News & Updates
Fish Passage Guidelines
Hi everyoneThe Fish Passage Action Team have been working on a simple one-page guide to help with the remediation of common structures causing a barrier to fish.The guide includes a link to an interactive decision tool and some helpful before & after...
Comparing Baffle Types in Round Culvert
Hi everyone, We hope you are staying safe and well. As shared a short while back, we have started using Computation Fluid Dynamics (CFD) to solidify what we already knew about culvert/weir baffles and their fish passage improvement features. CFD is a...
Mini-Hydro Intake Weir
Hi everyone Below is a photo showing modifications to a back-country mini-hydro intake weir. The original fish pass and minimum residual flow devices were not functioning. The new design successfully allows expected species, all of which are climbers - longfin eels,...
Video From OZ
Hi everyone Below is a YouTube link to a video sent to us from Greg Wallis in Australia.It shows common galaxiid/inanga (Galaxias maculatus) trying to navigate a vertical wall at a large box culvert.Despite these fish showing amazing burst-swimming abilities to scale...
Wetland habitat improvement
Following the restoration of fish passage into the Pongakawa Wetland (Bay of Plenty, NZ), the upstream habitat has been further enhanced by deploying Floating Nurseries that provide shade and refuge for aquatic and terrestrial species while also improving water quality.
Eels Swimming Cross-Country
Hi everyone It is widely believed that eels can cross land between water bodies however little is understood as to how or why. This rare footage captured by Tim Olley shows a medium-sized NZ Longfin eel taking advantage of a flood event to migrate upstream across what...