Modelling time varying roughness coefficients

What is it about?

During summer, plant growth in rivers may cause an increase in the observed water level. This paper discusses how to implement this phenomena in two different commonly used commercial software packages.

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Why is it important?

Accurate water level predictions are required in many applications in river basin management. For rivers where aquatic plant growth plays an important role this paper offers a solution for the observed discrepancies between modeled and observed water levels.