In these lessons, you'll perform a viewshed analysis to determine the visual impact of a wind farm with four large turbines in a study area in England. A viewshed is the area visible from a specific vantage point. Viewshed analysis shows areas where observers can see an object or objects, or conversely, areas that can be seen from those objects. Although a complete wind farm analysis would examine other factors as well, these lessons focus on the visual impact assessment portion of the analysis. You'll assess the visual impacts of building the wind farm by generating maps of zones of theoretical visibility under various assumptions.
These lessons draw on an actual proposal to develop the Swift Wind Farm in the English Midlands to show how a GIS can be used to perform a viewshed analysis.
|Explore the study area||Explore the area around the proposed wind farm, including nearby wind farms and local landmarks.||20 minutes|
|Perform a viewshed analysis||Identify areas from which the proposed wind turbines would be visible.||10 minutes|
|Explore the results||Examine and interpret the results of the analysis.||10 minutes|
|Share your map with others||Share your web map in a variety of ways.||10 minutes|