Fig. 3. Toxicity and Urban Land Use

The percentage of toxic and non-toxic Hyalella azteca samples collected from 2008 to 2017, based on increasing urban land use (< 25% Urban, <50% Urban, <75% Urban, <100% Urban). The land use category is based on percent urban land use at 5km. As in, how much of the area within 5km of a sampling site is classified as urban. This dataset was created for the 2019 Water Quality Status Report. It was compiled using data from the Stream Pollution Trends (SPoT) Monitoring Program, part of the Surface Water Ambient Monitoring Program at the State Water Resources Control Board.