Integrating local knowledge and scientific information can aid in co-developing locally relevant approaches for climate change adaptation and disaster risk reduction. Communities along the Mekong River have adapted to variability in temperature, rainfall, and flooding patterns over time. Rapid environmental change in the Mekong Basin presents a new set of challenges related to drought, altered seasonal rainfall, more frequent high-flow flood events, and water withdrawals for hydropower and irrigation. We present a multi-method approach to understand how local knowledge of the spatial and temporal patterns of floods, droughts, and rainfall can be integrated with scientific information along a flood-prone section of the lower Mekong River in Kratie Province, Cambodia. Participatory hazard mapping of community members’ knowledge of the movement of floodwaters through the landscape enabled interpretation of flood extent mapping using Synthetic Aperture Radar images from the Sentinel-1A satellite. Seasonal calendars of weather patterns and livelihood activities, together with local indicators of flooding, rainfall, and drought were compared with trends in 35 years of rainfall data, and highlighted “pressure points” at the beginning and end of the rainy season where agriculture may be particularly impacted by climate change. We discuss potential applications of our findings for adaptation and hazard planning.

整合当地知识和科学信息可以帮助共同开发与当地有关的方法，以适应气候变化和减少灾害风险。湄公河沿岸的社区已经适应了温度，降雨和洪水模式随时间的变化。湄公河流域快速的环境变化带来了一系列新的挑战，与干旱，季节性降雨变化，高流量洪水事件以及水电和灌溉取水有关。我们提出了一种多方法的方法，以了解如何将柬埔寨洪水来临的湄公河下游多发地区的洪水，干旱和降雨的时空分布的本地知识与科学信息相结合。社区成员通过景观参与洪水运动知识的参与性危害制图，可以使用Sentinel-1A卫星的合成孔径雷达图像对洪水范围制图进行解释。将天气模式和生计活动的季节性日历，以及洪水，降雨和干旱的当地指标与35年降雨数据的趋势进行了比较，并突出显示了雨季开始和结束时农业可能成为“压力点”。特别是受到气候变化的影响。我们讨论了我们的发现在适应和危害规划中的潜在应用。将天气模式和生计活动的季节性日历，以及洪水，降雨和干旱的当地指标与35年降雨数据的趋势进行了比较，并突出显示了雨季开始和结束时农业可能成为“压力点”。特别是受到气候变化的影响。我们讨论了我们的发现在适应和危害规划中的潜在应用。将天气模式和生计活动的季节性日历，以及洪水，降雨和干旱的当地指标与35年降雨数据的趋势进行了比较，并突出显示了雨季开始和结束时农业可能成为“压力点”。特别是受到气候变化的影响。我们讨论了我们的发现在适应和危害规划中的潜在应用。