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Wetlands (Bioswales /Millpond Swale): The elevation of this area varies between 408' and 420' <br />and encompasses approximately 1. 15 acres. There are at least two types of flowing water that <br />may occur on this site: bioswales that will filter stormwater collected from the site and the <br />daylighted Millpond Swale that will potentially flow through the southern section of the site. <br />The suites of species that would be used for each are quite different. Some species that would be <br />appropriately used only in and around the Millpond Swale are noted below while additional <br />species for this habitat (including trees) would be similar to those that are recommended in the <br />Riparian Zone and /or Upperbank/Midbank habitat sections of this document depending on the <br />proximity of the plantings to the water feature. <br />In terms of bioswale construction, there are generally at least two categories of plants that are <br />used in western Oregon. Species that will be in the areas of greatest inundation should be <br />tolerant of wetter conditions in winter and drier during the summer and have the ability to help <br />filter the incoming stormwater. The species located on the side slopes should be more tolerant of <br />drier conditions year round and help stabilize the banks against erosion. Below is a list of <br />potential shrubs, forbs, grasses and rushes that could be used in the wetter portions of these <br />features. When determining which species might be used on the surrounding drier side slopes of <br />this area, see the species lists for Upperbanks/Midbanks. It should be noted that plants that are <br />typically used in bioswales are generally sun - loving species. Therefore, even though it is <br />generally better if streams are shaded to help keep water temperatures at an acceptable level for <br />fish, if the bioswales are shaded, the plants that are meant to cleanse the water may not survive. <br />Shrub and small tree species could include: <br />Acer circinatum <br />Cornus sericea <br />Crataegus suksdorfi <br />Malus fusca <br />Physocarpus capitatus <br />Salix hookeriana <br />Salix lasiandra ssp. lasiandra <br />Salix sessilifolia <br />Salix sitchensis <br />Spiraea douglasii <br />Viburnum ellipticum <br />Forb and Fern species could include: <br />Alisma triviale* (in water) <br />Camassia leichtlinii <br />Delphinium trolliifolium* <br />Dicentra formosa * <br />Lupinus polyphyllus <br />Lysichiton americanum * ( in water) <br />Polystichum munitum <br />Ranunculus orthorhyncus <br />Sidalcea cusickii * <br />Sisyrinchium idahoense <br />Urtica dioica * <br />Veronica scutellata * ( in standing water) <br />Grass, rush and sedge species could include: <br />Agrostis exarata <br />Alopecurus geniculatus <br />*Millpond Swale only <br />Bromus carinatus <br />Bromus sitchensis <br />Carex densa <br />Carex hendersonii <br />Carex leptopoda <br />Carex obnupta <br />Carex stipata <br />Danthonia californica <br />Deschampsia cespitosa <br />Festuca romerii <br />Eleocharis accicularis <br />Eleocharis ovata <br />Eleocharis palustris <br />Glyceria occidentalis <br />Glyceria striata (syn. elata) <br />Hordeum brachyantherum <br />Juncus acuminatus <br />Juncus effuses ssp. pacificus (do not confuse with <br />invasive J. effusus ssp. effusus) <br />Juncus occidentalis <br />Juncus patens <br />Juncus tennis <br />Schoenoplectus acutus (in water) <br />Schoenoplectus americanus (in water) <br />Schoenoplectus tabernaemontani (in water) <br />Scirpus microcarpus <br />Scirpus validus <br />Sparganium emersum (in water) <br />20 <br />