View In:   ArcGIS Online Map Viewer

Name: NWI Wetlands

Display Field: HGM_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The National Wetland Inventory (NWI) for east-central Minnesota were updated through multi-agency collaborative effort under leadership from the Minnesota DNR. Operational support for wetland mapping and classification was provided by Ducks Unlimited and support for methods development and field validation were provided by the Remote Sensing and Geospatial Analysis Laboratory at the University of Minnesota. Major funding was provided by the Environmental and Natural Resources Trust Fund.The project area consists of 13 counties in east-central Minnesota including: Anoka, Carver, Chisago, Dakota, Goodhue, Hennepin, Isanti, Ramsey, Rice, Scott, Sherburne, Washington, and Wright Counties. The updated wetland inventory area included complete coverage for all USGS quarter quadrangles that intersect any of these counties (about 7,150 square mile).The NWI classification process for east-central Minnesota consisted of three basic steps: 1) creation of image segments (polygons), 2) RandomForest classification of the segments, and 3) photo-interpretation of the classified image segments. The updated NWI also contains a Simplified Plant Community Classification and a Simplified Hydrogemorphic Classification. Quality assurance of the data included a 100% visual inspection, automated checks for attribute validity and topologic consistency, as well as a formal accuracy assessment based on an independent field verified data set. Further details on the methods employs can be found in the technical procedures document for this project (provide URL).The updated NWI data are primarily based on aerial imagery acquired in 2010 and 2011 as well as other modern ancillary data. This data is intended to replace the original NWI data which was based on imagery acquired in the late 1970s and early 1980s. NWI data support effective wetland management, protection, and restoration. The data provide a baseline for assessing the effectiveness of wetland policies and management actions. These data are used at all levels of government, as well as by private industry and non-profit organizations for wetland regulation and management, land use and conservation planning, environmental impact assessment, and natural resource inventories.

Copyright Text: Funding for this project was provided by the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (LCCMR). The Trust Fund is a permanent fund constitutionally established by the citizens of Minnesota to assist in the protection, conservation, preservation, and enhancement of the state's air, water, land, fish, wildlife, and other natural resources. Currently 40% of net Minnesota State Lottery proceeds are dedicated to building the Trust Fund and ensuring future benefits for Minnesota's environment and natural resources. Additional funding and support was supplied by the U.S. Fish and Wildlife Service. Ducks Unlimited (DU) and the Minnesota Department of Natural Resources partnered to perform the NWI update for the east-central project area. DU had primary responsibility for developing the final updated NWI and DNR had primary responsibility overall project management and quality assurance oversight as well as providing support for data processing and field data collection. The Remote Sensing and Geospatial Analysis Laboratory at the University of Minnesota provided support for methods development and acquisition of independent field validation data.

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