Final Design

Please enjoy the maps and figures our group has created

Above Picture: Figure 1 A map of Lake Anna with major water features shown. Colored lines delineate sub-watersheds, and light blue lines indicate tributaries. Our project focuses on the northern half of the lake, as this is considered the problem area.

Above Content: ANIMATION 1 This animation depicts how Total Phosphorous (TP) concentrations have changed over time within Lake Anna. TP data obtained from Lake Anna Civic Association (LACA). *Note: Data set is limited by when samples were taken - no data point does not mean a value of 0*

Above Picture: Figure 4 A static image showing Total Nitrogen (TN) concentrations as concentric rings in the upper lake. Like TP, concentrations are higher near the inlets, however, concentrations do not drop as sharply downstream.

Above Content: Animation 2 This animation is depicts how HAB cell counts have changed over time within Lake Anna. HAB data obtained from Virginia Department of Health. *Note: Data set is limited by when samples were taken - no data point does not mean a value of 0. Quantified HAB information before 2018 is scarce, and was not included*

Above Picture: Figure 4 A static image showing all of the HAB samples taken by VDH over the 2018 and 2019 season. The upper North Anna River saw the most intense bloom events, though swimming advisories were issued throughout the lake.

Above Picture: Figure 5 An image showing the results from the Chesapeake Bay Program Watershed Model for Estimated 2016 Nitrogen Loading. Estimations made using land use. Darker reds correlate to larger loads. While loadings changed year to year, the yearly variability was not significant when comparing sub watersheds to each other, so the most recent data (2016) was used.

Above Picture: Figure 6 An image showing the results from the Chesapeake Bay Program Watershed Model for Estimated 2016 Phosphorous Loading. Estimations made using land use. Darker reds correlate to larger loads. While loadings changed year to year, the yearly variability was not significant when comparing sub watersheds to each other, so the most recent data (2016) was used.

Above Picture: Figure 7 Land cover changes in the Lake Anna watershed from 2001-2016 based on NLCD Raster Datasets

Above Content: Figure 8 conceptual workflow for HAB IAM Process. Detailed workflow can be found in the 'Final Report' in the 'Documents' page (*Note: as of 5/3/20 Final Report is not complete, will be uploaded soon)