Is it difficult to install a Riverwatcher on an existing fishway?
How many Riverwatchers have been installed in rivers around the world?
Can you install in weirs or traps?
You showed a custom double height system, can it be taller?
What are the standard dimensions for measuring fish on the Riverwatcher? And, can the user set their own?
The scanner plates distance width can be adjusted. The generic setup is 40 cm wide but could be wider if the water is very clear.
How efficient is the Riverwatcher in counting fish? What if the fish have PIT Tags?
What about algae build up, is that a problem?
Algae and/or debris buildup can affect the performance of the counter. For best results, keep the counter as clean as possible. Some sites have a lifting mechanism to access the equipment. The frequency of such maintenance depends on water characteristics but vary from every week to once per month.