Natural Levees

  • Post category:Glossary

A deposit of sand or mud built up along, and sloping away from, either side of the floodplain of a river or stream. (http://dictionary.reference.com/browse/natural+levee)

Newly Inundated

  • Post category:Glossary

Applies to areas that do not flood under existing conditions, but are predicted to flood under Project or NAA conditions.

Non-Federal Sponsor

  • Post category:Glossary

The United States Army Corps of Engineers (USACE) defines the "non-Federal sponsor" as a 1) a legally constituted public body (including a federally recognized Indian tribe); or 2) a nonprofit…

No Action Alternative (with Emergency Measures)

  • Post category:Glossary

Similar to the Base No Action Alternative, but also assumes that emergency measures currently being pursued in the project area would continue to be implemented as necessary due to flooding.…

Non-Residential Building (including hotel/motel)

  • Post category:Glossary

This is a commercial or non-habitational building or a mixed-use building that does not qualify as a residential building. This category includes but is not limited to: small businesses, churches,…

National Geodetic Vertical Datum (NGVD) of 1929

  • Post category:Glossary

National standard reference datum for elevations, formerly referred to as Mean Sea Level (MSL) of 1929. NGVD 1929 may be used as the reference datum on some Flood Insurance Rate…

National Heritage Database

  • Post category:Glossary

A database containing information on rare plants, animals, native plant communities, and other rare features. (http://www.dnr.state.mn.us/nhnrp/nhis.html)

National Flood Insurance Program (NFIP)

  • Post category:Glossary

The program of flood insurance coverage and floodplain management administered under the Act and applicable federal regulations promulgated in Title 44 of the Code of Federal Regulations, Subchapter B. (Federal…

National American Vertical Datum (NAVD) of 1988

  • Post category:Glossary

A vertical datum is the starting point for measuring elevations. Datums help determine the height differences between points in the ground. There are five different vertical datums at various bench…

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