2007 US Army Corps of Engineers (USACE) National Coastal Mapping Topobathy Lidar (Bare Earth) - New York (Lake Erie shoreline)

This is a bare earth data set. The data contained in these files contain hydrographic and topographic data collected by the

CHARTS system along the Lake Erie coast of NY in Chautauqua and Erie Counties, from July 26 - August 4, 2007. The data were

collected and processed in geographic coordinates and ellipsoid heights. The positions were relative to NAD83 in decimal degrees

of longitude and latitude. The heights were converted from ellipsoid to orthometric heights (NAVD88) using the Geoid03 model

with the results in meters.

CHARTS integrates topographic and bathymetric lidar sensors, a digital camera and a hyperspectral scanner on a single remote

sensing platform for use in coastal mapping and charting activities. Data coverage generally extends along the coastline from

the waterline inland 500 meters (topography) and offshore 1,000 meters or to laser extinction (bathymetry).

The topographic lidar sensor has a pulse repetition rate of 9 kHz at 1064 nm (near-infrared wavelength). The bathymetric lidar

sensor has a pulse repetition rate of 1 kHz at 532 nm (green wavelength). Native lidar data is not generally in a format accessible

to most Geographical Information Systems (GIS). Specialized in-house and commercial software packages are used to process the

native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis.

Original contact information:

Contact Org: JALBTCX

Title: Data Production Manager

Phone: 228-252-1111

Email: shoals-info@sam.usace.army.mil

These data were collected as a part of the National Coastal Mapping Program to depict the elevations above and below the water

for the New York coastal zone.

10708

Any conclusions drawn from the analysis of this information are not the responsibility of the USACE,

JALBTCX, the Office for Coastal Management or its partners.

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer;

None

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.

Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.6.1500

These data are not attributed. | Quantitative Value: N/A | Quantitative Test Explanation: These data are not attributed.

The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.75m.; Quantitative Value: 0.75 meters, Test that produced the value: 1 Sigma

The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.20m.; Quantitative Value: 0.20 meters, Test that produced the value: 1 Sigma

Cloud Cover: Unknown

Not provided

The data provided in this file were tested against ground truth data. At these locations the lidar data matched within 0.20 meters,

and different flight line data agreed within 0.20 meters.