Tag Archives: EyeonLakeO

Untold Secrets? Temperature and Chlorophyll -eyeonlakeo

Chlorophyll, we learn about it in grade school and know it resides in plants, but really, if you’re like me, you may not think too much about it. I certainly wasn’t pondering until my brother Todd Thurlow sent me some of his exciting new eyeonlakeo publications.

These newer publications include: 1. Movie Sea Surface Temperatures and 2. Movie Chlorophyll. Even for the non-scientist type, they really are fascinating. The one that caught my eye is “movie 2.” revealing color-coded levels of chlorophyll swirling around Florida’s waters from June 2019,  to May 2020. Like rainbow liquid fire, formations twirl and dance around our peninsular home. And what a home it is!

Todd points out, that If you watch closely, there is an eddy that begins off of Ft Meyers with an offshore “puff of red.” (10/22/2019 at 0:11 on the video). This eddy swirls all the way through November!

Then there’s “movie 2. sea surface temperature” with the weird gyrating underwater loop.

Bizarre! What was that?

Todd:

“The loop seemed to be drifting southeast like a big underwater hurricane heading toward the west coast of Florida. (SEE IMAGES BELOW YOU-TUBE VIDEOS)  After 9/5, it is blocked by clouds so the images don’t show it all.  Day’s later an eddy forms off of Ft. Meyers.  I actually have no idea if there was red tide at this time.  Was there?  I’ll have to look later but this is interesting. Maybe these will explain something.  Are these underwater hurricanes, so to speak, picking up the deep nutrients and pushing them to shore? Pulling nutrients offshore and returning them later?

Another interesting point, which ties into my sea surface temperature movie – two days before, on 9/3/2019, the SST movie shows a “belch” of warmer and cooler water traveling north from the Yucatan and Cuba right before the chlorophyll loop current shows up. 

Once again, maybe the scientist can explain….”

The untold secrets, temperature and chlorophyll. Take a look a both videos below! What do you think is going on?

1. Movie Sea Surface Temperatures

(Link to Sea Surface Temperature video: https://www.youtube.com/watch?v=3pHmdFrxvHk&feature=youtu.be)

2. Movie Chlorophyll

(Link to chlorophyll video Todd Thurlow: https://youtu.be/PuPHQKRetQ4)

IMAGES

*A series of images from the movie showing the loop current and the eddy that Todd was describing: 

Florida Chlorophyll a and Martin County Chlorophyll a – MODIS (Terra)The “Florida Chlorophyll a” and “Martin County Chlorophyll a” products pull localized imagery from NASA’s Global Imagery Browse Services (GIBS) gibs.earthdata.nasa.gov. Eyeonlokeo.com queries two layers from the MODIS sensor on the Terra Satellite, cropping the imagery in separate products for Florida and Martin County. The queries pull the CorrectedReflectance_Bands721 (to show land and clouds), layered with the Chlorophyll_A bands (to show concentrations of chlorophyll in the ocean). Note that a concentration of chlorophyll does not indicate a Harmful Algae Bloom (HAB). These layers are provided to allow users to easily monitor the relationship, if any, between the concentration of chlorophyll off the Florida coasts and discharges from Lake Okeechobee through the St. Lucie and Caloosahatchee Rivers. The “Martin County Chlorophyll a” product goes a step further by querying the South Florida Water Management District’s (SFWMD) online DBHydro database (www.sfwmd.gov/science-data/dbhydro). A script pulls the discharge data for the S-80 structure at the St. Lucie canal. S-80 is the spillway located adjacent to the St. Lucie Locks on the C-44 Canal. It is only one of several spillways that empty into the St. Lucie River but it is the terminus of the C-44 canal that carries discharge water from S-308, located at Port Mayaca, together with C-44 basin runoff to S-80 at the St. Lucie Locks. The daily discharge data is added to the bottom of each image. When discharge rates are high at S-80, a large plume of chlorophyll can usually be seen off of the St. Lucie Inlet in Martin County. The plume often moves south close to shore but further from shore the Gulf Stream carries the plume north.Additional layer information from gibs.earthdata.nasa.gov: “The MODIS Chlorophyll a layer provides the near-surface concentration of chlorophyll a in milligrams of chlorophyll pigment per cubic meter (mg/m3) in the ocean. Chlorophyll is a light harvesting pigment found in most photosynthetic organisms. In the ocean, phytoplankton all contain the chlorophyll pigment, which has a greenish color. Derived from the Greek words phyto (plant) and plankton (made to wander or drift), phytoplankton are microscopic organisms that live in watery environments, both salty and fresh. Some phytoplankton are bacteria, some are protists, and most are single-celled plants. The concentration of chlorophyll a is used as an index of phytoplankton biomass. Phytoplankton fix carbon through photosynthesis, taking in dissolved carbon dioxide in the sea water and producing oxygen, enabling phytoplankton to grow. Changes in the amount of phytoplankton indicate the change in productivity of the ocean and as marine phytoplankton capture almost an equal amount of carbon as does photosynthesis by land vegetation, it provides an ocean link to global climate change modeling. The MODIS Chlorophyll a product is therefore a useful product for assessing the health of the ocean. The presence of phytoplankton indicates sufficient nutrient conditions for phytoplankton to flourish, but harmful algal blooms (HABs) can result when high concentrations of phytoplankton produced toxins build up. Known as red tides, blue-green algae or cyanobacteria, harmful algal blooms have severe impacts on human health, aquatic ecosystems and the economy. Chlorophyll features can also be used to trace oceanographic currents, atmospheric jets/streams and upwelling/downwelling/river plumes. Chlorophyll concentration is also useful for studying the earth’s climate system as it is plays an integral role in the Global Carbon Cycle. More phytoplankton in the ocean may result in a higher capture rate of carbon dioxide into the ocean and help cool the planet.”

