Abstract Approach, methods, and results from a comprehensive integrated water resources modeling framework for the Lower Mekong Basin (LMB) are presented in this paper. The modeling suite was specifically tailored to the known conditions and data availability at key locations within the LMB and more particularly within the floodplains of Cambodia and the Mekong River Delta of Vietnam. Model simulation output was used to project cumulative changes to hydraulic, sediment, and water quality parameters likely to occur in this relatively unique system under multiple scenarios of hydropower development in the LMB. While substantial changes in river flow regimes are predicted as a result of hydropeaking operations especially when combined with dry-season drawdowns to maximize power production, the multiple-scenario analysis indicated that overall, the largest changes are expected to be in loss of sediment and nutrient transport and reduction of water quality due to increased salinity intrusion into areas of the Mekong Delta.

中文翻译：

---

评估拟建的湄公河下游流域水电级联对湄公河漫滩和三角洲的累积影响——综合建模方法和结果概述

摘要 本文介绍了湄公河下游流域 (LMB) 综合水资源综合建模框架的方法、方法和结果。该建模套件专门针对 LMB 内关键位置的已知条件和数据可用性，尤其是在柬埔寨洪泛区和越南湄公河三角洲内。模型模拟输出用于预测在 LMB 的多种水电开发情景下，在这个相对独特的系统中可能发生的水力、沉积物和水质参数的累积变化。虽然预计水峰作业会导致河流流量状况发生重大变化，特别是当与旱季下降结合以最大限度地提高发电量时，多情景分析表明，总体而言，