Heyshope Dam: Bay 10 (26593027) | |
|---|---|
Mpumalanga | |
| CWAC status | REGISTERED-COUNTS SUSPENDED |
| Authority | Private |
| Management status | STATE IMPOUNDMENT |
| Conservation status | UNKNOWN |
| IBA information | SA020 - GRASSLAND BIOSPHERE RESERVE |
| Ramsar information | |
| Heritage information | |
| View Cards | Click here |
Information |
|---|
| Date_registered |
| 1994-06-18 |
| Brief_description |
| A large, state-owned storage dam in the Assegaai River catchment, surrounded by agricultural land (beef and maize production). Shoreline gently sloping; either heavily grazed or with rank grass and weeds. A proposed Ramsar site which holds extremely large numbers of at least 52 waterbird species, concentrated in the 17 bays where rivers enter the dam. Small areas which are regularly counted hold up to 45 000 waterbirds; the entire system may hold 100 000. In drought years the dam provides a refuge for birds from surrounding pans, including Lake Chrissie. Only one CWAC count available, for winter 1992, when only small sections of the dam were visited but nationally significant numbers of Yellowbilled Duck and Cape Shoveller were recorded, plus high counts of Dabchick, cormorants, ducks, geese, and shorebirds (including some Palaearctic species). Eutrophication, resulting from inflow of agricultural fertilisers, is a potential problem. Other problems could be posed by opencast coal mining and afforostation in the catchment areas. This important site should be monitored on a regular basis. |
| Spp | Common name | Taxonomic name | Min | Avg | Max | IBA | Subregional IBA | RAMSAR |
|---|---|---|---|---|---|---|---|---|
| 212 | Coot, Red-knobbed | Fulica cristata | 14 | 14.00 | 14 | |||
| 50 | Cormorant, Reed | Microcarbo africanus | 247 | 247.00 | 247 | |||
| 104 | Duck, White-backed | Thalassornis leuconotus | 104 | 104.00 | 104 | |||
| 96 | Duck, Yellow-billed | Anas undulata | 61 | 61.00 | 61 | |||
| 4 | Grebe, Great Crested | Podiceps cristatus | 4 | 4.00 | 4 | |||
| 6 | Grebe, Little | Tachybaptus ruficollis | 25 | 25.00 | 25 | |||
| 54 | Heron, Grey | Ardea cinerea | 2 | 2.00 | 2 | |||
| 245 | Lapwing, Blacksmith | Vanellus armatus | 3 | 3.00 | 3 | |||
| 102 | Pochard, Southern | Netta erythrophthalma | 19 | 19.00 | 19 | |||
| 94 | Shoveler, Cape | Spatula smithii | 2 | 2.00 | 2 | |||
| 97 | Teal, Red-billed | Anas erythrorhyncha | 3 | 3.00 | 3 |
Friday 19 April 2024 01:02
FitzPatrick Institute of African Ornithology
Department
of Biological Sciences - University of Cape Town
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