″S 27°29′1″E / 25.78056°S 27.48361°E / -25.78056; 27.48361 (Buffelspoort Dam ) Ceres Koekedouw Dam Ceres Western Cape Koekedouw River 2001 17,200 1.07 60 33°21′45″S 19°16′31″E / 33.36250°S 19.27528°E / -33.36250; 19.27528 (Ceres Koekedouw Dam ) Churchill Dam (Krom River Dam) Kareedouw Eastern Cape Krom River 1943 35,500 [ 15] 2.492 43 34°00′03″S 24°29′36″E / 34.00083°S 24.49333°E / -34.00083; 24.49333 (Churchill Dam ) Clanwilliam Dam Clanwilliam Western Cape Olifants River 1935 121,800 [ 16] 11.236 43 32°11′5″S 18°52′29″E / 32.18472°S 18.87472°E / -32.18472; 18.87472 (Clanwilliam Dam ) Craigie Burn Dam Greytown KZN Mnyamvubu River 1963 22,500 [N] [ 3] 2.073 38 29°9′47″S 30°17′2″E / 29.16306°S 30.28389°E / -29.16306; 30.28389 (Craigie Burn Dam ) Dap Naudé Dam Polokwane Limpopo Broederstroom River 1958 1,900 [N] [ 2] .281 23 23°48′49″S 29°57′59″E / 23.81361°S 29.96639°E / -23.81361; 29.96639 (Dap Naude Dam ) Da Gama Dam White River Mpumalanga Witwaters River 1971 13,578 1.289 38 25°8′30″S 31°1′1″E / 25.14167°S 31.01694°E / -25.14167; 31.01694 (Da Gama Dam ) Damani Dam (Mvuwe Dame) Thohoyandou Limpopo Mbwedi River 1991 11,000 1.30 28 22°51′3″S 30°30′56″E / 22.85083°S 30.51556°E / -22.85083; 30.51556 (Damani Dam ) Darlington Dam (Lake Mentz) Kirkwood Eastern Cape Sundays River 1922 188,800 [N] [ 7] 34.527 48 33°12′22″S 25°8′59″E / 33.20611°S 25.14972°E / -33.20611; 25.14972 (Darlington Dam ) De Bos Dam Hemel En Aarde Western Cape Onus River 1994 5,740 0.43 24 34°22′05″S 19°14′01″E / 34.36806°S 19.23361°E / -34.36806; 19.23361 (De Bos Dam ) De Hoop Dam Graaff-Reinet Eastern Cape Kamdeboo River 1938 14,500 21 32°27′1″S 24°25′4″E / 32.45028°S 24.41778°E / -32.45028; 24.41778 (De Hoop Dam ) De Hoop Dam (Limpopo) Steelpoort Limpopo Steelpoort River 2014 348,700 16.9 81 24°57′27″S 29°57′23″E / 24.95750°S 29.95639°E / -24.95750; 29.95639 (De Hoop Dam ) De Villiers Dam Cape Town Western Cape Disa River 1910 243 [ 4] 28 33°59′31″S 18°24′35″E / 33.99194°S 18.40972°E / -33.99194; 18.40972 (De Villiers Dam ) Disaneng Dam Mmabatho North West Molopo River 1980 17,400 4.253 17 25°49′25″S 25°18′20″E / 25.82361°S 25.30556°E / -25.82361; 25.30556 (Disaneng Dam ) Doorndraai Dam Mokopane Limpopo Sterk River 1952 43,800 [N] [ 2] 5.606 25 24°16′45″S 28°46′1″E / 24.27917°S 28.76694°E / -24.27917; 28.76694 (Doorndraai Dam ) Doring River Dam Indwe Eastern Cape Doring River 1971 19,690 3.592 35 31°30′47″S 27°20′30″E / 31.51306°S 27.34167°E / -31.51306; 27.34167 (Doring River Dam ) Douglas Weir Douglas Northern Cape Vaal River 1977 16,700 7.991 10 29°2′37″S 23°50′11″E / 29.04361°S 23.83639°E / -29.04361; 23.83639 (Douglas Weir ) Driekloof Dam Hermanus Western Cape Klip River 1989 263 0.56 15 28°31′58.5″S 29°4′05.9″E / 28.532917°S 29.068306°E / -28.532917; 29.068306 (Driekloof Dam ) Driekloof Dam Harrismith Free State Nuwejaar Spruit 1979 32,071 [D^] 1.906 47 28°31′1″S 29°4′1″E / 28.51694°S 29.06694°E / -28.51694; 29.06694 (Driekloof Dam ) Driekoppies Dam Malelane Mpumalanga Lomati River 1998 250,900 [N] [ 10] 18.700 50 25°42′42″S 31°31′49″E / 25.71167°S 31.53028°E / -25.71167; 31.53028 (Driekoppies Dam ) Driel Barrage Bergville KZN Tugela River 1973 8700 2.99 22 28°45′46″S 29°17′27″E / 28.76278°S 29.29083°E / -28.76278; 29.29083 (Driel Barrage ) Ebenezer Dam Tzaneen Limpopo Groot Letaba River 1959 69,100 [N] [ 2] 3.862 61 23°56′30″S 29°59′1″E / 23.94167°S 29.98361°E / -23.94167; 29.98361 (Ebenezer Dam ) Egmont Dam Van Stadensrus Free State Witte Spruit 1937 9300 [N] [ 5] 2.442 25 30°03′10″S 27°01′39″E / 30.05278°S 27.02750°E / -30.05278; 27.02750 (Egmont Dam ) Eikenhof Dam Grabouw Western Cape Palmiet River 1977 28,900 [N] [ 14] 2.40 46 34°7′46″S 19°2′5″E / 34.12944°S 19.03472°E / -34.12944; 19.03472 (Eikenhof Dam ) Elandskloof Dam Villiersdorp Western Cape Elands River 1976 11,017 0.700 69 33°57′1″S 19°17′1″E / 33.95028°S 19.28361°E / -33.95028; 19.28361 (Elandskloof Dam ) Elandskuil Dam North West Swartleegte River 1969 1181 [N] [ 13] 0.45 11 26°20′34″S 26°46′42″E / 26.34278°S 26.77833°E / -26.34278; 26.77833 (Elandskuil Dam ) Emmarentia Dam Johannesburg Gauteng Braamfontein Spruit 1912 250 [G] [ 6] 0.09 11 26°09′01″S 28°00′21″E / 26.15028°S 28.00583°E / -26.15028; 28.00583 (Emmarentia Dam ) Engelhard Dam Letaba camp, Kruger National Park Limpopo Letaba River ~1975 23°50′30″S 31°38′15″E / 23.84167°S 31.63750°E / -23.84167; 31.63750 (Engelhard Dam ) Erfenis Dam Theunissen Free State Groot-Vet River 1960 206,100 [N] [ 5] 32.821 46 28°30′39″S 26°46′38″E / 28.51083°S 26.77722°E / -28.51083; 26.77722 (Erfenis Dam ) Fika-Patso Dam Phuthaditjhaba Free State Namahadi River 1987 28,000 1.585 65 28°40′20″S 28°51′24″E / 28.67222°S 28.85667°E / -28.67222; 28.85667 (Fika-Patso Dam ) Flag Boshielo Dam Marble Hall Limpopo Olifants River 1987 185,100 [N] [ 2] 12.877 36 24°47′0″S 29°25′40″E / 24.78333°S 29.42778°E / -24.78333; 29.42778 (Flag Boshielo Dam ) Floriskraal Dam Laingsburg Western Cape Buffels River 1957 50,334 7.592 33 33°17′30″S 20°59′26″E / 33.29167°S 20.99056°E / -33.29167; 20.99056 (Floriskraal Dam ) Gamkapoort Dam Prince Albert Western Cape Gamka River 1969 37,213 6.015 42 33°18′33″S 21°38′1″E / 33.30917°S 21.63361°E / -33.30917; 21.63361 (Gamkapoort Dam ) Garden Route Dam George Western Cape Swart River 1984 9,980 0.871 33°57′51″S 22°30′51″E / 33.96417°S 22.51417°E / -33.96417; 22.51417 (Garden Route Dam ) Gariep Dam (Hendrik Verwoerd Dam ) Norvalspont Free State Orange River 1971 5,340,600 [N] [ 5] 352.162 88 30°37′30″S 25°30′58″E / 30.62500°S 25.51611°E / -30.62500; 25.51611 (Gariep Dam ) Glen Alpine Dam Mokopane Limpopo Mogalakwena River 1968 18,900 [N] [ 2] 4.613 28 23°11′30″S 28°41′5″E / 23.19167°S 28.68472°E / -23.19167; 28.68472 (Glen Alpine Dam ) Glen Melville Dam Grahamstown Eastern Cape Orange–Fish River Tunnel 1992 6,300 [ 17] 33°11′6″S 26°39′19″E / 33.18500°S 26.65528°E / -33.18500; 26.65528 (Glen Melville Reservoir ) Goedertrouw Dam Eshowe KZN Mhlatuze River 1982 301,300 [ 18] 11.939 88 28°46′17″S 31°28′7″E / 28.77139°S 31.46861°E / -28.77139; 31.46861 (Goedertrouw Dam ) Grassridge Dam Hofmeyer Eastern Cape Great Brak River 1924 46,200 14.145 24 31°45′30″S 25°28′1″E / 31.75833°S 25.46694°E / -31.75833; 25.46694 (Grassridge Dam ) Grey Dam Grahamstown Eastern Cape Bloukrans River 1859 68 [ 17] 33°19′29″S 26°31′40″E / 33.32472°S 26.52778°E / -33.32472; 26.52778 (Grey Dam ) Groendal Dam Uitenhage Eastern Cape Swartkops River 1934 12,100 0.960 33°42′26″S 25°15′57″E / 33.70722°S 25.26583°E / -33.70722; 25.26583 (Groendal Dam ) Grootdraai Dam Standerton Mpumalanga Vaal River 1981 349,500 [N] [ 10] 38.813 42 26°55′9″S 29°17′1″E / 26.91917°S 29.28361°E / -26.91917; 29.28361 (Grootdraai Dam ) Gubu Dam Stutterheim Eastern Cape Gubu River 1971 8,666 1.1 26 32°36′35″S 27°16′41″E / 32.60972°S 27.27806°E / -32.60972; 27.27806 (Gubu Dam ) Hartbeespoort Dam Brits North West Crocodile River 1925 186,400 [N] [ 13] 20.652 59 25°43′33″S 27°50′55″E / 25.72583°S 27.84861°E / -25.72583; 27.84861 (Hartbeespoort Dam ) Hazelmere Dam Hazelmere KZN Mdloti River 1977 37,133 1.813 50 29°36′1″S 31°2′30″E / 29.60028°S 31.04167°E / -29.60028; 31.04167 (Hazelmere Dam ) Hellsgate Dam Uitenhage Eastern Cape Klip River 1910 120 26 Hely-Hutchinson Dam Cape Town Western Cape Disa River 1904 925 [ 4] 0.16 33°58′38″S 18°24′28″E / 33.97722°S 18.40778°E / -33.97722; 18.40778 (Hely-Hutchinson Dam ) Heyshope Dam Piet Retief Mpumalanga Assegaai River 1983 451,300 [N] [ 10] 50.238 29 26°59′45″S 30°31′50″E / 26.99583°S 30.53056°E / -26.99583; 30.53056 (Heyshope Dam ) Hluhluwe Dam Hluhluwe KZN Hluhluwe River 1965 25,900 3.64 33 28°7′19″S 32°10′45″E / 28.12194°S 32.17917°E / -28.12194; 32.17917 (Hluhluwe Dam ) Holo Hlahatse Dam Jozana's Hoek Sterkspruit Eastern Cape Hlatimnyama and Mhlangeni Rivers 10,000 0.8 30 30°38′12″S 27°22′11″E / 30.63667°S 27.36972°E / -30.63667; 27.36972 (Holo Hlahatse Dam ) Howieson's Poort Dam (Howison's Poort) Grahamstown Eastern Cape Kariega River 1931 227 [ 17] 33°23′9″S 26°28′59″E / 33.38583°S 26.48306°E / -33.38583; 26.48306 (Howieson's Poort Dam ) Impofu Dam Humansdorp Eastern Cape Krom River 1982 105,800 [N] [ 7] 6.350 75 34°5′44″S 24°41′25″E / 34.09556°S 24.69028°E / -34.09556; 24.69028 (Impofu Dam ) Inanda Dam Hillcrest KZN Umgeni River 1989 241,700 [N] [ 3] 14.633 65 29°42′1″S 30°52′1″E / 29.70028°S 30.86694°E / -29.70028; 30.86694 (Inanda Dam ) Injaka Dam (also spelled Inyaka) Hazyview Mpumalanga Marite River 2002 123,700 [N] [ 10] 8.111 53 24°53′6″S 31°5′5″E / 24.88500°S 31.08472°E / -24.88500; 31.08472 (Injaka Dam ) Jericho Dam Amsterdam Mpumalanga Mpama River 1966 59,500 9.825 22 26°39′15″S 30°29′10″E / 26.65417°S 30.48611°E / -26.65417; 30.48611 (Jericho Dam ) J.L. de Bruin Dam Burgersdorp Eastern Cape Klein Buffel River 1982 1696 0.06 15 31°01′44″S 26°37′25″E / 31.02889°S 26.62361°E / -31.02889; 26.62361 (J.L. de Bruin Dam ) Kalkfontein Dam Koffiefontein Free State Riet River 1938 325,100 [N] [ 5] 37.697 36 29°29′45″S 25°13′20″E / 29.49583°S 25.22222°E / -29.49583; 25.22222 (Kalkfontein Dam ) Kammanassie Dam De Rust Western Cape Kammanassie River 1923 35,870 3.516 35 33°38′39″S 22°24′31″E / 33.64417°S 22.40861°E / -33.64417; 22.40861 (Kammanassie Dam ) Katrivier Dam Seymour Eastern Cape Kat River 1969 24,690 2.129 55 32°34′15″S 26°45′1″E / 32.57083°S 26.75028°E / -32.57083; 26.75028 (Katrivier Dam ) Katse Dam Lesotho Malibamat'so River 1996 1,950,000 35.80 185 29°20′13″S 28°30′22″E / 29.33694°S 28.50611°E / -29.33694; 28.50611 (Katse Dam ) Keerom Dam Worcester Western Cape Nuy River 1954 10,400 [ 16] 1.17 40 33°35′10″S 19°42′27″E / 33.58611°S 19.70750°E / -33.58611; 19.70750 (Keerom Dam ) Kettingspruit Dam Mpumalanga tributary of Ketting Spruit 2006 70,000 0.027 8.5 24°10′10″S 30°31′0″E / 24.16944°S 30.51667°E / -24.16944; 30.51667 (Kettingspruit Dam ) Kilburn Dam Bergville KZN Mnjaneni River 1981 35,577 [D] 1.947 51 28°35′25″S 29°6′15″E / 28.59028°S 29.10417°E / -28.59028; 29.10417 (Kilburn Dam ) Kleinplaats Dam Simon's Town Western Cape 1,368 [ 4] 0.24 Klerkskraal Dam Ventersdorp North West Mooi River 1965 7,900 [N] [ 13] 3.773 15 26°13′59″S 27°08′55″E / 26.23306°S 27.14861°E / -26.23306; 27.14861 (Klerkskraal Dam ) Klipberg Dam McGregor Western Cape Konings River 1964 1,980 0.26 29 33°56′29″S 19°47′36″E / 33.94139°S 19.79333°E / -33.94139; 19.79333 (Klipberg Dam ) Klipdrif Dam Potchefstroom North West Loop Spruit 1918 13,300 [N] [ 13] 4.713 12 26°37′0″S 27°18′1″E / 26.61667°S 27.30028°E / -26.61667; 27.30028 (Klipdrif Dam ) Klipfontein Dam Vryheid KZN White Mfolozi River 1983 18,080 2.95 28 27°50′11″S 30°48′51″E / 27.83639°S 30.81417°E / -27.83639; 30.81417 (Klipfontein Dam ) Klipkoppie Dam White River Mpumalanga White River 1960 12,256 2.354 20 25°13′1″S 31°1′10″E / 25.21694°S 31.01944°E / -25.21694; 31.01944 (Klipkoppie Dam ) Klipvoor Dam Brits North West Pienaars River 1970 47,000 7.532 30 25°7′54″S 27°48′33″E / 25.13167°S 27.80917°E / -25.13167; 27.80917 (Klipvoor Dam ) Knellpoort Dam Wepener Free State Riet Spruit 1988 130,000 [N] [ 5] 9.854 50 29°46′54″S 26°53′19″E / 29.78167°S 26.88861°E / -29.78167; 26.88861 (Knellpoort Dam ) Kogelberg Dam Grabouw Western Cape Palmiet River 1986 17,330 [P] [ 16] 1.428 54 34°12′57″S 18°58′31″E / 34.21583°S 18.97528°E / -34.21583; 18.97528 (Kogelberg Dam ) Kommandodrif Dam Cradock Eastern Cape Tarka River 1956 58,114 8.820 39 32°7′1″S 26°3′9″E / 32.11694°S 26.05250°E / -32.11694; 26.05250 (Kommandodrif Dam ) Koppies Dam Koppies Free State Renoster River 1911 42,300 [N] [ 5] 13.622 25 27°15′25″S 27°40′15″E / 27.25694°S 27.67083°E / -27.25694; 27.67083 (Koppies Dam ) Korintepoort Dam Krantz Kloof Western Cape Korinte River 1966 8,090 1.029 16 34°00′17″S 21°09′56″E / 34.00472°S 21.16556°E / -34.00472; 21.16556 (Korenteport Dam ) Kouga Dam (Paul Sauer Dam ) Patensie Eastern Cape Kouga River 1969 125,900 [N] [ 7] 5.545 81 33°44′28″S 24°35′18″E / 33.74111°S 24.58833°E / -33.74111; 24.58833 (Kouga Dam ) Kromfonteinlower (Wilge) Cofferdam Witbank Mpumalanga Steenkool Spruit 1992 13,000 0.300 17 26°5′0″S 29°15′30″E / 26.08333°S 29.25833°E / -26.08333; 29.25833 (Kromfonteinlower (Wilge) Cofferdam ) Kromfontein Middle Cofferdam Witbank Mpumalanga Steenkool Spruit 1990 18,000 16 26°7′0″S 29°15′20″E / 26.11667°S 29.25556°E / -26.11667; 29.25556 (Kromfontein Middle Cofferdam ) Krugersdrift Bloemfontein Free State Modder River 1970 66,000 18.525 26 28°53′1″S 25°57′30″E / 28.88361°S 25.95833°E / -28.88361; 25.95833 (Krugersdrift ) Kruismansrivier Dam Western Cape Kruismans River 1997 1,500 0.18 18 32°44′35″S 18°50′10″E / 32.74306°S 18.83611°E / -32.74306; 18.83611 (Kruismansrivier Dam ) Kwaggaskloof Dam Worcester Western Cape Wabooms River 1975 169,410 [N] [ 14] 16.12 18 33°45′46″S 19°28′18″E / 33.76278°S 19.47167°E / -33.76278; 19.47167 (Kwaggaskloof Dam ) Kwene Dam (Braam Raubenheimer Dam) Lydenburg Mpumalanga Crocodile River 1987 158,900 [N] [ 10] 12.504 52 25°21′45″S 30°22′30″E / 25.36250°S 30.37500°E / -25.36250; 30.37500 (Kwena Dam ) Lady Grey Dam Lady Grey Eastern Cape Wilgespruit 1925 153 0.018 23 30°42′41″S 27°14′26″E / 30.71139°S 27.24056°E / -30.71139; 27.24056 (Lady Grey Dam ) Laing Dam East London Eastern Cape Buffalo River 1951 19,860 2.038 45 32°57′59″S 27°29′22″E / 32.96639°S 27.48944°E / -32.96639; 27.48944 (Laing Dam ) Lake Arthur Dam Cradock Eastern Cape Tarka River 1924 10,700 8.867 38 32°13′1″S 25°49′45″E / 32.21694°S 25.82917°E / -32.21694; 25.82917 (Lake Arthur Dam ) Lake Mzingazi Dam Richards Bay KZN Mzingazi River 1942 37,000 11.000 8 28°46′1″S 32°5′1″E / 28.76694°S 32.08361°E / -28.76694; 32.08361 (Lake Mzingazi Dam ) Lakenvallei Dam Ceres Western Cape Sanddrifskloof River 1974 10,300 [N] [ 14] 0.825 56 33°22′0″S 19°34′52″E / 33.36667°S 19.58111°E / -33.36667; 19.58111 (Lakenvallei Dam ) Land-en-Zeezicht Dam Helderberg Western Cape 451 [ 4] Leeu-Gamka Dam Beaufort West Western Cape Leeuw River 1958 13,600 4.258 15 32°37′23″S 22°00′13″E / 32.62306°S 22.00361°E / -32.62306; 22.00361 (Leeu-Gamka Dam ) Lewis Gay Dam Simon's Town Western Cape 182 [ 4] Lindleyspoort Dam Swartruggens North West Elands River 1943 14,381 1.801 39 25°29′50″S 26°41′32″E / 25.49722°S 26.69222°E / -25.49722; 26.69222 (Lindleyspoort Dam ) Loskop Dam Groblersdal Mpumalanga Olifants River 1939 361,500 [N] [ 10] 24.277 54 25°25′1″S 29°21′1″E / 25.41694°S 29.35028°E / -25.41694; 29.35028 (Loskop Dam ) Lubisi Dam Qamata Eastern Cape Indwe River 1968 158,000 [N] [ 7] 11.290 52 31°47′45″S 27°25′0″E / 31.79583°S 27.41667°E / -31.79583; 27.41667 (Lubisi Dam ) Luphephe Dam Musina Limpopo Luphephe River 1963 14,000 [N] [ 2] 1.416 42 22°38′4″S 30°24′8″E / 22.63444°S 30.40222°E / -22.63444; 30.40222 (Luphephe Dam ) Madikwe Dam Madikwe North West Thulane River 1976 14,000 4.318 17 25°23′36″S 26°35′51″E / 25.39333°S 26.59750°E / -25.39333; 26.59750 (Madikwe Dam ) Makuleke Dam Giyani Limpopo Mphongolo River 1990 13,000 0.750 22 22°52′3″S 30°54′18″E / 22.86750°S 30.90500°E / -22.86750; 30.90500 (Makuleke Dam ) Marico-Bosveld Dam Groot