The MBSS assesses the ecological condition of 1st-4th order streams statewide (1995 - 2017). Biological, physical, and chemical pararmeters are reported as well site catchment data. See http://www.dnr.state.md.us/streams/MBSS.aspThis is a MD iMAP hosted service layer. Find more information athttps://imap.maryland.gov.Feature Service Layer Link:https://geodata.md.gov/imap/rest/services/Hydrology/MD_StreamHealth/FeatureServer/1