Lake Sirdsezers is located in the north of Lībagu parish of Talsu county, in the territory of Talsi Hillock Nature Park.
Area of water surface – 2.4 hectare
Average depth – 5.8 metre(s)
Maximum depth – 14.5 metre(s)
Metres above mean sea level (MAMSL) – 120.2 metre(s)
Populated places on the coasts – Sukturi