Join the Chilterns, Herts & Middlesex Riverfly Hub on Saturday 14th March 2020 for our annual Riverfly Day event!

The Environment Agency are consulting on their Drought Planning Guideline for Water Companies – open until 18th October 2019 - and we urge you to respond.

Two workshops are taking place in April 2019, to train new volunteers in how to become Riverfly Monitors.

If you are interested in the health of your local river and would you like to learn more about its ecology, this workshop is for you!

A brand new nature trail that takes in some of the best habitat in Welwyn Garden City has today opened at Tewinbury Farm Hotel.

An estimated 1,500 people came together over the weekend to celebrate the wildlife of Hertfordshire and Middlesex. Herts and Middlesex Wildlife Trust, in partnership with The Hertfordshire Natural History Society, hosted the Festival of Wildlife in Tarmac's Panshanger Park.

The Riverfly Partnership is excited to launch its 2016 national photography competition 'Riverflies'* on 30th June 2016.

Sir Oliver Heald MP with Robin Cole volunteer warden

An ongoing supporter of the area, Sir Oliver, MP for North East Hertfordshire, has previously supported a successful campaign to stop water abstraction from the Mimram River.

The second phase of the Sherrardswood project is about to start.

Affinity Water in partnership with the Environment Agency are about to start phase 1 of a river restoration project at Tewin Water.

In his latest blog, Living Rivers Officer David Johnson, takes a look at some of the larger specimens found at the bottom of the river sampling trays.

We have a bird, tree, flowers and even insects, it is now time to find the UK's favourite fish.

The Catchment Based Approach now has its very own twitter feed.

On Friday evening the riverfly monitors from the River Mimram came together for their AMG.

On saturday six new riverfly monitors were trained by the Herts and Chilterns Riverfly Hub on the River Mimram.

The next Riverfly training course is planned for 14th March 2015 at Digswell on the Mimram.  Why not come along?  Although based on the Mimram, the course is open to anyone from the Lea Catchment.

On 8th October 2014, a fish survey was carried out at Singlers Marsh on The Mimram. The survey was conducted by Herts and North London Fisheries Team from the Environment Agency, and yielded some interesting results.

Work to reduce the shading caused by tree coverage at Whitwell has now been completed, as well as the erection of a new fence to help wildlife flourish on this stretch of The Mimram.

Riverfly sampling at recently regravelled sections of the Mimram is showing that invertebrates are already colonising the new habitat!

The recent unprecedented levels of rain have caused a lake to form at Stagenhoe, the source of the Mimram.

Affinity Water's business plan for 2015-2020 has been granted 'enhanced' status by Ofwat, in a move that has delighted campaign groups and landowners throughout the local area.

The eastern half of Panshanger Park, which has been called the 'jewel in the Mimram valley', was opened on 31 March in a statement from Herts County Council, owners Lafarge Tarmac and Herts & Middlesex Wildlife Trust.

Misconnected drains can lead to pollution of local streams, rivers and beaches, damaging wildlife and putting our own health at risk.

Defra is currently consulting on proposals that could fundamentally improve the freshwater environment for decades to come. Showing support for these proposals is crucial if they are to be seen through.

Affinity Water has awarded £2,500 to Herts & Middlesex Wildlife Trust as part of its Community Engagement Programme.  

new gravel riffle

Project number 4 on the Mimram catchment plan, 'Stream bed improvement at Singler's Marsh', has been completed! 

Sixty tonnes of silt has been removed from the river bed and replaced with sixty tonnes of gravel.

Tracked dumped

This will improve the river bed habitat for spawning fish and invertebrates.

Riverfly monitoring

Last week saw a very successful Riverfly training course held on the Mimram at Singler's Marsh. Fifteen new volunteers were trained to carry out invertebrate monitoring on their local river.

EA logo

Their Challenges and Choices document sets out their assessment of the Upper Lea catchment and the issues facing it. They want your views! 

Richard Benyon by the Mimram

He was speaking during the launch of the Government's Catchment Based Approach at Welwyn yesterday, which was hosted by Herts & Middlesex Wildlife Trust and the Environment Agency.

Singlers Marsh

We're delighted to announce that the national rollout of the Catchment Based Approach will be launched from Singler's Marsh, in the Mimram catchment.

The date of the rollout will be confirmed shortly when Herts & Middlesex Wildlife Trust & the Environment Agency will be hosting a visit by Richard Benyon, Natural Environment & Fisheries Minister.

Tree work at Singlers Marsh

Another project on the Catchment Plan is now green!

Contractors started work this morning on Mimram project 19, 'Windows of Vision' at Singlers Marsh, Welwyn. 

AG Treecare Ltd have started clearing overshading scrub from alongside the B656 Codicote Road, to allow more light to reach the river.  They will also pollard some of the very large trees on the marsh side of the river.

Polluted water

Report any such leaks using the Environment Agency's pollution hotline 0800 80 70 60.

Design by LTD Design Consultants and build by Garganey Consulting.