This Feature Class was created in 2014 as a part of the State of Connecticut’s Policy Intergovernmental Policy Division grant to the Southern Connecticut Regional Council of Governments for the Regional Web-Based GIS program.The development of the parcel layer was started in 1998-1999 by East Coast Mapping of New Hampshire. East Coast created CAD Drawings for the Town of Wallingford generated through the digitization of Town of Wallingford’s Tax Maps. By use of stereoscopic techniques East Coast created a seamless parcel base from a 2000 aerial flight’s orthophoto’s (1x600ft scale). The CAD files and base were then given to the Wallingford’s Town Engineer who maintained the base. New England Geosystems of Middletown, CT received the CAD files from Wallingford in 2014 and converted the files to GIS format to create the parcel layer. Last Updated: April 2019

The New Hampshire Political Boundaries (pbnh) layer provides a digital representation of corporate boundaries at the town level. It was derived from the 1:24,000-scale USGS Digital Line Graphs (DLGs).

This dataset is a set of polygons representing the center area(s) of each municipality in New Hampshire. Community center areas were delineated by staff at the nine Regional Planning Agencies based on a common methodology, with input and review from staff at the NH Department of Environmental Services. The approach for delineating these areas focused on key characteristics of the nature of development including the presence of a higher-density development and/or a mix of different types of uses, such as residential, commercial and public uses, core main streets areas and historic districts, higher-density neighborhoods within walking distance, appropriate zoning to retain its current characteristics, and recognition by the community as its center. Municipalities can have multiple center areas, provided they each meet the criteria described. Boundary lines generally follow the limits of current development (rather than parcel or property lines) and may follow significant manmade or natural features that serve as a boundary, such as a major roadway or river.

The New Hampshire State Boundary (nh) layer provides a digital representation of the New Hampshire state boundary.It was derived from the 1:24,000-scale USGS Digital Line Graphs (DLGs).

The New Hampshire Congressional District Boundaries, 2022, contains the US district boundaries generated based on the 2020 US Census population count. Boundaries were derived by applying district codes retrieved from the NH Secretary of State web site to the geometry provided by the GRANIT town boundary layer (PBNH).

The New Hampshire House of Representatives Floterial District Boundaries, 2012, contains "floterial" district boundaries drawn by the New Hampshire Legislature based on the 2010 US Census population count. Floterial districts overlay other NH House of Representatives districts ("base" districts), which are available from companion shape file NHHouseDists2012. Both shape files are required to depict all NH House of Representatives districts. District boundaries were derived by applying district codes retrieved from the NH Secretary of State web site to the geometry provided by the GRANIT town boundary layer (PBNH).

SSURGO depicts information about the kinds and distribution of soils on the landscape. The soil map and data used in the SSURGO product were prepared by soil scientists as part of the National Cooperative Soil Survey.The dataset was downloaded on 1/26/2021 from the NRCS GeoSpatial Data Gateway (https://gdg.sc.egov.usda.gov/GDGOrder.aspx) and processed by NH GRANIT staff at the UNH Earth Systems Research Center to:1) Project to NH State Plane feet, NAD832) Clip to the NH state boundary3) Attach key soil attributes from the collection of related tables distributed by NRCS (see SSURGO_Metadata_-_Table_Column_Descriptions.pdf for descriptions)4) Add and populate the "acres" fieldThe remainder of this metadata record is as provided with the downloaded source data, with the exception of the addition of several theme keywords and updating the Spatial Reference Information to reflect the processing described above.

The NH Department of Environmental Services (NHDES) Geodata Portal is the official open data hub for accessing authoritative environmental geospatial information across the state of New Hampshire. Developed and maintained by NHDES, this portal provides public access to a wide range of interactive maps, downloadable datasets, and GIS-based applications related to environmental protection, water resources, land use, conservation planning, and regulatory programs.Designed to support researchers, municipal planners, environmental professionals, and the general public, the Geodata Portal promotes transparency, informed decision-making, and collaborative environmental stewardship. Through a user-friendly and mobile-responsive interface, users can explore data on wetlands, drinking water supplies, wastewater infrastructure, floodplains, permits, water quality monitoring, air emissions, and more.The portal supports key NHDES programs and initiatives, including:Wetlands permitting and mitigation (e.g., ARM Fund projects)Drinking water source protectionSurface water quality assessments and standardsGroundwater and stormwater managementClimate and resilience planningCompliance and enforcement toolsUsers can view and download data, connect to ArcGIS Online content, or explore apps and dashboards that bring complex environmental information to life through visualization and interactivity.🔍 Key FeaturesSearchable and filterable data catalogInteractive web maps and applicationsDownloadable GIS layers in multiple formatsReal-time dashboards and reporting toolsIntegration with ArcGIS Online and Enterprise environments🔧 Maintained by:New Hampshire Department of Environmental Services (NHDES)GIS & Data Integration Team

The shapefile contains the basic building blocks for voting districts in New Hampshire. For cities and for the town of Derry, where there are voting wards, the ward boundaries are shown and polygons are identified by ward. For towns and cities where there are no wards, the entire municipality is shown and named.

