2011 - 2012 New York State Department of Environmental Conservation (NYSDEC) Lidar: Coastal New York (Long Island and along the Hudson River)
This kmz file shows the extent of coverage for the 2012 NYDES lidar data set.
Light Detection and Ranging (LiDAR) data is remotely sensed high-resolution elevation data collected by an airborne collection platform. This LiDAR dataset is a survey of areas of coastal New York, including Long Island, eastern Westchester, and the tidal extents of the Hudson River. The project area consists of approximately 950 square miles. The project design of the LiDAR data acquisition was developed to support a nominal post spacing of 1.0 meter or better (1.0 meter GSD). GMR Aerial Surveys Inc. d/b/a Photo Science, Inc. acquired 740 flight lines in 63 lifts between November 2011 and April 2012, while no snow was on the ground, rivers were at or below normal levels, no strong onshore winds, high waves, floods, or other anomalous weather conditions. Specified areas of the project were collected at a tide stage where water levels are at least 1-foot below mean sea level (MSL). This collection was a joint effort by the NOAA Coastal Services Center (CSC) and the New York State Department of Environmental Conservation. The data collection was performed with three Cessna 206 single engine aircrafts, utilizing Optech Gemini sensors; collecting multiple return x, y, and z as well as intensity data. The data were classified as Unclassified (1), Ground (2), Low Point (Noise) (7), Water (9), Breakline Edge (10), Withheld (11), Tidal Water (14), Overlap Default (17), and Overlap Ground (18), Overlap Water (25), and Overlap Tidal Water (30). Upon receipt, the NOAA Coastal Services Center (CSC), for data storage and Digital Coast provisioning purposes, converted these classifications to the following: 1 - Unclassified 2 - Ground 7 - Low Point (Noise) 9 - Water NOAA tide gauges were used as the basis for flight planning the tidally coordinated areas. Some areas were collected using tidal restraints as listed below: Tidal Wetlands and tributary mouths selected for tidal coordination at Mean Sea Level (MSL) minus 1 foot were: Rondout Creek Outlet; Vanderburg Cove, Moodna Creek, Constitution Marsh, Iona Marsh, Annsville Creek, Croton River Outlet, Marlboro Marsh, Manitou Marsh, Fishkill Creek Outlet, and Wappingers Creek Outlet. The Upper Hudson area from North of Goose Island was also collected to the same specification. Tidal Wetlands and tributary mouths selected for tidal coordination at Mean Sea Level (MSL) were: Haverstraw at Minisceongo Creek and Piedmont Marsh. The remainder of the project area had no tidal restrictions for collection. In order to post process the LiDAR data to meet task order specifications, Photo Science, Inc. established a total of 81 control points that were used to calibrate the LiDAR to known ground locations established throughout the New York project area. Trimble R8-3 GNSS receivers were used to complete the collection. Real Time Kinematic (RTK) survey methodology was typically performed using the New York State Spatial Reference Network (NYSNet), a CORS/Real Time GPS Network. Additionally, control values from various other projects completed by Photo Science in and around the project area, were used as supplemental control points to assist in the calibration of the LiDAR dataset. The dataset was developed based on a horizontal projection/datum of UTM NAD83 (NSRS2007), UTM Zone 18, meters and vertical datum of NAVD1988 (GEOID09), meters. Upon receipt, for data storage and Digital Coast provisioning purposes, the NOAA Coastal Services Center converted the data to GRS80 Ellipsoid (GEOID09) heights, to geographic (NAD83, NSRS2007) coordinates, and from las format to laz format. LiDAR data were collected in RAW flightline swath format, processed to create Classified LAS 1.2 Files formatted to 2093 individual 750m x 750m tiles, Hydro Flattening Breaklines in Esri 1.0 meter gridded V-Datum ESRI Grid files formatted to the same 3000m x 3000m tile schema. LiDAR Data was originally delivered to NOAA/Dewberry for quality control validation under Delivery Lots 1 and 2. The lineage (data quality), positional, content (completeness), attribution, logical consistency, and accuracies of all digital elevation data produced conform to the specifications stipulated in NOAA Task Order EA133C11CQ0009 - T011.
|Distributor||DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National
Oceanic and Atmospheric Administration, U.S. Department of Commerce
|Dataset Point of Contact||DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National
Oceanic and Atmospheric Administration, U.S. Department of Commerce
Documentation links not available.
|Data Presentation Form:||
|Dataset Progress Status||Complete|
|Data Update Frequency:||Unknown|
Lifts were flown out of specific airports at which base stations were set up and, sometimes, specific tide stations were used, creating another break in areas. 1B1 contained 46 flight lines and was flown on January 9, 2012 and January 11, 2012 with Optech SN247 in N2448G. 20N contained 39 flight lines and was flown on February 19-20, 2012 with Optech SN247 in N2448G. ALB contained 31 flight lines and was flown on January 7, 2012 and January 9, 2012 with Optech SN247 in N2448G. FRG-NOAA contained 144 flight lines flown on February 2-6, 2012; February 9, 2012; February 13-14, 2012 with Optech SN247 in N2448G. GON contained 15 flight lines flown on November 26, 2011 with Optech SN240 in N9471R. HTO contained 92 flight lines flown on January 15-16, 2012; January 18, 2012; and January 20, 2012 with Optech SN247 in N2448G. HWV contained 110 flight lines flown on January 25, 2012; January 28, 2012; January 30-31, 2012 with Optech SN247 in N2448G. POU contained 94 flight lines flown on December 12-14, 2012; and December 16, 2012 with Optech SN240 in N9471R. SWF-NOAA contained 32 flight lines flown on December 18-19, 2011 with Optech SN240 in N9471R. HPN contained 37 flight lines flown on April 6-7, 2012 with Optech SN246 in N7266Z. 1B1-TID-HUDSON contained 5 flight lines and was flown on February 20, 2012 with Optech SN247 in N2448G. HPN-TID-CROTON contained 5 flight lines flown on February 19, 2012 with Optech SN247 in N2448G. HPN-TID-HARVEST contained 6 flight lines flown on February 19, 2012 with Optech SN247 in N2448G. HPN-TID-PIERMON contained 4 flight lines flown on February 18, 2012 with Optech SN247 in N2448G SWF-TID-IONA-MA contained 9 flight lines flown February 17, 2012 with Optech SN247 in N2448G. SWF-TID-MARL-WA contained 5 flight lines flown February 17, 2012 with Optech SN247 in N2448G. SWF-TID-MOOD-FI contained 7 flight lines flown February 17, 2012 with Optech SN247 in N2448G.
|Purpose:||The project was developed by the National Oceanic and Atmospheric Administration's (NOAA) Coastal Services Center in partnership with the New York State Department of Environmental Conservation (NYSDEC) to collect and deliver topographic elevation point data derived from multiple return light detection and ranging (LiDAR) measurements for areas of coastal New York including Long Island, eastern Westchester, and the tidal extents of the Hudson River. Data are intended for use in coastal management decision making, including applications such as detailed mapping of areas at risk of sea level rise according to projections developed by NYS and the remapping of Coastal Erosion Hazard Areas. Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEM.|
|Time Period:||2011-11-26 to 2012-04-07|
|Spatial Reference System:||urn:ogc:def:crs:EPSG::4269 Ellipsoid in Meters|
|Spatial Bounding Box Coordinates:||
|Spatial Coverage Map:|
|Use Constraints||No constraint information available|
|Fees||Fee information not available.|
Last Modified: 2013-01-22
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