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Technical Reports

Explore our comprehensive reports that bring together in-depth research findings, detailed data analyses, and thorough environmental assessments to give you a clear understanding of the issues that matter most.

Most Recent Technical Report

Fish Sampling

Lower Mill Creek Partial Bioassessment-Follow up to Sewage Releases of March 2023

Chris O Yoder
10 Min Read

In March 2023, the Mill Creek wastewater treatment plant (WWTP) suffered a complete power loss that resulted in releases of raw and partially treated sewage to the lower reaches of Mill Creek over six (6) days. To evaluate for any long term impacts, MSD tasked MBI with assessing the status of aquatic life and water quality in the lower 5.1 miles of the Mill Creek mainstem between Salway Park and the mouth of the Mill Creek during the seasonal index period of June 15-October 15, 2023.

All Technical Reports

Comprehensive reports detailing our research findings, data analyses, and environmental assessments.

Fish Sampling

May 13th, 2026

Lower Mill Creek Partial Bioassessment-Follow up to Sewage Releases of March 2023

Chris O Yoder
cover photo for Columbus 2024 Final Report

Nov 12th, 2025

Biological and Water Quality Assessment of the Roberts Millikin Ditch, Barbee Ditch, and Dry Run Subwatersheds 2024

Chris O Yoder
collage of water testing

Dec 23rd, 2024

MBI/2023-7-15

Relationships and Thresholds for Continuous Dissolved Oxygen Variables, Nutrient Effects, and Biological Attributes in Northeast Illinois Rivers and Streams

Chris O Yoder
Upper Des Plaines River

Dec 17th, 2024

MBI/2024-3-1

Biological and Water Quality Assessment of the Upper Des Plaines River 2022

Chris O Yoder
Map of Central Ohio

Jun 24th, 2024

Watershed Monitoring and Bioassessment Plan for the Central Ohio Watersheds

Chris O Yoder
scioto river

Mar 14th, 2024

MBI/2023-12-12

Biological and Water Quality Assessment of the Middle Scioto River, Lower Olentangy River, and Lower Olentangy Tributaries 2022

Chris O Yoder
integrated Prioritization System (IPS) for Northeastern Illinois

Aug 7th, 2023

MBI/2020-5-10

Integrated Prioritization System (IPS) for Northeastern Illinois: Technical Documentation and Atlas of Stressor Relationships

Chris O Yoder
scioto river

Oct 12th, 2022

MBI/2022-4-6

Biological and Water Quality Assessment the Middle Scioto River, Lower Olentangy River, and Selected Olentangy Tributaries 2020

Chris O Yoder
North branch of the Chicago river

Jun 21st, 2021

MBI/2020‐8‐12

Biological and Water Quality Assessment of the North Branch Chicago River

Chris O Yoder

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