GEOG 487
Environmental Challenges in Spatial Data Science

Advanced Activity


Advanced Activity

Advanced Activities are designed to make you apply the skills you learned in this lesson to solve an environmental problem and explore additional resources related to lesson topics.


The regulations for sludge disposal sites were revised to help prevent land use change in the watershed. The new regulations require that sludge disposal can only occur on land that is currently used for agriculture. This will prevent areas such as forests and wetlands from being used as disposal sites.

Find suitable sites in the Lake Raystown Watershed that meet all of the following criteria:

  • DRASTIC value less than 150;
  • at least 300 meters from streams;
  • agricultural land use (hint - use the "landgrid" raster layer);
  • contiguous area of 0.5 sq km or greater.