Daily Archives: March 2, 2020

Suwannee River contamination running downstream to the Gulf 2020-03-01

Update 2020-03-05: Cleaner Withlacoochee Monday, Tuesday; Suwannee unknown 2020-03-03

Whatever the Saturday contamination is, by Monday it had apparently moved downstream from FL 51 (Hal W. Adams bridge between Mayo and Luraville). Unfortunately, it is not expected to dilute or dissipate. More likely it will be unhealthy all the way to the Gulf. You can help.

[2020-03-01 Suwannee river downstream]
2020-03-01 Suwannee River downstream
The entire WWALS composite spreadsheet of all known data sources is on the WWALS google drive.
For context, see https://wwals.net/issues/testing/.

Katelyn Potter of SRWMD forwarded a message from SRWMD Water Resources Chief Darlene Velez, saying “results below from samples collected Sunday 3/1/2020.”

Suwannee at US90: Fecal – 98 mpn/100ml; E. coli – 172 mpn/100ml
Suwannee at CR250: Fecal – 131 mpn/100ml; E. coli – 116 mpn/100ml
Suwannee at SR51: Fecal – 187 mpn/100ml; E. coli – 114 mpn/100ml

She depicted all those numbers as green. By our color scheme, the 172 E. coli is orange, because it’s higher than the 126 cfu/100 mL that is what longterm averages should be below. See also what do these numbers mean?

She continued:

I also ran some calculations:

From Withlacoochee (Pinetta) to Suwannee (Ellaville) the dilution factor is 0.49

From Suwannee above Santa Fe River (Luraville) to Suwannee below Santa Fe River (Rock Bluff) the dilution factor is 0.78

We have several springs backflowing now with river levels up, and we are losing approximately 1000cfs to the aquifer between Ellaville and Luraville gages.

On the Suwannee the water velocities are between 1 and 1.5 mph, so the high bacteria we got at SR51 on Saturday morning should be near Manatee Springs tomorrow (Tuesday 3/3) morning and to the Gulf of Mexico sometime Wed (3/4). Based on the dilution factors above the 980 E. coli we got at SR51 is unlikely to be diluted below health threshold below the Santa Fe River.

Please let me know if you have questions. Continue reading →

Source of the Alapaha River 2020-02-27

What’s the source of the Alapaha River like? Well, it’s in some woods on private land in the edge of Dooly County, Georgia, was all I could say, other than a map and the GPS coordinates.

Thursday I happened to be near there, so I asked the landowner if I could go look, if I told other people not to go in there. She said if you get stuck there will be nobody to pull you out. I’ll walk, I said.

Through many catbriars and mud (without mud boots), I found something surprising:

[A mound!]
A mound!

Here’s a 360 degree movie from the top of the mound. Continue reading →

Still bad Saturday: Withlacoochee and Suwannee River to Mayo and Luraville 2020-02-29

Update 2020-03-02: Suwannee River contamination running downstream to the Gulf 2020-03-01.

Still bad water quality all the way to Luraville and Mayo, according to FDOH Friday for the Withlacoochee River and SRWMD Saturday for the Suwannee River.

A catalog of WWALS, Valdosta, Lowndes County, FDEP, FDOH, and SRWMD results is at wwals.net/issues/testing/. You can help.

[2020-02-29--excerpt-WWALS-composite-wq-results]
2020-02-29–excerpt-WWALS-composite-wq-results
Extract from WWALS composite water quality test results from Georgia and Florida.

A couple days ago I remarked that nobody knew the water quality of the Suwannee River downstream from Dowling Park, because nobody had tested that. Saturday SRWMD did test down at the Hal W. Adams Bridge on FL 51, between Mayo and Luraville, and the result was above the alert level of 1,000, while at Dowling Park it was back below the too-high level of 410. Apparently something was moving down the Suwannee River.

We still don’t know what’s going on downstream of FL 51, for example at US 27 (Branford) or CR 340 (Rock Bluff Ramp). This is more evidence that we need regular, frequent, testing at all these locations, not just after a spill or other upstream alert.

Thanks to Katelyn Potter of the Suwannee River Water Management District (SRWMD) for forwarding the Florida updates late Sunday evening. Thanks to SRWMD and Madison Health for testing on a weekend, and to Florida Department of Health (FDOH) for helping. Thanks to Florida Department of Environmental Protection (FDEP) and Julie Espy for posting results on an FDEP web page. No update on Valdosta’s results website for Friday yet.

WWALS testers Conn and Trudy Cole got Continue reading →