| Title |
Persistence and Drift of the Aquatic Herbicide Diquat Following Application at Steilacoom and Gravelly Lakes |
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| Publication number |
Date Published |
| 97-301 | January 1997 |
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| VIEW NOW |
Persistence and Drift of the Aquatic Herbicide Diquat Following Application at Steilacoom and Gravelly Lakes (Number of pages: 41) (Publication Size: 1MB)
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| Author(s) |
Serdar, D. |
| Description |
Diquat concentrations were monitored in the water column of Steilacoom and Gravelly Lakes following treatment with Reward® to control aquatic weeds. In Steilacoom Lake, diquat persisted at all four sampling sites for at least 12 days, with half-lives of 2.1 to 3.4 days. In Gravelly Lake, diquat persisted for 3 to 6 days following treatment. Diquat concentrations ranged from less than 0.5 to 91.2 mg/L in Steilacoom Lake, and from less than 0.5 to 60 mg/L in Gravelly Lake. Diquat was dispersed or drifted to untreated areas of both lakes, including the Steilacoom Lake outlet (Chambers Creek), within 24 hours after treatment.
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| Contact |
EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov |
| Keywords |
drinking water, creek, gravel, lakes, application, water, water quality, lake, herbicide, dissolved oxygen, aquatic |
| WATERSHED |
Water Resource Inventory Area 12 Chambers-Clover |
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