Marico North West Groot Marico River 1933 27,813 4.376 34 25°28′15″S 26°23′50″E / 25.47083°S 26.39722°E / -25.47083; 26.39722 (Marico-Bosveld Dam ) Metz Dam Trichardsdal Limpopo Mortladime River 385 0.55 18 Middelburg Dam Middelburg Mpumalanga Klein Olifants River 1978 48,435 4.680 36 25°46′31″S 29°32′46″E / 25.77528°S 29.54611°E / -25.77528; 29.54611 (Middelburg Dam ) Middle Letaba Dam Giyani Limpopo Middle Letaba River 1984 171,900 [ 19] 18.787 34 23°16′26″S 30°24′12″E / 23.27389°S 30.40333°E / -23.27389; 30.40333 (Middle Letaba Dam ) Midmar Dam Howick KZN Umgeni 1965 235,400 [N] [ 3] 15.643 32 29°29′43″S 30°12′1″E / 29.49528°S 30.20028°E / -29.49528; 30.20028 (Midmar Dam ) Misverstand Dam Porterville Western Cape Berg River 1977 6,400 [N] [ 14] 2.552 26 33°01′32″S 18°47′20″E / 33.02556°S 18.78889°E / -33.02556; 18.78889 (Misverstand Dam ) Modderpoort Dam Beaufort West Northern Cape Rietfontein River 1953 10,000 0.125 15 31°56′43″S 22°8′40″E / 31.94528°S 22.14444°E / -31.94528; 22.14444 (Modderpoort Dam ) Mohale Dam Lesotho Senqunyane River 2002 938,000 22.0 144 29°27′24″S 28°05′45″E / 29.45667°S 28.09583°E / -29.45667; 28.09583 (Mohale Dam ) Mokolo Dam (Hans Strijdom Dam) Lephalale Limpopo Mokolo River 1980 145,400 [N] [ 2] 8.288 57 23°58′30″S 27°43′1″E / 23.97500°S 27.71694°E / -23.97500; 27.71694 (Mokolo Dam (Hans Strijdom Dam) ) Molatedi Dam Zeerust North West Marico River 1986 200,800 [N] [ 13] 35.670 23 24°52′13″S 26°27′1″E / 24.87028°S 26.45028°E / -24.87028; 26.45028 (Molatedi Dam ) Molteno Dam Cape Town Western Cape Table Mountain rivers 1881 3,000 [N] 0.36 15 33°56′18″S 18°24′43″E / 33.93833°S 18.41194°E / -33.93833; 18.41194 (Molteno Dam ) Morgenstond Dam Amsterdam Mpumalanga Ngwempisi River 1978 100,773 9.772 43 26°42′40″S 30°32′41″E / 26.71111°S 30.54472°E / -26.71111; 30.54472 (Morgenstond Dam ) Moutloatsi Setlogelo Dam (Groothoek) Thaba Nchu Free State Kgabanyane River 1981 12,000 2.5 29 29°18′12″S 26°50′49″E / 29.30333°S 26.84694°E / -29.30333; 26.84694 (Moutloatsi Setlogelo Dam ) Mthatha Dam Mthatha Eastern Cape Mthatha River 1977 253,674 25.417 18 31°33′2″S 28°44′24″E / 31.55056°S 28.74000°E / -31.55056; 28.74000 (Mtata Dam ) Mutshedzi Dam Thohoyandou Limpopo Mutshedzi River 1990 2,300 [N] [ 2] 0.392 25 22°56′55″S 30°9′40″E / 22.94861°S 30.16111°E / -22.94861; 30.16111 (Mutshedzi Dam ) Nagle Dam Cato Ridge KZN Umgeni River 1950 23,200 [N] [ 3] 1.561 46 29°35′1″S 30°37′1″E / 29.58361°S 30.61694°E / -29.58361; 30.61694 (Nagle Dam ) Nahoon Dam East London Eastern Cape Nahoon River 1966 19,934 2.347 44 32°54′36″S 27°48′55″E / 32.91000°S 27.81528°E / -32.91000; 27.81528 (Nahoon Dam ) Nandoni Dam Thohoyandou Limpopo Levuvhu River 2004 166,100 [N] [ 2] 15.700 47 22°58′51″S 30°35′53″E / 22.98083°S 30.59806°E / -22.98083; 30.59806 (Nandoni Dam ) Ncora Dam Tsomo Eastern Cape Tsomo River 1975 150,100 [N] [ 7] 13.920 44 31°47′15″S 27°40′1″E / 31.78750°S 27.66694°E / -31.78750; 27.66694 (Ncora Dam ) Ngodwana Dam Nelspruit Mpumalanga Ngodwana River 1984 10,400 8.660 47 25°35′1″S 30°40′5″E / 25.58361°S 30.66806°E / -25.58361; 30.66806 (Ngodwana Dam ) Ngotwane Dam Lobatieng North West Ngotwane River 1982 18,800 3.900 19 25°11′56″S 25°48′47″E / 25.19889°S 25.81306°E / -25.19889; 25.81306 (Ngotwane Dam ) Nooitgedacht Dam (Vygeboom) Carolina Mpumalanga Komati River 1962 78,400 [N] [ 10] 4.630 42 25°57′1″S 30°5′1″E / 25.95028°S 30.08361°E / -25.95028; 30.08361 (Nooitgedacht Dam ) Nsami Dam (Hudson Ntsanwisi Dam) Giyani Limpopo Nsama River 1976 21,900 5.15 24 23°15′16″S 30°46′14″E / 23.25444°S 30.77056°E / -23.25444; 30.77056 (Nsami Dam ) Nqweba Dam (Previously Vanryneveld's Pass Dam) Graaff-Reinet Eastern Cape Sundays River 1925 46,369 10.285 32°14′8″S 24°31′41″E / 32.23556°S 24.52806°E / -32.23556; 24.52806 (Nqweba Dam (Previously Vanryneveld's Pass Dam) ) Nwanedi Dam Musina Limpopo Nwanedi River 1964 5,100 [N] [ 2] 0.56 36 22°38′6″S 30°23′56″E / 22.63500°S 30.39889°E / -22.63500; 30.39889 (Nwanedi Dam ) Ntshingwayo Dam (Chelmsford Dam) Newcastle KZN Nsama River 1961 194,600 [N] [ 3] 34.412 27°57′12″S 29°57′0″E / 27.95333°S 29.95000°E / -27.95333; 29.95000 (Ntshingwayo Dam ) Nzhelele Dam Musina Limpopo Nzhelele River 1948 51,200 [N] [ 2] 5.442 47 22°43′29″S 30°5′43″E / 22.72472°S 30.09528°E / -22.72472; 30.09528 (Nzhelele Dam ) Ohrigstad Dam Ohrigstad Mpumalanga Ohrigstad River [ 20] 1955 13,400 [ 20] [N] [ 10] 0.99 52 24°55′59″S 30°37′54″E / 24.93306°S 30.63167°E / -24.93306; 30.63167 (Ohrigstad Dam ) Olifantsnek Dam Rustenburg North West Hex River 1928 14,200 2.548 31 25°47′3″S 27°15′52″E / 25.78417°S 27.26444°E / -25.78417; 27.26444 (Olifantsnek Dam ) Oliphantskop Dam Ladysmith KZN Sondagsrivier 1984 0,000 0.000 16 28°28′5″S 30°3′23″E / 28.46806°S 30.05639°E / -28.46806; 30.05639 (Oliphantskop Dam ) Oudebaaskraal Dam Ceres Western Cape Tankwa River 1969 34,000 8.000 21 32°23′26″S 19°53′35″E / 32.39056°S 19.89306°E / -32.39056; 19.89306 (Oudebaaskraal Dam ) Oxkraal Dam Queenstown Eastern Cape Oxkraal River 1989 14,900 [N] [ 7] 2.2 30 32°12′43″S 26°45′12″E / 32.21194°S 26.75333°E / -32.21194; 26.75333 (Oxkraal Dam ) Phiphidi Dam Thohoyandou Limpopo Mutshindudi River 1971 187,355 16 Pietersfontein Dam Montagu Western Cape Pietersfontein River 1968 1,984 0.033 18 33°40′12″S 20°00′59″E / 33.67000°S 20.01639°E / -33.67000; 20.01639 (Pietersfontein Dam ) Pongolapoort Dam Jozini KZN Pongola River 1973 2,267,100 [N] [ 3] 132.728 89 27°25′15″S 32°4′30″E / 27.42083°S 32.07500°E / -27.42083; 32.07500 (Pongolapoort Dam ) Poortjieskloof Dam Montagu Western Cape Groot River 1955 9,700 [N] [ 14] 1.029 38 33°51′30″S 20°22′16″E / 33.85833°S 20.37111°E / -33.85833; 20.37111 (Poortjieskloof Dam ) Potchefstroom Dam Potchefstroom North West Mooi River 1950 2,027 0.77 8 26°40′12″S 27°5′50″E / 26.67000°S 27.09722°E / -26.67000; 27.09722 (Potchefstroom Dam ) Qedusizi Dam Ladysmith KZN Klip River 1998 194,000 2.5 28°32′30″S 29°44′41″E / 28.54167°S 29.74472°E / -28.54167; 29.74472 (Qedusizi Dam ) Rhenosterkop Dam Marble Hall Mpumalanga Elands River 1984 204,600 [N] [ 10] 62.400 25°5′55″S 28°55′5″E / 25.09861°S 28.91806°E / -25.09861; 28.91806 (Rhenosterkop Dam ) Rietvlei Dam Tshwane Gauteng Rietvlei River, a tributary to the Hennops River 1933 12,300 [N] [ 12] [ 21] 1.890 21 25°52′36″S 28°15′57″E / 25.87667°S 28.26583°E / -25.87667; 28.26583 (Rietvlei Dam ) Rockview Dam Grabouw Western Cape Palmiet River 1986 16,630 [P] [ 22] 0.775 48 34°11′30″S 18°57′17″E / 34.19167°S 18.95472°E / -34.19167; 18.95472 (Rockview Dam ) Roodekoppies Dam Brits North West Crocodile River 1984 103,000 15.710 25 25°24′15″S 27°35′29″E / 25.40417°S 27.59139°E / -25.40417; 27.59139 (Roodekoppies Dam ) Roodeplaat Dam Tshwane Gauteng Pienaars River 1959 41,200 [N] [ 12] 3.952 59 25°37′15″S 28°22′1″E / 25.62083°S 28.36694°E / -25.62083; 28.36694 (Roodeplaat Dam ) Rust de Winter Dam Pretoria Limpopo Elands River 1934 28,200 4.73 31 25°14′0″S 28°31′3″E / 25.23333°S 28.51750°E / -25.23333; 28.51750 (Rust de Winter Dam ) Rustfontein Dam Thaba Nchu Free State Modder River 1955 72,200 11.585 36 29°16′15″S 26°37′1″E / 29.27083°S 26.61694°E / -29.27083; 26.61694 (Rustfontein Dam ) Sandile Dam Keiskammahoek Eastern Cape Keiskamma River 1983 30,960 1.460 61 32°43′0″S 27°6′4″E / 32.71667°S 27.10111°E / -32.71667; 27.10111 (Sandile Dam ) Settlers Dam Grahamstown Eastern Cape Kariega River 1962 5,300 [ 17] 1.01 21 33°24′42″S 26°30′34″E / 33.41167°S 26.50944°E / -33.41167; 26.50944 (Settlers Dam ) Setumo Dam Mmabatho North West