These are video supplement files to Wilson & Coulthard (2021), produced using version 1.8f-WS of CAESAR-Lisflood software, available on Zenodo here. For a full description of the methodology and case studies, please refer to the paper which is available here: https://doi.org/10.5194/gmd-2021-340. Video animations (no audio) for the following case studies are included: 1. Carlisle, United Kingdom (carlisleanimation-sourcetracing.avi and carlisleanimation-depthonly.avi): Simulation of the January 2005 flood event at the confluence of the Rivers Caldew, Petteril and Eden, using a 5 m grid. Both water source tracing and depth only versions are provided. In the water tracing version, blue colours represent flows from the River Eden, reds are from the River Petteril and greens are from the River Caldew; darker shades represent deeper water. Available on YouTube here: https://youtu.be/xOtOi06cXvA In the depth only version, darker shades of blue represent deeper water, with no information about the water source in a grid cell. Available on YouTube here: https://youtu.be/aFz-sPRGHVE 2. Avon-Heathcote estuary in Christchurch, New Zealand (avonheathcoteanimation.avi): Simulation for July 2017, which included a high flow event on 22 July, using a model grid of 10 m. Blue colours represent flows from tide, reds are from the River Avon and greens are from the Heathcote River; darker shades represent deeper water. Available on YouTube here: https://youtu.be/Fczr5tczzXU 3. Amazon (amazonanimation.avi): Simulation at the confluence of the Solimões (mainstem Amazon) and Purus rivers in the central Amazon, Brazil, for the period of 1 October 2013 through December 2014, using a ~270 m model grid. Red colours are from the Solimões, green colours are from the Purus; darker shades represent deeper water. Available on YouTube here: https://youtu.be/PknAL_8fd1I 4. Planar slope (planaranimation.avi): A simple test case consisting of a 2000 x 1000 m planar slope (0.001 m/m), with walls added at 250 m intervals across the slope, each of which has several gaps through which water can flow. Model grid was 5 m. Eight water sources were traced in total, with three visualised in the animation: red = source 2, green = source 4, blue = source 6. Depths are shown in the middle plot. Available on YouTube here: https://youtu.be/DTw8ysJtx8o Please feel free to use these animations, under the terms of the CC-BY-4.0 license. Please provide a link back to this site and a citation to Wilson & Coulthard (2021). Reference: Wilson, M. D. and Coulthard, T. J.: Tracing and visualisation of contributing water sources in the LISFLOOD-FP model of flood inundation, Geosci. Model Dev. Discuss. [preprint], https://doi.org/10.5194/gmd-2021-340, in review, 2021