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High-resolution true color aerial imagery was collected for use as a raster base image for coastal mapping projects and the development of new raster and vector data sets in support of mapping eelgrass on the coast of Maine.
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| summary:
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High-resolution true color aerial imagery was collected for use as a raster base image for coastal mapping projects and the development of new raster and vector data sets in support of mapping eelgrass on the coast of Maine.
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| accessInformation:
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Orthophotos were produced for the State of Maine Department of Environmental Protection. James W. Sewall was the primary contractor and Bluesky Geospatial the subcontractor for aerial imagery acquisition and orthophoto production. |
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18018.52238500942 |
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["ArcGIS Server","Data","Image Service","Service"] |
| description:
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<p><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>This dataset consists of true color aerial imagery covering the coastline and islands of the greater Acadia region, from Brooklin, ME to Jonesport, ME. Imagery was captured at 15-cm GSD resolution and used to produce 6” orthorectified imagery with one-foot horizontal accuracy. Imagery collection dates were 06/26/2025, 06/27/2025, 07/26/2026, 07/27/2025, 08/12/2025, and 08/13/2025 during low tide conditions within two hours of spring tides. Additional atmospheric considerations were complied with including sun angle between 25 degrees and 50 degrees, no more than 10% cloud cover, and less than 10 knots of a maximum predicted wind velocity. Additionally, flights were only dispatched after a precipitation-free period of at least 48 hours. The project flight plan consisted of approximately 2,670 images on 20 flight lines with 80% endlap and 30% sidelap, with sections re-collected as needed to meet image quality standards. Airborne GPS and IMU were utilized during the acquisition to improve the aerotriangulation solution. Raw imagery was acquired using the Vexcel Eagle 80-mm Mark 3 mounted on a fixed wing aircraft and flown at an elevation of approximately 9,500 feet. Digital ortho-rectified imagery was created using the raw digital aerial imagery, surveyed ground control points, aerotriangulation, and a digital elevation model. These aerial survey products were created under contract for the State of Maine Department of Environmental Protection. Bluesky Geospatial, subcontractor, captured the raw aerial imagery and produced the digital orthophotos and related products, while James W. Sewall, contractor, provided ground control and verified that project specifications were met.</span></p> |
| licenseInfo:
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<div style='-webkit-text-stroke-width:0px;color:rgb(0, 0, 0);font-family:monospace;font-size:13px;font-style:normal;font-variant-caps:normal;font-variant-ligatures:normal;font-weight:400;letter-spacing:normal;orphans:2;text-align:start;text-decoration-color:initial;text-decoration-style:initial;text-decoration-thickness:initial;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;'>The State of Maine Department of Environmental Protection (DEP) makes this information available to enhance public knowledge and promote education. The State of Maine DEP also retains the right to make changes to the data without prior notice. Neither the State of Maine DEP, nor any of its employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, nor represent that its use would not infringe on privately owned rights. The data are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete, and it should not be used for navigational purposes. The State of Maine DEP assumes no liability, any damages or loss of any kind that might arise from the use of, misuse of, or the inability to use these data. The State of Maine DEP assumes no liability for any damages or loss of any kind caused by any errors or omissions in the data. All data are distributed "as is," without warranties of any kind, either express or implied, and subject to the terms and conditions stated in this disclaimer</div> |
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| title:
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Maine Orthoimagery Coastal Acadia 2025 |
| type:
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Image Service |
| url:
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https://gis.maine.gov/image |
| tags:
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["Maine_Orthoimagery_Coastal_Acadia_2025","ImageServer"] |
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en-US |
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| name:
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Maine_Orthoimagery_Coastal_Acadia_2025 |
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| minScale:
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3.690193384449929E7 |
| spatialReference:
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NAD_1983_UTM_Zone_19N |