Lake ontario shoreline (partial) project period: june 29, 2023 - june 30, 2025PROJECT abstract: lidar at USGS quality level 2 will be collected along the new york portion of the lake ontario shoreline…

Lake ontario shoreline (partial) project period: june 29, 2023 - june 30, 2025PROJECT abstract: lidar at USGS quality level 2 will be collected along the new york portion of the lake ontario shoreline in orleans county and from wayne county east through jefferson county. Coverage continues along the shoreline of the stlawrence river in jefferson county and most of ST lawrence county. Coverage extends inland to include all of orleans county and portions of cayuga, jefferson, oswego, ST. Lawrence and wayne counties, totaling around 2,337SQUARE miles. All six counties have shoreline along lake ontario which is a critical economic and ecological asset. This shoreline is susceptible to negative impacts of lake level rise in the springtime and was under a state of emergency from may 20, 2019 thru may 20, 2020. Completion of this project would have the lake ontario shoreline with data that is 2019 or newer. This watershed is an irreplaceable natural resource and up-to-date geospatial data is an effective tool in protecting IT. This project continues new york state s efforts to update statewide elevation data via lidar collection in coordination with federal efforts. The planned project will cover all or parts of six counties (cayuga, jefferson, orleans, oswego, ST. Lawrence and wayne) in NY along the lake ontario shoreline, replacing portions of two lidar-derived datasets. All new collections will meet quality level 2 specifications, and are planned to begin in spring 2023.NYS proposes to complete this project using their curent contract with the sanborn map company. To maximize use of the 2023 flight window, we have already briefed sanborn of the planned project. Once 3DEP funding is approved, we will task sanborn. NYS data review will use the same processes used on previous accepted 3DEPLIDAR projects. Before data collection, NYS reviews the flight plans for appropriate flying height and swath overlap. Survey plans are reviewed to ensure sufficient control and checkpoint data. During flight season, the contractor and NYS communicate regularly to track weather and ground conditions, equipment staging, and progress. NYS expects contiguous areas to be collected. All data feeds (abgps, IMU, etc.) are reviewed. Flight and ground survey reports andlidar swath data are reviewed next. The swath data is reviewed for full coverage plus absolute and relative spatial accuracy. NYS collects independent quality control data to ensure sufficient spatial and land cover-type coverage.once the classified point cloud is reviewed, the contractor is informed of any issues. After the issues are addressed, the contractor produces the final DEM dataset and metadata. The DEM surface is compared to checkpoints and with the tin from the point cloud. Bridge locations are reviewed for correct modeling. NYS creates a report describing the results of our review process which will be part of the delivery to USGS.