Case Study | September 16, 2013

Enhancing Lake Thunderbird Through Hypolimnetic Oxygenation

Source: BlueInGreen
Constructed in 1965 by the Bureau of Reclamation, Lake Thunderbird is a 6,070-acre raw water supply with a volumetric capacity of approximately 119,600-acre-feet. Lake Thunderbird is the drinking water supply for Del City, Midwest City and Norman, Oklahoma; a total population over 190,000. The reservoir is operated and governed by the Central Oklahoma Masters Conservancy District (COMCD).
During the summer of 2009 American Recovery and Reinvestment Act (ARRA) stimulus funds for ecological/environmental projects became available. At this time, the COMCD, the Oklahoma Water Resources Board (OWRB), Tetra Tech, Inc. consulting/engineering partnered to design, install, and monitor a hypolimnetic oxygenation system. There are several factors that led to the decision for a hypolimnetic oxygenation system – including, but not limited to, Lake Thunderbird is currently listed as Category 5 (303d list) in the Oklahoma 2008 Integrated Report as impaired due to turbidity, low dissolved oxygen (DO) and color; the reservoir is listed as a Sensitive Water Supply (SWS) within Oklahoma Water Quality Standards; and, the reservoir fails to meet the 10-μg/L Chlorophyll-a requirement of SWS reservoirs.
After evaluating several alternatives, the group selected BlueInGreen as the chosen technology partner. Specifically, the SDOX technology was the chosen because of its energy
efficiency and ability to leave the thermal stratification intact. In 2010, the SDOX was procured, manufactured and installed.


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