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New results from Blue Green Algae testing at Lake Texoma
Blue-green algae advisory lifted at Lake Texoma |
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Public Affairs Office | Apr 30, 2012 |
TULSA- Based on recent test results, The U.S. Army Corps of Engineers, Tulsa District has lifted the lake-wide blue-green algae advisory at Lake Texoma.
Samples collected by the Grayson County Health Department on April 16, indicated that blue-green algae cell counts have fallen below the advisory threshold of 20,000 cells per milliliter of water established by the World Health Organization’s guidelines for recreational waters. The data was provided to the Tulsa District by the Grayson County Health Department.
Due to jurisdictional limitations, GCHD was unable to collect samples at Sheppard Annex, Grayson County, Texas; Johnson Creek, Bryan County, Oklahoma; Lakeside public use area, Bryan County, Oklahoma; and Little Glasses Creek, Marshall County, Oklahoma.
However, based on continued water and hydropower releases, recent rainfall and the significant drop in cell counts at the locations tested, the Corps of Engineers has lifted the advisory.
“The drop between March and April at Treasure Island was 20 fold,” said Dr. Tony Clyde, limnologist for the U.S. Army Corps of Engineers, Tulsa District. “I would anticipate that a 10 to 20 fold decrease has occurred in the upper reaches of the Red and Washita River arms based upon the current release schedule, recent rainfall, reservoir elevation, and the subsidence of the bloom in Lebanon Pool and Brier Creek.”
The data breakdown includes: Little Mineral Arm- 3,821 cells/ml Eisenhower State Park Beach- 1,103 cells/ml Treasure Island- 1,211 cells/ml UNT-17/Main Lake Body- 1,313 cells/ml For more information, visit the Tulsa District website at www.swt.usace.army.mil or our Facebook page at www.facebook.com/usacetulsa. |
The Facts; Lake Texoma and Blue Green Algae
What is Blue-Green Algae (BGA)? Blue-Green Algae Cyanobacteria (aka pond scum) is a naturally occurring algae that thrives in waters with little inflow and high temperatures like Lake Texoma experienced in the summer of 2011.
What causes Blue-Green Algae blooms? Blue-green algae are a natural part of a water based eco-system found in almost every aquatic habitat on earth. Although summer heat and calm water do not “cause” blue-green blooms, those additional conditions make an algae bloom far more likely.
Is all Blue-Green Algae dangerous? No, in fact BGA is found in supplements available over the counter at health food stores and pharmacies. When the Corps of Engineers test Lake Texoma, they test for its presence and for the concentration of toxins that are potentially dangerous.
Is it a new problem? No, the reality is that the Corps of Engineers just recently began testing for its presence. 2011 was an unusually hot year with little rain (inflow) which created a perfect 'breeding ground'. With these conditions, the algae may 'bloom' and cell counts become higher and, at times, have a high enough concentration to pose a potential health threat.
What is the Future for Lake Texoma? We expect that this Spring, the higher inflows and cooler temperatures will reduce the conditions that allow for BGA to form. Please remember the lake is not closed and no matter what may happen with BGA, Lake Texoma will always be an amazing playground for boaters, fishermen, sailors and people just wanting to get away!
Are there health concerns from BGA? Depending on the level of toxins, a minor rash could occur if water contact is made. If water is ingested, it could pose a more significant health threat. In extreme cases, it could cause liver damage or failure. The most 'at risk' are those with a lowered immune system, the elderly, and young children. To our knowledge, there has been no reported severe illness or death due to BGA on Lake Texoma.
How is the presence of BGA tested? The Corps of Engineers does monthly testing at eight test sites across Lake Texoma from shallow waters in coves to open waters. Based on their findings, they issue either an advisory or warning. The levels are public knowledge, and anyone at the lake will give you up to date information.
What is the difference between an advisory and a warning? If any of the eight test sites show a count of 20,000 Cells per mL or above, the entire lake is put into an Advisory, which means there is a “relatively low probability of adverse health effects” . If an area shows a count of 100,000 Cells per mL or above, that specific area only is considered a Warning and water contact (i.e. swimming) is prohibited.
How do I judge my risk if I want to get in the water? While there is no hard and fast rule, a general guideline is that, “the worse it looks, the worse the risk is likely to be.” However, the greener the water, the more likely it will be dominated by blue-green algae and the risk goes up.
Is boating and fishing still safe? Boating and Fishing are still safe even when an area is at a Warning Level. The meat of fish is not greatly effected by blue-green algae. You should clean fish thoroughly, discarding entrails and other body parts and rinse the filets with clean water prior to cooking or freezing. It is recommended that you exercise caution to avoid overspray, but there is no reason you shouldn't go to Lake Texoma.
What are the effects on Pets? Your four-legged friend is subject to the same health risks that humans are. You should follow the same precautions with your pet as you do yourself.
Want more information? Contact your favorite marina, store, or US Army Corps of Engineers to learn more about Lake Texoma's current status. For more information contact the Lake Texoma Association at 580-564-2334.
Welcome to Lake Texoma!
The lake holds many surprises for first-time visitors. For example, who would expect a string of islands with sandy beaches? Or bald eagles? The islands are especially popular on summer weekends - they're the place to "see and be seen." Bald eagle watching is a popular autumn activity. Several charter companies offer special tours to view these majestic birds.
Lake Texoma is great for all types of boating from power to sail. There's usually so much activity you can be entertained just watching all the boats on the lake. Personal watercraft, water skiers and wind surfers all consider the lake an excellent place to have fun. The serpentine shape of the lake creates plenty of sheltered coves so it's always possible to find a calm, quiet spot even on the windiest days. You'll find any type of boat available to rent or to buy - from personal watercraft to ski boats to party barges and houseboats.
Of course, mention Lake Texoma to a fishing enthusiast and they'll immediately think "striper!" Texoma is famous for excellent fishing for striped bass and other species. Plenty of professional fishing guides are available to ensure a great experience whether you're a novice or a seasoned angler.
This area is an immense playground - even off the water. Two wildlife refuges, two state parks, fifty-four U.S Army Corps of Engineers - managed parks, twenty-six resorts and hundreds of campgrounds surround the lake. Texoma's newest golf course, Chickasaw Pointe, brings a whole new level of excitement to an area already known for outstanding golf.
If you want to sail, but don't own a boat, there are several charter companies on the lake that can provide a vessel. You'll find selections ranging from 25 to 48 feet in length complete with accommodations for living or just picnicking. All you'll need to pack is your food and gear.
If you've only dreamed of sailing, you can charter a boat with an instructor to see what it's like. If you discover that this is the life for you, the charter companies offer lessons to get you started. Lessons usually consist of three days on the water or two nights in a classroom and one day on the water.