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Location Morocco, Ouarzazate
Central coordinates 6o 46.00' West  30o 56.00' North
IBA criteria A1, A4i
Area 5,000 ha
Altitude 1,200 m
Year of IBA assessment 2001

Groupe de Recherche pour la Protection des Oiseaux au Maroc (Affiliate)

Site description The site is located on the southern side of the High Atlas a few kilometres east of the town of Ouarzazate. It consists of a large reservoir formed in 1972 by the construction of a hydroelectric dam on the Oued Drâa, near the confluence of the Oued Dadès and the Oued Ouarzazate. The reservoir is also fed by many small temporary side-streams. Where these enter the lake, the water is relatively shallow and dense vegetation of Cynodon dactylon, Cyperus spp., Juncus spp., Phragmites australis and Tamarix canariensis occurs. Elsewhere, the water depth drops off sharply, reaching 2–4 m deep only several metres from the rocky shore. Annual precipitation averages 1,500 mm.

Key Biodiversity See Box for key species. The site is chiefly notable for its populations of summer visitors, such as Marmaronetta angustirostris and Tadorna ferruginea, both of which exceed IBA thresholds. A few pairs of Marmaronetta angustirostris have bred; Tadorna ferruginea breeds regularly, but numbers of pairs are unknown. Wintering populations of waterfowl are small, although some 20 species have been recorded. The most abundant is Tadorna ferruginea, with up to 400 individuals noted.

Non-bird biodiversity: The toad Bufo brongersmai, a Moroccan endemic, occurs.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Ruddy Shelduck Tadorna ferruginea winter  400-700 individuals  A4i  Least Concern 
Marbled Teal Marmaronetta angustirostris passage  187 individuals  A1, A4i  Vulnerable 

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
hunting -
water management -
other -
Notes: Reed-cutting.

References BCEOM-SECA (1995b).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Barrage al Mansour Ad-Dhabi. Downloaded from on 27/10/2016

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