SGER: Geomorphological Effects of the 2005 Flood of the Saskatchewan River, Cumberland Marshes, Saskatchewan

这项研究将记录自流量记录开始以来，萨斯喀彻温河（加拿大萨斯喀彻温省东部）最大和持续时间最长的洪水的侵蚀和沉积影响。灾后侦察观测表明，洪水受上游大坝泄洪控制，导致主河道加宽和加深，河床泥沙向堤顶、洪泛平原和吻合的分流河道大量位移。这些初步的观察结果将被一个跨海峡地形调查和沉积物取样项目记录下来，然后与洪水前完成的类似调查进行比较。这项工作的结果将提供关于洪水对大型水坝下游河流系统影响的性质的新信息，在这种情况下，河流由于蓄水而缺乏沉积物。它还将有助于更好地理解崩裂（主要河道改道）后河流系统的演变，崩裂发生在20世纪60年代初大坝建成之前。

This research will document the erosional and depositional effects of the largest and most sustained flood of the Saskatchewan River (eastern Saskatchewan, Canada) since discharge records were begun. Reconnaissance post-flood observations showed that the flood, controlled by upstream dam releases, caused widening and deepening of main channels as well as major displacements of channel-bed sediment to levee tops, floodplains and anastomosed distributary channels. These initial observations will be documented by a program of cross-channel topographic surveys and sediment sampling and later compared to similar surveys completed before the flood.The results of this work will provide new information concerning the nature of flood effects on river systems immediately downstream of large dams, a situation in which the river is starved of sediment due to impoundment. It will also contribute to a better understanding of how river systems evolve after avulsion (major channel diversion), an event which preceded construction of the dam in the early 1960s.