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Scientific Investigations Report 2011-5082
Figure 1. The Hood River basin, Oregon.
Figure 2. Reporting limits by year for azinphos-methyl in samples from the Hood River basin, Oregon.
Figure 3. Reporting limits by year for simazine in samples from the Hood River basin, Oregon.
Figure 4. Detected atrazine concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 5. Detected azinphos-methyl concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 6. Detected chlorpyrifos concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards, and toxicity and sublethal endpoints for salmonids and their prey.
Figure 7. Detected diazinon concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 8. Detected malathion concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 9. Detected phosmet concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 10. Detected simazine concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 11. Detected carbaryl concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 12. Detected DEET concentrations in the Hood River basin, Oregon, compared to toxicity and sublethal endpoints for salmonids and their prey.
Figure 13. Detected diuron concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 14. Detected endrin concentrations in the Hood River basin, Oregon, compared to USEPA and Oregon water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 15. Detected fluometuron concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 16. Detected hexazinone concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 17. Detected imidacloprid concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 18. Detected methomyl concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 19. Detected norflurazon concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 20. Detected propiconazole concentrations in the Hood River basin, Oregon, compared to USEPA water-quality standards and toxicity and sublethal endpoints for salmonids and their prey.
Figure 21. Detected propoxur concentrations in the Hood River basin, Oregon, compared to USEPA benchmarks and toxicity and sublethal endpoints for salmonids and their prey.
Figure 22. Detected pyraclostrobin concentrations in the Hood River basin, Oregon, compared to toxicity and sublethal endpoints for salmonids and their prey. LC50, 50 percent lethal concentration; EC50, 50 percent effective concentration.
Figure 23. Azinphos-methyl concentrations in Neal Creek at mouth, 1999–2009.
Figure 24. Chlorpyrifos concentrations in Neal Creek at mouth, 1999–2009.
Figure 25. Simazine concentrations in Neal Creek at mouth, 1999–2009.
Figure 26. Azinphos-methyl concentrations in Lenz Creek at mouth, 2001–2009.
Figure 27. Chlorpyrifos concentrations in Lenz Creek at mouth, 2001–2009.
Figure 28. Phosmet concentrations in Lenz Creek at mouth, 2001–2009.
Figure 29. Simazine concentrations in Lenz Creek at mouth, 2001–2009.
Figure 30. Chlorpyrifos concentrations in the mouth of Hood River, 1999–2009.
Figure 31. Simazine concentrations in the mouth of Hood River, 1999–2009.
Figure 32. Hexazinone concentrations at three Neal Creek, Oregon, sites in 2009.
First posted June 17, 2011
For additional information contact: Director, Oregon Water Science Center U.S. Geological Survey 2130 SW 5th Avenue Portland, Oregon 97201 http://or.water.usgs.gov
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