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Cowles Dam (26132828)

Gauteng

CWAC status REGISTERED-COUNTS SUSPENDED
Authority Private
Management status PRIVATE LAND
Conservation status UNPROTECTED
IBA information SA021 - BLESBOKSPRUIT
Ramsar information
Heritage information
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Information 

Date_registered
1993-01-17
Brief_description
Part of the Blesbokspruit Ramsar site; a dam, reedbeds, and marsh. With the exception of Southern Pochard and Fulvous Duck (high counts in summer 1994), waterfowl are more numerous in winter. In summer 1993 there were exceptional numbers of Ruff, Greyheaded Gull and White- winged Tern; the winter 1993 count shows large numbers of Dabchick, Sacred Ibis, Yellowbilled Duck, Redbilled Teal and Cape Shoveller; Moorhen were especially numerous in summer 1995, when the high summer biomass reflects the presence of 325 Greater Flamingo; flamingos are otherwise commoner in winter. Formerly an excellent site, but total counts and number of species are declining. In 1997 a large informal settlement was established on the eastern boundary; hunting and fishing are a severe threat; domestic dogs and cats an important threat. Reed encroachment is another big problem. In 2009 counts were suspended due to Sappi closing the area to the public for security reasons.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
72Scopus umbretta11.001   
256Calidris pugnax171.82707  
269Avocet, PiedRecurvirostra avosetta27.0018   
67Bittern, LittleIxobrychus minutus13.677   
212Coot, Red-knobbedFulica cristata1896.29280   
50Cormorant, ReedMicrocarbo africanus18.4337   
47Cormorant, White-breasted Phalacrocorax lucidus17.4845   
202Crake, Baillon'sZapornia pusilla11.001
203Crake, BlackZapornia flavirostra15.0717
52Darter, AfricanAnhinga rufa11.553   
95Duck, African BlackAnas sparsa22.002   
101Duck, Fulvous WhistlingDendrocygna bicolor236.25222   
91Duck, Knob-billedSarkidiornis melanotos33.003   
103Duck, MaccoaOxyura maccoa16.0018   
104Duck, White-backedThalassornis leuconotus17.3319   
100Duck, White-faced WhistlingDendrocygna viduata119.8079   
96Duck, Yellow-billedAnas undulata232.41259   
60Egret, IntermediateArdea intermedia25.6711   
59Egret, LittleEgretta garzetta11.833   
61Egret, Western CattleBubulcus ibis112.7538   
86Flamingo, Greater Phoenicopterus roseus178.00325   
87Flamingo, LesserPhoeniconaias minor1263.00127   
89Goose, EgyptianAlopochen aegyptiaca115.67156   
88Goose, Spur-wingedPlectropterus gambensis11.803   
5Grebe, Black-neckedPodiceps nigricollis18.3820   
4Grebe, Great CrestedPodiceps cristatus15.8215   
6Grebe, LittleTachybaptus ruficollis224.32203   
263Greenshank, CommonTringa nebularia11.252   
288Gull, Grey-headedChroicocephalus cirrocephalus116.35168   
167Harrier, African MarshCircus ranivorus11.252
64Heron, BlackEgretta ardesiaca11.503   
69Heron, Black-crowned NightNycticorax nycticorax14.3312   
55Heron, Black-headedArdea melanocephala15.1925   
56Heron, GoliathArdea goliath11.001   
54Heron, GreyArdea cinerea11.705   
57Heron, PurpleArdea purpurea12.075   
62Heron, SquaccoArdeola ralloides13.448   
63Heron, StriatedButorides striata11.001   
81Ibis, African SacredThreskiornis aethiopicus124.44132   
83Ibis, GlossyPlegadis falcinellus118.2962   
84Ibis, Hadada Bostrychia hagedash25.3919   
397Kingfisher, MalachiteCorythornis cristatus11.402
394Kingfisher, PiedCeryle rudis11.142
247Lapwing, African WattledVanellus senegallus13.787   
245Lapwing, BlacksmithVanellus armatus114.8066   
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus217.47119   
361Owl, MarshAsio capensis11.332
233Plover, Common RingedCharadrius hiaticula22.002   
238Plover, Three-bandedCharadrius tricollaris13.5810   
102Pochard, SouthernNetta erythrophthalma259.03441 250 
197Rail, AfricanRallus caerulescens14.009-1
258Sandpiper, CommonActitis hypoleucos12.003  
251Sandpiper, CurlewCalidris ferruginea22.002  
262Sandpiper, MarshTringa stagnatilis14.8310   
264Sandpiper, WoodTringa glareola16.3020   
94Shoveler, CapeSpatula smithii226.73122   
250Snipe, AfricanGallinago nigripennis112.2531   
85Spoonbill, AfricanPlatalea alba11.672   
270Stilt, Black-wingedHimantopus himantopus111.7939   
253Stint, LittleCalidris minuta16.0010   
208Swamphen, AfricanPorphyrio madagascariensis15.8336  
99Teal, Blue-billedSpatula hottentota231.0586   
98Teal, CapeAnas capensis110.6155   
97Teal, Red-billedAnas erythrorhyncha128.13150   
305Tern, WhiskeredChlidonias hybrida13.0010   
304Tern, White-wingedChlidonias leucopterus135.38240   
10008Wader, UnidentifiedN/A N/A22.002
686Wagtail, CapeMotacilla capensis15.9520
FITZ logo Ramsar Wetlands International http://www.sanbi.org/

Wednesday 01 February 2023 11:37
FitzPatrick Institute of African Ornithology
Department of Biological Sciences - University of Cape Town

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