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Orthomosaic imagery for the intertidal zone at Post Point, Bellingham Bay, WA, 2019-06-06


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Logan, J.B., Grossman, E.E., VanArendonk, N.R., and Maverick, A.F.G., 2021, Aerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Post Point, Bellingham Bay, WA, June 2019: U.S. Geological Survey data release,


This portion of the data release presents a high-resolution orthomosaic images of the intertidal zone at Post Point, Bellingham Bay, WA. The orthomosaics were derived from structure-from-motion (SfM) processing of aerial imagery collected with an unmanned aerial system (UAS) on 2019-06-06. The orthomosaics are presented with two resolutions: one image, covering the entire survey area, has a resolution of 2 centimeters per pixel; the other image which was derived from a lower-altitude flight, covers an inset area within the main survey area and has a resolution of 1 centimeter per pixel. The raw imagery used to create the orthomosaics was acquired using a UAS fitted with a Ricoh GR II digital camera featuring a global shutter. The UAS [...]


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PostPoint_2019-06-06_orthomosaic_2cm.tif 141.4 MB image/geotiff
PostPoint_2019-06-06_orthomosaic_1cm.tif 195.71 MB image/geotiff
“Orthomosaic image from UAS survey of Post Point, Bellingham Bay, WA”
thumbnail 182.29 KB image/jpeg


These data were collected to characterize the morphology, substrate composition and roughness of intertidal areas to support modeling of coastal storm and wave impacts with sea-level rise as part of the USGS Puget Sound Coastal Storm Modeling System (PS-CoSMoS). The data are also intended to be used to model and evaluate sediment transport and its effects on coastal habitats, a focus of the USGS Coastal Habitats in Puget Sound Project (CHIPS) and its partners to inform resource management and adaptive planning for our Nation's coasts. The orthomosaic images can be used with geographic information systems (GIS) software for research purposes.

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