Fish Passage, Dam Impacts, Fishway Evaluations

We have been continuously monitoring fish passage and the effects of dams and weirs on fish and other wildlife for over 19 years. We use remote monitoring techniques such as radio telemetry, acoustic telemetry, physiological telemetry as well as overhead and advanced underwater videography to unobtrusively observe animals. We also use active and passive capture techniques to collect, inventory and enumerate study organisms while characterizing and describing used and available habitat under various environmental conditions. Experienced teams of technicians collect and analyze data, and a proven team of scientists prepare reports and scientific papers. By understanding effects of barriers to fish migration, and the effects of different types of habitats that exist upstream and downstream from river barriers, we can suggest strategies that selectively increase permeability, and imperceptibility of migration barriers for fish.

• Fish passage in South America (Brazil)

• Performance of Fish Passage Structures at Upstream Barriers to Migration

• Thornbury Fishway Rainbow Trout Passage and Near Real-Time Fish Counts

• Springbank Dam - Open Dam Gates and Fish Movement

• Micro-hydro Turbine Effects on Trout

• Maple Hill Dam Fishway Evaluation

• PIT Telemetry and Denil Fishway Monitoring

• Mannheim Fishways

• Fishway Enhancement

• Dunnville Fishway Project

• Walleye Passage

• EMG Telemetry Studies

• Dam Effects on Eel Migration

• Dams and Benthic Fishes

• Bypass Channels and Northern Pike

• Barrier Passage by Northern Pike

• Video Monitoring of Fishway Passage use

 
Longhorn Dam, Austin Texas - Blue sucker spawning area (above0
Decker Dam, Lower Colorado River, Texas (below)

  
Pool and weir fish pass built in 1973 in Brazil near Venâncio Aires, Brazil

Spillway and floodgates damaging fish with extreme shear-force flows in Brazil