Stay in touch and find out the latest news, information, and activities and more from Windermere. ⇒ Sign up today  ⇐

Science and Data

Understanding Windermere’s health requires robust science and data to inform meaningful action. By leveraging knowledge, we can identify the complex challenges facing Windermere from nutrient pollution, climate change and land use pressures to develop targeted solutions.

Dr Surridge explains more about the value of the Big Windermere Survey

Nutrient enrichment has been a significant challenge over the last two centuries, causing an increase in algal blooms and deoxygenation of the lake at depth.

The UK Centre for Ecology & Hydrology (UKCEH) took over monitoring the lake from the Freshwater Biological Association in the late 1980s and these datasets are immensely important for showing how conditions in Windermere have changed over time.  There are however still many questions to be answered, especially surrounding the mechanisms affecting nutrient cycling in the lake, the effects of climate change, and how other potential stressors may affect lake ecology.

We are working with other independent scientific experts including Lancaster University and the UK Centre for Ecology & Hydrology to start to answer some of these questions and develop research programmes to help us better understand how and why Windermere is changing. We will be using the best available evidence to address the following questions:

  • Where are key nutrient sources in the catchment and how can we manage these?
  • How do bacterial concentrations, which can potentially impact human health, vary throughout the catchment?
  • What role may nutrients recycled from lakebed sediments play in affecting water quality?

As our research progresses and we have findings to share, these will be communicated on this website.

Useful sources of information

Here you will find key reports, external links and guidelines to help you explore the topic further and stay informed. These resources have been selected for their reliability and relevance, providing you with access to publications and expert insights.

Sediment Reports

The three reports were written by UK Centre for Ecology and Hydrology and commissioned by the Environment Agency on behalf of the Love Windermere Partnership to explore how nutrients held within lakebed sediments affect the water quality of Windermere and other lakes in the Windermere catchment. 

Blue Green Algae explainer: https://consult.environment-agency.gov.uk/cumbria-and-lancashire/blue-green-algae-in-cumbria-and-lancashire/

Current data on water quality and ecology from Environment Agency:  https://environment.data.gov.uk/catchment-planning

The Big Windermere Survey : https://www.fba.org.uk/volunteer/the-big-windermere-survey

Cumbrian Lakes Monitoring Platform: https://uk-scape.ceh.ac.uk/our-science/projects/cumbrian-lakes-monitoring-platform/

Storm overflow and pollution data:  https://www.unitedutilities.com/corporate/responsibility/environment/reducing-pollution/storm-overflows/storm-overflow-performance/

Windermere SAGIS Report – This short report describes the phosphorus source apportionment data for the Windermere catchment that has been produced by the Environment Agency. View Windermere SAGIS Report

Business FAQ – Please refer to our frequently asked questions designed for businesses located in the catchment area affected by the water quality challenges in Windermere.

Dr Ben Surridge of Lancaster University speaking at the Freshwater Biological Association’s ‘thank you’ event for volunteers who support the Big Windermere Survey held at the Windermere Jetty Museum on Saturday 23rd September 2023
Andy Brown

Blog by Andy Brown of the Environment Agency explaining the different sources of nutrients entering Windermere