Gully pots actively trap sediments transported by urban runoff to prevent in-pipe blockages and surface flooding. However, due to poor maintenance (resulting in sediment build-up) and increasingly extreme wet weather events, the scour of previously-deposited sediments from gully pots is identified as a potential contributor to EU Water Framework Directive failure. While basal sediment scour deterministic models have been developed and validated using laboratory and field gully pot data sets, the ability of these models to predict behaviour at sites other than those for which they were established has not been addressed. Nor has the impact of future rainfall predictions on the role of gully pots as sediment sources been systematically examined. As a contribution to addressing these knowledge gaps, the performance of two gully pot basal sediment scour models of distinct complexity levels are evaluated under current and future rainfall conditions. The output from Model One suggests that the scour-induced total suspended solids in gully pot discharge can be kept well below 25 mg/L if the gully pot fullness level is maintained at under 60%. Results identify the opportunity to incorporate the actual/targeted ecological status of recipients in scheduling gully pot maintenance operations and that proactive gully pots maintenance will reduce the impacts of increased rainfall intensity/duration on the magnitude of sediment scour. Results from Model Two suggest that fine sediments are particularly susceptible to in-pot scour. For example, sediment with a specific gravity of 1.1 and diameter of >63 μm accounts for 50% of scour-induced total suspended solids in gully pot discharge. The effluent suspended solids concentrations predicted by the two models differ by up to two orders of magnitude. However, without further empirical field data pertaining to their respective competences/applications, neither model could be discounted at this stage. For example, the use of Model One is more appropriate in the establishment of gully pot maintenance schedules, with Model Two more suited to the dimensioning of gully pots based on performance requirements. This application, however, relies on the development and adoption of a more stringent regulation on gully pots discharge.

沟壑积极地收集城市径流输送的沉积物，以防止管道堵塞和地表洪水。但是，由于维护不善（导致沉积物积聚）和越来越多的极端潮湿天气事件，先前从沟渠罐中沉积的沉积物的冲刷被认为是造成欧盟水框架指令失败的潜在原因。尽管已经使用实验室和田间集水沟数据集开发并验证了基础沉积物冲刷确定性模型，但是这些模型预测其建立地点以外的地点行为的能力尚未得到解决。也没有系统地检查过未来的降雨预测对沟壑作为沉积物来源的作用的影响。为了弥补这些知识差距，在当前和未来的降雨条件下，评估了两个具有不同复杂程度的沟渠底基冲刷模型的性能。模型一的输出表明，如果将灌水罐的满度保持在60％以下，则灌水在灌槽中的悬浮物总量可以保持在25 mg / L以下。结果确定了将接受者的实际/目标生态状况纳入调度沟渠维护操作的机会，并且主动进行的沟渠花盆维护将减少降雨强度/持续时间增加对泥沙冲刷量的影响。模型二的结果表明，细小沉积物特别容易受到现场冲刷的影响。例如，比重为1.1且直径> 63μm占冲刷沟排放物中冲刷诱导的总悬浮固体的50％。两种模型预测的废水悬浮物浓度相差最多两个数量级。但是，如果没有与它们各自的能力/应用有关的更多经验性现场数据，则在此阶段都无法打折任何模型。例如，使用模型一更适合制定沟渠维护计划，而使用模型二更适合根据性能要求确定沟渠的尺寸。然而，该应用依赖于对食盆排水的更严格规定的发展和采用。如果没有与他们各自的能力/应用有关的更多经验性现场数据，则在此阶段都无法打折这两个模型。例如，使用模型一更适合制定沟渠维护计划，而使用模型二更适合根据性能要求确定沟渠的尺寸。然而，该应用依赖于对食盆排水的更严格规定的制定和采用。如果没有与他们各自的能力/应用有关的更多经验性现场数据，则在此阶段都无法打折这两个模型。例如，使用模型一更适合制定沟渠维护计划，而使用模型二更适合根据性能要求确定沟渠的尺寸。然而，该应用依赖于对食盆排水的更严格规定的制定和采用。