Minnesota Pollution Control AgencyThese are the streams assessed by MPCA in 2009 for the 2010 reporting cycling to EPA. The streams are a subset and enhancement of the 1:24,000 scale National Hydrography Dataset (NHD). MPCA adds additional streams. Since the assessed streams are a small subset of the NHD streams, only that subset is included in the dataset.The data set was created as part of the Minnesota Pollution Control Agency's Environmental Data Access System, which allows for public access to surface water monitoring data.Filesenv-assessed-streams-2010engPublic2010 Stream Assessments [Minnesota]DatasetsMinnesota2012-03-08Minnesota Geospatial Commons