Department of
Environmental Quality

Subbasin Assessments and Total Maximum Daily Loads

Listed below are subbasins in which subbasin assessments (SBAs) and/or total maximum daily loads (TMDLs) have been completed for water bodies in DEQ's Pocatello Region. Click on the subbasin name to link to an overview of water quality in the subbasin, a list of streams and pollutants for which TMDLs were developed, and related documents, including subbasin assessments and TMDLs, addenda, implementation plans, and five-year reviews. (Access the statewide list of SBAs/TMDLs here.)

• American Falls Subbasin
• Bear River Basin/Malad River Subbasin
• Blackfoot River Subbasin
• Portneuf River Subbasin

Ground Water Studies and Reports

• Bannock County: An Objective GIS Screening Tool for Rating the Suitability of Land for Septic-based Development (August 2012)
• Sources of Nitrate Contamination in Ground Water of Pleasant Valley, Power County, Idaho (May 2008)
• Evaluation of Water Quality Impacts Associated with FMC and Simplot Phosphate Ore Processing Facilities, Pocatello, Idaho (Technical Report 21. January 2004)
• Economic Impacts of Enhanced Aquifer Protection for the Lower Portneuf River Valley Aquifer: Final Report (September 2001)
• The Business Community Perspective on Enhanced Protection for the Lower Portneuf Valley Aquifer (February 2002)
• Ground Water Vulnerability Assessment, Snake River Plain, Southern Idaho (Technical Report 2. April 1991)

Surface Water Studies and Reports

• Blackfoot River and Tributaries and Selected Bear River Tributaries: Selenium Project, Southeast Idaho Phosphate Mining Resource Area Water Quality Sampling for Metals - 2005 | Appendix A (December 2005)
• Blackfoot River and Tributaries, Selected Bear River Tributaries, and Selected Salt River Tributaries: Selenium Project, Southeast Idaho Phosphate Mining Resource Area Water Quality Sampling for Metals - 2006 (December 2006)
• Blackfoot River and Tributaries, Selected Bear River Tributaries, and Selected Salt River Tributaries: Selenium Project, Southeast Idaho Phosphate Mining Resource Area Water Quality Sampling for Metals - 2007 (December 2007)