Aquatic Pesticide Freshwater Monitoring Data

2,4-D | Fluridone | Diquat | Glyphosate/Imazapyr

This site provides monitoring data from various lakes and rivers in Washington that were treated with aquatic herbicides under NPDES permit.

 

2,4-D Residue Monitoring

Sacheen Lake, Pend Oreille County (Eurasian Watermilfoil Control)

Diamond Lake, Pend Oreille County (Eurasian Watermilfoil Control)

Newman Lake, Spokane County (Eurasian Watermilfoil Control)

Liberty Lake, Spokane County (Eurasian Watermilfoil Control)

Hideaway Lake, Douglas County (Eurasian Watermilfoil Control)

Steel Lake, King County (Eurasian Watermilfoil Control)

North Lake, King County (Eurasian Watermilfoil Control)

Lake Serene, Snohomish County (Eurasian watermilfoil Control)

Spring Lake, King County (Eurasian Watermilfoil Control)

Lake Washington (Hunts Point), King County (Eurasian Watermilfoil Control)

Columbia River, Wahkiakum County (Eurasian Watermilfoil Control)

 

Dissolved Oxygen Monitoring after 2,4-D Treatment

 

Fluridone Residue Monitoring

The strategy for fluridone treatments differs from other herbicides since the herbicide is deliberately maintained in the water at low concentrations for ten to twelve weeks during the treatment season.

Pipe and Lucerne Lakes, King County - Hydrilla Eradication Project

 

Diquat Residue Monitoring

Big Bow Lake, Douglas County

Battle Ground Lake, Clark County

 

Dissolved Oxygen Monitoring after Diquat Treatment

 

Glyphosate and Imazapyr Residue Monitoring

Spring Lake, King County

North Lake, King County

 

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