The picture was taken during the dry and low water summer of 2018.
This year we'll try to publish a few vital statistics for the fishery through the season.
An easy one is the water level. Both Harlaw and Threipmuir have depth gauges. In the picture you can see the depth markings. 0 on the gauge marks the reservoir being full, the 1 above that would be the reservoir in overflow. Each number below the 0 is, I think, the number of feet down from full. So 8 is 8 feet down and 9 indicates even less water in the reservoir. We limit fishing on the Harlaw dam wall when the scale is about 5 as if it gets any higher (lower number) then back casts extend across the busy footpath. As the level drops it gets hard to read the scale, but in the picture its somewhere like 24 or 25 feet down. However, the reservoir bottoms out at over 60 feet deep.
Just to add to the confusion, Threipmuir is actually full and over flowing when the depth gauge is on 2 (2 feet down).
You can see the latest depth readings on the right of the page (or down below on a mobile). Live readings for water level can also be seen on the Harlaw Hydro website.
Turbidity, or on not Turbidity
We hope to be able to add a few more important measures as the season goes on. Turbidity, or water clarity is important to fly fishers. Water temperature should be easy to measure and maybe the approximate numbers of fish being caught. Keep an eye on the website for the latest information.