TPWD Monitors Golden Alga in Texas Lakes and Rivers


TPWD Monitors Golden Alga in Texas Lakes and Rivers

The Inland Fisheries Division of Texas Parks & Wildlife Department (TPWD) has been monitoring a noticeable lack of golden alga (Prymnesium parvum) in Texas rivers and lakes during recent months. The naturally-occurring alga is toxic to fish but is not known to affect other wildlife or people.

It was originally noted in the Pecos River in 1985, but has caused significant fish kills in the Brazos, Canadian, Colorado, and Red River basins as well. Algal blooms in 2003, including several large ones in fall and winter, killed an estimated 8,297,933 fish in the Brazos River system and an estimated 5,131,355 fish in the Colorado River basin.

But over this past winter, water samples have shown almost no golden alga. Department experts are hesitant to make any firm statements, but believe it is possible that heavier rains in 2007 produced flushes of freshwater in lakes and rivers that have inhibited algal blooms. Research by TPWD, universities and other partners is underway to better understand the organism.

One thought on “TPWD Monitors Golden Alga in Texas Lakes and Rivers

  1. Jesse Niemeyer

    At Lake Waco ,Belton and WHitney some regulations besides numbers of hooks per person needs to be addressed on jug lines. Groups of fishermen in a single boat are setting hundreds of lines in areas and creating boating and sking hazards. I have witnessed areas 300 yards by 500 yards where jugs are 20 feet apart in the whole area.

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