So, to counter the subsidence there is up-building -- called aggradation. From Wordnik.com. [R. Jude Wilber: It's the Sedimentology, Stupid] Reference
Glen Canyon dam to the north of the park has noticeably reduced the rate of water flow down the Colorado River course, and changed the seasonal pattern of sediment aggradation degradation. From Wordnik.com. [Grand Canyon National Park, United States] Reference
Such extraordinary aggradation typically buries or severely damages infrastructure, triggers channel instability, reduces the ability of channels to convey water, and leads to substantially increased flood hazards. From Wordnik.com. [volcanic ash hazards and ways to minimize them] Reference
Comparative studies with other volcanoes show that such extraordinary sediment delivery commonly leads to drastic aggradation of riverbeds and valley floors; for example, see consequences of erosion of pyroclastic flow deposits at Mount Pinatubo, Philippines. From Wordnik.com. [volcanic ash hazards and ways to minimize them] Reference
Normally, this sediment would add to the height of the land, a process known as aggradation. From Wordnik.com. [Rocket News] Reference
Deltas with "virtually no aggradation (supply of sediment) and/or very high accelerated compaction". From Wordnik.com. [Rocket News] Reference
Magirl, who has examined aggradation rates and historical records for downstream river stretches, sees similar buildup in several locations. From Wordnik.com. [The Seattle Times] Reference
Further, river Kosi and other rivers of Bihar are characterized by high sediment load, mainly wash load which causes rapid aggradation of the river bed. From Wordnik.com. [American Chronicle] Reference
This process is called aggradation. From Wordnik.com. [Fluvial landforms] Reference
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