Molopo River 1995 19,600 4.473 17 25°51′30″S 25°30′1″E / 25.85833°S 25.50028°E / -25.85833; 25.50028 (Setumo Dam ) Shongweni Dam (Ntshongweni Dam) Hillcrest KZN Sterkspruit and Wekeweke Rivers 1927 2,200 0.3 39 29°51′25″S 30°43′20″E / 29.85694°S 30.72222°E / -29.85694; 30.72222 (Shongweni Dam ) Silvermine Dam Cape Town Western Cape 1898 82 0.04 9 34°4′31″S 18°23′56″E / 34.07528°S 18.39889°E / -34.07528; 18.39889 (Silvermine Dam ) Slangdraai Dam Ladysmith KZN Sundays River 1986 10,300 2.400 28°14′24″S 29°44′58″E / 28.24000°S 29.74944°E / -28.24000; 29.74944 (Slangdraai Dam ) Smartt Dam Britstown Northern Cape Ongers River 1912 100,300 31.569 30°36′48″S 23°18′2″E / 30.61333°S 23.30056°E / -30.61333; 23.30056 (Smartt Dam ) Sol Plaatje Dam (Previously Saulspoort Dam) Bethlehem Free State Liebenbergsvlei River 1968 15,676 3.560 24 28°13′1″S 28°22′1″E / 28.21694°S 28.36694°E / -28.21694; 28.36694 (Sol Plaatjie Dam ) Spioenkop Dam Bergville KZN Tugela River 1973 270,600 [N] [ 3] 15.314 53 28°40′53″S 29°31′1″E / 28.68139°S 29.51694°E / -28.68139; 29.51694 (Spioenkop Dam ) Spitskop Dam Schmidtsdrift Northern Cape Harts River 1974 57,800 [ 11] 25.312 18 28°7′29″S 24°30′9″E / 28.12472°S 24.50250°E / -28.12472; 24.50250 (Spitskop Dam ) Spring Grove Dam Nottingham Road KZN Mooi River 2013 139,300 10.2 32 29°19′23″S 29°56′38″E / 29.32306°S 29.94389°E / -29.32306; 29.94389 (Spring Grove Dam ) Steenbras Dam (lower) Gordons Bay Western Cape Steenbras River 1921 33517 [ 4] 3.642 37 34°11′15″S 18°51′4″E / 34.18750°S 18.85111°E / -34.18750; 18.85111 (Steenbras Dam ) Steenbras Upper Dam Gordons Bay Western Cape Steenbras River 1977 31767 [S] [ 4] 2.750 37 34°10′5″S 18°54′5″E / 34.16806°S 18.90139°E / -34.16806; 18.90139 (Steenbras Dam – Upper ) Steenbras Hydro-Electric Lower Dam Gordons Bay Western Cape Sir Lowry's Pass River 1977 3,560 [S] 0.35 31 34°8′50″S 18°54′0″E / 34.14722°S 18.90000°E / -34.14722; 18.90000 (Steenbras Hydro-Electric Lower Dam ) Sterkfontein Dam Harrismith Free State Nuwejaar Spruit 1980 2,616,900 [N] [ 5] 67.260 93 28°23′15″S 29°1′10″E / 28.38750°S 29.01944°E / -28.38750; 29.01944 (Sterkfontein Dam ) Stettynskloof Dam Worcester Western Cape Holsloot River 1955 14,700 [N] [ 14] 1.004 48 33°50′14″S 19°15′8″E / 33.83722°S 19.25222°E / -33.83722; 19.25222 (Stettynskloof Dam ) Stompdrift Dam De Rust Western Cape Olifants River 1965 46,270 6.203 49 33°30′45″S 22°35′8″E / 33.51250°S 22.58556°E / -33.51250; 22.58556 (Stompdrift Dam ) Taung Dam Taung North West Harts River 1993 58,900 4.650 44 27°31′35″S 24°51′16″E / 27.52639°S 24.85444°E / -27.52639; 24.85444 (Taung Dam ) Theewaterskloof Dam Villiersdorp Western Cape Riviersonderend River 1978 480188 [N] [ 14] [ 4] 51.204 38 34°4′45″S 19°17′1″E / 34.07917°S 19.28361°E / -34.07917; 19.28361 (Theewaterskloof Dam ) Tierpoort Dam Bloemfontein Free State Tierpoort River 1990 34,000 9.11 20 29°25′20″S 26°08′10″E / 29.42222°S 26.13611°E / -29.42222; 26.13611 (Tierpoort Dam ) Trichardtsfontein Dam Trichardt Mpumalanga Trichardt Spruit 1981 15,200 2.459 26 26°29′53″S 29°14′1″E / 26.49806°S 29.23361°E / -26.49806; 29.23361 (Trichardtsfontein Dam ) Tsojana Dam Cofimvaba Eastern Cape Tsojana River 1978 12,340 2.360 23 31°53′0″S 27°38′1″E / 31.88333°S 27.63361°E / -31.88333; 27.63361 (Tsojana Dam ) Tweedraai Dam Trichardt Mpumalanga Trichardt Spruit 1991 16,000 2.370 21 26°25′45″S 29°13′0″E / 26.42917°S 29.21667°E / -26.42917; 29.21667 (Tweedraai Dam ) Tzaneen Dam (previously Fanie Botha Dam) Tzaneen Limpopo Groot Letaba River 1977 157,291 11.636 50 23°47′37″S 30°9′48″E / 23.79361°S 30.16333°E / -23.79361; 30.16333 (Tzaneen Dam ) Vaal Barrage Vanderbijlpark Gauteng Vaal River 1923 [ 23] 56,712 13.485 10 26°45′53″S 27°41′30″E / 26.76472°S 27.69167°E / -26.76472; 