Dave White Municipal Golf Course

Golfers prepare to tee off on hole No. 3 at Dave White Golf Course.

CASA GRANDE — The city has taken water samples from a pond at Dave White Municipal Golf Course after numerous fish were found dead.

“Staff is aware of the issue and are in the process of cleaning the dead fish out of the water,” Community Services Director Steve Hardesty said in a statement. “To confirm this wasn’t caused by any chemicals, staff has sent off water samples to test but have not received the results back at this point.”

According to the statement, the city is confident that the fish kill is related to recent warm weather and something called “pond turnover.”

“This rapid fluctuation of the water temperatures, combined with the shallow water in the pond, can unknowingly lead to oxygen depletion and other changed chemistry,” Hardesty said.

According to the statement, the most common cause of fish kills is suffocation due to the lack of dissolved oxygen in the water.

“In addition, these ponds are made up of effluent water, which is not recommended for many freshwater fish,” Hardesty said. “For this reason, the city does not stock these ponds with fish.”

According to the statement, the oxygen-depleted water should not harm any other wildlife such as ducks, geese and turtles.

“The city uses these ponds for irrigation on the golf course,” Hardesty said. “We empty and refill these ponds on a regular basis with this effluent water from the city’s wastewater facility.”

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Gabrielle Olivera is the Casa Grande reporter at PinalCentral, covering government, schools, business and more.

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