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Grady Mann outline of the Prairie Pothole Region (PPR). This delineation is based on a map on page 2 from Mann, G. E. 1974. The Prairie Pothole Region - a zone of environmental opportunity. Naturalist 25(4):2-7.
This layer represents land cover classes mapped within the Modoc Wildlife Refuge. Mapping was completed using a combination of field data, object-based image analysis using Feature Analyst, and photo interpretation. Source data included 2005 CIR NAIP digital aerial photography, and Modoc National Wildlife Refuge data layers. Field data was collected by USFWS staff in May and June of 2007.
The information contained in these files is a general characterization of the area depicted and is intended only for informational purposes. Data are based on visual onsite observations and/or photographs and not from professional land surveys and shall not be construed as applicable to, or used for, precise property boundary determinations and/or land ownership purposes. Although a reasonable attempt was made to provide factual information, due to a myriad of factors, no guarantee of the accuracy of the content, usability or presentation of the data can be or is made. Neither the State of Oklahoma nor any agency or division thereof, nor any of their agents, employees, contractors, or subcontractors, make any...

    map background search result map search result map Geology of Montana -1:500,000 scale gmannppr Oklahoma WMAs Land Cover, Modoc National Wildlife Refuge Land Cover, Modoc National Wildlife Refuge Oklahoma WMAs Geology of Montana -1:500,000 scale gmannppr