This is an example of one analysis that is generated by the
Indicators Of Hydrologic Alteration (IHA) software.
Construction of a dam on the Roanoke river in North Carolina
drastically reduced the size and variability of the largest annual
flood downstream. This has grave effects on the
reproductive cycles of many plants and animals downstream,
as well as on the structure of the river channel. The Indicators
of Hydrologic Alteration software
is designed to track such damaging trends.
It has been suggested that releasing one small flood
during the appropriate season may help to reduce the
environmental impact of the dam.
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