ColneCAN
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colnecan.bsky.social
ColneCAN
@colnecan.bsky.social
The Colne Catchment Action Network brings people together to explore better ways to protect, conserve and enhance the water environment of the Colne catchment.
https://colnecan.org.uk
It was great to join over 100 people at the Colne Catchment Action Network (ColneCAN) conference on 21st October in #Rickmansworth to discuss what we CAN do to restore this chalk river system that covers 1000km2 across parts of 6 counties. Read a full report here:
www.colnecan.org.uk/index.php/al...
November 8, 2025 at 5:22 PM
Aquatic plastic #recycling charity ReAP have a hub in Tolpits Lane #Watford. If you’re organising a litter pick locally near a pond, river, canal or lake get in touch & they’ll #recycle what you pick. Doubly good for the #enviroment! @watfordcouncil.bsky.social
www.colnecan.org.uk/index.php/th...
October 31, 2025 at 12:16 PM
the ColneCAN Conference tomorrow Tuesday 21st October at
@WatersmeetVenue #Rickmansworth is fully booked.
We’re excited for a day of talks, much networking & afternoon walks. A great day of Catchment Partnership working is promised.
@AffinityWater @thameswater @ThreeRiversDC
October 20, 2025 at 10:57 AM
Do you want to know how much rain fell in the #Herts and North #London Area during September or how high the river flows were?
@EnvAgency
www.gov.uk/government/p...
October 17, 2025 at 4:00 PM
Campaign to plant 100 Black poplar trees in #Herts:
This scheme is being implemented by Nicholas Buxton, the High Sheriff of Hertfordshire in collaboration with @HMWTBadger. Learn more about how you can get involved here
www.colnecan.org.uk/index.php/th...
October 17, 2025 at 1:52 PM
Rivers need room to recover!
The Wildlife Trusts are calling on @ukgovernment.bsky.social to:
Fund a nationwide nature-rich river corridor
Support farmers: make space for water with accessible funding

www.colnecan.org.uk/index.php/al...
October 17, 2025 at 1:48 PM
Excellent to catch up with partners at the recent CaSTCo event.
@thameswater.bsky.social
@thames21.bsky.social
@UrbanRiverS_
October 9, 2025 at 1:19 PM
Our catchment coordinator Lucy Shuker @gwksouth.bsky.social was delighted to be at the recent CaSTCo event. Great to celebrate the value of our amazing citizen scientists & the data they gather.
October 9, 2025 at 1:04 PM
Campaign to plant 100 Black poplar trees in #Herts:
This scheme is being implemented by Nicholas Buxton, the High Sheriff of Hertfordshire in collaboration with @HMWTBadger. Learn more about how you can get involved here
www.colnecan.org.uk/index.php/th...
October 7, 2025 at 2:31 PM
Our catchment coordinator Lucy Shuker @gwksouth.bsky.social was delighted to be at the CaSTCo event last week for the launch of the Road Map for rolling out benefits & next steps following citizen science pilots #castco2025.
October 1, 2025 at 3:53 PM
Nicky from @gwksouth.bsky.social spent a Saturday morning at Willowbank in #NewDenham with Malcolm and his #volunteer friends recently and was impressed by their #Riverfly monitoring skills and set up, thank you Roger @goldcrest10.bsky.social for the photos. @riverflies.bsky.social
September 29, 2025 at 2:48 PM
The @theriverstrust.bsky.social Big River Watch is back now for its Autumn campaign 19-25th September.
Here’s Lucy our catchment manager using the app to assess the River Misbourne beside the Visitor Centre in #Denham.
theriverstrust.org/take-action/...
September 24, 2025 at 3:15 PM
Great to see this Himalayan balsam pulled from the River Colne near #LondonColney
Cllr Matt Fisher donned his waders and got stuck in clearing this insidious non-native invasive species with the help of these hard working #volunteers
@LondonColneyPaC #StAlbans @invasiveSP
September 19, 2025 at 11:40 AM
This sampling was at London Colney Village but similar have been undertaken across the catchment.
www.cranfield.ac.uk/research-pro...
September 16, 2025 at 9:40 AM
Project funded by the Water Restoration fund and being delivered through @cranfielduni.bsky.social with Dr Robert Grabowski as the lead. Many thanks to Cllr Matt Fisher, London Colney Parish Council for his support of our water quality initiatives and these pictures @BankfullScience
September 16, 2025 at 9:38 AM
Biofilm analysis sampling session in London Colney Village #StAlbans working with @cranfielduni.bsky.social part of ongoing work with the ColneCAN water quality working group.
Erin Doyle & Mithil Mahale Cranfield, Tony Booker & Cllr Matt Fisher.
@BankfullScience
www.cranfield.ac.uk/press/news-2...
September 16, 2025 at 9:32 AM
Cranfield University is working with the River Colne Catchment Action Network (ColneCan) on a UK Government-funded project to develop a novel way to diagnose the causes of poor ecological health in rivers. @cranfielduni.bsky.social @BankfullScience
www.cranfield.ac.uk/press/news-2...
September 16, 2025 at 9:29 AM
Who’d like a map that shows the boundaries of the Colne catchment, Colne Valley Regional Park and those of the Chilterns National Landscape?
You’re welcome 😊
@colnevalley.bsky.social @chilternstreams.bsky.social @chilternsnl.bsky.social @vervalleysoc.bsky.social
September 15, 2025 at 8:10 AM
The @envagency.bsky.social routinely measure and monitor the environment to assess the water situation across the #Hertfordshire and North #London Area. See their July 25 Report here
www.gov.uk/government/p...
Pic shows River Ash, downstream of Much Hadham
August 28, 2025 at 9:37 AM
A great recce yesterday on River Colne / GUC / wet woodland site at Troy Lake with Matthew Mountain
@gwksouth.bsky.social and @wildtrouttrust.bsky.social
scoping out bank stabilisation works...
#WestHyde #Harefield
@hertscc.bsky.social
August 27, 2025 at 2:21 PM
Another load of plastic, collected by the @colnevalley.bsky.social green team, being loaded up by Tony Booker ready to go to the amazing ReAP.
ReAP #recycle plastics collected from aquatic ecosystems such as rivers; to reduce the amount of plastic waste, for a cleaner and healthier world.
August 11, 2025 at 1:50 PM
Cranfield University is working with the River Colne Catchment Action Network (ColneCan) on a UK Government-funded project to develop a novel way to diagnose the causes of poor ecological health in rivers. @cranfielduni.bsky.social @BankfullScience
www.cranfield.ac.uk/press/news-2...
July 31, 2025 at 8:02 AM
One of the most under-reported effects of #HeathrowExpansion is its concreting over of 4 rivers into 2km-long tunnels under the runway and the diversion of a fifth through a landfill site.
www.colnevalleypark.org.uk/heathrow-pos...
July 30, 2025 at 10:39 AM
The draft #Hertfordshire Local Nature Recovery Strategy has been published and is open for public consultation. Please read and respond with your feedback before Monday 8th September
hertfordshire.gov.uk/about-the-co...
@hertscc.bsky.social
@hertswildlifetrust.bsky.social
July 28, 2025 at 7:55 AM
Do you want to know how much rain fell in the #Herts and North #London Area during June or how high the river flows were? Pic shows River Ash (Herts) at Much Hadham @envagency.bsky.social
www.gov.uk/government/p...
July 23, 2025 at 8:31 AM