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By linking Maryland stream use classifications with the NHDPlusV2 through the permanent identifier code, the information contained in this dataset can be analyzed using software tools ranging from spreadsheets to geographic information systems (GIS) to aid in regulatory decision making. Basing the Maryland use class dataset upon a national stream dataset like the NHDPlusV2 facilitates the sharing of geospatial information with other organizations that can be integrated into many different types of applications.This feature class provides the use class (UC) designation as determined by MDE, the regulatory agency responsible for assigning UCs, and is derived directly from the State of Maryland's stream segment designations as described in the Code of Maryland Regulations (COMAR) 26.08.02.08. Specific UCs identified within this feature class include Use I, Water Contact Recreation, and Protection of Nontidal Warmwater Aquatic Life; Use II, Support of Estuarine and Marine Aquatic Life and Shellfish Harvesting; Use III, Nontidal Cold Water; Use IV, Recreational Trout Waters, and all Public Water Supply uses (I-P, III-P, IV-P). 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