Tag Archives: Katelyn Potter

Much better water quality: Withlacoochee River, Okapilco Creek 2020-03-11

Update 2020-03-16: More testing needed to track river pollution –Suwannee Riverkeeper in Gainesville Sun 2020-03-16.

No rain for a week (since March 5th) meant not much E. coli washed into creeks and rivers.

WWALS is testing upstream this weekend. You can help.

[Composite table]
WWALS Composite table
For context and the entire WWALS composite spreadsheet of data from Georgia and Florida sources, see https://wwals.net/issues/testing/.

Apparently the high numbers WWALS saw on Crooked Creek Saturday a week ago (March 7th) washed on down through Okapilco Creek and Brooks County to the Withlacoochee River by Monday. Apparently that contamination got diluted pretty quickly by all that rainwater coming down from as far north as Tifton.

The most recent numbers we have are Valdosta’s for Wednesday, March 11, 2020, with Knights Ferry, Nankin, and State Line Boat Ramps only slightly above the longterm desired limit of 126 cfu/100 mL E. coli, and below that upstream.

Madison Health tested Tuesday, and got actually slightly lower (135.4) at State Line, and below 126 at CR 150 (Sullivan Launch) and FL 6 (upstream from Madison Blue Spring).

Nobody tested downstream from there in the past week. Nobody knows whether any of the most recent contamination reached the Suwannee River.

[Quitman and Valdosta to Suwannee River]
Quitman and Valdosta to Suwannee River
In the WWALS map of the Withlacoochee and Little River Water Trail.

The USGS gauges upstream from US 84 peaked days ago, and the US 84 (Quitman) gauge is coming down now, soon to be Continue reading →

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 →

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 →

Better: Valdosta and Quitman, Withlacoochee River, Suwanneee River past Santa Fe River 2020-02-22

Something is still getting into Okapilco Creek, and even more into its tributary Crooked Creek. For last week, we could follow it downstream way into Florida, using data from WWALS, Valdosta, and Florida Departments of Health. Fortunately, Friday the Withlacoochee and Suwannee Rivers were within health limits from US 41 above Valdosta down past Branford. You can help.

[State Line Boat Ramp]
State Line Boat Ramp
Photo: Suzy Hall. Somebody stole all our signs from Knights Ferry Boat Ramp, but we will reprint and replant. If you want a sign to hang on your wall, you can just buy it from WWALS; prices are reasonable.

Possible sources of contamination getting into Okapilco Creek and then into the Withlacoochee River from Knights Ferry Boat Ramp on down include (but are not limited to) the Quitman Land Application Site (LAS), a sewage settling pond and another sewage pond, and lots of cows. We continue testing to find out.

[Quitman Land Application Site]
Quitman Land Application Site
in WWALS map of Withlacoochee and Little River Water Trail (WLRWT).

Whatever it was, it went way down the Suwannee mid-week last week, maybe even as far as Rock Bluff Ramp at CR 340 below Branford. Yet what I detected on Crooked Creek Friday didn’t even make much of a mark on Continue reading →