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ERC Peak Ranch Resource <br /> Aquatic Resource Delineation Report <br /> FLOW(from culvert) <br /> Photo S. Overview north of the southeastern boundary of Aquatic Photo 6. Overview east from the western boundary of Aquatic <br /> Resource A where it begins from a culvert under Highway 9.The ditch Resource A(boundary depicted in blue).The vegetation community <br /> that forms much of the eastern boundary can be seen at the right of was very similar in this area,therefore the wetland/upland boundary <br /> photo(boundary depicted in blue). was determined based on hydric soils.Wetland data point DP-A6a and <br /> paired upland data point DP-A6b shown above. <br /> AQUATIC RESOURCE BR (1.01 ACRES, 1,675 LINEAR FEET) <br /> Aquatic Resource BR comprises the main channel of the Blue River, defined by OHWM and the associated <br /> 5-10 feet wide PSS riparian fringe extending landward from the OHWM.Aquatic Resource BR was mapped <br /> as occurring within the survey area in three separate areas identified as BR1, BR2, and BR3 for a total of <br /> 1,675 linear feet. The main channel of Blue River through this area is approximately 50 feet wide with <br /> varying depths. The stream channel itself is unvegetated within the OHWM and mainly comprises larger <br /> boulder and cobble material. Vegetation within the PSS riparian fringe is dominated by midstory shrub <br /> species such as speckled alder (Alnus incana), Drummond's willow (Salix drummondiona), geyer willow <br /> (Salix geyeriana), and an herbaceous understory dominated by reed canary grass (Phaloris arundinaceo), <br /> black bent(Agrostis gigonteo),dagger-leaf rush(Juncus ensifolius),and sedges(Carexspp.).Soils/substrate <br /> within the riparian fringe comprise boulders, cobbles, and gravels near the active channel, and moving <br /> landward mostly coarse sands and gravels. Some areas with dense herbaceous understory exhibit a dark <br /> organic layer at the surface, but soils through the riparian fringe are shallow and sandy with no hydric soil <br /> indicators observed. Generally, the Blue River corridor along the southern portion of the western <br /> boundary of the survey area is deeply entrenched with a much narrower riparian fringe. Moving north <br /> the river becomes wider and shallower with a wider riparian fringe and more established midstory shrub <br /> and herbaceous understory vegetation. Hydrology within the riparian fringe appears to be solely <br /> supported by flows from the Blue River during periods of high flows and/or capillary fringe. <br /> Aquatic Resource BR comprises a total of 1.01 acres and/or 1,675 linear feet within the survey area. Refer <br /> to Photos 7-10 below for characteristics of Aquatic Resource BR. <br /> 1/20/21 8 <br />