The Riverfly Partnership
@riverflies.bsky.social
Working to protect UK river water quality, further the understanding of riverfly populations & conserve riverfly species & habitats.
riverflies.org
Hosted by @freshwaterbio.bsky.social
riverflies.org
Hosted by @freshwaterbio.bsky.social
Thanks to everyone who stopped by the Riverfly stand at the British Fly Fair International last weekend! Simon (Riverfly Co-chair) and Arron (EA Ecology Contact) did a great job representing the Partnership.
February 12, 2026 at 9:44 AM
Thanks to everyone who stopped by the Riverfly stand at the British Fly Fair International last weekend! Simon (Riverfly Co-chair) and Arron (EA Ecology Contact) did a great job representing the Partnership.
🧪 Citizen science in action!
Peter Hanks from the West Cornwall ARMI Hub has built his own sorting table to make Riverfly monitoring easier in the field.
Got your own kit hacks or survey tips? Drop them in the comments or send us a photo!
📸 Peter Hanks
#Riverfly #CitizenScience #FieldHacks
Peter Hanks from the West Cornwall ARMI Hub has built his own sorting table to make Riverfly monitoring easier in the field.
Got your own kit hacks or survey tips? Drop them in the comments or send us a photo!
📸 Peter Hanks
#Riverfly #CitizenScience #FieldHacks
February 6, 2026 at 12:08 PM
🧪 Citizen science in action!
Peter Hanks from the West Cornwall ARMI Hub has built his own sorting table to make Riverfly monitoring easier in the field.
Got your own kit hacks or survey tips? Drop them in the comments or send us a photo!
📸 Peter Hanks
#Riverfly #CitizenScience #FieldHacks
Peter Hanks from the West Cornwall ARMI Hub has built his own sorting table to make Riverfly monitoring easier in the field.
Got your own kit hacks or survey tips? Drop them in the comments or send us a photo!
📸 Peter Hanks
#Riverfly #CitizenScience #FieldHacks
Our December Data Roundup is here!
👏 Riverfly volunteers submitted 384 surveys across the UK! 🎉
#Riverfly #CitizenScience #Volunteers
👏 Riverfly volunteers submitted 384 surveys across the UK! 🎉
#Riverfly #CitizenScience #Volunteers
January 23, 2026 at 12:02 PM
Our December Data Roundup is here!
👏 Riverfly volunteers submitted 384 surveys across the UK! 🎉
#Riverfly #CitizenScience #Volunteers
👏 Riverfly volunteers submitted 384 surveys across the UK! 🎉
#Riverfly #CitizenScience #Volunteers
Meet Arron Watson, national Ecology Contact coordinator.
Arron has been the national EC coordinator since 2019, bringing together all EA regions. He supports volunteers with training days, runs Extended upskill sessions, and delves into the data.
#Riverfly #MeetYourEcologyContact #EnvironmentAgency
Arron has been the national EC coordinator since 2019, bringing together all EA regions. He supports volunteers with training days, runs Extended upskill sessions, and delves into the data.
#Riverfly #MeetYourEcologyContact #EnvironmentAgency
January 20, 2026 at 12:03 PM
Meet Arron Watson, national Ecology Contact coordinator.
Arron has been the national EC coordinator since 2019, bringing together all EA regions. He supports volunteers with training days, runs Extended upskill sessions, and delves into the data.
#Riverfly #MeetYourEcologyContact #EnvironmentAgency
Arron has been the national EC coordinator since 2019, bringing together all EA regions. He supports volunteers with training days, runs Extended upskill sessions, and delves into the data.
#Riverfly #MeetYourEcologyContact #EnvironmentAgency
🪰 #Freshwater Friday - A rare glimpse of a mayfly (Heptageniidae) moulting!
This stop-frame sequence shows a Heptageniidae shedding its exoskeleton - captured by our brilliant Riverfly volunteer Hilary. Just one of the many hidden stories happening beneath the water's surface.
#CitizenScience
This stop-frame sequence shows a Heptageniidae shedding its exoskeleton - captured by our brilliant Riverfly volunteer Hilary. Just one of the many hidden stories happening beneath the water's surface.
#CitizenScience
January 16, 2026 at 12:02 PM
🪰 #Freshwater Friday - A rare glimpse of a mayfly (Heptageniidae) moulting!
This stop-frame sequence shows a Heptageniidae shedding its exoskeleton - captured by our brilliant Riverfly volunteer Hilary. Just one of the many hidden stories happening beneath the water's surface.
