Portland Land Use Code

Citation: Portland Land Use Code
Parent Document: Portland Land Use Code
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/a5dcd1dc-4117-40b3-b3da-74a56919e14b ↗

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North American Vertical Datum (NAVD). The                    Open space, public. Open space maintained for
national datum whose standard was established in             the use of the general public. Public open space may
1988, which is the new vertical datum used by the            include parks, plazas, and public seating areas.
National Flood Insurance Program (NFIP) for all
new Flood Insurance Rate Maps. NAVD is based                 Outlet stream. Any perennial or intermittent
upon vertical datum used by other North American             stream, as shown on the most recent highest
countries such as Canada and Mexico and was                  resolution version of the national hydrography
established to replace NGVD because of constant              dataset available from the United States Geological
movement of the earth’s crust, glacial rebound and           Survey on the website of the United States
subsidence, and the increasing use of satellite              Geological Survey or the national map, that flows
technology.                                                  from a freshwater wetland.

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