Environmental and Water Resources Institute
The Colorado Environmental and Water Resources Institute Chapter looks to promote the field of water resources and environmental industry. The chapter is currently working to revitalize the institute and building interest locally. The chapter hopes to host quarterly presentations in the future. We are looking for speakers and sponsorships for future events. If you want to join in to revitalize the chapter, sponsor, speak at an event, or have any questions, please reach out to the current chair, Tasha Neel, at tashaneel.asce@gmail.com.
NEWS
​​​​NOVEMBER TECHNICAL MEETING:
Join EWRI for a technical meeting on exciting advancement of the flow duration curve online only due to forecasted snow storm.
When: November 6, 2024 at 6:00pm MT
Where: Virtual Option Only
Cost: Free for virtual attendance
1 PDH will be offered for attendance
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Title: The Enhanced Flow Duration Curve by Rick Koehler
Abstract:
Flow duration curves (FDCs) are a common hydrologic analysis technique examining the cumulative distribution of a streamflow record. Yet despite multiple variations developed over the past 100 years, FDCs have never been able to display or quantify day-to-day streamflow information…until now.
Presented is a way to create “enhanced” flow duration curves (eFDCs) simply by adding the lag (1) autocorrelation scatterplot to the basic FDC. This produces a graphic showing the daily streamflow properties of magnitude, frequency, duration, timing, day-to-day discharge change, and temporal autocorrelation across different flow ranges. Also displayed are graphical regions of flow increases (dQ/dt > 0), decreases (dQ/dt < 0) , or persistent flow (dQ/dt = 0).
The result is a set of eFDCs which can provide detailed historic streamflow summaries, provide guidance for restoration efforts, monitor hydrologic alterations, quantify streamflow change on a day-to-day basis, or provide a detailed model analysis technique.
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​​​SAVE THE DATE:
2025 World Environmental & Water Resources Congress is May 18-21, 2025 in Anchorage, Alaska!
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Recent Presentation - MHFD
Holly Piza gave a fantastic presentation to our members this past June. Make sure you follow our emails to attend our next event!
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