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Wetland MappingThe United States Fish and Wildlife Service (USFWS) provides a digital map of the wetland resources across the nation. The National Wetlands Inventory (NWI) map along with supporting documentation can be found on the USFWS National Wetlands Inventory webpage. This map is a significant resource for preliminarily identifying wetlands as well as tracking the loss and gain of wetlands. The NWI map represents a baseline of wetland area from which researchers can compare current conditions. The NWI maps for Oklahoma are close to 30 years old and by remapping portions of the state we can see how much the extent of wetlands has changed in that time period. The USFWS remaps randomly selected plots across the country to estimate the changes in wetland area and type. Information on the status and trends of wetlands can be found at the USFWS National Wetlands Inventory Status and Trends webpage. In 2010 the Oklahoma Conservation Commission and Oklahoma State University conducted a mapping effort in the Deep Fork River watershed to assess the loss and gain of wetland resources in the region. There is a link to the final report below. Wetlands Monitoring Program Development Report Because the NWI maps in Oklahoma are approximately 30 years old, the Oklahoma Conservation Commission and Oklahoma State University have joined in a partnership to re-map areas of high wetland density across the state. These new maps should reflect current wetland acreage more accurately given the age of the original NWI maps. Updated Wetland Maps have been completed for the Pleistocene Sand Dunes Ecoregions adjacent to the North Canadian River, Cimarron River, Salt Fork of the Arkansas River and Kingfisher Creek. Wetland maps have also been updated for the Tishomingo and Little Deep Fork watersheds. Links to shapefiles for the updated maps can be found below. |