Case Study

Reservoir Overcomes Toxic Algae Issue

Source: Lonza
cranberry.reg

A Nebraska reservoir was experiencing toxic algae in its water. Constructed by the U.S. Army Corps of Engineers (COE) primarily as a flood control reservoir with recreation and irrigation as secondary uses, the reservoir has a surface area of 700+ acres with an average depth of almost 12 feet.

A laboratory study (Algal Challenge Test) was performed with the desired outcome of controlling Microcystis aeruginosa and microcystin production to permit recreational access. The study was to measure the responses (chlorophyll-a concentration, cell density, and microcystin production) of M. aeruginosa from the reservoir to selected algaecide exposures in the laboratory.

Further responses (chlorophyll-a concentration, cell density, and microcystin production) of M. aeruginosa from the reservoir to an algaecide exposure in the field were measured.

Learn how the use of the water was restored once a compare and contrast of the laboratory and field results was completed.

Image credit: "Cranberry Lake algae bloom 2014," EcologyWA © 2014, used under an Attribution ­ShareAlike 2.0 Generic license: https://creativecommons.org/licenses/by­sa/2.0/