Hydrologists and water monitoring specialists at the St. Johns River Water Management District are on the quest to find submerged springs along the bottom of the Saint Johns River and to understand the springs’ input to the river system when the river level is at different stages. Quantifying the inputs from different sources into the river is an important goal for the team, as increasing nutrient levels are affecting the growth of vegetation and the quality of the water supply. How did they set out to tackle this challenge?

They already owned a SonTek RiverSurveyor M9 for routine river discharge measurements. After discovering that it was possible to upgrade their M9 to a HydroSurveyor, the SJRWMD now had a new tool for bathymetric and velocity field mapping. With comprehensive data, they could go beyond normal discharge measurements to also:

  • Create bathymetric maps for river flow models...
  • Use M9 velocity data for river flow models...
  • And, use the combined mapping and GPS-referenced velocity data to find and map those submerged springs!

And in addition to mapping, the detailed velocity data will even allow them to quantify the springs’ input into the river—not your normal river discharge measurement. With the M9 and its many integrated features, the team is able to tackle a project that otherwise would have required several instruments.

JOIN SonTek Technical Engineer, Isaac Jones and Applications Specialist, Janice Landsfeld, for a short, insightful webinar that will share the St. John's River story and talk about how the combination of this complimentary technology may be the solution when you’re looking to efficiently measure discharge, map bathymetry and map flow fields. Expect to see site photos, and learn "best practices" when working within this kind of environment.

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