| These lakes are the result of gravel
workings in the 1920s. Now they are surrounded by trees and are a peaceful
refuge for both wildlife and people.
The three lakes are quite different from one another: one is fed by the River Colne, one is relatively still and deep and the smallest has partially developed into marshy woodland. A variety of land and water birds can be found here. Great crested grebes can be seen on the lake, along with tufted duck, whilst in the alder trees flocks of siskin can be seen feeding with mixed flocks of finches and tits. The range of habitats, from open water through wet woodland into dry grassland, offer suitable conditions for many different plants. These range from emergent plants such as fringed water lily in the deeper water. Twenty-one species of tree and shrub have been recorded including five species of willow. The freehold to the reserve was donated to the Trust by Lafarge Ltd in 1977. |
 The reserve is managed in order to maintain and enhance the diversity
of species, particularly around the margins of the lake. More open conditions
are created to encourage vegetation which is vital for aquatic insects such
as damselflifes and dragonflies.
Access to the reserve has been improved with a path network suitable for people with disabilities. A leaflet is available here. |
| Visiting |
 On the B5378 (Shenley Lane) from London Colney to Shenley turn
left into the car park just before the British Legion huts. |
 Trains to St Albans; bus to High Street, London Colney. |
 Accessible at all times. |
 All year |
 Pathway and viewing are over the lakes suitable for
wheelchairs. |
 Wellingtons recommended. |