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Vanderkloof Dam: Main Section (30102455)

Northern Cape

CWAC status REGISTERED-COUNTED IRREGULARLY
Authority Northern Cape Department of Tourism, Environment and Conservation
Management status UNKNOWN
Conservation status UNKNOWN
IBA information
Ramsar information
Heritage information
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Information 

Date_registered
1996-08-01
Brief_description
A very large, state-owned impoundment on the Orange River, partly within the Rolfontein and Doornkloof Nature Reserves. Shoreline character variable, depending on water level: when level low, muddy substrate in bays is exposed; when dam full, water reaches base of Karoo koppies. No submergent vegetation, hence lack of Redknobbed Coot: only 1 recorded, in summer. Cormorant, Darter, and Goliath Herons breed, as probably do Egyptian Goose and Yellowbilled Duck. Counts in winter 1996 and summer 1997, when water level was high, produced very few shorebirds but small to good numbers of 30 waterfowl species. Cormorant, Darter, heron and egret numbers peaked in summer, when a count of 112 Darter was noteworthy. Egyptian Goose was common in both seasons, but Yellowbilled Duck was commoner in winter; summer also produced small numbers of six shorebird species. A noteworthy feature was the total of eight Fish Eagles on both counts; several pairs breed here. No threats have been identified. The count comprises sections 1, 2 & 3 of the northern area of the dam. It stretches from the wall upstream to just past Hondeblaf River.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
212Coot, Red-knobbedFulica cristata11.001   
50Cormorant, ReedPhalacrocorax africanus1030.7558   
47Cormorant, White-breastedPhalacrocorax carbo413.4030   
52Darter, AfricanAnhinga rufa1467.60112   
95Duck, African BlackAnas sparsa22.002   
91Duck, CombSarkidiornis melanotos11.001   
10014Duck, UnidentifiedN/A N/A55.005
104Duck, White-backedThalassornis leuconotus44.004   
100Duck, White-facedDendrocygna viduata1010.0010   
96Duck, Yellow-billedAnas undulata147.20178   
61Egret, CattleBubulcus ibis88.008   
149Fish-eagle, AfricanHaliaeetus vocifer25.808
89Goose, EgyptianAlopochen aegyptiacus90280.20404   
263Greenshank, CommonTringa nebularia22.002   
72Hamerkop, HamerkopScopus umbretta11.001   
55Heron, Black-headedArdea melanocephala11.502   
56Heron, GoliathArdea goliath322.2077   
54Heron, GreyArdea cinerea113.2529   
84Ibis, HadedaBostrychia hagedash12.504   
395Kingfisher, GiantMegaceryle maximus11.001
394Kingfisher, PiedCeryle rudis34.506
245Lapwing, BlacksmithVanellus armatus15.5010   
509Martin, Brown-throatedRiparia paludicola11.001
172Osprey, OspreyPandion haliaetus12.003
237Plover, Kittlitz'sCharadrius pecuarius11.001   
238Plover, Three-bandedCharadrius tricollaris44.004   
256Ruff, RuffPhilomachus pugnax77.007  
258Sandpiper, CommonActitis hypoleucos44.004  
90Shelduck, South AfricanTadorna cana713.3317   
94Shoveler, CapeAnas smithii22.002   
85Spoonbill, AfricanPlatalea alba110.3316   
79Stork, BlackCiconia nigra22.002   
98Teal, CapeAnas capensis77.007   
685Wagtail, African PiedMotacilla aguimp711.6717
686Wagtail, CapeMotacilla capensis413.0019
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Wednesday 20 September 2017 09:37
© Animal Demography Unit 2015
Department of Biological Sciences - University of Cape Town

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