Willamette Basin Total Maximum Daily Loads (TMDLs) -
Reports on Willamette River Basin Water Quality

• USGS-DEQ Cooperative Reports
• Reports prepared for DEQ by Tetra Tech 1992-1995
  • Tetra Tech. 1992 Willamette River Basin Water Quality Study. Component 8: Literature Review and Summary of NonPoint Source Pollution in the Willamette River Basin. Final Report TC 8983-08
  • Tetra Tech. 1992 Willamette River Basin Water Quality Study. Component 9: Characterization of Willamette River Main-Stream Ecoregions. Final Report TC 8983-09
  • Tetra Tech. 1992 Willamette River Basin Water Quality Study. Component 2: Review and Summary of Toxic Pollutants in the Willamette River and Major Tributaries. Final Outline TC 8983-02
  • Tetra Tech. 1992 Willamette River Basin Water Quality Study. Component 3: Data Review and Summary for Dissolved Oxygen Modeling on the Willamette River. Final Report TC 8983-03
  • Tetra Tech. 1992 Willamette River Basin Water Quality Study. Field Sampling Plan Water Quality Model Calibration and Ecological Assessment. Final Report TC 8983-11
  • Tetra Tech. 1992. (b.10/30/97) Willamette River Basin Water Quality Study. Component 11: Water Quality Survey Data. Final Report TC 8983-11
  • Tetra Tech. 1992 Willamette River Basin Water Quality Study. Water Quality Model Selection Recommendation. Final Report TC 8983
  • Tetra Tech. 1992. (b.10/30/97) Willamette River Basin Water Quality Study. Component 7: Point Source Discharges and Waste Loading to the Willamette River Basin During 1991. Final Report TC 8983-07
  • Tetra Tech. 1992. Willamette River Basin Water Quality Study. Component 4: Review and Summer of Nutrient and Phytoplankton Growth Data for the Willamette River. Final Report TC 8983-04
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Component 2: Toxic Chemical Model Application Report. Final Report TC 8983-02
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Component 2: Toxic Chemical Monitoring Recommendations Report. Final Report TC 8983-02. Portland, OR
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Willamette River Bacteria Component Report. Final Report TC 8983-05
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Willamette River Basin Biological Responses to Stressors Component Report. Final Report TC 8983-06
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Willamette River Ecological Systems Investigation Component Report. Final Report TC 8983-09
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Summary Report. Final Report TC 8983-10
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Component 2: Willamette River Basin Toxics Component Report. Final Report TC 8983-02
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Willamette River Dissolved Oxygen Modeling Component Report. Volume 1: Final Report TC 8983-03
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Willamette River Dissolved Oxygen Modeling Component Report. Volume 2: Appendices A,B, &C. Final Report TC 8983-03
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Willamette River Nutrient and Phytoplankton Growth Modeling Component Report. Volume 1 & 2. Final Report TC 8983-04
  • Tetra Tech. 1993. Willamette River Basin Water Quality Study. Willamette River Basin Nonpoint Source Pollution Component Report. Final Report TC 8983-08
  • Tetra Tech. 1994 Willamette River Basin Water Quality Study. Phase II Biological Sampling Data Report. Final Report TC 9719-02
  • Tetra Tech. 1994 Willamette River Basin Water Quality Study. Phase II Nonpoint Source Sampling and Analysis Plan Report. Final Report TC 9925-02
  • Tetra Tech. 1994 Willamette River Basin Water Quality Study. Phase II Land Use Characterization for the Pudding River Sub-Basin and Selected Watersheds. Final Report TC 9925-02
  • Tetra Tech. 1994 Willamette River Basin Water Quality Study. Phase II Ecological Monitoring Component: Benthic Metric Election and Data Evaluation. Final Report TC 9925-03
  • Tetra Tech. 1994 Willamette River Basin Water Quality Study. Phase II Ecological Monitoring Component: Field Sampling Plan. Final Report TC 9925-03
  • Tetra Tech. 1995 Willamette River Basin Water Quality Study. Summary of Recent Scientific Reports on the Willamette River. TC 9925-04
  • Tetra Tech. 1995 Willamette River Basin Water Quality Study. Phase II Steady-state Model Refinement Component: QUAL2E-UNCAS Dissolved Oxygen Model Calibration and Verification. Volume 1: Final Report No. 0305
  • Tetra Tech. 1995 Willamette River Basin Water Quality Study. Phase II Steadystate Model Refinement Component: QUAL2E-UNCAS Dissolved Oxygen Model Calibration and Verification. Volume 2: Appendix No. 0305
  • Tetra Tech. 1995 Willamette River Basin Water Quality Study. Phase II Ecological Monitoring Component: Habitat Assessment Report. Final Report TC 9925-03
  • Tetra Tech. 1995 Willamette River Basin Water Quality Study. Phase II Ecological Monitoring Component: Assessment of Aquatic Communities and Biological Indices. Final Report TC 9925-03
  • Tetra Tech. 1995 Willamette River Basin Water Quality Study. Phase II Non-Point Source Pollution in the Pudding River Sub-Basin of the Willamette River. Final Report TC 9925-02
  • Tetra Tech. 1995. Willamette River Basin Water Quality Study. Summary and Synthesis of Study Findings. Final Report TC 9925-04