#CitizenScience
This stop-frame sequence shows a Heptageniidae shedding its exoskeleton - captured by our brilliant Riverfly volunteer Hilary. Just one of the many hidden stories happening beneath the water's surface.
#CitizenScience
Interested in becoming the new Senior Development Manager for the Riverfly Partnership?
📄 The job application deadline is Sunday 18th January - apply now! 💻
https://www.fba.org.uk/riverfly-partnership-senior-development-manager
📄 The job application deadline is Sunday 18th January - apply now! 💻
https://www.fba.org.uk/riverfly-partnership-senior-development-manager
January 13, 2026 at 12:02 PM
Interested in becoming the new Senior Development Manager for the Riverfly Partnership?
📄 The job application deadline is Sunday 18th January - apply now! 💻
https://www.fba.org.uk/riverfly-partnership-senior-development-manager
📄 The job application deadline is Sunday 18th January - apply now! 💻
https://www.fba.org.uk/riverfly-partnership-senior-development-manager
📢 Reminder for Riverfly monitors
Make sure all your 2025 Riverfly surveys are uploaded and approved on Cartographer.
📊 Data will be downloaded on 15th January and only approved data will be included in the 2025 annual report.
Every record counts 💧
Make sure all your 2025 Riverfly surveys are uploaded and approved on Cartographer.
📊 Data will be downloaded on 15th January and only approved data will be included in the 2025 annual report.
Every record counts 💧
January 6, 2026 at 12:02 PM
📢 Reminder for Riverfly monitors
Make sure all your 2025 Riverfly surveys are uploaded and approved on Cartographer.
📊 Data will be downloaded on 15th January and only approved data will be included in the 2025 annual report.
Every record counts 💧
Make sure all your 2025 Riverfly surveys are uploaded and approved on Cartographer.
📊 Data will be downloaded on 15th January and only approved data will be included in the 2025 annual report.
Every record counts 💧
✨Riverfly Partnership Calendar 2026 - Now 50% OFF!✨
Our Riverfly Calendar is packed with stunning freshwater invertebrate images from our photography competition.
Grab yours now!
👉https://www.fba.org.uk/shop/p/riverfly-partnership-2026-calendar
Our Riverfly Calendar is packed with stunning freshwater invertebrate images from our photography competition.
Grab yours now!
👉https://www.fba.org.uk/shop/p/riverfly-partnership-2026-calendar
January 2, 2026 at 12:01 PM
✨Riverfly Partnership Calendar 2026 - Now 50% OFF!✨
Our Riverfly Calendar is packed with stunning freshwater invertebrate images from our photography competition.
Grab yours now!
👉https://www.fba.org.uk/shop/p/riverfly-partnership-2026-calendar
Our Riverfly Calendar is packed with stunning freshwater invertebrate images from our photography competition.
Grab yours now!
👉https://www.fba.org.uk/shop/p/riverfly-partnership-2026-calendar
🎄Merry Christmas from Riverfly HQ!🎅
✨A huge thank you to all our amazing volunteers, partners, funders and supporters for everything you've done throughout 2025.
💧We hope you have a delightful festive break! We'll see you back out on the river in 2026.
🎁Merry Christmas and Happy New Year!
✨A huge thank you to all our amazing volunteers, partners, funders and supporters for everything you've done throughout 2025.
💧We hope you have a delightful festive break! We'll see you back out on the river in 2026.
🎁Merry Christmas and Happy New Year!
December 23, 2025 at 12:02 PM
🎄Merry Christmas from Riverfly HQ!🎅
✨A huge thank you to all our amazing volunteers, partners, funders and supporters for everything you've done throughout 2025.
💧We hope you have a delightful festive break! We'll see you back out on the river in 2026.
🎁Merry Christmas and Happy New Year!
✨A huge thank you to all our amazing volunteers, partners, funders and supporters for everything you've done throughout 2025.
💧We hope you have a delightful festive break! We'll see you back out on the river in 2026.
🎁Merry Christmas and Happy New Year!
Our November Data Roundup is here!
👏 Riverfly volunteers submitted a huge 526 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and @esmeefairbairn.bsky.social
👉 https://www.riverflies.org/riverflyreports
👏 Riverfly volunteers submitted a huge 526 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and @esmeefairbairn.bsky.social
👉 https://www.riverflies.org/riverflyreports
December 22, 2025 at 12:02 PM
Our November Data Roundup is here!
👏 Riverfly volunteers submitted a huge 526 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and @esmeefairbairn.bsky.social
👉 https://www.riverflies.org/riverflyreports
👏 Riverfly volunteers submitted a huge 526 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and @esmeefairbairn.bsky.social
👉 https://www.riverflies.org/riverflyreports
🚨Before you head out to sample your river - check it's safe!🚨
✅ Complete a Dynamic Risk Assessment
✅ Check river conditions
✅ Sample with a friend
Read more in our RMI Theory Guide
👉 www.riverflies.org/keydocuments/#rmitraining
#CitizenScience #StaySafeOutdoors #WinterSampling
✅ Complete a Dynamic Risk Assessment
✅ Check river conditions
✅ Sample with a friend
Read more in our RMI Theory Guide
👉 www.riverflies.org/keydocuments/#rmitraining
#CitizenScience #StaySafeOutdoors #WinterSampling
December 19, 2025 at 12:02 PM
🚨Before you head out to sample your river - check it's safe!🚨
✅ Complete a Dynamic Risk Assessment
✅ Check river conditions
✅ Sample with a friend
Read more in our RMI Theory Guide
👉 www.riverflies.org/keydocuments/#rmitraining
#CitizenScience #StaySafeOutdoors #WinterSampling
✅ Complete a Dynamic Risk Assessment
✅ Check river conditions
✅ Sample with a friend
Read more in our RMI Theory Guide
👉 www.riverflies.org/keydocuments/#rmitraining
#CitizenScience #StaySafeOutdoors #WinterSampling
📣We're recruiting!
The Riverfly Partnership is, hosted by the @freshwaterbio.bsky.social seeking a Senior Development Manager to grow sustainable funding for one of Europe's longest-running citizen science programmes.
Passionate about rivers and community science?
👉 www.fba.org.uk/riverfly-par...
The Riverfly Partnership is, hosted by the @freshwaterbio.bsky.social seeking a Senior Development Manager to grow sustainable funding for one of Europe's longest-running citizen science programmes.
Passionate about rivers and community science?
👉 www.fba.org.uk/riverfly-par...
December 17, 2025 at 10:37 AM
📣We're recruiting!
The Riverfly Partnership is, hosted by the @freshwaterbio.bsky.social seeking a Senior Development Manager to grow sustainable funding for one of Europe's longest-running citizen science programmes.
Passionate about rivers and community science?
👉 www.fba.org.uk/riverfly-par...
The Riverfly Partnership is, hosted by the @freshwaterbio.bsky.social seeking a Senior Development Manager to grow sustainable funding for one of Europe's longest-running citizen science programmes.
Passionate about rivers and community science?
👉 www.fba.org.uk/riverfly-par...
🎄Thank you to everyone who took part in our Riverfly Christmas Quiz last week!
We loved seeing so many of you test your freshwater knowledge. Now it's time to reveal the answers and this year's winner...👀✨
#RiverflyMonitoring #CitizenScience #ChristmasQuiz #Giveaway
We loved seeing so many of you test your freshwater knowledge. Now it's time to reveal the answers and this year's winner...👀✨
#RiverflyMonitoring #CitizenScience #ChristmasQuiz #Giveaway
December 16, 2025 at 12:03 PM
🎄Thank you to everyone who took part in our Riverfly Christmas Quiz last week!
We loved seeing so many of you test your freshwater knowledge. Now it's time to reveal the answers and this year's winner...👀✨
#RiverflyMonitoring #CitizenScience #ChristmasQuiz #Giveaway
We loved seeing so many of you test your freshwater knowledge. Now it's time to reveal the answers and this year's winner...👀✨
#RiverflyMonitoring #CitizenScience #ChristmasQuiz #Giveaway
☃️ Day 5 - Christmas Quiz Giveaway🎄
✨Today's Question: Which family of up-wing flies is known for its flattened body shape that helps it cling to rocks in fast-flowing rivers? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
✨Today's Question: Which family of up-wing flies is known for its flattened body shape that helps it cling to rocks in fast-flowing rivers? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
December 12, 2025 at 12:02 PM
☃️ Day 5 - Christmas Quiz Giveaway🎄
✨Today's Question: Which family of up-wing flies is known for its flattened body shape that helps it cling to rocks in fast-flowing rivers? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
✨Today's Question: Which family of up-wing flies is known for its flattened body shape that helps it cling to rocks in fast-flowing rivers? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
☃️ Day 4 - Christmas Quiz Giveaway🎄
✨Today's Question: Stoneflies belong to which order of insects? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
✨Today's Question: Stoneflies belong to which order of insects? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
December 11, 2025 at 12:03 PM
☃️ Day 4 - Christmas Quiz Giveaway🎄
✨Today's Question: Stoneflies belong to which order of insects? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
✨Today's Question: Stoneflies belong to which order of insects? ✨
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
☃️ Day 3 - Christmas Quiz Giveaway🎄
✨Today's Question: What is the missing word? As larvae, riverflies undergo several ............., which is when they shed their outer layer in order to grow larger.✨
Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
✨Today's Question: What is the missing word? As larvae, riverflies undergo several ............., which is when they shed their outer layer in order to grow larger.✨
Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
December 10, 2025 at 12:02 PM
☃️ Day 3 - Christmas Quiz Giveaway🎄
✨Today's Question: What is the missing word? As larvae, riverflies undergo several ............., which is when they shed their outer layer in order to grow larger.✨
Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
✨Today's Question: What is the missing word? As larvae, riverflies undergo several ............., which is when they shed their outer layer in order to grow larger.✨
Test your knowledge for a chance to win our Riverfly Calendar 2026! 🎁
Day 2 - Christmas Quiz Giveaway🎄
✨Today's Question: Complete the name of this stonefly species, named after the colour of its markings, once thought to be extinct in the UK until it was discovered on the River Dee in Wales in 2017: 'Scarce ................. sally'
Win our Riverfly Calendar 2026! 🎁
✨Today's Question: Complete the name of this stonefly species, named after the colour of its markings, once thought to be extinct in the UK until it was discovered on the River Dee in Wales in 2017: 'Scarce ................. sally'
Win our Riverfly Calendar 2026! 🎁
December 9, 2025 at 12:03 PM
Day 2 - Christmas Quiz Giveaway🎄
✨Today's Question: Complete the name of this stonefly species, named after the colour of its markings, once thought to be extinct in the UK until it was discovered on the River Dee in Wales in 2017: 'Scarce ................. sally'
Win our Riverfly Calendar 2026! 🎁
✨Today's Question: Complete the name of this stonefly species, named after the colour of its markings, once thought to be extinct in the UK until it was discovered on the River Dee in Wales in 2017: 'Scarce ................. sally'
Win our Riverfly Calendar 2026! 🎁
Day 1 - Christmas Quiz Giveaway🎄
✨Today's Question: Which river is the tenth longest river in the UK, flowing through Northamptonshire, Cambridgeshire and Lincolnshire before reaching The Wash?
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026🎁
✨Today's Question: Which river is the tenth longest river in the UK, flowing through Northamptonshire, Cambridgeshire and Lincolnshire before reaching The Wash?
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026🎁
December 8, 2025 at 12:02 PM
Day 1 - Christmas Quiz Giveaway🎄
✨Today's Question: Which river is the tenth longest river in the UK, flowing through Northamptonshire, Cambridgeshire and Lincolnshire before reaching The Wash?
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026🎁
✨Today's Question: Which river is the tenth longest river in the UK, flowing through Northamptonshire, Cambridgeshire and Lincolnshire before reaching The Wash?
Think you know your Riverfly trivia? Test your knowledge for a chance to win our Riverfly Calendar 2026🎁
New Riverfly sampling spot! 🏡
We've moved HQ, which means one very exciting thing... a brand new Riverfly sampling location for team Riverfly! 🙌
We can't wait to see what invertebrates turn up and how this new site compares over time. 🐛✨
#FreshwaterMonitoring #CitizenScience #FreshwaterFriday
We've moved HQ, which means one very exciting thing... a brand new Riverfly sampling location for team Riverfly! 🙌
We can't wait to see what invertebrates turn up and how this new site compares over time. 🐛✨
#FreshwaterMonitoring #CitizenScience #FreshwaterFriday
December 5, 2025 at 12:02 PM
New Riverfly sampling spot! 🏡
We've moved HQ, which means one very exciting thing... a brand new Riverfly sampling location for team Riverfly! 🙌
We can't wait to see what invertebrates turn up and how this new site compares over time. 🐛✨
#FreshwaterMonitoring #CitizenScience #FreshwaterFriday
We've moved HQ, which means one very exciting thing... a brand new Riverfly sampling location for team Riverfly! 🙌
We can't wait to see what invertebrates turn up and how this new site compares over time. 🐛✨
#FreshwaterMonitoring #CitizenScience #FreshwaterFriday
🎄 The perfect stocking filler for freshwater fans!
Our 2026 Riverfly Calendar has found its new home inside our Crafty Critters Shopper bag... and it fits perfectly!
This duo makes the ideal Christmas gift.✨🎁
Both available on our website shop - grab yours now!
https://www.riverflies.org/
Our 2026 Riverfly Calendar has found its new home inside our Crafty Critters Shopper bag... and it fits perfectly!
This duo makes the ideal Christmas gift.✨🎁
Both available on our website shop - grab yours now!
https://www.riverflies.org/
December 2, 2025 at 12:03 PM
🎄 The perfect stocking filler for freshwater fans!
Our 2026 Riverfly Calendar has found its new home inside our Crafty Critters Shopper bag... and it fits perfectly!
This duo makes the ideal Christmas gift.✨🎁
Both available on our website shop - grab yours now!
https://www.riverflies.org/
Our 2026 Riverfly Calendar has found its new home inside our Crafty Critters Shopper bag... and it fits perfectly!
This duo makes the ideal Christmas gift.✨🎁
Both available on our website shop - grab yours now!
https://www.riverflies.org/
Our October Data Roundup is here!
👏 Riverfly volunteers submitted a huge 809 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and Esmee Fairbairn Foundation.
👉 https://www.riverflies.org/riverflyreports
👏 Riverfly volunteers submitted a huge 809 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and Esmee Fairbairn Foundation.
👉 https://www.riverflies.org/riverflyreports
November 28, 2025 at 12:02 PM
Our October Data Roundup is here!
👏 Riverfly volunteers submitted a huge 809 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and Esmee Fairbairn Foundation.
👉 https://www.riverflies.org/riverflyreports
👏 Riverfly volunteers submitted a huge 809 surveys across the UK! 🎉
This work is supported by our amazing funders at the Environment Agency and Esmee Fairbairn Foundation.
👉 https://www.riverflies.org/riverflyreports
Thank you to everyone who joined us at the Riverfly Conference 2025!
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
November 25, 2025 at 12:36 PM
Thank you to everyone who joined us at the Riverfly Conference 2025!
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
We’re proud to have been part of the CaSTCo (Catchment Systems Thinking Cooperative) project, helping advance collaborative river monitoring across England and Wales. Together, we’ve proven that community data can drive real decisions for river recovery, and this is just the start!
November 12, 2025 at 11:49 AM
We’re proud to have been part of the CaSTCo (Catchment Systems Thinking Cooperative) project, helping advance collaborative river monitoring across England and Wales. Together, we’ve proven that community data can drive real decisions for river recovery, and this is just the start!
💧Crayfish Guidance!
In England's rivers we have both native and invasive non-native species of crayfish.
👀 They are pretty hard to tell apart. Learn what to do and not to do if you come accidentally come across one in your Riverfly sample.
👉231027+Riverfly+Guidance+VB.pdf
In England's rivers we have both native and invasive non-native species of crayfish.
👀 They are pretty hard to tell apart. Learn what to do and not to do if you come accidentally come across one in your Riverfly sample.
👉231027+Riverfly+Guidance+VB.pdf
November 10, 2025 at 12:02 PM
💧Crayfish Guidance!
In England's rivers we have both native and invasive non-native species of crayfish.
👀 They are pretty hard to tell apart. Learn what to do and not to do if you come accidentally come across one in your Riverfly sample.
👉231027+Riverfly+Guidance+VB.pdf
In England's rivers we have both native and invasive non-native species of crayfish.
👀 They are pretty hard to tell apart. Learn what to do and not to do if you come accidentally come across one in your Riverfly sample.
👉231027+Riverfly+Guidance+VB.pdf
🪰 Freshwater Friday - Flat-bodied stone-clingers (Heptageniidae)
Larvae in this family of mayflies have a flattened shape, which is perfect for clinging to rocks in fast-flowing streams.
If you spot them, it’s a good sign of a healthy river.
#FreshwaterFriday #Riverfly #Heptageniidae
Larvae in this family of mayflies have a flattened shape, which is perfect for clinging to rocks in fast-flowing streams.
If you spot them, it’s a good sign of a healthy river.
#FreshwaterFriday #Riverfly #Heptageniidae
November 7, 2025 at 12:04 PM
🪰 Freshwater Friday - Flat-bodied stone-clingers (Heptageniidae)
Larvae in this family of mayflies have a flattened shape, which is perfect for clinging to rocks in fast-flowing streams.
If you spot them, it’s a good sign of a healthy river.
#FreshwaterFriday #Riverfly #Heptageniidae
Larvae in this family of mayflies have a flattened shape, which is perfect for clinging to rocks in fast-flowing streams.
If you spot them, it’s a good sign of a healthy river.
#FreshwaterFriday #Riverfly #Heptageniidae