Louisville District Water Quality & Biological Data Collection

MAD Scientist Associates was selected by the United State Army Corps of Engineers (USACE) to collect biotic, physical, and chemical data for streams flowing into two public reservoirs, CJ Brown and Caesar Creek, covering 13 sites from July-October. Mark Dilley and Jenna Odegard headed field teams that collected fish, invertebrate, water chemistry data, as well as physical stream measurements. Data collected from these sites were used to evaluate health of the streams surrounding the reservoirs.

Fish populations were sampled by electrofishing, while invertebrates were collected using Hester-Dendy samplers and dip nets. The fish and invertebrate data was then evaluated using the Index of Biotic Integrity (IBI) and Invertebrate Community Index (ICI), respectively. Stream habitat was assessed using the Qualitative Habitat Evaluation Index (QHEI), which assigns rating scores for desirable habitat characteristics. In-situ water quality data was collected using a YSI meter. These reservoirs in the Springfield and Cincinnati area are very important for flood protection, recreation, and the wide variety of species they support. This data will be applied toward watershed management, enhancement, and protection.

See the USACE write up in this month’s Fall City Engineer publication.

Mark is renewed for Level 3 Qualified Collector Status with Ohio EPA

MAD Scientist Associates is pleased to announce that Mark has successfully completed the renewal process to maintain his Level 3 Qualified Data Collector status with the Ohio EPA for fish studies and Qualitative Habitat Evaluation Index(QHEI) assessments.  In the fall of 2016, Mark and staff members Aaron Laver and Jacob Zink sampled a reach on the Olentangy River and two reaches on adjacent tributaries.  This sampling effort was performed in collaboration with the Friends of the Lower Olentangy Watershed (FLOW), and Joe Bevan, FLOW volunteer extraordinaire, assisted with a significant portion of the field work (thanks, Joe!) 

The waterways assessed in the study were sampled using an electrofisher unit that temporarily stuns fish for ease of capture.  An Index of Biotic Integrity (IBI) and QHEI score was then calculated for each site (as well as a Modified Index of Well-being, MIWb, for the mainstem Olentangy).  A summary of his findings and a link to the report can be found on FLOW’s website.  The current list of Ohio EPA QDCs is available HERE.  Mark’s certification will be valid through February 2020.  Staff member Mary Skapof is a Level 2 QDC for invertebrate studies, as well.  If you need credible fish, invertebrate or QHEI data for your next project, we would welcome the opportunity to assist you!