Category Archives: drawdown

Dam lower to fight aquatic weed

Meridian Energy, which uses the lake to generate electricity at the Benmore Power Station, began lowering the lake on Monday to allow Land Information New Zealand (Linz) to carry out a spraying programme to control lagarosiphon. READ MORE
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The salvinia struggle

Currently, 4,000 acres of Lake Bistineau are covered by salvinia; three weeks ago, the fern covered just 1,500 acres. While a tough plant, the fern needs water to survive, leading Louisiana Wildlife & Fisheries to believe a drawdown on Lake Bistineau could be a possible treatment for the salvinia. READ MORE
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Drawdown planned at northwestern Louisiana’s Lake Bistineau to fight invasive weed

SHREVEPORT, Louisiana — The Louisiana Department of Wildlife and Fisheries plans a drawdown on northwestern Louisiana’s Lake Bistineau, hoping to stop the spread of giant salvinia, an invasive aquatic weed. Control gates will be used to lower the level by about 4 to 6 inches per day. The lowering will not exceed 7 feet below normal pool stage.
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Savannah River to be lowered 3 feet for June 19 herbicide spraying

The Savannah River will be lowered about three feet later this month to accommodate contractors who will apply herbicide to control aquatic weeds on June 19. The project, costing about $6,500, involves treatment of about 15 acres of invasive weeds in the river channel along downtown Augusta, said Wayne Hawkins, the chairman of the Augusta Port Authority.

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Drawdown set for Black Bayou

Outdoor enthusiasts and property owners have endured severe problems with aquatic vegetation on Black Bayou for several years. Hydrilla remains the greatest concern, at times covering up to 90 percent of the lake.

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