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Rynfield Dam (26092821)

Gauteng

CWAC status DISCONTINUED
Authority Private
Management status UNKNOWN
Conservation status UNPROTECTED
IBA information
Ramsar information
Heritage information
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Information 

Date_registered
1993-01-22
Brief_description
Two dams, the smaller holding treated effluent from an adjacent sewage works; also some marshy areas along streams. A good variety of waterbirds occurs, including Great Crested Grebe, Goliath and Purple Herons, Little Bittern, Glossy Ibis, Black Crake and Wattled Plover, and good numbers of Purple Gallinule. Numbers of cormorants and Cattle Egret peak in summer, but Dabchick, Blackheaded Heron, Hadeda Ibis, Egyptian Goose, Moorhen, Redknobbed Coot and Greyheaded Gull are more numerous in winter. Exceptionally good counts of Reed Cormorant and Cattle Egret were recorded in summer 1997. A critical threat on the larger dam is jetski boating in the shallow headwaters, which were formerly excellent for waders but now rarely hold any birds; power boats keep to deep water at the lower end of the dam.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
1016Anas platyrhynchos11.502
256Calidris pugnax911.0013  
269Avocet, PiedRecurvirostra avosetta22.806   
67Bittern, LittleIxobrychus minutus11.001   
212Coot, Red-knobbedFulica cristata2094.87332   
50Cormorant, ReedMicrocarbo africanus231.73183   
47Cormorant, White-breastedPhalacrocorax lucidus16.7318   
203Crake, BlackZaporina flavirostra12.435
52Darter, AfricanAnhinga rufa14.6713   
95Duck, African BlackAnas sparsa11.001   
10006Duck, DomesticAnas platyrhynchos domesticus11.001
101Duck, Fulvous WhistlingDendrocygna bicolor1010.0010   
10003Duck, MuscovyCairina moschata11.001
104Duck, White-backedThalassornis leuconotus22.002   
100Duck, White-faced WhistlingDendrocygna viduata218.6361   
96Duck, Yellow-billedAnas undulata18.3623   
60Egret, Intermediate [x]Ardea intermedia12.333   
59Egret, LittleEgretta garzetta16.1419   
61Egret, Western CattleBubulcus ibis1141.45967   
10004Goose, DomesticAnser anser domesticus1515.0015
89Goose, EgyptianAlopochen aegyptiaca322.54160   
88Goose, Spur-wingedPlectropterus gambensis11.001   
4Grebe, Great CrestedPodiceps cristatus12.605   
6Grebe, LittleTachybaptus ruficollis16.1011   
288Gull, Grey-headedChroicocephalus cirrocephalus211.5446   
64Heron, BlackEgretta ardesiaca11.402   
55Heron, Black-headedArdea melanocephala121.0066   
56Heron, GoliathArdea goliath12.004   
54Heron, GreyArdea cinerea11.503   
57Heron, PurpleArdea purpurea11.142   
62Heron, SquaccoArdeola ralloides12.644   
81Ibis, African SacredThreskiornis aethiopicus110.0829   
83Ibis, GlossyPlegadis falcinellus19.1319   
84Ibis, HadadaBostrychia hagedash619.9267   
395Kingfisher, GiantMegaceryle maxima11.001
394Kingfisher, PiedCeryle rudis11.001
247Lapwing, African WattledVanellus senegallus23.007   
245Lapwing, BlacksmithVanellus armatus215.2925   
10015Mallard, HybridAnas hybrid11.001
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus419.1338   
69Night Heron, Black-crownedNycticorax nycticorax11.502   
237Plover, Kittlitz'sCharadrius pecuarius22.002   
238Plover, Three-bandedCharadrius tricollaris36.0012   
102Pochard, SouthernNetta erythrophthalma14.6014   
258Sandpiper, CommonActitis hypoleucos44.004  
251Sandpiper, CurlewCalidris ferruginea44.505  
262Sandpiper, MarshTringa stagnatilis44.505   
264Sandpiper, WoodTringa glareola14.007   
94Shoveler, CapeAnas smithii24.0010   
250Snipe, AfricanGallinago nigripennis17.8016   
85Spoonbill, AfricanPlatalea alba12.005   
270Stilt, Black-wingedHimantopus himantopus23.506   
253Stint, LittleCalidris minuta38.5014   
208Swamphen, AfricanPorphyrio madagascariensis110.6430  
99Teal, Blue-billedAnas hottentota14.5511   
98Teal, CapeAnas capensis66.006   
97Teal, Red-billedAnas erythrorhyncha213.0055   
305Tern, WhiskeredChlidonias hybrida316.2533   
304Tern, White-wingedChlidonias leucopterus1949.0079   
686Wagtail, CapeMotacilla capensis112.6745
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Wednesday 03 September 2025 10:32
FitzPatrick Institute of African Ornithology
Department of Biological Sciences - University of Cape Town

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