2012 MDEQ-FEMA Madison-Yazoo Lidar Survey
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:49821 | Updated: August 9, 2022 | Published / External
Item Identification
Title: | 2012 MDEQ-FEMA Madison-Yazoo Lidar Survey |
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Short Name: | ms2012_mdeq_fema_madison_yazoo_m2561_metadata |
Status: | Completed |
Publication Date: | 2013-09-16 |
Abstract: |
The project entails the acquisition and processing of LiDAR for approximately 1,265 square miles covering areas of Madison and Eastern Yazoo Counties. Collect and deliver high-density elevation point data derived from multiple-return light detection and ranging (LiDAR) measurements for use in supporting topographic analysis, including applications such as flood plain mapping. Hydro enforced breaklines were collected within the identified Special Flood Hazard Area for Madison County, MS including an additional 221sq. miles in the heavily developed areas in Madison County, and 112 sq. miles in a buffered area along the Big Black River in Yazoo County, MS. The data will be delivered as LiDAR Bare Earth within the areas designated in areas of Madison and Eastern Yazoo Counties to aid in visual interpretation of Flood Basin elevations and for addition to the MDEM elevation dataset. Also included in the delivery was LiDAR Intensity data in Tiff format. The intensity values are a measure of the return signal strength. It measures the peak amplitude of return pulses as they are reflected back from the target to the detector of the LiDAR system. These intensity images are a very useful tool to clients and can be used as a substitute for orthophotos. All data will comply with mapping guidelines and specifications as stated in the FEMA Procedure Memorandum No.61. |
Purpose: |
Atlantic Group will provide LiDAR products to support MDEQ in supporting solutions for a variety of purposes including updating DFIRM maps, hydrologic modeling, transportation routing, floodplain mapping and assessment of natural hazards. Furthermore, the data sets can be utilized by the general public including engineers, surveyors, appraisers and others interested parties to evaluate transportation and land use planning. |
Notes: |
10465 |
Supplemental Information: |
A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2561/supplemental/ms2012_mdeq_fema_madison_yazoo.KMZ The MDEQ Tennessee-Tombigbee report may be accessed at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2561/supplemental/ms2012_mdeq_fema_madison_yazoo.pdf |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category |
elevation
|
UNCONTROLLED | |
None | Bare Earth |
None | Ground Control |
None | Land Surface |
None | Light Detection and Ranging |
None | Point Cloud |
Temporal Keywords
Thesaurus | Keyword |
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UNCONTROLLED | |
None | Winter |
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Maintenance Frequency: | As Needed |
Data Presentation Form: | las |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of the following: MDEQ, USGS, The Atlantic Group, NOAA, the Office for Coastal Management, or its partners. |
Data Set Credit: | Bryan Daniel (Atlantic Group), Josh Helton (Atlantic Group), Patrick Robinson (Atlantic Group), Paul Weyant (Atlantic Group), Barbara Yassin (MDEQ) |
Support Roles
Data Steward
Date Effective From: | 2013-09-16 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Distributor
Date Effective From: | 2013-09-16 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Metadata Contact
Date Effective From: | 2013-09-16 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Point of Contact
Date Effective From: | 2013-09-16 |
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Date Effective To: | |
Contact (Organization): | NOAA Office for Coastal Management (NOAA/OCM) |
Address: |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address: | coastal.info@noaa.gov |
Phone: | (843) 740-1202 |
URL: | https://coast.noaa.gov |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -90.666399 | |
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E° Bound: | -89.726054 | |
N° Bound: | 32.992774 | |
S° Bound: | 32.392363 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
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Start: | 2012-02-19 |
Extent Group 1 / Time Frame 2
Time Frame Type: | Discrete |
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Start: | 2012-02-20 |
Extent Group 1 / Time Frame 3
Time Frame Type: | Discrete |
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Start: | 2012-02-21 |
Extent Group 1 / Time Frame 4
Time Frame Type: | Discrete |
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Start: | 2012-02-22 |
Extent Group 1 / Time Frame 5
Time Frame Type: | Discrete |
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Start: | 2012-02-23 |
Extent Group 1 / Time Frame 6
Time Frame Type: | Discrete |
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Start: | 2012-02-24 |
Spatial Information
Spatial Representation
Representations Used
Vector: | Yes |
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Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2561 ; |
Data Access Constraints: |
None |
Data Use Constraints: |
Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. These data depict the heights at the time of the survey and are only accurate for that time. |
Distribution Information
Distribution 1
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2561 |
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Distributor: | |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
Distribution 2
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2561/index.html |
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Distributor: | |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer |
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URL Type: |
Online Resource
|
URL 2
URL: | https://coast.noaa.gov |
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URL Type: |
Online Resource
|
URL 3
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2561/supplemental/ms2012_mdeq_fema_madison_yazoo.KMZ |
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Name: | Browse Graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | kmz |
Description: |
This graphic shows the extents of the lidar survey of Madison and Yazoo counties. |
