Aquatic Control Engineering

01777 249080

RiverWatcher Fish Counter

The RiverWatch fish counter can be fitted as part of a new installation or can be retrofitted to an existing structure. The counter is presently in operation at over 300 sites across UK and Europe. In studies the RiverWatcher has given upto 98% accuracy depending on the turbidity of the water. The results are via its Infrared scanners which log and record the size and shape of each fish passing through the scanner.

Main Features
• Counts fish with upto 98% accuracy.
• Measures the size of each fish with more than 95% accuracy.
• The control unit stores an image of every fish that passes the scanner, so the counting can be verified afterwards.
• The date and time of day that each fish passes the scanner is recorded.
• The water temperature is measured at frequent intervals.
• The scanner's electronic equipment is housed in a strong plastic frame.
• Power can be supplied from solar panels and a deep cycle battery.
• The counter can easily be adjusted for use in all fish ladders, dams,traps and similar places.
• Storing and presentation of all data from a PC program.
• Remote control.
• The Riverwatcher can be used to trigger a video camera.
• It is possible to connect several counters together and monitor rivers where there are no fishways.

• Comparison of catch figures and the movement pattern of the fish to calculate the exploitation rate.
• Comparison of the movement pattern of the fish from one year to another.
• Evaluation of the results of rearing and smolt releases.
• Assessment of the influence of different environmental factors.
• Assessment of the efficiency of the fish ladder.
• Valuable data for better fisheries management.
• Identification of species, sex, wild/farmed fish etc.