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The US Congress established the refuge in 1935 to preserve wildlife habitat and breeding grounds. [2] The Sand Lake National Wildlife Refuge is located in northeastern South Dakota, and covers 21,498 acres (8,700 ha) of wildlife habitat. It is part of the National Wildlife Refuge System, which covers over 550 such refuges in the US.
This list of Ramsar sites in the United States are those wetlands that are considered to be of international importance, protected under the Ramsar Convention treaty. The United States as of 2020, has 41 sites designated as "Wetlands of International Importance" with a surface area of 1,884,551 hectares (7,276.29 sq mi; 18,845.51 km 2).
Sand Lake Wetland Management District is located in the U.S. state of South Dakota and is administered by the U.S. Fish and Wildlife Service.This is the largest Wetland Management District in the U.S., with 45,000 acres (182 km 2) of area directly under federal protection and another 550,000 acres (2,225 km 2) managed in partnership with private landowners as conservation easements.
Shell Lake National Wildlife Refuge (Managed by the Lostwood Wetland Management District Complex) Mountrail County: ND 1939 [392] 1,835 acres (7.43 km 2) [393] Sibley Lake National Wildlife Refuge: Griggs County: ND 1,077 acres (4.36 km 2) Easement on private land [394] Silver Lake National Wildlife Refuge: Benson County: ND 1938 398.76 acres ...
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Lake Andes National Wildlife Refuge is located in the U.S. state of South Dakota and includes 5,638 acres (22.81 km 2). The refuge is managed by the U.S. Fish and Wildlife Service and is part of the Lake Andes National Wildlife Refuge Complex .
Madison Wetland Management District is located in the U.S. state of South Dakota and includes 129,700 acres (524 km 2). 38,500 acres (155 km 2) is owned by the U.S. Government while the remaining area is protected through easements in agreement with the state and other entities.
Crescent Lake National Wildlife Refuge is located in the U.S. state of Nebraska and includes 45,818 acres (185 km 2). The refuge contains the largest protected continuous sand dunes in the U.S. A dozen small lakes and numerous ponds are fed by underground aquifers in areas where the sand dunes are below the water table.