Fishways are used worldwide to restore fish migration routes. However, there are few standardized metrics that allow the comparison of their performance in a consistence manner. This paper aims to assess fishway internal passage using two standardized metrics: passage success and transit time. Data from selected 20 field stepped fishways evaluation were gathered from a systematic review and own field experiments, considering potamodromous species as target fish. The influence of main biological and hydraulic parameters on these metrics was analyzed and modeled by logistic regression and survival analysis techniques. Passage success and transit time described reliably fishway performance. Both metrics were significantly influenced by fishway type, volumetric power dissipation, height drop between pools, slope, obstacle height, pool depth, species and fork length in fishway passage. This work may serve as a guide for all engineers and managers working in fishway assessment, design and management to assess and compare other fishways, select proper design parameters and open the discussion and future research on these topics.

全世界都使用鱼道来恢复鱼的迁移路线。但是，很少有标准化的指标可以一致地比较其性能。本文旨在使用两个标准化指标来评估鱼道内部通道：通道成功与通过时间。选定的20个田间阶梯鱼道评估的数据是从系统评价和自己的田间试验中收集的，其中考虑到了含铁的物种作为目标鱼。通过Logistic回归和生存分析技术分析和建模了主要生物和水力参数对这些指标的影响。通行成功和渡越时间可靠地描述了鱼道性能。两项指标均受鱼道类型，容积功率耗散，水池之间的高度下降，坡度，障碍物高度，水池深度，鱼类通道中的种类和叉长。这项工作可以为从事鱼道评估，设计和管理的所有工程师和经理提供指南，以评估和比较其他鱼道，选择适当的设计参数，并就这些主题进行讨论和进一步研究。