 ~Todd Thurlow: (http://eyeonlakeo.com/Readme.html)

~Enjoy these, and all Todd’s work, at (http://eyeonlakeo.com)

Very Good-Not So Good~St Lucie to Lake O (4-7-20)

Hi. Today I will provide a water update. Some is good; some is not so good. 

St Lucie River

Although the coronavirus and social distancing is hampering everyones’ ability to visit the St Lucie in large groups, the water in the St Lucie River -at least near the inlet- remains beautiful right now. If you have not been out, you can witness this blue water in photos taken by my husband and me on Saturday, April 4, 2020.

Lake Okeechobee. 11.70 feet. 

The South Florida Water Management District  and Army Corp of Engineers report Lake Okeechobee’s submerged aquatic vegetation, SAV, is really expanding the sun can reach the grass; this is fantastic for fish and wildlife and water quality, however the closely diked east side of the lake does not get the SAV benefit as it is too deep; the slight algae bloom reported there last week remains.  We must be honest and recognize many people feel the lake is too low, but fortunately, there is little chance of discharges from Lake O to the St Lucie and this is a good thing.

~We must note that today the SFWMD made a call for water conservation as much of South Florida is very dry.

~We most keep in mind that predictions are for an above normal hurricane season.  It should start raining in the coming weeks. 

~In all situations, we must keep our eye on lake O.

Please see the photos below a water update! JTL 

LOOKING BLUE! ST LUCIE RIVER AND INDIAN RIVER LAGOON BETWEEN SEWALL’S POINT AND SAILFISH POINT, AN AREA KNOWN AS THE SAILFISH FLATS. SEAGRASS SLOWLY RETURNING. 4-4-20 JTL/EL

ST LUCIE INLET AS SEEN FROM ATLANTIC 

 

LAKE O 

 

 

Submerged Aquatic Vegetation has greatly improved in Lake Okeechobee;  this is great news. The grasses are located in shallow areas but not along the eastern edge where S-308 opens to the St Lucie. The lake is 730 square miles, topography varies. The lake was reported by the ACOE to be 11.70 feet NVGD on 4-6-20. Areas along the shallow western shore look like below. 

 

SFWMD WEEKLY ENVIRONMENTAL CONDITIONS REPORT 4-1-20 (IMAGES FROM…)

 

LAKE OKEECHOBEE’S EASTERN SHORELINE, 5000 FT. THIS SHORELINE WAS DIKED CLOSE IN, THE EDGE IS DEEP SO NO SAV GROWS HERE. 4-4-20JTL/EL.

FPL COOLNG POND EASTERN SHORE, ST LUCIE CANAL or C-44 Canal. S-308 at Lake O. YOU DON’T SEE ALGAE FROM THIS FAR UP. JUST A SHADE OF GREEN. 

