But in its southwest corner, water runoff from nearby farms has created what is probably the largest marsh in the Mojave Desert. This oasis attracts resident wildlife and thousands of migratory waterfowl, shorebirds and wading birds, making this a prime birdwatching spot. The wildlife viewing area also offers sweeping vistas of Fremont Peak, Black Mountain, gravel hills and fossil beds, as well as Harper Dry Lake. The Bureau of Land Management is currently working with a local solar power company to ensure a future source of the water for Harper lakes plants and wildlife, independent of farm runoff. The BLM is also working with Edwards Air Force Base to consolidate public lands in the area, to keep future development safely away from wildlife habitat and from the flight area.
Wildlife watching at Harper Lake most often means bird watching.
More than 250 types of birds have been reported in this area. Other birds of prey include bald eagles, golden eagles, Swainson's hawks and northern harrier - more than 16 birds of prey species have been spotted on a single day. Numerous wading birds including egrets and ibises can be seen year-round. Yuma clapper rails breed among the wetland vegetation. Viewing tips for this area Best times for bird watching are early morning and late afternoon.