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This tile service is derived from a digital raster graphic of the historical 15-minute USGS topographic quadrangle maps of coastal towns in Massachusetts. These quadrangles were mosaicked together to create a single data layer of the coast of Massachusetts and a large portion of the southeastern area of the state.The Massachusetts Office of Coastal Zone Management (CZM) obtained the map images from the Harvard Map Collection. The maps were produced in the late 1890s and early 20th century at a scale of 1:62,500 or 1:63,360 and are commonly known as 15-minute quadrangle maps because each map covers a four-sided area of 15 minutes of latitude and 15 minutes of longitude.

This layer is a digital raster graphic of the historical 15-minute USGS topographic quadrangle maps of coastal towns in Massachusetts. These quadrangles were mosaicked together to create a single data layer of the coast of Massachusetts and a large portion of the southeastern area of the state. The Massachusetts Office of Coastal Zone Management (CZM) obtained the map images from the Harvard Map Collection. The maps were produced in the late 1890s and early 20th century at a scale of 1:62,500 or 1:63,360 and are commonly known as 15-minute quadrangle maps because each map covers a four-sided area of 15 minutes of latitude and 15 minutes of longitude. A digital raster graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) standard series topographic map. In ArcSDE the image is named IMG_USGS_HIST_COASTAL.

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This tile service is derived from a digital raster graphic of the historical 15-minute USGS topographic quadrangle maps of coastal towns in Massachusetts. These quadrangles were mosaicked together to create a single data layer of the coast of Massachusetts and a large portion of the southeastern area of the state.The Massachusetts Office of Coastal Zone Management (CZM) obtained the map images from the Harvard Map Collection. The maps were produced in the late 1890s and early 20th century at a scale of 1:62,500 or 1:63,360 and are commonly known as 15-minute quadrangle maps because each map covers a four-sided area of 15 minutes of latitude and 15 minutes of longitude.

I. SNEP HRU Project Background

The Southeast New England Program (SNEP) region consists of watersheds in Massachusetts and Rhode Island that primarily drain into Narragansett Bay, Buzzards Bay, or Nantucket Sound. It encompasses all or portions of 134 municipalities many of which are highly developed. The region faces multiple water quality issues with stormwater being previously identified a major contributor.

These maps have been generated for all 134 Municipalities including 81 subwatersheds in the SNEP region to provide organizations and municipalities a way to understand where significant stormwater pollution may be originating. For organizations or municipalities with GIS capabilities the data that created these maps is available as well.

II. What are HRUs?

Hydrologic Response Units (HRUs) describe a landscape through unique combinations of land use and land cover (residential, commercial, forest, etc.), soil types (A, B, C, D), and additional characteristics such as slope, and impervious cover. These landscape characteristics, or HRUs, provide the building block to quantify stormwater pollutant loads (nitrogen, phosphorus, and total suspended solids (TSS)) originating from a given land area. The HRUs and nutrient pollutant loads in stormwater provides a baseline from which reduction targets can be created.

III. How can HRUs be used?

These maps and their underlying data can provide critical information to municipalities, watershed organizations, EPA, and others to assess stormwater pollutant loads in SNEP watersheds. EPA expects that this information will facilitate further understanding of the distribution of stormwater pollutant load source areas throughout the watersheds. This information serves to advance a broader understanding of stormwater impacts and potential management options by the public and direct stakeholders.

Consistent HRUs may help municipalities implement MS4 permitting requirements and facilitate stormwater management strategies, such as land use conversion, stormwater Control Measure (SCM) siting, and targeting areas for conservation. HRU mapping can identify best locations for SCMs and can be utilized with additional stormwater planning tools (such as EPA’s Opti-Tool) to develop a cost-effective stormwater management plan. By providing a consistent HRU map for the SNEP region, practitioners can focus their efforts on implementation of SCM strategies rather than mapping their landscape.

Hotspot mapping is a tool that integrates the HRU analysis and stormwater runoff pollutant load outputs to indicate areas where pollutant loads are highest and areas that stormwater controls may be best implemented. The HRUs and pollutant loads can be overlayed with parcel analysis to determine which parcels have high loads/areas of large impervious cover. The parcel data can help towns prioritize their efforts by determining the properties with highest potential to reduce pollutant loads through stormwater controls. Similarly, it can help determine which properties have large stormwater pollutant loads.

IV. Other Resources

· HRUs That have been completed by EPA (Taunton River Watershed FDC Project and Tisbury, MA IC Disconnection Project).

· The Cape Cod Commission developed HRUs for Barnstable County (CCC: Barnstable County HRUs).

· The UNH Stormwater Center developed parcel level hotspot mapping in New Hampshire for municipalities to prioritize where new BMPs should be placed (UNHSC: NH Hotspot Mapping).

The following dashboards provide data on contagious respiratory viruses, including acute respiratory diseases, COVID-19, influenza (flu), and respiratory syncytial virus (RSV) in Massachusetts. The data presented here can help track trends in respiratory disease and vaccination activity across Massachusetts.

The Bayreuth sheet cuts into: the Bohemian massif with the Fichtel Mountains and the Upper Palatinate Forest, the Thuringian-Saxon and north-eastern Bavarian basement mountains and the southern German strata. Variscan folded rocks of the Precambrian to Lower Carboniferous are exposed in the southwest-northeast trending saddle and trough structures (Thuringian Synclinorian, Berga Anticlinorian & Vogtland Synclinorian) of the Thuringian-Saxon and Northeast Bavarian basement. The embedded complex of the Münchberger Gneissmasse represents a special feature: with its metamorphic rocks and its anchimetamorphic environment of Paleozoic layers in the Bavarian facies, it is both facies and tectonically in contrast to the surrounding Paleozoic in the Thuringian facies. In the center of the map sheet is the Fichtelgebirge with its Variscan granites and metamorphic pararocks (mica slate, gneisses, phyllites, quartzites). The Precambrian and Old Paleozoic sedimentary rocks were metamorphosed during the Variscan deformation. The Fichtelgebirge granites intruded post-Sudetic (330-310 ma) and post-Asturian (290-280 ma). In the area around Marktredwitz (Waldsassener Schiefergebirge) volcanic rocks pushed up in the Tertiary. While the Fichtelgebirge belongs to the Saxothuringian of the Variscids, the Upper Palatinate Forest in the southeast of the map sheet belongs to the Moldanubian. It is made up of metamorphites (gneiss, metabasite and anatexite) that emerged from the early Variscan overprint of Precambrian rocks. Here, too, extensive granitic plutonic rocks intruded in the Carboniferous. Slate Mountains and Bohemian Massif are cut off to the southwest by the Frankish Line, one of the major NW-SE fault zones in Central Europe. At the fault, the basement was z. T. lifted out more than 1000 m. In the south-west, the South German escarpment landscape with the Mesozoic of the East Bavarian Schollenland and the Franconian Jura joins. With its Jurassic sedimentary rocks, the Franconian Jura is one of the dominant mountain ranges in the southern German escarpment landscape. In addition to the legend, which provides information about the age, petrography and genesis of the units shown, three geological sections provide insights into the structure of the subsoil. In the northwest-southeast profile, the Franconian Forest, the Münchberg Gneiss Massif, the Fichtelgebirge and the Moldanubian Massif of the Bohemian Massif are crossed. Two northeast-southwest profiles illustrate the transition from the Franconian Forest or Fichtelgebirge to the southern German escarpment landscape via the fault of the Franconian Line.