Trash Data from CEDEN kindly provided by Jarma Bennett This is one of the largest collections of trash observations in the world with over 100k data points. These data are primarily from rivers in California. These data are qualitative (high, medium, low; present) assessments of trash currently, but CEDEN is working on making their data more quantitative. There are also qualitative comments on the types of trash that the surveyors found during their assessment. There are notes about dumping/fly-tip locations and overall quality assessments of litter in the region. Methodologies are standardized and metadata are thoroughly described for each data point added to CEDEN. Other stream quality data can be queried that collocates with the trash observations. Note that this file has a second tab containing descriptions of the codes used. The CEDEN results were broken up into two files due to size. More information about CEDEN and the data and methodology can be found here: http://www.ceden.org/