New Hampshire Maps

Digital Data Availability Summary

NEW HAMPSHIRE	Spatial	Non-spatial	None
GIS Data Portals	x
Reference and Supporting Data
Cadastral Reference Grid			x
Shorelines			x
Coastal Imagery	x
Bathymetry	x
Marine Jurisdictional Boundaries			x
Submerged Lands Boundaries			x
Ownership
Submerged Lands Parcels			x
General Property and Parcel Data			x
Public and Conservation Lands	x
Leases and Other Use Authorizations
Aquaculture and Shellfish			x
Other Use Authorizations			x
Marine Managed Areas			x
Local Parcel Information	2 coastal counties
Deed Records		1
Assessment Data		1
Parcels		1

Why is marine cadastral data important for conservation and marine spatial planning?

Marine Cadastral Data Management

The Nature Conservancy’s 2010 Nationwide Comparative Assessment of State-level Marine Cadastral Data in New Hampshire consisted of an interview with the New Hampshire Coastal Program1 and a review of relevant Internet sites.

State Data Management: The NH GRANIT GIS Clearinghouse (GRANIT), located within the University of New Hampshire, provides a central repository of state published data; data downloads are available through the GRANIT ftp site. The data download site is the best source of data that is relevant to marine management.

The NH Coastal Program works in partnership with National Marine Research Reserves, the National Estuary Programs, local communities, and applicants on federal consistency review. The Coastal Program is involved with the Gulf of Maine Council on the Environment and its regional programmatic and data gathering efforts, which are published on GRANIT.

Marine Cadastre and Supporting Data

Cadastral Reference System: New Hampshire does not have a marine cadastre.

Supporting Reference Data

Shorelines and Bathymetry: No coastal shorelines found. Generally NH USE USGS coastlines, but they may not be consistent among datasets. A new Army Corps of Engineers shoreline LIDAR will be tidally referenced and allow creation of a better hi-resolution coastline.

Coastal Imagery: NH Granit has 2009 NAIP and 2005 1ft Color aerials available for the coastal counties through GRANIT.

Marine and Submerged Lands Boundaries: There are a number of lateral boundary disputes. The Maine boundary has been adjudicated a number of times and the Massachusetts boundary is not entirely clear.

Fisheries and coastal wetlands are available from NH GRANIT. This includes all 17 coastal towns and is extended out to 3 n.m. No boundary files that were explicit for marine jurisdictions were found.

Ownership, Leases and Other Authorizations: Nearly all land below MHW belongs to the state. Towns do not have marine jurisdiction or leasing programs. Shell fishing areas are open and require a permit similar to a fishing license, which are not place-based. There are some tidal wetlands that are privately owned as a result of Kings Grants, but maps of these areas were not identified.

Marine Managed Areas: There are seven identified eligible marine managed areas in the Marine Protected Areas Inventory. The New Hampshire Division of Parks and Recreation is responsible for all of the marine managed areas. No existing Marine Protected Areas were identified in New Hampshire.

Local Parcel Information: No state data is available. It will be necessary to contact the individual counties and municipalities to determine the status of parcel data (see local parcel information, below).

GIS Portals

• GRANIT (Web site). Download or request data, view metadata, and use online interactive map.

Reference and Supporting Data

Cadastral Reference Grid

Shorelines

Coastal Imagery

Bathymetry

Marine Jurisdictional Boundaries

No state level data found specific to marine jurisdictions.

Submerged Lands Boundaries

No data found.

Ownership

Submerged Lands Parcels

General Property and Parcel Data

Public and Conservation Lands

Leases and Other Use Authorizations

Aquaculture and Shellfish

Other Use Authorizations

Marine Managed Areas

No state data was found on marine managed areas.

Local Parcel Information

Rockingham County

Deed Records	Public Record Search; allows document search by plans and maps, town name, person’s name or book and page or plan number, a list of “close” entries is presented; descriptions include type of document, e.g. easements, lot line adjustments, etc.; copy of actual document is retrievable and printable (with account number issued by Registrar of Deeds, contact them at support@nhdeeds.com). (Web site)
Assessment Data	Town of Rye Assessor’s Online Database; this site requires free registration, with input of location, owner name, map/block yields this assessment information, characteristics of improvements including sketch map, ownership record, land use code, site photograph. (Web site) Town of North Hampton Assessor’s Online Database; with input of location, owner name, map/block yields this information, characteristics of improvements including sketch map, ownership record, land use code, site photograph. (Web site)
Parcels	“All records in the Registry are indexed by owner's name, not a property address. You must have a name and if not, then you should contact the city assessor or the town tax collector where the property is located. They will have the property owner's name listed for that property.” Parcel maps do not appear to be on-line. (Web site or Web site)

Strafford County

 

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