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Rooiwal Sewage Works (25342814)

Gauteng

CWAC status REGISTERED-COUNTED REGULARLY
Authority Private
Management status TOWN COUNCIL PROPERTY
Conservation status UNPROTECTED
IBA information
Ramsar information
Heritage information
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Information 

Date_registered
1993-01-31
Brief_description
Open sewage tanks and several shallow sedimentation ponds, with fringing reedbeds and some floating vegetation. Holds a good variety of waterbirds; counts usually total c. 500 birds but were high in summer 1993 (large numbers of Cattle Egret, Sacred Ibis, Redknobbed Coot, Ruff and Whitewinged Tern), winter 1996 (1215 Whitefaced Duck) and summer 1997 (Cattle Egret, Wood Sandpiper, Ruff and Whitewinged Tern were numerous). Exceptional concentrations of large waterbirds are reflected in relatively high biomass totals for summer 1993 and winter 1996. High counts of Yellow Wagtails in four of six summers. Mild threats are posed by the periodic invasion of alien waterplants, the periodic drainage and scraping of sedimentation dams, and human disturbance during working hours.

SppCommon nameTaxonomic nameMinAvgMaxIBASubregional
IBA
RAMSAR
1016Anas platyrhynchos11.001
72Scopus umbretta11.956   
256Calidris pugnax1228.521500  
269Avocet, PiedRecurvirostra avosetta12.756   
67Bittern, LittleIxobrychus minutus11.001   
212Coot, Red-knobbedFulica cristata586.67337   
50Cormorant, ReedMicrocarbo africanus124.26117   
47Cormorant, White-breasted Phalacrocorax lucidus111.5052   
203Crake, BlackZapornia flavirostra11.899
52Darter, AfricanAnhinga rufa17.8331   
95Duck, African BlackAnas sparsa14.2514   
10006Duck, DomesticAnas platyrhynchos11.001
101Duck, Fulvous WhistlingDendrocygna bicolor111.0672   
91Duck, Knob-billedSarkidiornis melanotos123.90127   
10014Duck, UnidentifiedN/A N/A11.252
104Duck, White-backedThalassornis leuconotus111.3337   
100Duck, White-faced WhistlingDendrocygna viduata8307.551362   
96Duck, Yellow-billedAnas undulata145.70137   
149Eagle, African FishHaliaeetus vocifer11.001
58Egret, GreatArdea alba12.335   
60Egret, IntermediateArdea intermedia11.863   
59Egret, LittleEgretta garzetta14.2715   
61Egret, Western CattleBubulcus ibis3113.45443   
86Flamingo, Greater Phoenicopterus roseus11.001   
89Goose, EgyptianAlopochen aegyptiaca219.10104   
88Goose, Spur-wingedPlectropterus gambensis13.3817   
4Grebe, Great CrestedPodiceps cristatus11.001   
6Grebe, LittleTachybaptus ruficollis472.72243   
263Greenshank, CommonTringa nebularia14.3813   
288Gull, Grey-headedChroicocephalus cirrocephalus150.00398   
287Gull, KelpLarus dominicanus3232.0032   
167Harrier, African MarshCircus ranivorus11.502
64Heron, BlackEgretta ardesiaca11.001   
55Heron, Black-headedArdea melanocephala14.9126   
56Heron, GoliathArdea goliath22.002   
54Heron, GreyArdea cinerea14.7817   
57Heron, PurpleArdea purpurea12.6110   
62Heron, SquaccoArdeola ralloides16.8035   
63Heron, StriatedButorides striata12.395   
81Ibis, African SacredThreskiornis aethiopicus235.15151   
83Ibis, GlossyPlegadis falcinellus145.68650 500 
84Ibis, Hadada Bostrychia hagedash111.5641   
228Jacana, AfricanActophilornis africanus16.2717   
395Kingfisher, GiantMegaceryle maxima11.503
397Kingfisher, MalachiteCorythornis cristatus11.001
394Kingfisher, PiedCeryle rudis12.8510
247Lapwing, African WattledVanellus senegallus18.9237   
245Lapwing, BlacksmithVanellus armatus382.33340   
509Martin, Brown-throatedRiparia paludicola11.001
210Moorhen, CommonGallinula chloropus15.3929   
172Osprey, WesternPandion haliaetus11.001
241Plover, GreyPluvialis squatarola22.002   
237Plover, Kittlitz'sCharadrius pecuarius28.7521   
238Plover, Three-bandedCharadrius tricollaris16.9735   
102Pochard, SouthernNetta erythrophthalma275.78548500250460
282Pratincole, Black-wingedGlareola nordmanni8585.0085 50 
258Sandpiper, CommonActitis hypoleucos15.8631  
251Sandpiper, CurlewCalidris ferruginea218.3350  
262Sandpiper, MarshTringa stagnatilis13.6121   
264Sandpiper, WoodTringa glareola143.08288   
90Shelduck, South AfricanTadorna cana11.001   
94Shoveler, CapeSpatula smithii18.5074   
250Snipe, AfricanGallinago nigripennis33.003   
85Spoonbill, AfricanPlatalea alba12.754   
270Stilt, Black-wingedHimantopus himantopus336.93116   
253Stint, LittleCalidris minuta165.82450   
78Stork, Abdim'sCiconia abdimii2121.0021   
79Stork, BlackCiconia nigra33.003   
80Stork, WhiteCiconia ciconia66.006  1
76Stork, Yellow-billedMycteria ibis11.001   
208Swamphen, AfricanPorphyrio madagascariensis12.837  
884Swan, MuteCygnus olor22.002
99Teal, Blue-billedSpatula hottentota14.0015   
98Teal, CapeAnas capensis14.7427   
97Teal, Red-billedAnas erythrorhyncha127.06135   
290Tern, CaspianHydroprogne caspia22.002   
305Tern, WhiskeredChlidonias hybrida11.001   
304Tern, White-wingedChlidonias leucopterus1147.00751   
274Thick-knee, WaterBurhinus vermiculatus22.002   
10008Wader, UnidentifiedN/A N/A240240.00240
685Wagtail, African PiedMotacilla aguimp14.2315
686Wagtail, CapeMotacilla capensis223.2671
689Wagtail, Western YellowMotacilla flava214.8347
FITZ logo Ramsar Wetlands International http://www.sanbi.org/

Wednesday 01 February 2023 12:26
FitzPatrick Institute of African Ornithology
Department of Biological Sciences - University of Cape Town

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