We conducted field surveys for willow flycatchers (Empidonax traillii) in 1997 and 1998, from June 6 through July 15, within the McCloud Flats in Siskiyou County, California. We used Landsat Thematic imagery to predict known and potentially suitable habitat for willow flycatchers. Vegetation classes that occurred in areas occupied by singing male willow flycatchers (territories) were used to train the imagery to identify potentially suitable habitat. National Wetland Inventory data and Digital Elevation Models were used as additional variables to identify potentially suitable sites. Seventy-seven willow flycatcher territories were found during surveys in 1997 and 1998. Habitat data was collected on .07 ha circular plots centered on 66 territories located in 1997 to characterize habitat at the sites in the McCloud Flats. Riparian thickets taller than 2 m were the most abundant vegetation type, making up 53 percent of the vegetation within the plots. Twenty-one percent of the vegetation was a composite of live grass spp. intermixed with forb spp. Most (94%) of the territories were located within riparian wet meadow systems, characterized by patchy clumps of riparian thickets (predominantly willow spp.) and were associated with active streams flowing along slope gradients of 5º or less. The remaining territories (6%) were found in a large wet meadow system (Bigelow Meadows), with patchy clumps of willows, saturated soils, along slope gradients of 5º or less, and were not directly associated with an active stream. A habitat predictability model was developed using (1) vegetation classes occurring within willow flycatcher habitat, (2) association of habitat to streams, (3) stream gradients, (4) landscape gradients, and (5) distribution of vegetation classes. Known locations of singing males from other areas in northeastern California were used to test the predictability of the model. We concluded that Landsat Thematic imagery, when applied in conjunction with other landscape data, is an effective way to identify willow flycatcher habitat over large landscapes.