Laserfiche WebLink
ERC Peak Ranch Resource <br /> Aquatic Resource Delineation Report <br /> Table 1. Summary of Aquatic Resources Delineated within the Survey Area. <br /> Aquatic Classification <br /> Resource ID 'Cowardin Location(lat/long) Acres Linear <br /> Name Feet <br /> BR1 R3/PSS(Blue River) 39.777788°N,-106.159031°W 0.72 835 <br /> BR BR2 R3/PSS (Blue River) 39.7753670N,-106.157775°W 0.13 228 <br /> BR3 R3/PSS (Blue River) 39.772800°N,-106.157037°W 0.16 612 <br /> Subtotal 1.01 1,675 <br /> A A PEM 39.776464°N,-106.158611°W 6.68 <br /> ID ID Ditch 39.777899°N,-106.158808°W 0.20 641 <br /> • <br /> Notes: <br /> 1 Habitat Type based on Cowardin et al.1979. <br /> A total of 7.89 acres of aquatic resources and 2,316 linear feet of stream channel (including 641 linear feet <br /> of man-made irrigation ditch)were delineated by ERC within the survey area.A description of the aquatic <br /> resource habitat types is provided as follows. Refer to Table 2 for a list of vegetation identified within the <br /> survey area.The Aquatic Resource Delineation Map dated September 7, 2018 is provided in Appendix A. <br /> AQUATIC RESOURCE A (6.68 ACRES) <br /> Aquatic Resource A comprises PEM wet meadow habitat situated within the northeast portion of the <br /> survey area.The boundary of Aquatic Resource A was determined largely based on the presence of hydric <br /> soils. The vegetation community throughout the northeast portion of the survey area is very similar <br /> exhibiting a dominance of species ranging from OBL-FAC, especially in areas surrounding the south and <br /> west delineated boundaries of Aquatic Resource A.Therefore, hydric soils were the most useful indicator <br /> in determining the wetland/upland boundary of Aquatic Resource A. It appears that this area has been <br /> historically influenced by flood irrigation practices, as discontinuous man-made ditch segments were <br /> observed throughout Aquatic Resource A. In addition, the eastern boundary of Aquatic Resource A is <br /> formed by a ditch along the west side of Highway 9 that was likely originally built for surface water runoff <br /> from Highway 9 and surrounding upslope areas. Two culverts were observed that outlet into Aquatic <br /> Resource A from the east side of Highway 9,the culvert outlets on the west side of Highway 9 are where <br /> the ditch originates. Hydrology within Aquatic Resource A is likely supported by surface water runoff from <br /> surrounding upslope areas, seasonal hydrology from snowmelt, and possible seepage from the ditch that <br /> forms the eastern boundary during high flows. <br /> The vegetation community within Aquatic Resource A is dominated by species such as field meadow-foxtail <br /> (Alopecurus pratensis),Baltic rush(Juncus balticus),Canadian thistle(Cirsium arvense),leafy tussock sedge <br /> (Carex aquatilis), small-wing sedge (Carex microptera), and annual blue grass (Poo annua).The dominant <br /> vegetation within the wetland areas consists of hydrophytic species (OBL-FAC). <br /> Soils within the wetland areas are either silt loam or silty clay loam textured meeting the criteria for the <br /> hydric soil indicator F6 (Redox Dark Surface) and/or F3 (Depleted Matrix). At the time of the delineation, <br /> primary wetland hydrology indicator of C3 (Oxidized Rhizospheres along Living Roots) was observed <br /> 1/20/21 6 <br />