baffled culverts
baffled culverts
(OP)
Anyone had any luck convincing the regulators that a baffled culvert is appropriate.
I am having trouble meeting fish passage requirements with less than 5 CSP culverts and a bridge is way too expensive. I’m in a location where slopes are low, typically less than 1%, so I thought I’d try a baffled culvert. The ones with vertical steel plates welded inside the culvert. They have been used in other jurisdictions but I’m having a lot of trouble getting the regulators here to consider it.
They say that maintenance, keeping the pipe clean, will be a problem. I argued that the high flows should wash it clean, they didn’t buy it. Sedimentation will change the hydraulics of the pipe and result in a blockage to fish passage.
Anyone else have an argument that has worked, or an alternative solution……
I am having trouble meeting fish passage requirements with less than 5 CSP culverts and a bridge is way too expensive. I’m in a location where slopes are low, typically less than 1%, so I thought I’d try a baffled culvert. The ones with vertical steel plates welded inside the culvert. They have been used in other jurisdictions but I’m having a lot of trouble getting the regulators here to consider it.
They say that maintenance, keeping the pipe clean, will be a problem. I argued that the high flows should wash it clean, they didn’t buy it. Sedimentation will change the hydraulics of the pipe and result in a blockage to fish passage.
Anyone else have an argument that has worked, or an alternative solution……





RE: baffled culverts
RE: baffled culverts
KRS Services
www.krs-services.com
RE: baffled culverts
They do have a good point with sedimentation and reduction of capacity of the culverts, that should be taken into consideration when sizing. However, our biologist indicated that natural sedimentation caused by the baffles is ideal for the fish.
PS. This project was in New Brunswick, Canada.
RE: baffled culverts