**To what extent do fish passage facilities and culverts allow upstream and downstream passage of fish at barriers?** This project is funded by [Fisheries and Oceans Canada][1] (DFO) and is led by members of the [Canadian Centre for Evidence-Based Conservation and Environmental Management (CEBCEM)][2] based at [Carleton University][3] (Ottawa, ON). This systematic review will be highly relevant to environmental practitioners (including engineers and ecologists working for industry and government) tasked with determining if, when, where, and how fish passage facilities and culverts should be incorporated into barriers. Moreover, the knowledge gaps identified in the review and insight gained on what constitutes a “quality” study will be relevant to scientists and funders. Specific to the Canadian context, this review will support the Fisheries Protection Program (FPP) of DFO (the regulatory agency responsible for fish habitat protection in Canada) with their duties related to the *Fisheries Act* but given its global focus, the findings will be relevant to practitioners and regulators anywhere that fish connectivity in fluvial systems is impaired and where fish passage is considered as a potential strategy for mitigation. - Read and comment on the [systematic review protocol][4] - Read more about the [review team][5] leading the project - Read more about the [advisory team][6] of experts [1]: http://www.dfo-mpo.gc.ca/ [2]: http://carleton.ca/frontdoor/cu-facilities/canadian-centre-evidence-based-conservation-environmental-management-cebcem/ [3]: http://www.fecpl.ca/ [4]: https://osf.io/evgxs/ [5]: http://osf.io/xvzbf/wiki/Review%20Team/ [6]: http://osf.io/xvzbf/wiki/Advisory%20Team/