In the years 2008-2014 we researched dragonflies in a gravel-pit Párnica in the Orava region. During the research 2047 specimens of dragonflies were collected. There were 26 species confirmed there, 22 of them were autochthonous. Erythromma najas, Platycnemis pennipes, Ischnura elegans, Enallagma cyathigerum Coenagrion puella belong to the highest category of the dominance (D>10 %). During the process of habitat selection the above mentioned species prefer the gravel-pits. From the protection point of view the most important taxa is Leucorrhinia caudalis. The Párnica gravel-pit belongs to the regional biocentre of dragonflies on the basis of their assesment.