Basemap Framework Submission for Shelby County, TN, USA

Resource lineage description

source

source description  Source Contribution: Spatial and attribute information for USGS 7.5-Minute Series Topographic Quadrangle Map Boundaries in S_Quad_Index and tiling index for raster data in S_Base_IndexSource Type Digtital data

source citation

Title USGS 1:24000-scale, 1:6000-scale, and Digital Orthophoto Quadrangles

publication  Date   2007-01-01

cited responsible party - publisher

organisation Name  United States Geological Survey (USGS)

Contact information

Address

, Reston, VA

cited responsible party - originator

organisation Name  United States Geological Survey (USGS)

source

source description  Source Contribution: Spatial and attribute information for communities and unincorporated areas in S_POL_LN, S_TRNSPORT_LN, S_WTR_AR, S_WTR_LNSource Type Vector digital data

source citation

Title Tennessee Basemapping Program Data

publication  Date   2006-01-01

cited responsible party - publisher

organisation Name  State of Tennessee Department of Finance and Administration, Office of Information Resources

Contact information

Address

, Nashville, TN

cited responsible party - originator

organisation Name  State of Tennessee Department of Finance and Administration, Office of Information Resources

source

source description  Source Contribution: Spatial and attribute information for communities and unincorporated areas in S_PERM_BMKSource Type Vector digital data

source citation

Title Horizontal and Vertical Geodetic Control Data for the United States

publication  Date   2004-01-01

cited responsible party - publisher

organisation Name  NOAA, National Geodetic Survey

Contact information

Address

, Silver Spring, MD

cited responsible party - originator

organisation Name  NOAA, National Geodetic Survey

source

source description  Source Contribution: Spatial and attribute information for S_Gen_StructSource Type Raster digital data

source citation

Title Created by Taylor Engineering, Inc. using FIS profiles

publication  Date   2007-01-01

cited responsible party - publisher

organisation Name  Taylor Engineering, Inc.

Contact information

Address

, Tampa, FL

cited responsible party - originator

organisation Name  Federal Emergency Management Agency

source

source description  Source Contribution: Spatial and attribute information for S_Firm_Pan generated from USGS Quadrangle index.Source Type Vector digital data

source citation

Title DFIRM Panel Index generated from USGS Quadrangle Index

publication  Date   2009-11-17

cited responsible party - publisher

organisation Name  Taylor Engineering, Inc.

Contact information

Address

, Tampa, FL

cited responsible party - originator

organisation Name  United States Geological Survey (USGS)

AbsoluteExternalPositionalAccuracy

name Of Measure Horizontal Positional Accuracy Report

evaluation Method Description  The DFIRM Database consists of countywide vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Horizontal accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system.

AbsoluteExternalPositionalAccuracy

name Of Measure Horizontal Positional Accuracy

measure Description  The minimum horizontal positional accuracy for new FIRM base map data is that of the default base map, the USGS DOQs, which have an NSSDA radial accuracy of 38 feet. Data that meet higher accuracy standards are also acceptable. Accuracy of 38 feet is the same as radial root mean square error (RMSEr) of 22 feet. (Guidelines and Specifications Vol 1, p. 70)

Quantitative Result

result value 11.5824

value Units

Completeness Commission

evaluation Method Description  The Basemap datasets represents all the features utilized during the study mapping process to spatially position the DFIRM information and highlights the specific prioritization process laid out in the Guidelines and Specifications Vol 1, p. 69 in their selection for use. The final selection criteria, and rational for inclusion should be outlined here, along with rational for exclusion of use of specific base map datasets if applicable.

Completeness Omission

evaluation Method Description  The Basemap datasets represents all the features utilized during the study mapping process to spatially position the DFIRM information and highlights the specific prioritization process laid out in the Guidelines and Specifications Vol 1, p. 69 in their selection for use. The final selection criteria, and rational for inclusion should be outlined here, along with rational for exclusion of use of specific base map datasets if applicable.

ConceptualConsistency

measure Description  Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. Tests for logical consistency are performed by DFIRM tools topology verification software.