2024 Bathing Water Profile for Henleaze Lake
-
Henleaze Lake is situated in the Bristol suburb of Henleaze, 3 miles from the city centre. This former quarry is approximately four hundred metres long and thirty metres wide, with an average depth of three metres increasing to six metres under the diving area. Swimming access is via pontoons and diving boards at the southern end of the lake. There is no beach at the lake; however a lawn area exists at the southern end, a steep rock face around the north and eastern edges and a wooded bank on the west shore. The lake is entirely spring-fed and has a variety of recreational uses, principally swimming and angling. The Lake is open to members and their guests only, from May to September
-
City of Bristol
-
Bristol
-
There are no emergency or storm overflow discharges into Henleaze Lake
-
There is a highway drain manhole which can overflow during heavy rain events, causing surface water to enter the lake via the gradient of the road and club driveway.
-
Surveys completed in December 2013 and during the summer of 2015 found no misconnections that could be impacting on the water quality in Henleaze Lake.
-
For the four year (2020-2023) assessment period where data is available, phytoplankton (microscopic algae) was not assessed as being sufficient to be objectionable, but was observed as being present on 5% of visits. Phytoplankton (microscopic algae) increase in number at certain times of the year. This process is known as a phytoplankton bloom. Blooms of phytoplankton can result in the water appearing discoloured or foam forming on the water. If you observe a suspected bloom you are advised to not enter the water and to contact your local authority health contact for help and advice.
-
There are no active pollution risk forecasts made at this bathing water. However any bathing water has the potential to be affected by a pollution incident and if this occurs a pollution risk warning with associated advice against bathing will be issued on this website.
-
2024 Bathing Water Profile for Henleaze Lake
-
2024-09-30
-
2024-05-01
-
Henleaze Lake is not directly connected to any streams or rivers, although it is possible a groundwater connection exists with the River Trym to the north west and the Hen stream to the south west.
-
There are no sewage discharges into Henleaze Lake
-
Environment Agency samplers make observations of litter present on the beach at every visit, this includes assessments of sewage debris, litter and tar. At Henleaze Lake for the four year (2020-2023) assessment period where data is available, sewage debris was not noted at this site. Litter was not assessed as being sufficient to be objectionable, but was observed as being present on 5% of visits. Tarry residue was not noted at this site.
-
Henleaze Lake is groundwater fed and is not known to be impacted by any watercourses.
-
Henleaze Lake
-
Henleaze Lake
-
Sampling point at Henleaze Lake
-
358047
-
51.49462281893482
-
-2.605706908746493
-
177472
-
Sampling point at Henleaze Lake
-
-
-
p152 dT23 h59 m59 s
-
2024 05 01 t00:00:00
-
2024-05-01T00:00:00
-
-
2024 09 30 t23:59:59
-
2024-09-30T23:59:59
-
-
-
2024 36050:1
-
Seaweed (macroalgae) and phytoplankton (microscopic algae) are a natural part of the marine and freshwater environment. Below we note whether these have been recorded in quantities sufficient to be a nuisance.
-
The majority of sewers in England are “combined sewers” and carry both sewage and surface water from roofs and drains. A storm overflow operates during heavy rainfall when the sewerage system becomes overwhelmed by the amount of surface water. The overflow prevents sewage from backing up pipes and flooding properties and gardens. An emergency overflow will only operate infrequently, for example due to pump failure or blockage in the sewerage system.
-
Heavy rain falling on pavements and roads often flows into surface water drains or highway drains, ending up in local rivers and ultimately the sea. The quality of bathing water may be adversely affected as a result of such events.
-
It is the Environment Agency role to drive improvement of water quality at bathing waters that are at risk of failing higher standards. It is natural for water to run off the land to the sea. Water quality at a bathing water is dependent upon the type and area of land (the catchment) draining to the water and the activities undertaken in that catchment.
-
Discharges from sewage treatment works have improved substantially in England since the 1980s.
-
