Abstract：
Due to rising land development, mitigating the negative effects of land use change is becoming a problem. Understanding how land development affects flood inundation is critical for long-term water resource management. This study evaluates the land use change in the Konkoure River Basin and its impact on flood inundation. The land use changes were assessed using Landsat image (level 1) in August 2006 and August 2021. In addition, we used GIS and remote sensing applications to assess the degree of changes that took place in the Konkoure watershed. According to the findings, 32.16% of the total area became built-up areas, and 35.51% was converted to other land uses in Konkoure watershed. Konkoure\'s most significant change is that 29.50% of forest area transformed into built-up areas and other land uses. The rainfall-runoff-inundation model (RRI) based inundation of the Konkoure River Basin was compared to the MODIS extent between 31 August 2006 and 30 August 2021 flood events. Flood inundation variations in the Konkoure watershed were studied in terms of inundation area, peak inundation depth, runoff volume, and the infiltration rate. As a result, the flood inundation area increased from 139.98 to 198.72 km2 and the infiltration rate decrease from 7 to 5 mm/h. Moreover, we used flow duration curves (FDCs) to fully comprehend the streamflow processes. The result indicates that the Konkoure watershed has experienced flooding partly due to land use change.
摘要：
由于土地开发的增加，减轻土地利用变化的负面影响正成为一个问题。了解土地开发如何影响洪水淹没对于长期水资源管理至关重要。本研究评估了Konkoure河流域的土地利用变化及其对洪水淹没的影响。在2006年8月和2021年8月使用Landsat图像（1级）评估了土地利用变化。此外,我们使用GIS和遥感应用程序来评估Konkoure流域发生的变化程度。根据调查结果,总面积的32.16%成为建成区,35.51％被转换为Konkoure流域的其他土地用途。Konkoure的最大变化是29.50％的森林面积转化为建成区和其他土地利用。在2006年8月31日至2021年8月30日的洪水事件之间，将基于Konkoure河流域的降雨-径流-淹没模型（RRI）与MODIS范围进行了比较。根据淹没面积研究了Konkoure流域的洪水淹没变化，峰值淹没深度,径流量,和渗透率。因此,洪水淹没面积从139.98km2增加到198.72km2，入渗率从7毫米/小时降低到5毫米/小时。此外，我们使用流量持续时间曲线（FDC）来充分理解流量过程。结果表明，Konkoure流域发生了洪水，部分原因是土地利用变化。
