Heavy metals, such as lead, are associated with some industrial activities. The maps shown to the right display the results of this analysis, the upper map is for zinc and the lower map is for lead.
Blue areas indicate land uses for which there was insufficient data to conduct the analysis.
Green areas indicate land uses that are not sources for metals pollution. This includes undeveloped and natural areas. The red to deep red land uses offer the greatest risk of high metals concentrations in runoff from the area. Please click on the map for a larger view. Zinc The maps at left show wetlands and the relative risk to each for receiving metals pollution.