A stream with a high volume but a low gradient may result in the erosion of the surrounding land as the fast-flowing water will be able to carry a larger amount of sediment. Over time, this can lead to the formation of wider and deeper channels, as well as the creation of floodplains due to the deposition of sediments.
A stream with a high volume but a low gradient would tend to meander or change its course frequently. The slow flow and high volume of water would lead to erosion along the banks, resulting in the formation of wider floodplains and sediment deposition in lower gradient areas.
A stream with a high volume but a low gradient is likely to erode the land rather than change it significantly. The greater volume of water will still have enough force to pick up and transport sediments, but the low gradient indicates that there won't be significant energy to create new landforms or reshape the terrain.
