The refuges protect growing fish from predators and will help the fish stocks in the area to increase.
It is the first time equipment like this has been used in the north of England.
The Environment Agency is revisiting a Cumbrian lake where hedgehog shaped refuges were installed last year to help protect fish stocks.
Bassenthwaite is the first English lake to use the spiky constructions which provide shelter and a safe haven from predators.
A remote control boat will help monitor how well they are working.
The Environment Agency say it may prosecute following a pollution incident in a beck in Wigton which has killed hundreds of fish.
Investigations are continuing into the source of the chemical leak, but they are focusing on the town's swimming pool, which has been closed while the inquiry continues.
Watch the full report from Hannah McNulty below.
The Environment Agency is educating young people on the causes of water pollution through a video that it hopes will go viral.
Crystal the Crab is the latest character to feature in a video outlining what can cause pollution in the sea.
Children at a Cumbrian school are learning about the causes of water pollution using an environment agency video.
Crystal the Crab will explain to youngsters at Allonby Primary School how things - like dog fouling and washing machines or toilets that are not properly plumbed - can pollute sea water.
Chemical spills which can harm wildlife and the environment should be contained more easily in future, following an agreement by Cumbria Fire Service and the Environment Agency.
They have teamed up to create an Environmental Protection Unit with specialist equipment based at Penrith.
Tim Backshall reports:
The Environment Agency has issued a flood alert for the Rivers Caldew and Petteril.
Heavy and persistent rain is expected to spread in from the west, lasting until Sunday. The rain and widespread snowmelt means there is a possibility of flooding.
All of Cumbria will be affected, mainly on higher grounds. Flooding is possible for the rivers from the Lakeland fells to where they meet the Eden in Carlisle, including Greystoke, Newton Reigny, Plumpton, Stockdalewath, Sebergham and Denton Holme in Carlisle.
The company that runs the Sellafield nuclear site, Sellafield Limited, is to be prosecuted over a 'waste disposal incident.'
It's after allegations the company sent and disposed of four bags of low level radioactive waste from it's west Cumbrian site in 2010.
The company faces nine charges; eight charges have been brought by the Environment Agency and one charge brought by the Office for Nuclear Regulation.
The Environment Agency charges are brought under the Radioactive Substances Act and Environmental Permitting Regulation.
The Office for Nuclear Regulation charge is brought under the Health and Safety at Work Act 1974 and the Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009.
The Environment Agency has released a list of places in Cumbria which are flash flooding hotspots.Read the full story ›
The Environment Agency are warning that thousands of people in the North West are at risk from flash flooding, and is urging communities to prepare in advance.
Flash flooding is caused by intense rainfall. It occurs suddenly with little or no warning – often before the emergency services have time to arrive. It tends to happen when heavy rainfall runs off land and quickly swells rivers and streams, or where drainage systems are overwhelmed by rainfall.
To try and help people understand the risks, the Environment Agency has undertaken detailed studies to identify the communities most at risk from this type of flooding.
They will contact local householders and business owners to explain the risks, and how to prepare themselves to stay safe.