Rissington Lake

5 March 2019

Rissington lake contains water.

Open Water Safety Advice

During the summer months and in particular in hot weather, Thames Valley Police would like to remind our residents of the dangers of open water. Open water includes ponds, lakes, rivers, reservoirs, quarries, docks and beaches.

It is important people make the most of the weather and enjoy the water but do so safely and sensibly.

Spot the dangers

Water may look safe, but it can be dangerous. Learn to spot and keep away from dangers. You may swim well in a warm indoor pool, but that does not mean that you will be able to swim in cold water.

The dangers of water include:

• very cold temperatures
• strong hidden currents
• steep slippery banks – making it difficult to get out
• deep water – which can change and be unpredictable
• hidden rubbish or objects, e.g. shopping trolleys, broken glass
• there are no lifeguards
• it may be polluted and may make you ill

Make sure you:

• stay out of water unless you know it’s safe
• don’t jump into the water from heights, e.g. bridges
• have access to safety equipment
• never enter the water alone
• never swim under the influence of drugs or alcohol
• look out for warning signs and advice in the area
• keep dogs on leads when you are walking near water
• avoid walking or running near water in the dark

If someone is in difficulty in the water reassure them, shout for help and call the emergency services on 999

For more information on water safety visit the Royal Life Saving Society website.

25 January 2019

8 November 2018

The enclosed report from the Drainage Officer is very enlightening:

From: Laurence King
Sent: 26 October 2018 13:18 To: Deborah Smith
Subject: FW: Consultation for 17/04151/FUL

I am sending this response after attending a site meeting at this development with a representative from Bovis Homes. We carried out an inspection of the attenuation pond currently being constructed and the landscaped area in the vicinity of the Airfield and raised Calor Gas storage tanks.

After studying the plans for the attenuation pond and viewing the site, including the existing above ground foul sewer line, I can report that due to the on-going discussions between Bovis and Albion water concerning the required spillway from the attenuation area (which are preventing WSP finalising the design of the critical spillway from the pond) I am currently unable to approve the design of the attenuation pond.

Additionally, it is not clear which party will become the landowner of the land where the attenuation pond is sited, as well as which party will be responsible for its maintenance.

It was noted that some of the Gabions laid in the attenuation pond had been laid in the wrong alignment. Bovis will address that asap.

The landscape area clearly appeared to be a construction site and therefore until decisions have been made on the permanent surfacing of the footpaths a construction detail for them cannot be produced. The issue of run-off from the un-finished pathways did not appear to be a flood risk concern for the new development, the airfield or the Calor Gas storage area. An inspection of the completed pathways will be required to ensure that the current situation is maintained.

The aspect of whether the material in the landscaping will remain stable, due to the inability of water to percolate through the punctured existing concrete, does not appear to be a significant concern due to the relatively significant area of landscaping involved and its general height above the existing concrete apron. A planting schedule will be produced that will assist in further stabilisation of the area through root growth, in addition to the trees and shrubs drawing up any water “sat” in the made up areas due to a reduced rate of percolation through the punctured concrete.

I understand that a maintenance company will be employed to oversee the landscaped areas but again I am unclear as to which party will own the land where the landscaping is.

Regards,
Laurence King
Lead Shared Flood Risk Management Engineer
email: laurence.king@westoxon.gov.uk  or telephone:  01993 861341.

17 October 2018

29 August 2018

Today,  plans have appeared on the CDC planning portal, this time regarding Rissington Lake. Click here to the planning portal if required.

16 August 2018

A few more pictures of Rissington Lake and its perimeter footpath being constructed of Hoggin. There is also evidence of trees cut down and trimmed to allow for the construction of the path.

1 August 2018

Construction of a lakeside footpath has begun. Should mean the horrible Heras fencing is soon removed.

12 July 2018

Rissington Lake with Gabons

Second liner in place and now coated with top soil.

31 May 2018

The liner is nearly in place. Next the water and the fish…….this is one awesome lake!

29 May 2018

We are pleased to report that the Attenuation Pond is being lined, ready for lots of carp and trout.

16 May 2018

Work is continuing on the Attenuation Pond. Hopefully, landscaping and lining within the next few weeks.

Source of the information below is here.

The attenuation pond has been slightly remodelled and now contains water. Lots of brown pictures. 🙂 🙂

This pond was intended to supply grey water to the development (for flushing toilets).

There has been a delivery of pipes and storage tanks to supply yet grey water for the new development.

17 November 2017

29 September 2017

August 2017

23 July 2017

Description

Retention ponds can provide both stormwater attenuation and treatment. They are designed to support emergent and submerged aquatic vegetation along their shoreline.

Runoff from each rain event is detained and treated in the pool. The retention time promotes pollutant removal through sedimentation and the opportunity for biological uptake mechanisms to reduce nutrient concentrations.

Advantages & disadvantages

Advantages

  • Can cater for all storms
  • Good removal capability of urban pollutants
  • Can be used where groundwater is vulnerable, if lined
  • Good community acceptability
  • High potential ecological, aesthetic and amenity benefits
  • May add value to local properties.

Disadvantages

  • No reduction in runoff volume
  • Anaerobic conditions can occur without regular inflow
  • Land take may limit use in high density sites
  • May not be suitable for steep sites, due to requirement for high embankments
  • Colonisation by invasive species could increase maintenance
  • Perceived health & safety risks may result in fencing and isolation of the pond.

Where component can be used

  • Residential: Yes
  • Commercial/industrial: Yes
  • High density: Unlikely
  • Retrofit: Unlikely
  • Contaminated sites: Yes (with liner)
  • Sites above vulnerable groundwater: Yes (with liner)

Performance

  • Peak flow reduction: Good
  • Volume reduction: Poor
  • Water quality treatment: Good
  • Amenity potential: Good
  • Ecology potential: Good

Quantity
Ponds can be designed to control flow rates by storing floodwater and releasing it slowly once the risk of flooding has passed (also known as a balancing pond). The stored water will change the water level, and ponds should be designed to function in both dry and wet weather. Quantity can also be influenced by the amount of water that can be allowed to infiltrate into the ground if there is no risk to groundwater quality.

Quality
Ponds treat runoff in a variety of ways:

  • settlement of solids in still water. Having plants in the water enhances calm conditions and promotes settlement
  • adsorption by aquatic vegetation
  • biological activity

Amenity
Ponds offer many opportunities for the landscape designer. Permanently wet ponds can be used to store water for reuse, and offer excellent opportunities for the provision of wildlife habitats. Ponds can be part of public open space.

Maintenance

  • Litter/debris removal
  • Inlet/outlet cleaning
  • Vegetation management
  • Sediment monitoring and removal when required.

Date: April 2015