At the LDAC AGM in February 2018 - Richard Grieve gave an update on Colliford Salmon Hatchery acitivy, including -
- Thanked LDAC for continued support for the
- Noted the good collaboration between
EA/SWW/FRA/WRT in making the hatchery
- Noted the first year of operation with good outputs
- Noted that brood-stock had been collected from
across most of the catchment for 2018
- Provided an interested commentary on some of the
lessons learned from the first year of operation. It
had, for instance, become clear that water
temperature was critical in hatching and normal fry development. To this end an innovative and cost
effective chilling system had been installed which recirculated
chilled water across egg trays, thereby
reducing the volumes required. This concept had
also been transferred to the Lynher hatchery as best
- Recommended the excellent short film (Lost at Sea)
as an interesting learning tool for all salmon anglers.
- Noted the importance of judging the hatchery and its
success on facts, not supposition. In particular he
touched on the motivational impact negative
statements could have on the small pool of
volunteers that kept the hatchery going.
At the LDAC AGM in February 2018 - Arthur White a brief overview of the Lynher Hatchery
- The 2017 output of 30,000 fry
- The cost of the operation being solely dependent
upon donations and acknowledged the contributions
made by LDAC in sustaining the operation
- 65,000 eggs in 2018, stripped from 8 fish
- Hatching had progressed well with just 4%
losses – aided by lower water temperatures.
From the 2017 AGM Minutes -
The new FRA-operated hatchery at Colliford is now up and
running thanks to the generous funding from SWW and the
efforts of all the volunteers who helped set it up and run it.
Initial concerns over water temperature and
quality/quantity have proved unwarranted and the
Hatchery Manager was pleased to report that the first 6
months of activities had proved a success:
- Brood stock collection quotas had been met. LDAC
waters provided two thirds (2/3) of the brood stock
and one angler (J Hake) had collected over 50% of
- Just under 40,000 eggs had been stripped and the
brood stock returned back to the river.
- At the time of the meeting the first 2 fry had hatched
and with low water temperatures (assisted by a
chiller unit) eggs are developing well.
- A CEFAS inspection had been carried out and the
results were more than satisfactory.
- The vision for the hatchery is not just to make it work
– but to make it work well.
- Volunteers were once more thanked for their efforts
in making the operation the success it is to date.
From the 2017 AGM Minutes -
Firstly Arthur White thanked LDAC for the financial contribution it
makes to the running of the hatchery on the Lynher. Unlike
the Colliford hatchery the Lynher hatchery receives no
funding from SWW or other external agencies; the £2000
pa running costs have to be met from contributions from
local anglers and the volunteers themselves.
Operating problems from previous years had been
resolved inasmuch as -
- The EA had granted the Hatchery a license to collect
brood stock in November, after the season had
closed. This means that the brood stock are no
longer held for long periods in warm (autumnal)
waters and their health has improved – allowing for
more successful stripping. Thanks were given to the
EA for their support.
- Later stripping increased the viability of eggs as the
water temperatures were now lower during their
Operation to date -
- Brood stock quotas met
- 52,000 eggs stripped. However one batch was poorly
developed and those eggs (10,000) were then reintroduced
into artificial redds in the river to prevent
their inevitable deterioration in the hatchery.
- Of the remainder approximately 50% of the eggs had
hatched to date.
The stocking plan for the fry this year would involve split
releases – half the stock would be reared on whilst the other
half would be introduced to the river as swim-up fry. This plan
prevented rising water temperature from impacting
survivability during the summer.
This year the hatchery would also be looking to raise funds for
a chiller unit to further improve survivability rates in the future.
After a difficult winter with high water temperatures inhibiting the stripping of several brood hens, some 23000 eggs were eventually obtained.
Hatching extended over a prolonged period, and a number of fry were returned to the river in early March.
The remaining fry, some 13,000, will now all be reared on for autumn stocking, provided summer water temperatures do not prove to high.
The Fowey Rivers Association and South West Water are re-opening the Hatchery under the dam at Colliford - at the head waters of the St Neot.
This is a great opportunity - and with the generosity of South West Water and their ongoing commitment of compensation for Colliford reservoir - we can operate a Hatchery far beyond the scale that we could afford if we funded it ourselves with donations and conservation grants.
When the programme starts in October we will be looking for volunteers to help operate the Hatchery - and we will start feeding more information nearer the time.
If you would like to volunteer - please send your details to email@example.com
Please see this post on the FRA website - Please register if you would like to volunteer at the re-opened Colliford Hatchery later this year.
Currently we have obtained our full brood stock allowance of 16 fish, although as in the last two years cock fish have been very scarce.
Despite high water levels in recent weeks there is little evidence of fish running the river.
The brood fish are generally in good condition, although we have increased the Pyces and salt treatment to maintain their health. No evidence as yet that any fish are reaching the stripping stage, but we rarely reach this position before mid-December at the earliest.
Water temperature is still at 9 - 10 oC which is still rather high for the time of year.. (Arthur White)
We set up a small temporary Hatchery solution in North Cornwall for the 2013/14 programme - but the weather and the quantity and quality of Broodstock fish available defeated us.
The end result does not convey the amount of work involved - and thanks must go to Justin Ruscombe-King of Westcountry Trout for offering his Hatchery - also The Fowey River Association for their support and funding.
An announcement note about the closure can be found here www.riverfowey.org.
Many thanks, we will be back next year. (Richard Grieve)
I am very pleased to be able to give a positive Fowey Hatchery
A permanent home is still not in place but some progress
has been made in the 2 years we have been away.
Let us recap for a moment - South West Water (SWW) pay The
Fowey River Association (FRA) compensation for the lost spawning
at the top of the St Neot tributary caused by the building of
Colliford Reservoir. SWW built a hatchery below the dam and
which subsequently closed.
Efforts to raise salmon for re-stocking
then moved to Wainsford. Wainsford hatchery was very successful
but regrettably had to close in 2011.
SWW are still committed to raise salmon in compensation for lost
spawning - and in conjunction with the FRA they continue to look
for a site to re-establish and thereafter fund our new permanent
home. But these things take time...
While this work goes on we have worked out a temporary solution
for the 2013/14 salmon-rearing season - in conjunction with our
regular hatchery technical advisor Justin Ruscombe-King - we are
going to raise 30-40,000 Salmon in Boscastle at his trout farm.
At the time of writing (December 2013) we have made the 25-mile
journey from the Fowey to North Cornwall with several cock fish
but only a couple of hen fish. This is the bare minimum required
for 'factorial mating' whereby multiple cock fish are used with one
hen's eggs thereby spreading the genes.
We have a great team collecting brood-stock fish throughout the
Fowey catchment - and LDAC waters and anglers are at the
forefront of this work - so thank you to everyone who has donated
time and indeed fish.
We very much hope to have more news very soon. If you would
like to keep up to date we have re-opened the Fowey Hatchery
Blog on the FRA website www.riverfowey.org If you would like
to be involved please drop me a line at firstname.lastname@example.org
Thanks again, regards Richard Grieve