News & Updates
Lessons Learnt 8
The NZ Dept Conservation Fish Passage Advisory Group website has a number of Lessons Learnt describing different fish passage remediation projects. Tim Olley spent over a year researching and putting together this comprehensive report highlighting the effectiveness of...
RIPRAP Followup
We received heaps of thoughtful feedback from engineers and ecologists regarding the last mail-out, so we have summarized the comments below. The projects in question are typically the often steep outfalls from culverts or other structures, as opposed to stream...
Keep Up The Good Work
Shane Scott has put together this short video showing some low cost fish passage remediation projects across North America. Note the different configurations used to suit each site. Also enjoy the great commentary with the Johnson Creek segment. Contact Shane...
RIPRAP
Stop this disaster! It is now common practice to use large, similar sized, rip-rap (boulders) to manage downstream erosion at structures. Above is typical example of a recent culvert upgrade where extensive rock armouring has caused water to be sub-surface and spread...
Brook Channel
Restoring fish passage is great, but don't forget about the habitat!In natural environments, overhanging vegetation is important for shade, refuge and a food supply, but also helps fish migrate up along the edges of waterways.This video shows a trial project funded by...
Box Culvert Remediation For Fish Passage
Please take a minute to watch this short video showing the effects of flexible baffles fitted to the invert of a box culvert.This is a newly installed culvert (replacing an old smaller round one) under a public road in the Bay of Plenty, New Zealand.It is hoped...