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Sub-basin/Drainage Area: Willow Creek <br />Mafor open waterways: wwow c;r. (4.t3 miles) <br />Land use: Predominately Darks/open snace_ anrirulture- and forestlanri~ snmP Inw _ marlii im riensity racirlantial <br />Kincaid's lupine NA Willow Creek Natural Area has a large population. Adjacent habitats for dispersal are good within TNC land an <br /> Other undeveloped property nearby (i.e. Eugene property to north; property being managed for wet prairie <br /> speedway property) will provide opportunity for (e.g. burning, woody vegetation removal). <br /> dis ersaf once it is restored. <br />Howell's montia NA No current populations known; potential habitat on Adjacent habitats for dispersal are limited <br /> old speedway. Should be looked for on speedway <br /> roe .Seldom found on native rairie habitat. <br />tall bugbane NA Potential habitat on upper slopes but no known Dispersal potential fairly good within south hills area; <br /> populations in Willow Creek sub-basin. although are threatened by develo)iment and increasing <br /> closed cano ies. <br />timworf West Eugene has scattered populations; located at Sometimes this species will disappear at one site and <br /> shorelines of shallow water habitats (e.g. restoration reappear at another nearby site. Dispersal opportunities <br /> sites). fairly good. Speedway property restoration will enhance <br /> dis ersal between Amazon and Willow Creek areas. <br />Birds <br />Bald eagle Y May hunt over fields and prairie areas in sub-basin. Adjacent habitat near enough for easy dispersal. <br /> Nestin sites nearb alon Fem Rid a Reservoir. <br />common nighthawk N Foraging habitat could be almost anywhere in sub- Adjacent habitat near enough for easy dispersal. <br /> basin <br />olive sided flycatcher N Habitat exists in headwater portions of Willow Creek. Adjacent habitat near enough for easy dispersal. <br />pileated woodpecker Y Habitat exists in headwater portions of Willow Creek. Adjacent habitat near enough for easy dispersal. <br />little willow flycatcher N Habitat along riparian areas and wetlands with Adjacent habitat near enough for easy dispersal. <br /> willows and other shrubs. <br />American peregrine Y/N Sub-basin lacks suitable nesting habitat. Adjacent habitat near enough for easy dispersal. <br />falcon <br />yellow-breasted chat N Habitat along riparian areas and wetlands with Adjacent habitat near enough for easy dispersal. <br /> thickets es eciall blackber and shrubs. <br />Oregon vesper sparrow N Potential habitat in Willow Creek Natural Area and Adjacent habitat near enough for easy dispersal. <br /> other o ens aces. <br />western bluebird Y Potential habitat in Willow Creek Natural Area and Adjacent habitat near enough for easy dispersal. <br /> other o ens aces. <br />western meadowlark N Potential habitat in Willow Creek Natural Area and Adjacent habitat near enough for easy dispersal. <br /> other o ens aces. <br />' Y yes, N= no, u= downstream, NA=not applicable, Y/N= some individuals migrate/others ovenvinte <br />ZPermanent resident refers to species that do not migrate out of the area at any point during their life cycle <br />Hydrology <br />Impervious surfaces cover only a small portion of this sub-basin. The basin is about ?J3 forested and 1/3 open forest or meadow/prairie. Some <br />stream channel modification has occurred, primarily bank stabilization in agricultural or transportation areas. No known stream flow data exist in this <br />sub-basin, although in summer the lower segment of Willow Creek has low to no flow (typically the lower segment of the Creek is a series of isolated <br />pools). <br />Water Quality <br />Water quality issues include low summertime dissolved oxygen, high water temperature, high total phosphorus, high levels oft='. soli and total <br />dissolved solids. Willow Creek is not listed on the 303(d) list. <br />Water Quantity <br />No instream water rights; no known stream flow data <br />Soils <br />About 2/3 of the sub-basin contains highly erodible soils according to Soil Conservation Service model. Low gradienUelevation areas within this sub- <br />basin contain hydrfc soils <br />Riparian Conditions <br />Riparian conditions have changed somewhat from pre-settlement conditions. Changes include loss of native vegetation, especially wet prairie and <br />savanna species and some rip-rap for bank stabilization. Overall riparian conditions are fairly good in this sub-basin when compared to other sub- <br />basinswithin the City. <br />Wetland Conditions <br />A significant natural resource issue in this area is the loss of Willamette Valley wet prairie. There are several listed plant species that rely on this <br />habitat type. Some of the best remaining remnants of Willamette Valley wet prairie (in the entire Willamette Valley) exist near the lower portions of <br />Willow Creek. <br />