AWWA WQTC71530

Recent advances in sensor technology and data telemetry allow a range ofsurface meteorological and vertical water-column data to be collectedsimultaneously, in real time, for lakes and reservoirs. With recent advancementsin computer technology, three-dimensional lake and reservoir models can be runin much shorter time frames, allowing for real-time simulations of hydrodynamicsand water quality. Together, these advances allow for the development of quasi-real-time decision-support systems for water quality management of individuallakes and reservoir systems. Using real-time instrumentation, the models can"learn" from the data and continuously check their predictive capabilities. Real-timemodel simulations will provide necessary information for "data-driven"monitoring schemes designed to examine current physical, chemical, andbiological conditions that impair the water quality of a lake or reservoir, like algalblooms. For example, real-time model simulations and resultant animations ofalgal patch development (functional groups like nitrogen-fixing cyanobacteria oreven species like Microcystis aeruginosa), which may be responsible for tasteand odor or toxin problems in drinking water, will provide up-to-date informationthat can be used by monitoring teams to cost-effectively target data-collection tospecific locations in the lake or reservoir and collect data throughout the growthphase and subsequent crash of the algal population. Until recently, recognition ofan algal bloom in a lake or reservoir did not happen until after the bloom peakedor crashed, and then too late to collect information about the conditions thatpropagated the bloom. Understanding the processes that lead to an algal bloomand water quality impairment will aid in the design of in-lake or landscapeengineering or management solutions to reduce or eliminate future impairments.Example applications of the recent technology (using idealized conditions)include two reservoir systems and one lake: Beaver Lake, an impoundedmountain valley reservoir in the Ozarks of northwestern Arkansas; Lake Houston,an impounded flood-plain reservoir near the Gulf Coast of Texas; and, the southarm of the Great Salt Lake. Includes abstract only.

Product Details

Edition:

Vol. - No.

Published:

11/01/2009

Number of Pages:

1

File Size:

1 file , 720 KB