Consult local DNR and county zoning offices for necessary permits. On Surface Water Data Viewer, click on "show layers" in the menu in the upper left This interactive map theme available through the DNR Surface Water Data Viewer shows wetlands and potential wetlands. The Lower Wisconsin Riverway is now recognized as a Wetland of International Importance by the United States and the Ramsar Convention on Wetlands. As of December 1, 2020, the WWCT has allocated $18 million to 14 different mitigation projects and has completed over 500 acres of construction across 9 sites. 9 For these nonfederal wetlands, the DNR became the permit-issuing authority and issued approvals based on … The wetland temporarily holds runoff (reducing flooding downstream), and filters sediment, nutrients and chemicals before the water recharges groundwater. Much of this remaining wetland acreage was at one time disturbed, either by drainage (followed by restoration) or by being cleared, repeatedly burned, grazed or periodically plowed (Curtis 1959). These wetlands will still require permits from the Wisconsin DNR and the U.S. Army Corps of Engineers. The Wisconsin Department of Natural Resources (DNR) regulates all “Waters of the State”. Water quality is often dependent upon wetlands because they serve to trap sediment, remove nutrients, protect shorelines and slow the effects of flood water. In Wisconsin, 32% of the state's listed species are wetland dependent. In part due to these functions, wetlands exhibit higher biological productivity than most other community types, and support rare biota. The DNR defines an artificial wetland as a landscape feature where hydrophytic vegetation may be present as a result of human modifications to the landscape or hydrology and for which the department has no definitive evidence showing a prior wetland or stream history existed before August 1, 1991, but does not include any wetland area that serves as a fish spawning area or a passage to a fish spawning … Currently, 43% of all federally-listed threatened and endangered species use wetlands at some point in their life cycles (Feierabend 1992). The program sells wetland credits to permittees needing to offset authorized wetland impacts. Welcome to the Surface Water Data Viewer (SWDV), a Wisconsin DNR data delivery system that provides interactive web mapping tools for a wide variety of datasets including chemistry (water, sediment), physical, and biological (macroinvertebrate and fish) data. Many of the remaining 5.3 million acres are in the northern third of the state (Wisconsin DNR 1990). At present, Wisconsin has lost 47% of its original ten million acres of wetlands. Mitigate permitted wetland impacts with WWCT credits. Further loss or degradation of wetlands would affect a disproportionate share of Wisconsin's rare species. 4 Boon Blvd. The wetland data were developed using the best available remote sensing data including high-resolution aerial imagery and lidar-based elevation models. Wetland Reserve Easements Fiscal year 2021 signup deadline is February 5, 2021. Groundwater recharge and discharge:Some wetlands recharge groundwater by holding surface water and allowing it to slowly filter into the groundwater reserves. Call 1-888-936-7463 (TTY Access via relay - 711) from 7 a.m. to 10 p.m. Wisconsin's endangered and threatened species list, Complete Ecological Landscapes of Wisconsin natural community descriptions. At present, Wisconsin has lost 47% of its original ten million acres of wetlands. Reversing the Loss: A Strategy for Protecting and Restoring Wetlands in Wisconsin, Wisconsin DNR Publication FH-232-2000, (PDF, K) was completed in December 2000. A wetland is defined in the Wisconsin Statutes as "an area where water is at, near, or above the land surface long enough to be capable of supporting aquatic or hydrophytic vegetation and which has soils indicative of wet conditions.". Phone: (715)743-3164 . Wetlands form where the shape of the land is conducive to retaining water, including flat areas or depressions with limited outflow, where groundwater is present at the land surface and in floodplains with water flow-through. The placement of material in low areas or wetlands is a regulated activity for which authorizations through permits or exemptions may be required. Wisconsin Wetland Inventory (WWI) – Order Form The map shows wetlands that have been officially mapped through the Wisconsin Wetland Inventory process and areas that may be wetlands based on their soil types. Disturbance and other factors have opened many wetlands to invasion by non-native invasive species that can reduce the ecological value of wetlands. Wetland conservation, management, and research in Wisconsin are predicated on an understanding of the different types of wetlands that occur in the state. You can obtain map copies or learn more about the Wisconsin Wetland Inventory through the following links. These rules are meant to encourage and facilitate ecologically sound wetland restoration through a streamlined permitting process. 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