News & Updates
Reservoir Video
Below is one of Tim's videos featuring the culvert remediation project in the recently published "Lessons Learnt 8". There is some great underwater footage showing how fish navigate upstream utilizing the back-eddies and rest pools created by the flexible baffles. For...
GIS Project
Jordie McDonald has completed a desktop GIS project highlighting the huge number of potential barriers to fish passage in the Northland Region of New Zealand. The extent of the potential barriers is probably typical around NZ the rest of the world....
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...