27.69167 (Vaal Barrage ) Vaal Dam Deneysville Free State Gauteng Vaal River 1939 2,603,400 [N] [ 5] 322.755 63 26°53′1″S 28°7′20″E / 26.88361°S 28.12222°E / -26.88361; 28.12222 (Vaal Dam ) Vaalharts Storage Weir Warrenton North West Vaal River 1936 48,700 [ 11] 1.189 12 28°06′55″S 24°55′32″E / 28.11528°S 24.92556°E / -28.11528; 24.92556 (Vaalharts Storage Weir ) Vaalkop Dam Beestekraal North West Elands River , Hex River 2010 53,500 [ 24] 11.1 33 25°18′37″S 27°28′33″E / 25.31028°S 27.47583°E / -25.31028; 27.47583 (Vaalkop Dam ) Vanderkloof Dam (previously P.K. Le Roux Dam) Petrusville Northern Cape , Free State Orange River 1977 3,171,300 [N] [ 5] 133.402 108 29°59′29″S 24°43′55″E / 29.99139°S 24.73194°E / -29.99139; 24.73194 (Vanderkloof Dam ) Vanwyksvlei Dam Vanwyksvlei Northern Cape Vanwyksvlei 1884 143,081 49.934 15 30°22′46″S 21°48′41″E / 30.37944°S 21.81139°E / -30.37944; 21.81139 (Vanwyksvlei Dam ) Victoria Dam Cape Town Western Cape Disa River 1895 128 [ 4] 0.05 6 33°59′11″S 18°24′29″E / 33.98639°S 18.40806°E / -33.98639; 18.40806 (Victoria Dam ) Voëlvlei Dam Gouda Western Cape Voëlvlei Lake [V] 1971 164095 [N] [ 14] [ 4] 15.730 10 33°20′15″S 19°2′1″E / 33.33750°S 19.03361°E / -33.33750; 19.03361 (Voëlvlei Dam ) Vondo Dam Sibasa Limpopo Mutshundudi River 1982 30,540 2.19 47 22°56′45″S 30°20′7″E / 22.94583°S 30.33528°E / -22.94583; 30.33528 (Vondo Dam ) Vygeboom Dam Badplaas MP Komati River 1971 83,000 [N] [ 25] 6.7 45 25°52′53″S 30°37′9″E / 25.88139°S 30.61917°E / -25.88139; 30.61917 (Vygeboom Dam ) Wagendrift Dam Estcourt KZN Bushmans River 1963 55,900 [N] [ 3] 5.084 41 29°2′15″S 29°51′1″E / 29.03750°S 29.85028°E / -29.03750; 29.85028 (Wagendrift Dam ) Waterdown Dam Whittlesea Eastern Cape Klipplaat River 1958 38,400 2.608 44 32°17′15″S 26°51′1″E / 32.28750°S 26.85028°E / -32.28750; 26.85028 (Waterdown Dam ) Welbedacht Dam Wepener Free State Caledon River 1973 10,200 [N] [ 5] 10.185 32 29°54′34″S 26°51′37″E / 29.90944°S 26.86028°E / -29.90944; 26.86028 (Welbedacht Dam ) Wemmershoek Dam Franschhoek Western Cape Wemmers River 1957 58644 [N] [ 14] [ 4] 2.960 53 33°50′1″S 19°5′20″E / 33.83361°S 19.08889°E / -33.83361; 19.08889 (Wemmershoek Dam ) Westoe Dam Amsterdam Mpumalanga Usutu River 1968 61,900 7.333 26 26°30′15″S 30°37′5″E / 26.50417°S 30.61806°E / -26.50417; 30.61806 (Westoe Dam ) Witbank Dam Witbank Mpumalanga Olifants River 1971 104,000 [N] [ 10] 12.112 44 25°53′30″S 29°19′1″E / 25.89167°S 29.31694°E / -25.89167; 29.31694 (Witbank Dam ) Witklip Dam Sabie Mpumalanga Sand River 1969 12,970 1.875 21 25°14′10″S 30°54′1″E / 25.23611°S 30.90028°E / -25.23611; 30.90028 (Witklip Dam ) Wolwedans Dam Mossel Bay Western Cape Great Brak River 1990 25,530 1.100 70 34°0′51″S 22°13′44″E / 34.01417°S 22.22889°E / -34.01417; 22.22889 (Wolwedans Dam ) Woodhead Dam Cape Town Western Cape Disa River 1897 954 [ 4] 0.16 38 33°58′38″S 18°24′8″E / 33.97722°S 18.40222°E / -33.97722; 18.40222 (Woodhead Dam ) Woodstock Dam Bergville KZN Tugela River 1983 373,300 [N] [ 3] 29.129 49 28°45′31″S 29°14′46″E / 28.75861°S 29.24611°E / -28.75861; 29.24611 (Woodstock Dam ) Wriggleswade Dam Stutterheim Eastern Cape Kubusi River 1991 93,200 10.000 35 32°34′1″S 27°35′0″E / 32.56694°S 27.58333°E / -32.56694; 27.58333 (Wriggleswade Dam ) Xilinxa Dam Idutywa Eastern Cape Xilinxa River 1972 13,900 2.81 25 32°08′32″S 28°05′57″E / 32.14222°S 28.09917°E / -32.14222; 28.09917 (Xilinxa Dam ) Xonxa Dam Queenstown Eastern Cape White Kei River 1974 115,900 [N] [ 7] 12.881 49 31°51′0″S 27°11′13″E / 31.85000°S 27.18694°E / -31.85000; 27.18694 (Xonxa Dam ) Zaaihoek Dam Wakkerstroom Mpumalanga Slang River 1988 184,600 [N] [ 3] 12.446 46 27°26′1″S 30°4′30″E / 27.43361°S 30.07500°E / -27.43361; 30.07500 (Zaaihoek Dam )