The park covers Gop³o lake and surroundings, as well as the Skulskie lakes (Skulskie, Skulska Wie, Czartowo) that are part of the Noteæ river system. Gop³o lake (25 km long) has flat, unforested shores with extensive beds of reed Phragmites. There are some islands (25 ha), covered mainly with reed. The surrounding area is covered mainly by wet meadows, fields and small forests.
During autumn passage a total of 20,000 or more waterbirds stage regularly at the site, mainly wildfowl, and especially geese Anser. Breeding species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (one pair). A total of 198 species have been recorded, including 74 waterbirds.
Pressure/threats to key biodiversity
The drainage of adjoining land has resulted in a lower water-level in the lake. Agriculture has resulted in nutrient pollution of the lake, through fertilizer run-off from fields. Reed-harvesting is also a threat (`Other'). Fisheries, angling and sailing cause disturbance to birds, and hunting is a problem.
National High International None402 ha of IBA covered by 7 Nature Reserves (Bachorze; B¹bule; K¹ty Kickowskie; Potrzymionek; Trzciny Gi¿ewskie; Zatoka Bia³a Osoba; Zatoka Sucha; total area 402 ha). 12,684 ha of IBA covered by Landscape Park (Nadgoplañski Park Tysi¹clecia, 12,684 ha).