Activity Log
Activity Log 1
Activity Date/Time: | 2016-05-23 |
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Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
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Description: |
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
Activity Log 3
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
Activity Date/Time: | 2018-03-13 |
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Description: |
Partial upload to move data access links to Distribution Info. |
Data Quality
Accuracy: |
To ensure FEMA accuracy of the LiDAR data deliverables, the MGI team will provide MDEQ/Geology a survey plan that calls for the integration of 60 Fundamental Vertical Accuracy checkpoints. Fundamental Vertical Accuracy (FVA) testing will be assessed by using checkpoints in open terrain. FVA is calculated at the 95% confidence level using RMSEz x 1.9600. |
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Horizontal Positional Accuracy: |
see accompanying report at https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2561/supplemental/ms2012_mdeq_fema_madison_yazoo.pdf; Quantitative Value: 0.49 meters, Test that produced the value: 0.49 m (1.64 ft). Horizontal Accuracy meets the NSSDA RMSE (r) of 2.20 ft and the NSSDA Accuracy (r) of 95% confidence level is 3.80 ft. |
Vertical Positional Accuracy: |
see accompanying report at https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2561/supplemental/ms2012_mdeq_fema_madison_yazoo.pdf; Quantitative Value: 0.11 meters, Test that produced the value: 0.11 m (0.37 ft). Vertical Accuracy meets the NSSDA RMSEz of 0.61 ft and the NSSDA Accuracy (z) of 95% confidence level is 1.19 ft. |
Completeness Measure: |
Cloud Cover: 0 |
Completeness Report: |
All data is complete to contracted completeness |
Conceptual Consistency: |
Utilizing an Optech 3100 multi-return system, Light Detection and Ranging (LiDAR) data will be collected to support the generation of a high-resolution point-cloud. The system consists of geodetic GPS positioning (AGPS), orientation derived from high-end inertial sensors (IMU), and a high-accuracy laser. The sensor is attached to the aircrafts underside and emits rapid pulses of light that are used to determine distances between the plane and terrain below. LIDAR data will be processed to yield a ground surface (Bare Earth). LAS formatted data will be delivered to MDEQ/Geology classified as bare earth as well as above ground points. |
Lineage
Process Steps
Process Step 1
Description: |
The flight path will be planned as a series of parallel flight lines with cross flight lines for the purposes of quality control. In addition, the flight plan will include flight line distances of 45 kilometers or less and zigzag flight line collection as a result of the inherent IMU drift associated with IMU systems. A digital flight line layout using OPTECH ALTM NAV flight design software for direct integration into the aircraft flight navigation system was created and used. |
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Process Date/Time: | 2012-01-01 00:00:00 |
Process Step 2
Description: |
LiDAR Sensor Calibration and LiDAR Processing. LIDAR calibrations are performed to determine and eliminate systematic bias that may occur within the hardware of the ALTM system. The systematic bias that are corrected involve scale, roll, and pitch. In addition to the calibration process regarding sensor installation, for every mission, the runway is kinematically surveyed by making three passes. The LiDAR system is flown at right angles over the runway several times and residuals are generated from the processed data. |
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Process Step 3
Description: |
Breaklines were captured within the identified SFHA for Madison County, MS, including a buffered 112 sq. mile area along the Big Black River in Yazoo County, MS. The breaklines are significant hydrological features that are appropriate to support the future development of 2-foot contours meeting a 1.19-foot absolute vertical accuracy at the 95% confidence level. Horizontal accuracy is computed using the formula RMSE (z) x 1.7308: 1-inch = 100 feet equivalent (Accuracy = 2.2 feet or 0.67 meters) as defined by the ASPRS Guidelines: Accuracy Reporting for topographic Data. This guideline implements the National Standard for Spatial Data Accuracy (NSSDA) for testing of topographic data. |
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Process Step 4
Description: |
Digital Elevation Models (DEMs) are generated in spatial software and have a final cell size of 4 feet. Each DEM is a 32-bit floating point GeoTiff. |
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Process Step 5
Description: |
The NOAA Office for Coastal Management (OCM) received topographic files in .laz format from the Mississippi Department of Environmental Quality (MDEQ). The files contained lidar elevation measurements. The data were received in Mississippi State Plane West 2300, NAD83 coordinates and were vertically referenced to NAVD88 using the Geoid09 model. The vertical units of the data were feet. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The topographic laz files were converted from a Projected Coordinate System (Mississippi State Plane West 2300) to a Geographic Coordinate system (NAD 83). 2. The topographic laz files' horizontal units were converted from feet to decimal degrees. 3. The topographic laz files were cleaned of error points above 492 ft and below 114 ft. 4. The topographic laz files' were converted from NAVD88 elevations to NAD83 ellipsoidal elevations using Geoid03 5. Classification 11 was moved to classification 12 due to OCM system requirements (class 11 is reserved for bathymetric points, though these points are overlap points, Class 12). |
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Process Date/Time: | 2013-09-16 00:00:00 |
Catalog Details
Catalog Item ID: | 49821 |
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GUID: | gov.noaa.nmfs.inport:49821 |
Metadata Record Created By: | Anne Ball |
Metadata Record Created: | 2017-11-15 15:22+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2022-08-09 17:11+0000 |
Metadata Record Published: | 2022-03-16 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2022-03-16 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2023-03-16 |