North American beaver (Castor canadensis) seem to have been making a comeback in Elko County possibly due to less fur trapping combined with reduced consumption of riparian willow and other vegetation by cattle. Maggie and Susie Creeks, which enter the Humboldt River near Carlin, have benefited from 20 years of work by ranchers, agencies, mines, and non-profit groups via improvements in grazing techniques and specific projects. A remote sensing project found 107 beaver dams along of Maggie Creek in 2006, which rose to 271 dams in 2010. Beaver dams are accelerating recovery of riparian vegetation and widening the riparian zone as they slow the water and collect sediment that used to be lost downstream. In five years, beaver ponds have increased the amount of impounded water on Maggie Creek from of stream to . The impounded water is seeping into the ground and raising the water table. Newmont's shallow groundwater monitoring wells along Maggie Creek have shown about a rise over the past 17 years along Maggie Creek. Stream flows are more perennial, making more water available for wildlife and livestock and protecting populations of native trout. Maggie Creek has a Beaver Creek tributary which flows from Beaver Peak in the Tuscarora Mountains.