Golden Alga in Texas

Impacts of Blooms

When a Golden Alga bloom occurs in Texas, the public wants to know how they will be affected. Although the Texas State Health Services Department has stated there are no dangers to human health from the toxins that produce these fish kills, there are effects on the environment and economy of the area.

Environmental Impacts

Economic Impacts

The greatest economic impact is to communities or businesses that depend on visitors to an affected waterbody. During the fish kill, people may avoid the lake due to the dead fish. The fishing may is not be as good as before in certain areas, and anglers may go to other lakes. Even after the algal bloom is over, people may still avoid the lake. Many people come from out of state to enjoy the Texas lakes. This avoidance can cause a loss in revenue for fishing guides, vacation camp operators, parks, hotels, motels, restaurants, clothing stores, gas stations, and more. If the revenue to these businesses is down, the businesses may spend less money and be able to hire fewer people. This can affect the local, city, and county economy. Reduced sales taxes collected by these businesses may impact the state’s economy. This can affect the entire state.

Estimating the Economic Impacts of Golden Algae (Prymnesium parvum) on Recreational Fishing at Possum Kingdom Lake media download(PDF 328 KB)

top of page

Aditional Information:

Would you like to know more?
The Biology of Golden Alga summarizes what we know about the alga and its toxins.

Where does golden alga fit compared to other single-celled organisms?
The Golden Alga Family Tree gives examples of and information about golden alga and other protists.

What does golden alga look like?
TPWD Golden Alga Images has photos of fish kills, golden algal cells, and short videos of live golden alga. These images may be used for noncommercial/educational purposes as long as TPWD is given credit and other site policies are followed.

Golden Alga Information Card: TPWD has collaborated with the Texas Commission on Environmental Quality and other entities to produce a golden alga information card. Download a PDF from the TCEQ website or request a free hard copy from TPWD at

Back to Top
Back to Top