Data Sources

Molalla-specific Studies

  1. The ODEQ Updated Source Water Assessments: Canby, Molalla, and Colton –, and
  2. Molalla-Pudding-French Prairie-North Santiam Agricultural Water Quality Management Area Plan (2016), Biennial review (2016) and Administrative rules (2002) –
  3. DEQ Water Quality Status and Trends report for the Molalla-Pudding French Prairie North Santiam AgWQ Management Area –
  4. Molalla-Pudding Subbasin TMDL –
  5. USGS – Geomorphic Setting, Aquatic Habitat and Water Quality Conditions of the Molalla River 2009-10. Carpenter, K. et al. –
  6. Lower Molalla River and Milk Creek Watershed Assessment, ABR, Inc. for Molalla River Watch, 2004 –
  7. Middle and Lower Molalla River Restoration Action Plan, Cascade Environmental Group, LLC, 2011 –
  8. Susan Amelia Wherry, Climate Change Effects and Water Vulnerability in the Molalla Pudding River Basin, Oregon, USA, 2012 –
  9. White Paper: The Ecological and Recreational Benefits of the Molalla River, American Rivers & Native Fish Society 2009 –

SWP Planning

  1. ODEQ Source Water Protection Plan link –
  2. The general planning process for development of an area-wide plan is documented in the National Planning Procedures Handbook (NPPH), Subpart F – Area-wide Conservation Planning –
  3. American Water Works Association/ANSI G300 standard for source water protection –
  4. National Management Measures to Control Nonpoint Source Pollution from Agriculture, 2003 –

Willamette Basin Studies

  1. Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and their Relation to Land Use, in the Willamette River Basin, Oregon, 1997 –
  2. Simulation of Groundwater Flow and the Interaction of Groundwater and Surface Water in the Willamette Basin and Central Willamette Subbasin, Oregon, 2014 –
  3. Eugene Water and Electric Board: Nonpoint Source Pollution Assessment and Evaluation Results for the McKenzie River Watershed, Oregon, 2006
  4. Reconnaissance of Land-Use Sources of Pesticides in Drinking Water, McKenzie River, Oregon, 2012 –
  5. Ground-water hydrology of the Willamette basin, Oregon, 2005 –
  6. Estimates of ground-water recharge, base flow, and stream reach gains and losses in the Willamette River basin, Oregon, 2002 –
  7. Environmental Setting of the Willamette Basin, Oregon, 1999 –
  8. Water quality in the Willamette Basin, Oregon, 1991-95 –
  9. Geologic framework of the Willamette Lowland aquifer system, Oregon and Washington, 1998 –
  10. Hydrogeologic framework of the Willamette Lowland aquifer system, Oregon and Washington, 1998 –
  11. Seasonal and spatial variability of nutrients and pesticides in streams of the Willamette Basin, Oregon, 1993-95, 1998 –
  12. Willamette Basin, Oregon; nitrogen in streams and ground water, 1980-90 –

Clackamas Drinking Water Studies

  1. Clackamas Watershed Resilience: Phase I Report. (Climate Change Study). Report prepared by PSU for Clackamas River Water Providers, 2018 –
  2. The Clackamas River Water Providers Drinking Water Protection Plan for the Clackamas River, 2010 –
  3. Clackamas River Basin Pollutant Load Modeling Tool. Prepared for Clackamas River Water Providers by Geosyntec, 2014 –
  4. Herrera Environmental Consultants, Inc. Clackamas River Drinking Water Risk Analysis Final Memos, 2012 –
    • Executive Summary
    • Septic Systems Analysis
    • Agricultural Analysis
    • Forestry Analysis
    • Urban Development Analysis
    • Vulnerable Soils Analysis
    • Point Source Pollution Analysis
    • Watershed Emergency Response System
    • Hazardous Material Spill Analysis
    • Updated GIS Hazardous Materials Spill Risk Analyses Results and Recommendations
  5. Seepage Investigations of the Clackamas River, Oregon, 2011 –
  6. Pesticide Occurrence and Distribution in the Lower Clackamas River Basin, Oregon, 2000-2005 –
  7. USGS Pesticides in the Lower Clackamas River Basin, Oregon, 2000-01 –
  8. Organic Compounds in Clackamas River Water Used for Public Supply near Portland, Oregon, 2003–05 –
  9. Water-quality and algal conditions in the Clackamas River basin, Oregon, and their relations to land and water management, 2003 –
  10. Sources and Characteristics of Organic Matter in the Clackamas River, Oregon, Related to the Formation of Disinfection By-Products in Treated Drinking Water, 2103 –

Other Regional Studies

  1. Application of the SPARROW Model to Assess Surface-Water Nutrient Conditions and Sources in the United States Pacific Northwest, 2013 –
  2. Phosphorus and Groundwater: Establishing Links Between Agricultural Use and Transport to Streams, 2012 –
  3. Discrete and Continuous Water-Quality Data and Hydrologic Parameters from Seven Agricultural Watersheds in the United States, 2002–09, 2011 –
  4. Statistical Comparisons of Watershed-Scale Response to Climate Change in Selected Basins across the United States, 2011 –
  5. Water Supply, Demand, and Quality Indicators for Assessing the Spatial Distribution of Water Resource Vulnerability in the Columbia River Basin, 2013 –
  6. Surface-water nutrient conditions and sources in the United States Pacific Northwest, 2011 –
  7. Trends in pesticide concentrations in streams of the western United States, 1993-2005, 2011 –

Additional Information Sources

If you are aware of additional information sources not included above, please share that resource with the project team!

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