 

KISSIMMEE RIVER ENTERS LAKE O. LAND EXPOSED DUE TO LOWER LAKE LEVEL. PRETTY HERE. 4-4-20 JTL/EL.

BUCKHEAD RIDGE 

 

Below: THESE PHOTOS WERE TAKEN THE FOLLOWING DAY, SUNDAY, 4-5-20 ON THE GROUND CLEARLY SHOW BLUE GREEN ALGAE ALONG THE EASTERN SIDE OF LAKE OKEECHOBEE AND THE S-308 STRUCTURE THAT ALLOWS WATER INTO THE C-44 CANAL FOR AGRICULTURAL IRRIGATION.

AT THIS TIME NO WATER FROM LAKE O IS GOING THROUGH S-80 AT THE ST LUCIE LOCKS AND DAM TO THE ST LUCIE RIVER. WE WILL CONTINUE TO REMEMBER THE ALAGE BLOOMS BROUGH ON BY LAKE O IN 2016 AND 2018 AND KEEP OUR EYE ON LAKE O

EASTERN SHORELINE OF LAKE O ALGAE IS APPARENT! VERY DARK WATERS.

SITTING ON ROCKY SHORELINE OF EAST LAKE OKEECHOBEE,  SUGARCANE BURNING BEHIND ME, ANCIENT SHELLS IN HAND. ~Photo Ed Lippisch 

WALKING THE EASTERN SHORELINE OF LAKE O (VIDEO) 

 

SHELLS ALONG AN EXPOSED BEACH DUE TO LOWER LAKE LEVEL 

BLUE GREEN ALGAE INSIDE S-308 STRUCTURE/C-44 CANAL

INSIDE C-44 NEAR A CULVERT 

LOOKING OUT OF THE C-44 CANAL TO OPENED S-308 STRUCTURE FOR BOATS

BACK OF S-308 

INSIDE S-308

LOOKING SOUTH WEST, LAKE O. THE S-308 STRUCTURE IS TO THE LEFT OUT OF PICTURE

ED AND OUR GERMAN SHEPHERD LUNA LOOK ON

Thank you to my brother Todd Thurlow for his web site http://www.eyeonelakeo and thank you to my husband Ed Lippisch for being on this journey with me for the past twelve years. Onward! 

*Friend Paul Millar shared these photos of S-308 today, 4-6-20 3:30pm, so this post is now very updated.  Thank you Paul! 

 

How Much Water Has Flowed Backwards From C-44 to Lake O?

My recent post about “Holding Lake Okeechobee’s Algae at Bay” got a lot of responses with a few questioning whether the algae bloom in Lake O off Port Mayaca was caused by the waters of C-44 flowing back into the lake.

(https://jacquithurlowlippisch.com/2019/08/19/holding-lake-okeechobees-algae-at-bay/comment-page-1/)

~A valid question.

I do not know the answer to this question, but I do know flights over the C-44 canal in 2019 have shown no visible algae blooms, but many in the lake with some right off Port Mayaca. Nonetheless, we know the  C-44 is full of nutrient pollution.

Today I want to share a chart from my brother Todd Thurlow’s website http://eyeonlakeo.com/ as well as our back and forth on the issue of how much water has been put into Lake Okeechobee from C-44 so far this year rather than going into the St Lucie River. The ACOE can flow C-44 flow both ways…

Be sure to read “Summary of Query Results” below for the answer.

Todd: Jacqui, I changed my DBKey on my daily spreadsheet to S-308 just to see what it would spit out.  See below.  It looks like S-308 has sent a net 17billion gallons of C-44 basin water (over 54,000 AF) into Lake O this year.  I am pretty sure that means we get a “free” 17billion gallons in our direction before it is considered “Lake Water”.

Jacqui: Todd did the ACOE start sending the C-44 canal water back to Lake O May 29th? Looking at the chart this is what I see. 

Todd: There has been little flows all year as can be seen on the chart too but the big flows started on May 13 at -2042cfs.  There was a pause between June 4 and July 30.  Then is started again with a few days off here and there.  Here is the data that is summarized in that chart.

The May 29 date that you might see (its actually May 20) is where the “Cumulative Total Discharge” graph crosses the zero axis?  That is where the net flows for the year were back to zero.  In other words, it took from May 13 to May 20, 8 days of westward flow, to cancel out all of the net eastward flow for the year.

