Rivermouth Trust — Impact
Visual concept preview of the Nonprofit Cause template's Impact page: Reports the monitoring honestly — what nine years of counts prove, what they cannot, and who checks them. The sections below are a non-interactive composition of open-registry blocks.
Everything on this page comes from our own monitoring on the Corrow: thirty-one points, read every month, published whole — including the two years our figures were corrected downward.
Habitat work shows up in the counts within about three years. Water chemistry takes longer. Fish recovery is the slowest thing we measure and the easiest to claim dishonestly, so we report it as a range and name the things we cannot rule out.
Shaded reaches held two and a half degrees cooler than open reaches through the last three Augusts.
Turbidity after heavy rain has roughly halved on the fenced sections at Blackbank and Sedge Mill.
Redd counts are up on two reaches and flat on a third — and we cannot yet separate our work from two mild winters.
- 11,400 native trees in the ground since 2016
- 6.2 km of riverbank fenced against stock
- 2.5°C cooler in shaded reaches last August
- 31 monitoring points read every month
Our monitoring is done by trained volunteers to a written protocol, then spot-checked each spring by the Northwind Catchment Partnership — the landowners, angling clubs and commoners who share this river with us.
We publish the protocol, the raw readings, and the springs where the two sets of numbers disagreed.
- years of unbroken monthly readings
- 9
- trained volunteer surveyors
- 148
- years our figures were corrected downward
- 2
- of readings published raw
- 100%
We came in expecting the usual optimism. What we found was a spreadsheet with the bad springs left in it, and a protocol we could follow ourselves.
Sedge Mill Farm gave up about an acre of grazing to the buffer strip we asked for in 2019. It took two winters of talking, a new water supply for the cattle, and a plan the family wrote half of themselves.
I was against it and I said so loudly. Then the beck stopped running brown and my heifers stopped standing in it. I would put that fence up again tomorrow.
Wynn Tregarth, Sedge Mill Farm
Volunteers, anglers, farmers and people who simply walk the river path — collected at the last two open days at the Gauge House.
Eleven years of Saturdays. The bank behind our house is still there because of them.
They asked before they planned, which is not how this usually goes with a farm.
We had not seen a sea trout above the ford since I was a boy. Two last September, both photographed.
The peat work upstream matters as much as the pretty bits, and they treat it that way.
I read the same three points every month. It is dull, and the whole record rests on it.
Our Year Fives have planted two hundred trees they can walk down and visit.
You can hear the shallows again at Blackbank. That is the thing I notice.
They were straight with me about what the notch would cost me and what it would not.
Came for a school project. Stayed four years, and now I run the stakes trailer.
One notch in one barrier opens eleven miles of gravel to sea trout. It is the single biggest change left on the Corrow, and it is what we are raising for now.