A large lake in the Colne Valley which supports huge numbers of waterbirds.
Of the four lakes within the Mid Colne Valley SSSI, Broadwater Lake is by far the biggest and is one of the largest expanses of open water in the Colne Valley. The nature reserve includes Korda Lake, Long Pond, the River Colne and the western side of Broadwater Lake. The reserve is nationally important for its bird populations. Wintering birds include great crested grebe, cormorant, gadwall, shoveler, tufted duck, pochard, wigeon, teal, goldeneye, smew, ruddy duck and coot. The first five species have been present above the level of national importance in recent years, while gadwall have also exceeded the level of international significance.