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Layer: Merrimack Buildings (ID:9)

View In:   Map Viewer

Name: Merrimack Buildings

Display Field: Mun

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Is View: true

Is Updatable View: true

Source Schema Changes Allowed: true

Sources

Description: <div style="text-align:Left;"><div><div><p><span>Features within the the following towns were acquired from the municipality directly, with estimated year of creation in parentheses: Lyndeborough (2007), Milford (2013), Hudson (2000), Merrimack (2013), Litchfield (2005), and Nashua (2011). In these areas the data are likely to have originated via photogrammetry.</span></p><p><span>Approximately one-half of the buildings in the Town of Pelham were acquired through a download from OpenStreetMap in Spring of 2014; The origins of these footprints is unknown, but there is a high degree of agreement between these features and buildings as visible on aerial imagery.</span></p><p><span>For coverage in all other areas, features were created in-house in 2013 using heads-up digitizing against 2010 6-inch or 1-ft aerial imagery distributed by GRANIT. &nbsp;Wherever possible, buildings were created with 90 degree building corners.</span></p><p><span>The NRPC buildings datalayer contains attributes to support the thematic display of certain building types. &nbsp;Within the Building Use Code field NRPC has identified buildings housing town-level functions, e.g. town halls, police, fire, public schools, etc. &nbsp;These data were developed over time by NRPC in conjunction with member communities.</span></p><p><span>In 2015 NRPC received grant support from the US Department of Transportation Pipeline and Hazardous Materials Safety Administration (USDOT PHMSA) to map so-called "identified sites" in the region which are locations with large or hard-to-evacuate populations. &nbsp;Under this grant, NRPC confirmed its existing inventory of public schools, and also added private and charter schools in the region according to an </span><a target="_blank" href="https://my.doe.nh.gov/Profiles/PublicReports/PublicReports.aspx?ReportName=SchoolListCSV"><span>online listing from NH Department of Education (NHDOE)</span></a><span> accessed in November 2015. This listing does not contain records for post-secondary educational programs, however NRPC added large post-secondary institutions to the datalayer according to local knowledge, identifying the main administrative building for mapping.</span></p><p><span>In December 2015 accessed the </span><a target="_blank" href="https://new-hampshire.my.site.com/nhccis/NH_ChildCareSearch"><span>NH Department of Health and Human Services (NHDHHS) Childcare Search database</span></a><span> and mapped currently licensed home and institutional programs in the region according to this list. &nbsp;There were numerous school locations that also offer child-care (e.g. after-school programs); NRPC coded these locations as schools.</span></p><p><span>In December 2015 NRPC consulted the NHDHHS Facilities Search database and mapped the following licensed facility types in the region: hospitals, birthing centers, and ambulatory surgery centers; residential medical facilities including nursing homes, supported residential care, residential treatment and rehab, assisted living, community residences (4+ beds), psych residential, and hospice houses; and lastly day medical service facilities including renal dialysis, physical and occupational therapy, adult day care, and educational health centers. &nbsp;Administrative offices, as well as locations such as labs, physician offices, and non-emergent care with presumably smaller ambulatory patient populations were excluded from mapping. &nbsp;NHDHHS currently makes these data available in an </span><a target="_blank" href="https://www.dhhs.nh.gov/sites/g/files/ehbemt476/files/documents2/licensedfacilities.pdf"><span>online pdf document.</span></a></p><p><span>Between June 2018 and March 2019 NRPC tagged approximately 68 buildings as gas stations based on local knowledge.</span></p><p><span>To better support hazard mitigation planning, in 2023-2024 NRPC used a offline copy of Nearmap vertical imagery to improve the currency and completeness of building footprints in the region. &nbsp;The so-called "identified sites" and licensed childcare and medical facilities were also brought up to date according to their authoritative online sources as described above. &nbsp;Museums were also added to the inventory.</span></p><p><span>Disclaimer: These data are an NRPC interpretation of original source maps and are appropriate for planning purposes; NRPC and its member communities, respectively, do not make any warranty, representation, or guarantee as to the content, sequence, accuracy, timeliness, or completeness of any of the information provide herein. The user should not rely on the data provided herein without verifying its accuracy independently. NRPC and its member communities, respectively, explicitly disclaim any representations and warranties including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. NRPC and its member communities, respectively, shall assume no liability for any errors, omissions, or inaccuracies in the information provided regardless of how caused and for any decision made or action taken or not taken by the user in reliance upon any information or data furnished hereunder.</span></p></div></div></div>

Copyright Text: Users please cite, "NRPC GIS Program."

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

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HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field:

Type ID Field: FeatureTypStd

Fields:
Types:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 11/12/2025 1:39:23 PM

Schema Last Edit Date: 11/12/2025 1:39:28 PM

Data Last Edit Date: 11/12/2025 1:40:03 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat