Hydrographers with Rating Curve Design.

I am very happy to announce that the paper: The Role of the Hydrographer in Rating Curve Development has now been published in Confluence: Journal of Watershed Science and Management. Marianne Watson, Robin Pike, and I all learned a lot from each other in the process of writing this paper, resulting in a product that is greater than the sum of the inputs....

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An image showing stage discharge rating curve.

Extreme flows are extremely hard to gauge, hence we get very few gaugings to accurately define the top-end of stage-discharge rating curves. This is a problem. Whereas empirically calibrated functional relationships can be trustworthy for the purpose of interpolation, they can be notoriously unreliable for extrapolation. One needs to be very careful about extrapolating any rating curve to an ungauged extreme....

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Stage vs. discharge plot.

A recommended read for anyone interested in uncertainty is Keith Beven's (2015) 'Facets of uncertainty: epistemic uncertainty, non-stationarity, likelihood, hypothesis testing, and communication,' (Hydrological Sciences Journal, DOI: 10.1080/02626667.2015.1031761). There are many points that Keith Beven makes that I strongly agree with, but today I would like to focus on one question he uses as a section heading: "Can we talk of confidence rather than uncertainty...

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Trends in the hydrological monitoring industry.

Aquatic Informatics’ global survey of over 700 water professionals in 90 countries puts a spotlight on an industry undergoing rapid change. Key trends include significant growth in network size, modernization of monitoring technology, and an increasing demand for comprehensive data management systems. After months of refining survey questions, collecting responses, and analyzing the results, the new report Global Hydrological Monitoring Industry Trends has been released. I...

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