and mechanically drained to create arable
farmland.Historically, the banks of the
Illinois River were lined with shallow lakes and wetlands, through which a broad shallow river flowed in a slow, braided course. The broad, bluff-lined river basin was rich in fish, shellfish, waterfowl, and peltry, exploited by
Native Americans and by 1800s pioneers. The Hennepin area was so rich in wetland productivity that the New York City-based
American Fur Company operated a fur-trading post here in the 1810s. Illinois pioneer
Gurdon Saltonstall Hubbard traded for furs on the banks of Hennepin Lake in 1818-1819. In the early decades of the 1900s, the invention of the
steam shovel seemed to make it possible to commoditize and exploit much of the river lowlands, including Hennepin Lake and Hopper Lake. In 1908, local landowners formed the
Hennepin Drainage and Levee District. Financial institutions lent money for levees, ditches, tile lines, and drainage pumps. With recurring crop surpluses in the closing years of the 20th century, many of the Illinois River drainage districts came to be seen as mistakes. In some cases, including the Hennepin Drainage and Levee District, landowners found the ongoing cost of maintaining and repairing the levee as well as the energy cost of the necessary pumping difficult to support from farming receipts. In 2000 eight farm families agreed to sell most of the Hennepin drainage district to a young not-for-profit conservation organization,
The Wetlands Initiative. In 2001 the organization turned off the pump, began plugging or removing agricultural drainage tiles, and initiated various types of restoration work. A complex pattern of wet meadows, wet and dry prairies, marshes, and small waterbodies emerged in addition to the historic backwater lakes. The parcel, of which 283 acres will be kept as a permanent addition and restored to a mix of habitats, includes the primary groundwater drainage zone into the Refuge's
Thomas W. and Elizabeth Moews Dore Seep, a 26-acre dedicated
Illinois Nature Preserve located near the site's southern end. ==Honors==