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...

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...