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Location Czech Republic, South Moravia
Central coordinates 16o 36.00' East  48o 54.00' North
IBA criteria A1, A4i, A4iii, B1i, B2, C1, C3, C4, C6
Area 1,047 ha
Altitude 172 - 180m
Year of IBA assessment 2002

Czech Society for Ornithology

Site description The Nové Mlýny Middle Reservoir (VDNM) is situated at the confluence of three Moravian rivers: the Dyje, Svratka, and Jihlava, surrounded by the towns of Dolní Vìstonice, Strachotín, Ivaò, and Pasohlávky. The area that was once covered by floodplain forests. The only remaining part of the village of Musov, now covered by water, is a small church with Romanesque foundations, which catches the eye as it emerges from the middle of the reservoir. The bottom of the reservoir was flattened only at some places before the reservoir was filled up with water. Thus the reservoir varies in depth and small islets emerge whenever the water level drops by just a little. At the current constant level (170.35 m above sea level), about 20 ha of islets in two main groupings emerge above the water: Nine islets at Dolní Vìstonice (so-called Písky) covering about 10 ha, and islets Kostelní, Høbitovní, Ivaòský and a complex of six depositions surrounding the Musov church and covering about 8 ha. At the above-mentioned constant water level, the area of the reservoir is 1,013 ha.

Key Biodiversity The area is an important breeding site, wintering site and migration stopover of migrating waterbirds - more than 20,000 waterbirds gather there regularly. The area is an important breeding site, wintering site and migration stopover of migrating waterbirds - more than 20,000 waterbirds gather there regularly.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bean Goose Anser fabalis winter  1997-2002  1,000-5,500 individuals  good  A4i, B1i, C3  Least Concern 
Greater White-fronted Goose Anser albifrons winter  1997-2002  2,000-12,000 individuals  good  A4i, B1i, C3  Least Concern 
Greylag Goose Anser anser passage  1998-2002  700-3,500 individuals  good  A4i, B1i, C3  Least Concern 
Red-crested Pochard Netta rufina breeding  1991-1996  20-30 breeding pairs  good  B2  Least Concern 
White-tailed Sea-eagle Haliaeetus albicilla winter  1996-2004  18-32 individuals  good  A1, C1  Least Concern 
Common Tern Sterna hirundo breeding  1991-1996  97-274 breeding pairs  good  C6  Least Concern 
A4iii Species group - waterbirds unknown  20,000 individuals  unknown  A4iii, C4   

IBA Monitoring

2010 not assessed unfavourable not assessed
Good - based on reliable and complete / representative data

Anser anser Greylag Goose 2100 1400 individuals 67 unfavourable
Haliaeetus albicilla White-tailed Sea-eagle 25 19 individuals 76 near favourable
Sterna hirundo Common Tern 186 89 breeding pairs 48 unfavourable

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Mokrady dolního Podyjí (floodplain of lower Dyje River) Wetlands of International Importance (Ramsar) 11,500 protected area contains site 1,048  
Vestonicka nadrz /Musov/ Nature Reserve 1,017 protected area contained by site 1,017  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater  90%
Artificial - terrestrial Arable land; Ruderal land  4%
Shrubland   4%
Forest   2%

Land use

Land-use Extent (% of site)
fisheries/aquaculture 97%
hunting -
nature conservation and research 100%
water management 100%

Protection status Almost 97% of this IBA belongs to the Vìstonická nádr Nature Reserve and it is a part of a Ramsar site. (Wetlands of the Lower Dyje River, 11,500 ha). SPA Stredni nadrz Vodniho dila Nove Mlyny designed (1048 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Nove Mlyny middle reservoir. Downloaded from on 25/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife