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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 5m

Hands-on day of science and environmental action!

Collecting river water samples to test for phosphate levels. No experience needed!

📅 Friday 10th October
https://tinyurl.com/NOSESRestoreHope

and

📅 Saturday 18th October

River Chess Water Survey Day - Chorleywood

Free event to have a go at water sampling, contribute to vital citizen science, and learn about the Chess - a beautiful chalk stream!

tinyurl.com

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 1d

SmartRiver Survey

We have now collected samples from the river Chess and the River Hamble. We should receive the results of the survey in the next few weeks and that will tell us more about riverfly species and diversity in these two chalk streams.

Stay tuned!

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 2d

Extended Riverfly Training- One week to go!

Last opportunity to book this free event: for tor those who are already confident in Riverfly monitoring and would like to learn how to identify more species.

https://bit.ly/45cXSN8

Book now!

Extended Riverfly Training Autumn 2025

Already confident in the Riverfly method? Join us to learn more about freshwater invertebrate groups with Steve Brooks, Riverfly Co-chair

bit.ly

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 3d

Hands-on day of science and environmental action!

Collecting river water samples to test for phosphate levels. No experience needed!

📅 Friday 10th October
https://tinyurl.com/NOSESRestoreHope

and

📅 Saturday 18th October

River Chess Water Survey Day - Chorleywood

Free event to have a go at water sampling, contribute to vital citizen science, and learn about the Chess - a beautiful chalk stream!

tinyurl.com

1 1

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 5d

Hands-on day of science and environmental action!

Collecting river water samples to test for phosphate levels. No experience needed!

📅 Friday 10th October
https://tinyurl.com/NOSESRestoreHope

and

📅 Saturday 18th October

River Chess Water Survey Day - Chorleywood

Free event to have a go at water sampling, contribute to vital citizen science, and learn about the Chess - a beautiful chalk stream!

tinyurl.com

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 5d

‼️Chalk stream bird walk- River Misbourne- CANCELLED ‼️

We are very sorry, but we have to cancel this event due to yellow warning for high winds

⚠️⚠️⚠️

We are hoping to run this event in the future.

If you have any questions contact us: [email protected]

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 5d

‼️Chalk stream bird walk- River Misbourne- CANCELLED ‼️

We are very sorry, but we have to cancel this event due to yellow warning for high winds

⚠️⚠️⚠️

We are hoping to run this event in the future.

If you have any questions contact us: [email protected]

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 5d

‼️Chalk stream bird walk- River Misbourne- CANCELLED ‼️

We are very sorry, but we have to cancel this event due to yellow warning for high winds

⚠️⚠️⚠️

We are hoping to run this event in the future.

If you have any questions contact us: [email protected]

1

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 7d

Extended Riverfly on the Chess.

By comparing data before and after restoration, the monitoring helps understand how well the stream is doing. Extended riverfly provides more detailed data by monitoring 33 species.

We are running a free training day on the 14th October: https://bit.ly/45cXSN8

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 9d

Modular River Survey (MoRPh) training day

https://bit.ly/466Ujr1

The day will consist of presentations in the morning to teach the MoRPh method and a practice session along a small section of the river.

Only few spaces available!

MoRPh Training day 2025

Do you want to know more about MoRPh survey or would you like to refresh your skills? Join us in November!

bit.ly

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 10d

World River Day!

Chalk streams are very rare and fragile ecosystems and they are under threat from sewage and chemical pollution, climate change, habitat loss, drought and water scarcity:

Threats

Despite the rarity and value of chalk streams, these precious and unique freshwater ecosystems are at risk. The chalk streams in the Chilterns are widely regarded as amongst the most threatened in the UK.

www.chilternstreams.org

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 12d

Tomorrow!

Don't miss stream dipping, art and craft and guided walk for World Rivers Day with Not Bourne Yesterday

28 September 10:00-16:00

Desborough Recreation Grounds, Fryers Lane, High Wycombe, HP12 3AN

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 12d

River Ver, St Albans, images taken within 100m of each other. Different ways chalk streams support their local mammalian populations: both important symbols of the role these streams play in our modern society, and should be cherished and celebrated!
(Water vole photo: credit Ver Valley Society)

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 13d

We were excited to join the CaSTCo conference yesterday celebrating the launch of their new roadmap for unified catchment monitoring. https://castco.org/roadmap/
Inspiring collaboration with organisations from across the country, all passionate about the power of citizen science to help our rivers!

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 15d

‼️ Check out our Events page with new events and training opportunities! ‼️

Events

What's on in and around our Chilterns Chalk Streams? Find out here.

www.chilternstreams.org

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 16d

Not Bourne Yesterday stream dipping, art and craft and guided walk for World Rivers Day

28 September 10:00-16:00

Desborough Recreation Grounds, Fryers Lane, High Wycombe, HP12 3AN

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 17d

Free Modular River Survey (MoRPh) training day

15 November 10:00

https://bit.ly/466Ujr1

Very limited spaces available, book now to avoid disappointment.

MoRPh Training day 2025

Do you want to know more about MoRPh survey or would you like to refresh your skills? Join us in November!

bit.ly

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 17d

Autumn is here!

Today the sun is perpendicular to the equator, and daytime and night time are of approximately equal duration.

Autumn is often celebrated with festivals, music, dancing, and communal gatherings.

Look around you, do you see nature changing colours already...?

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 18d

‼️Not long until our Redbourn Common Walk ‼️

Friday 17 October 10:30am

Book your place now!

Redbourn Common Walk

Join us for pleasant and interesting circular walk on the outskirt of Redbourn (Herts) that will take us along the River Ver.

bit.ly

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 19d

💚💚 Chesham Green Market 💚💚

We are here today with River Chess Association

Come and visit us! Do you want to know more about the river ecology and what we do? We have some invertebrates from the River Chess to display and talk about.

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 20d

Riverfly monitoring on the Bulbourne

Our September survey was wet and quite cold. We still managed to have fun and count several species!

If you are interested in riverfly monitoring or helping with other projects, don't hesitate to contact us:

[email protected]

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 21d

Redbourn Common Walk 💚💚💚

Book your place on this lovely 7km walk from Redbourn and along the River Ver on
Friday 17 October 10:30am

https://bit.ly/4gcUsy0

👣👣👣

Redbourn Common Walk

Join us for pleasant and interesting circular walk on the outskirt of Redbourn (Herts) that will take us along the River Ver.

bit.ly

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 22d

Not Bourne Yesterday stream dipping, art and craft and guided walk for World Rivers Day

28 September 10:00-16:00

Desborough Recreation Grounds, Fryers Lane, High Wycombe, HP12 3AN

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Chilterns Chalk Streams Project @chilternstreams.bsky.social · 25d

👣 Redbourn Common Walk 👣

Friday 17 October 10:30am

Book your place on this lovely 7km walk from Redbourn and along the River Ver.

Redbourn Common Walk

Join us for pleasant and interesting circular walk on the outskirt of Redbourn (Herts) that will take us along the River Ver.

bit.ly

Chilterns Chalk Streams Project @chilternstreams.bsky.social · 26d

Not Bourne Yesterday stream dipping, art and craft and guided walk for World Rivers Day

28 September 10:00-16:00

Desborough Recreation Grounds, Fryers Lane, High Wycombe, HP12 3AN

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