ArcGIS Online for MarylandThis dataset consists of a digital geospatial representation of all identified Tier II segments in the State of Maryland. Based on data collected between 1995-2019, this dataset currently contains information for 263 designated Tier II stream segments. Main segment breakpoints were determined using the 100,000:1 National Hydrography Dataset (NHD). The final designated Tier II segments are the merged sub segments that make up the 24,000:1 NHD meeting the 100,000:1 breakpoints. Tier II stream segments generally terminate at confluences, impoundment outfalls, and tidal boundaries. Map Service Link: https://mdewin64.mde.state.md.us/arcgis/rest/services/MDE_Water_Quality/MD_TierIIHighQualityWaters_2021/MapServer/1ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/eccdcabae2f9466eab9f9cb231661ed1_1engMaryland iMapPublicMaryland Department of the Environment Tier II Stream Segments 2021 [Maryland]Web servicesMaryland2021