Flood Frequency: Calculating 100-Year Floods

Everyone knows that a 100-year flood is a really big flood. But not all big floods are 100-year floods, and a 100-year flood is not necessarily the same as a 100-year storm. So…how can you ensure your floodplain structures are designed to handle any flood nature may have in store?

Join returning speaker Doug Beyerlein, P.E., P.H., D.WRE, in our online training webinar as we examine the different flood frequency methods available to an engineer, the key assumptions contained in each method, and how to select the appropriate flood frequency method for the engineering job at hand. We’ll also discuss situations where flood frequency is not the appropriate design parameter and what flow-related method should be used instead.

Specifically, we’ll discuss how engineers use flood frequency as a design standard in sizing many, if not most, structures within a floodplain—ranging from designing culverts and bridges, to determining roadway and building elevations, to sizing flood control structures. Calculating a flood frequency value is not difficult, but selecting the appropriate flood frequency method to calculate the frequency flow value can be.

Learning Objectives
Attendees can expect the discussion and education of the following learning objectives.

  • Understand why flood frequency is not the same as storm frequency.
  • Explore the different methods for calculating flood frequency.
  • Analyze the key assumptions built into each flood frequency method.
  • Learn the regional hydrologic characteristics that are important in flood frequency method selection.
  • Determine when flood frequency is not the appropriate design parameter.

To learn more about this webinar, which would be presented by DOUGLAS BEYERLEIN, P.E., P.H., D.WRE, on 7th September, 2017, you can click on the following link.

They’re here….our print Hydrological Sciences Journals 2015 are here!

So I am doing another happy dance as Volume 60 Issues 1-8 of our Hydrological Sciences Journal have been delivered. We are expected to get four more issues, i.e. 9-12.

So Taylor and Francis have definitely made my day and I hope yours too since this information is now available for perusal.

Please see below for a breakdown of what each of the four books contain.

  1. Hydrological Sciences Journal Volume 60 Issues 1-2 2015:

This journal contains 379 pages and presents articles on topics such as climate change risks and water management; future water stress; modelling regional impacts and water resources; peak discharge estimation; surface soil water content; hydrological trends; salt intrusion model in Malaysia; water yield effects; land surface temperature; index-flood model; sediment transfer; artificial recharge by floodwater and transient phreatic surface mound.

Also contained in this journal is a book review for Introduction to Physical Hydrology by Martin R. Hendriks, 2010; Oxford University Press

2. Hydrological Sciences Journal Volume 60 Issues 3-4 2015:

This journal presents articles and case studies on a wide variety of topics which include bias compensation in flood frequency; hydrograph evaluation; catchment behaviour, rainfall selection and flash flood; data series interpolation; runoff of climate change; runoff and water temperature; global hdrological models; current trends in climate parameters; curve number adjustment; modelling climate and land-use; sewer overflow; groundwater depletion; water balance; source identification and water storage.

Hydrological Sciences Journal Volume 60 Issues 1-2 and 3-4
Hydrological Sciences Journal Volume 60 Issues 1-2 and 3-4

3. Hydrological Sciences Journal Volume 60 Issues 5-6 2015:

This journal  contains a special issue of Evaluating Water Resources with SWAT, as well as, articles and case studies on topics such as advances in water resources assessment; spatial-analysis of SWAT; modelling spatial distribution; agricultural management and SWAT model; SWAT sub-field investigation; surface water-groundwater model; climate change impacts; water inflow and a coastal lagoon; calibrated parameter sets; flood peaks and volumes; seasonal climate patterns; continuous streamflow simulation; monitoring acidic water; parameter uncertainty and sensitivity analysis; new fuzzy linear regression; predicting daily pan evaporation; saturated hydraulic conductivity and LISEM and seasonal and inter-annual variability.

4. Hydrological Sciences Journal Volume 60 Issues 7-8 2015:

This journal contains a special issue on “Modelling Temporally-variable Catchments”, as well as, articles and case studies on various topics which include hydrological models and changing conditions; hydrological models and changing catchments; comparative assessment of AWBM and SimHyd; hydrological impact and forest fire; wildfire impact and runoff; ECOMAG model; temporal variability and catchment response; HBV model and parametric uncertainty; model performance and parameter variability; current runoff variations; bushfire and climate variability; kinematic wave-based hydrological model; COSERO precipitation-runoff model; graphical tools  and catchment behaviour; parameter transferability and changing climate; flood estimation and hydrological modelling and temporally-variable catchments.

Hydrological Sciences Journal Volume 60 Issues 5-6 and 7-8
Hydrological Sciences Journal Volume 60 Issues 5-6 and 7-8

For those of you interested in taking a closer look at our new journal acquisitions, please feel free to email me or drop by my desk. 🙂

Please be reminded that articles are also available at  Taylor and Francis Online, till December 31 2015 for which you would require a username and password which I would provide you with.