Tag Archives: Katrina Yancey

Withlacoochee advisory lifted; more FDEP DNA marker and chemical tracer data 2021-01-12

Update 2021-01-21: Clean Withlacoochee 2020-01-14 and Suwannee River tests 2021-01-18.

It’s lifted: the bacterial advisory from Madison and Hamilton Health Departments, because of two successive good sets of results from Madison Health on the Withlacoochee River, the lastest for Tuesday. And Valdosta got good results upstream for Monday. All of which corroborates the Thursday Madison Health, Friday Valdosta, and Saturday WWALS results.

[Lifted, Chart, Markers, Map]
Lifted, Chart, Markers, Map

We also have more DNA marker data from FDEP, for Wednesday, January 6, 2021, which shows continued high ruminant DNA marker results on the Withlacoochee River, this time for Horn Bridge at the State Line, plus CR 150 at Sullivan Launch, and FL 6 just above Madison Blue Spring. Plus some clarifications of what I wrote in the previous blog post.

Before we get into all that, happy boating, swimming, and fishing on the Withlacoochee River! Continue reading

Contaminated Withlacoochee, Alapaha, Suwannee Rivers 2021-01-04; cleaner 2021-01-09

Update 2021-01-14: see clarifications and updates in Withlacoochee advisory lifted; more FDEP DNA marker and chemical tracer data 2021-01-12.

The Withlacoochee, Alapaha, and Suwannee Rivers were contaminated with E. coli Monday, January 4, 2021, all the way from US 41 at North Valdosta Road to US 90 below the Withlacoochee River Confluence, and probably farther downstream, according to Valdosta, Madison Health, and FDEP data for that day. We also have preliminary DNA marker results from FDEP.

The culprit? Ruminants. The only ruminants numerous enough to cause the sky-high DNA marker results for the Withlacoochee and Suwannee Rivers? Cattle.

This is a good example of how when testing happens upstream and down, we can all tell what is going on. Florida needs to fund frequent, regular, closely-spaced water quality testing from the state line to the Gulf. Continue reading

WWALS Summary of FDEP chemical and biological tracers, Withlacoochee and Suwannee Rivers 2020-08-05

Here are the chemical tracer and DNA marker test results by the Florida Department of Environmental Protection (FDEP) that WWALS has frequently mentioned, for example in Current Situation of Water Quality Testing, Suwannee River Basin 2020-08-02.

Below, please also find a summary of those results by WWALS Science Committee Chair Dr. Thomas Potter.

[Human and Ruminant DNA markers]
Human and Ruminant DNA markers

Thanks to Katrina Yancey of FDEP for sending the data, and for acknowledging that FDEP has no objection to WWALS publishing it. I asked FDEP for whatever they wanted to include, and this is what they sent:

“Thank you for asking, we recently set up our new site so it may be helpful to state that more information may be found at DEP’s webpage for the Suwannee River Basin Sampling Locations (https://floridadep.gov/dear/watershed-monitoring-section/content/suwannee-river-basin-sampling-locations).”

The actual data is on the WWALS website.

WWALS Summary of FDEP chemical and biological tracer measurements
on Withlacoochee and Suwannee River samples

Dr. Thomas Potter, WWALS Science Committee Chair

After Continue reading