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Monitoring Algal Production in Akron Water Supply Reserviors in Northeast Ohio Using Satellite Imagery
Razzano, Mandy L.

2011, MS, Kent State University, College of Arts and Sciences / Department of Geology.
Akron Water Supply has been plagued for years with drinking water treatment issues related to nuisance algal growth in their drinking water reservoirs, located in the Upper Cuyahoga Watershed in Northeast Ohio. Chlorophyll a concentrations analyzed by Akron Water Supply Laboratory from Lake Rockwell and Wendell R. LaDue Reservoir were used to investigate the effectiveness of spectral measurements as a predictive tool for estimating algal production. Surface and depth integrated water samples collected by Akron Water Supply were filtered and the spectral reflectance of the water color was analyzed on a LabSpec Pro spectrophotometer. Landsat 5 TM and 7 ETM images of Lake Rockwell and Wendell R. LaDue Reservoir were utilized for this study. Normalized Difference Vegetation Index (NDVI) values were calculated from spectral reflectance captured in the Landsat images and from the spectral reflectance recorded by the LabSpec Pro spectrophotometer on the filtered water samples. NDVI values were calculated from the actual pixel reflectance values within the Landsat images that were identified by the Universal Transverse Mercator (UTM) coordinates of the field collected chlorophyll a samples, and a NDVI interpolation value was calculated from the eight surrounding pixel reflectance values. The NDVI values that were calculated from the spectral reflectance on the filtered water samples did produce strong positive correlations for surface water samples (r2= .94) and depth intergrade samples (r2= .84) with field collected chlorophyll a concentrations. NDVI values from Landsat satellite images proved statistically significant to estimate chlorophyll a concentrations in Lake Rockwell and Wendell R. LaDue Reservoir for a wide range of chlorophyll a concentrations. Moderate negative correlation coefficients were established between Landsat NDVI actual pixel (r2= .48) and Landsat NDVI interpolation (r2=.57) with field collected chlorophyll a concentrations.
Donna L. Witter, PhD (Advisor)
Joseph Ortiz, PhD (Advisor)
Darren Bade, PhD (Advisor)
48 p.

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Razzano, M. (2011). Monitoring Algal Production in Akron Water Supply Reserviors in Northeast Ohio Using Satellite Imagery. (Electronic Thesis or Dissertation). Retrieved from https://etd.ohiolink.edu/

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Razzano, Mandy. "Monitoring Algal Production in Akron Water Supply Reserviors in Northeast Ohio Using Satellite Imagery." Electronic Thesis or Dissertation. Kent State University, 2011. OhioLINK Electronic Theses and Dissertations Center. 20 Jun 2018.

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Razzano, Mandy "Monitoring Algal Production in Akron Water Supply Reserviors in Northeast Ohio Using Satellite Imagery." Electronic Thesis or Dissertation. Kent State University, 2011. https://etd.ohiolink.edu/

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