I have traveled to the future. In the future, we will all drive on the left hand side of the road. Gangs of sheep and cattle will roam with impunity over bright green pastures. The All-Blacks will not dominate international…
Nordic Creek AutoSalt Site Wagner blasted in our headsets as Mark the pilot and I crested Hermit Ridge and the full spectacle of the mountain scene fell on my retina. I struggled to comprehend it all. Ventego Lake, a beautiful…
Sometimes we find inspiration where we are not expecting it. Figure 1. shows the staircase to my room in Vienna, Austria where I co-organized the “2018 Vienna Flow Regatta, Q-Competition, and Lunch” on April 13, 2018 with Beat and Maxence…
It was a bright afternoon as I made my way across the prairies to Lethbridge. The sky loomed large and foreboding with the weight of the impending Q competition. The sharpest hydrometric minds in the country were converging to test…
Introduction This article will lead you through a salt dilution flow measurement using the QiQuac system. It is the same procedure using any other EC and temperature system, but the diagnostics and calculated Q will not be available in real-time. …
This article is a more detailed examination of the Sources of Uncertainty referenced in Quantifying and Controlling Error in Salt-Dilution Measurements. It is based on material presented most recently at the CWRA Conference in Lethbridge, Alberta, Canada, April 2017 (Lethbridge_Salt_Dilution_Uncertainty_V0.9). Injection…
This article is based on material presented at the AWRA Conference in Virginia, USA, Nov 2014 (AWRA_Salt_Dilution_CFT_V0.3) which was co-authored by Gabe Sentlinger (ARD), Mark Richardson (UBC), Andre Zimmerman (NHC), and John Fraser (ARD)†. Abstract The Calibration Factor – Temperature…
Introduction Salt-Dilution Instream Q (SDIQ) a method in which a known mass of salt is injected upstream of a conductivity probe and the conductivity signal measured. The technique has been used for decades. An introduction to the technique is described…
The following is adapted from “Introduction to Salt Dilution Gauging for Streamflow Measurement Part IV: The Mass Balance (or Dry Injection) Method” by Rob Hudson and John Fraser, with permission from the authors, published in Streamline Watershed Management Bulletin Vol.…
We offer custom solutions to hydrometric and hydrological problems. We are keen to hear about particular solutions you might require. For more information, or a quote, please contact us using the form below.