SFWMD canal and basin map. C-44 can run east to the St. Lucie or west to Lake Okeechobee.

These DEP canal summaries are no longer available on-line but remain good references even though written in 2001.

 

 

Top 25 Discharge Years to the St Lucie and Calooshahatchee

S-80 Spillway at St Lucie Locks, Top 25 Discharge Calendar Years, 1953 to 2019. Source SFWMD DBHydro, courtesy of Todd Thurlow.

“Destruction by the Numbers” Lake O & C-44; S-79

Although the St Lucie River was declared “impaired” by the state of Florida, in 2002, the damage has been cumulative. The above chart created by my brother, Todd Thurlow, displays the damaging discharges from Lake Okeechobee and the C-44 basin at S-80 spillway, St Lucie Locks and Dam, for the top 25 discharge calendar years on record, 1953-2019. (http://www.eyeonlakeo.com/DischargeDataandTools/Top25_S-80_DischargeCalendarYears.htm, source: DBHydro: https://www.sfwmd.gov/science-data/dbhydro)

Shockingly, the worst year, 1960, displays 3,093,488 acre feet of water coming through S-80 into the St Lucie River/Indian River Lagoon. For comparison, the highest year in the past decade was 2016 at 857,529 acre feet.  ~A difference of 2, 235,959 acre feet.

We know now that an “acre foot” is an easy calculation, “one foot of water covering one acre of land.” 3,093,488 acre feet of water would have just about covered St Lucie, Martin, Palm Beach, and Broward counties as the acreage of these counties combined adds up to 3,293,440 acres. Hard to believe!

TT3

Even though in 1960, the lake was not yet prone to massive cyanobacteria blooms, fresh water itself is destructive to a brackish estuary, and over three million acre feet discharged into the river by, what would have been at that time, the Central and South Florida Flood Control District, (the predecessor to the South Florida Water Management District), must have wiped out just about everything.

Of course the question is: “Why such high a high number in 1960?” One would deduce, that the primary reason would be because there were three tropical storms and one hurricane that crossed over Florida during this era. According to NOAA’s Tropical Cyclone Rainfall in Florida chart: Judith, October 1959, 7.90 inches; Donna, September 1960 13.24 inches; Florence, September 1960 15.79 inches, and we do not know for the Unnamed 1959 storm.(https://www.wpc.ncep.noaa.gov/tropical/rain/tcflorida.html)

But this is conjecture…

Going back to Todd’s graph, you’ll  notice that thirteen out of the twenty-five years listed had higher discharge number than 2016. Sobering, isn’t it? Staggering numbers, for a river that by Nature was never connected to Lake Okeechobee, and only a portion of the so-called C-44 Basin. We have drowned her, indeed…

Hurricanes 1959, 1960 NOAA, courtesy of Todd Thurlow.

Now for one final question.

The Caloosahatchee has data too, but only for years 1967-2019. Thus the Caloosahatchee’s  highest year for discharge of its top 25 years is 2005, at 3,731,056 acre feet;  followed by 2016, at 2, 950,926 acre feet and so on. Please click on the graph.

So what about the missing thirteen years of 1953-1968? Where did this water go? Did it go to the St Lucie? Was the Caloosahtchee off-line? Did it go through the Calooshahatchee but was not recorded? These are questions I cannot answer. But in any case, both rivers need a break, or they shall break themselves. History allows us to see the long-standing destruction and ecological disregard for our treasured Northern Estuaries.

S-79 Spillway on Caloosahatchee at Franklin Lock and Dam, Top 25 Discharge Calendar Years, 1967-2019, courtesy Todd Thurlow.

Above chart larger format: http://www.eyeonlakeo.com/DischargeDataandTools/Top25_S-79_DischargeCalendarYears.htm

Basin map SFWMD. Before it was connected by canals, the St Lucie River was a large fresh water “stream” that ran into the Indian River Lagoon.

Structures along the Caloosahatchee, courtesy Melody Hunt, Research Gate. The Caloosahtchee was connected to Lake O in the late 1880s by Hamilton Disston after he blew up the waterfall rapids at Lake Hipochee and dredged on to the Lake.

EyeonLakeO, Todd Thurlow: http://eyeonlakeo.com