{ "culture": "en-US", "name": "AerialImage_GrandForks_2025", "guid": "", "catalogPath": "", "snippet": "Aerial imagery was acquired over the Grand Forks/East Grand Forks area April 20, 2025 and May 3, 2025. Pixel resolution is 3-inch.", "description": "

Ayres Associates provided the Grand Forks \u2013 East Grand Forks Metropolitan Planning Organization with digital, color orthoimagery services in 2025. The aerial imagery was collected on April 20th and May 3rd using an UltraCam Osprey 4.1 sensor mounted in a fixed-wing aircraft equipped with Inertial Measurment Unit (IMU) and Airborne GPS. Aerial imagery was collected to support 0.25 foot ground sample distance (GSD) orthoimagery to meet the National Mapping Accuracy Standard (NMAS) for 1\"=50' scale mapping. The horizontal accuracy meets or exceeds NMAS requirements, stating that 90% of all test points be within 1/30th of an inch at mapping scale. Resultant orthoimagery was rectified to a DEM surface created from existing LiDAR data. Orthoimagery was delivered in PLSS quarter section GeoTIFF, ECW, and MrSID tiles and a project-wide ECW and MrSID mosaic. Additional Information: The Grand Forks \u2013 East Grand Forks Metropolitan Planning Organization is a certified planning entity in the State of North Dakota and Minnesota and is comprised of the cities of Grand Forks and East Grand Forks. The purpose of the MPO is to provide a forum for public officials, citizens, and other interested groups to establish policies and plans for effectively addressing various metropolitan transportation issues. The MPO has a planning process that supports metropolitan community development and social goals. These plans and programs shall lead to the development of an integrated, inter-modal metropolitan transportation system that facilitates the efficient, economic movement of people and goods.<\/span><\/p>

This data covers the entirety of the 2025 Grand Forks \u2013 East Grand Forks Metropolitan Planning Organization Orthophotography Initiative. Photo positioning was obtained through the use of Inertial Measurement Unit (IMU), Airborne Global Positioning System (ABGPS) and ground-based GPS technology. The imagery was collected using an UltraCam Osprey 4.1 sensor at 7.25cm GSD. Imagery was captured in the absence of haze, fog, smoke, snow, ice, and dust, while streams were within the normal confines of their banks, and while clouds or cloud shadows were limited to 5% of the area of any one image; Image quality was verified during the post flight review phase. A rigorous Aerotriangulation process was performed and supplemented by the ground control. The triangulated strips were rectified using a DEM created from existing LiDAR data. The imagery was mosiacked using manual seamline generation and tone/color balanced to a project-wide consistency. PLSS quarter section RGBI tiles were extracted from the mosiac and each individual tile was reviewed for artifacts and anomalies and adjusted as part of quality control procedures. The images were reviewed for rectification problems such as bridge displacements and seamline issues caused by the underlying digital elevation model. When necessary, local corrections to the imagery were performed to minimize such effects. Images were color corrected to match adjacent flight lines. The resulting imagery was tonally adjusted in terms of contrast and color to form a radiometrically consistent orthophoto mosaic.<\/span><\/p><\/div><\/div><\/div>", "summary": "Aerial imagery was acquired over the Grand Forks/East Grand Forks area April 20, 2025 and May 3, 2025. Pixel resolution is 3-inch.", "title": "AerialImage_GrandForks_2025", "tags": [ "North Dakota", "ND", "aerial photography", "Grand Forks", "imagery", "aerial", "photo", "imageryBaseMapsEarthCover" ], "type": "Image Service", "typeKeywords": [ "ArcGIS Server", "Data", "Image Service", "Service" ], "thumbnail": "thumbnail/thumbnail.png", "url": "http://itdgisags6.nd.gov:6080/arcgis/admin", "minScale": 1.66995595777112E7, "maxScale": 4077.04091252714, "spatialReference": "NAD_1983_2011_North_Dakota_North_ft", "accessInformation": "Grand Forks/East Grand Forks Metropolitan Planning Organization (MPO)", "licenseInfo": "

Not to be used for purposes other than those strictly outlined in the 2025 Grand Forks - East Grand Forks MPO Orthophotography Initiative. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations. Acknowledgement of the organization providing these data to the public would be appreciated for products derived from these data<\/span><\/p>

Neither the MPO of GrandForks/East Grand Forks nor any of its officials and employees makes any warrant of any kind for this information, express or implied, including but not limited to any warranties of merchantability or fitness for a particular purpose, nor shall the distribution of the information constitute any warranty. The information on this site is made in part from data prepared or compiled by the GrandForks/East Grand Forks MPO. The Grand Forks/East Grand Forks MPO shall not be liable for inaccuracies or misuse of the maps or data. Information on this site is not intended to constitute advice nor is it to be used as a substitute of specific advice from a licensed professional. You should refrain from acting upon the information on this site without independently verifying the information and, as necessary, obtaining professional advice regarding your particular facts and circumstances.<\/span><\/p>

Not for navigation. The State of North Dakota has compiled this data according to conventional cartographic standards, using what is thought to be the most reliable information available. This data is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication. The State of North Dakota makes every effort to provide virus-free files but does not guarantee uncorrupted files. The State of North Dakota does not guarantee this data to be free from errors, inaccuracies, or viruses, and disclaims any responsibility or liability for interpretations or decisions based on this data. <\/span><\/p><\/div><\/div><\/div>", "portalUrl": "" }