Law Enforcement Locations Any location where sworn officers of a law enforcement agency are regularly based or stationed. Law Enforcement agencies "are publicly funded and employ at least one full-time or part-time sworn officer with general arrest powers". This is the definition used by the US Department of Justice - Bureau of Justice Statistics (DOJ-BJS) for their Law Enforcement Management and Administrative Statistics (LEMAS) survey. Although LEMAS only includes non Federal Agencies, this dataset includes locations for federal, state, local, and special jurisdiction law enforcement agencies. Law enforcement agencies include, but are not limited to, municipal police, county sheriffs, state police, school police, park police, railroad police, federal law enforcement agencies, departments within non law enforcement federal agencies charged with law enforcement (e.g., US Postal Inspectors), and cross jurisdictional authorities (e.g., Port Authority Police). In general, the requirements and training for becoming a sworn law enforcement officer are set by each state. Law Enforcement agencies themselves are not chartered or licensed by their state. County, city, and other government authorities within each state are usually empowered by their state law to setup or disband Law Enforcement agencies. Generally, sworn Law Enforcement officers must report which agency they are employed by to the state. Although TGS's intention is to only include locations associated with agencies that meet the above definition, TGS has discovered a few locations that are associated with agencies that are not publicly funded. TGS deleted these locations as we became aware of them, but some may still exist in this dataset. Personal homes, administrative offices, and temporary locations are intended to be excluded from this dataset; however, some personal homes of constables are included due to the fact that many constables work out of their homes. TGS has made a concerted effort to include all local police; county sheriffs; state police and/or highway patrol; Bureau of Indian Affairs; Bureau of Land Management; Bureau of Reclamation; U.S. Park Police; Bureau of Alcohol, Tobacco, Firearms, and Explosives; U.S. Marshals Service; U.S. Fish and Wildlife Service; National Park Service; U.S. Immigration and Customs Enforcement; and U.S. Customs and Border Protection. This dataset is comprised completely of license free data. FBI entities are intended to be excluded from this dataset, but a few may be included. The Law Enforcement dataset and the Correctional Institutions dataset were merged into one working file. TGS processed as one file and then separated for delivery purposes. With the merge of the Law Enforcement and the Correctional Institutions datasets, the NAICS Codes & Descriptions were assigned based on the facility's main function which was determined by the entity's name, facility type, web research, and state supplied data. In instances where the entity's primary function is both law enforcement and corrections, the NAICS Codes and Descriptions are assigned based on the dataset in which the record is located (i.e., a facility that serves as both a Sheriff's Office and as a jail is designated as [NAICSDESCR]="SHERIFFS' OFFICES (EXCEPT COURT FUNCTIONS ONLY)" in the Law Enforcement layer and as [NAICSDESCR]="JAILS (EXCEPT PRIVATE OPERATION OF)" in the Correctional Institutions layer). Records with "-DOD" appended to the end of the [NAME] value are located on a military base, as defined by the Defense Installation Spatial Data Infrastructure (DISDI) military installations and military range boundaries. "#" and "*" characters were automatically removed from standard fields that TGS populated. Double spaces were replaced by single spaces in these same fields. Text fields in this dataset have been set to all upper case to facilitate consistent database engine search results. All diacritics (e.g., the German umlaut or the Spanish tilde) have been replaced with their closest equivalent English character to facilitate use with database systems that may not support diacritics. The currentness of this dataset is indicated by the [CONTDATE] field. Based on the values in this field, the oldest record dates from 04/26/2006 and the newest record dates from 10/19/2009

This layer is a modified version of the 1:24K USGS DLG-derived political boundaries datalayer provided by NH Granit. Subtle deviations in the linework between this layer and Granit's reflect, 1) NRPC's adoption MassGIS's representation of the state boundary between New Hampshire and Massachusetts using survey points, and, 2) areas where town-originated digital parcel data overlapped, in which case the placement of the town boundary is at the estimated midpoint of the overlap, and the digital parcels were then edge-matched accordingly.

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).

Fire Stations in New Hampshire Any location where fire fighters are stationed or based out of, or where equipment that such personnel use in carrying out their jobs is stored for ready use. Fire Departments not having a permanent location are included, in which case their location has been depicted at the city/town hall or at the center of their service area if a city/town hall does not exist. This dataset includes those locations primarily engaged in forest or grasslands fire fighting, including fire lookout towers if the towers are in current use for fire protection purposes. This dataset includes both private and governmental entities. Fire fighting training academies are also included. This dataset is comprised completely of license free data. The Fire Station dataset and the EMS dataset were merged into one working file. TGS processed as one file and then separated for delivery purposes. Records with "-DOD" appended to the end of the [NAME] value are located on a military base, as defined by the Defense Installation Spatial Data Infrastructure (DISDI) military installations and military range boundaries. Text fields in this dataset have been set to all upper case to facilitate consistent database engine search results. All diacritics (e.g., the German umlaut or the Spanish tilde) have been replaced with their closest equivalent English character to facilitate use with database systems that may not support diacritics. The currentness of this dataset is indicated by the [CONTDATE] field. Based upon this field, the oldest record dates from 01/07/2005 and the newest record dates from 07/14/2008.

The New Hampshire House of Representatives District Boundaries, 2012, contains "base" district boundaries drawn by the New Hampshire Legislature based on the 2010 US Census population count. Companion shape file NHHouse2012Flot contains boundaries of NH House of Representatives "floterial" districts, which overlay the base districts. Both shape files are required to depict all NH House of Representatives districts. District boundaries were derived by applying district codes retrieved from the NH Secretary of State web site to the geometry provided by the GRANIT town boundary layer (PBNH).