Geograph - photograph every grid square

The stream seen here flows into the north end of Black Park Lake. A Buckinghamshire County Council notice-board nearby explains recent work in the area. Birch, rhododendron and bamboo have been systematically removed, to give the best possible chance to the alders - which thrive in these very soggy conditions. As the notice says, 'Wet alder woodland is increasingly rare habitat in the UK'.

While extensive stands of alder are unusual in this country, alders are often a picturesque element along lake-shores: TQ1478 : The lake at Osterley Park: alder trees growing with their feet in water.