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  • Orthomosaic imagery for Whiskeytown Lake and surrounding area, expanded AOI, 2019-06-03

    Metadata Updated: November 12, 2020

    This portion of the data release presents an RGB orthomosaic image of an expanded area surrounding Whiskeytown Lake derived from Structure from Motion (SfM) processing of aerial imagery acquired on 2019-06-03. The orthomosaic is available in a high-resolution 14-centimeter (cm) version, as well as a medium-resolution 25 cm version. The high-resolution version is divided into two tiles (east and west) to reduce file download sizes. All imagery is provided in a three-band cloud-optimized GeoTIFF format, with 8-bit unsigned integer values compressed using high-quality JPEG compression. The raw imagery used to create the orthomosaic image was acquired from a manned aircraft on 2019-06-03. The acquisition flight was conducted by The 111th Group Aerial Photography, using a Nikon D850 camera. The acquisition covered two areas-of-interest (AOI) at different scales. The expanded AOI for this dataset (referred to as AOI-B) covered an area around Whiskeytown Lake up to the adjacent ridgelines. The goal for expanding the AOI for this acquisition was to create an orthomosaic image to qualitatively assess the post-fire erosion patterns in upslope areas of the drainages. The imagery for this AOI was acquired from an approximate altitude of 1,160 meters (3,800 feet) above ground level, to produce a nominal ground sample distance (pixel size) of 10 centimeters (4 inches). An onboard dual-frequency GPS receiver was used to record the precise time and position of each image. Coordinates for ground control points consisting of photo-identifiable objects were measured independently using survey-grade post-processed kinematic (PPK) GPS.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date May 27, 2020
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) May 27, 2020 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from DOI Open Data

    Graphic Preview

    RGB orthomosaic image from 2019-06-03, expanded AOI

    Additional Metadata

    Resource Type Dataset
    Metadata Date May 27, 2020
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) May 27, 2020 (publication)
    Responsible Party U.S. Geological Survey, Pacific Coastal and Marine Science Center (Point of Contact)
    Contact Email
    Guid
    Access Constraints Use Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigation purposes., Access Constraints: None
    Bbox East Long -122.502014
    Bbox North Lat 40.727250
    Bbox South Lat 40.551340
    Bbox West Long -122.684723
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description RGB orthomosaic image from 2019-06-03, expanded AOI
    Graphic Preview File https://www.sciencebase.gov/catalog/file/get/5e6be1bfe4b01d5092638a75?name=Whiskeytown_2019-06-03_orthomosaic_expandedAOI_browse.png
    Graphic Preview Type PNG
    Licence Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
    Metadata Language
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2019-06-03
    Temporal Extent End 2019-06-03

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