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Pinyon <br /> Table 3-2 Summary of Non-Wetland Waters Delineated in the Study Area <br /> 7Arkansaser 38.2633830 -104.4738140 Riverine 30.88 <br /> River 38.2639000 -104.4674620 Riverine 0.25 <br /> Excelsior Ditch 38.2680150 -104.4845640 Ditch 2.15 <br /> Abandoned Channel of 38.2665860 -104.4633090 Riverine 6.20 <br /> the Arkansas River <br /> Thunderbird Lake 38.2610300 -104.4928990 Lake 3.88 <br /> Unnamed Pond 1 38.2621760 -104.4897370 Pond 0.66 <br /> Unnamed Pond 2 38.2620690 -104.490891° Pond 0.09 <br /> 'Approximate central location in World Geodetic System of 1984 (WGS84) Decimal Degrees <br /> 3.4.1.1 Arkansas River <br /> The Arkansas River is a perennial water feature represented as solid blue line on the USGS Devine, Colorado <br /> 7.5-minute quadrangle (Figure 1; Appendix A, Photo 3; USGS, 2019). Hydrophytic vegetation was noted along <br /> the river and in the floodplain (see Section 3.4.2.1 Arkansas River Wetland Complex for a description of the <br /> wetlands).The river flows to the east through the study area. Substrate within the river was primarily sand and <br /> unconsolidated silt material. In the western portion of the study area, the riverbank was lined with concrete <br /> rubble. In the eastern portion of the study area, the soil of the riverbank was comprised of sandy loam and is <br /> mapped as Bankard sand, 0 to 2 percent slopes, frequently flooded (USDA, 2019). Within the study area, the <br /> river width was approximately 250 feet. Water depth may vary depending on location and time of year. An <br /> OHWM was mapped along the river edge (Figure 2). <br /> 3.4.1.2 Saint Charles River <br /> The Saint Charles River is a perennial water feature represented as a solid blue line on the USGS Devine, <br /> Colorado 7.5-minute quadrangle (Figure 1; USGS,2019). Hydrophytic vegetation was noted along the river and <br /> in the floodplain (see Section 3.4.2.1 Arkansas River Wetland Complex for a description of the wetlands). The <br /> river flows to the east through the study area and flows into the Arkansas River immediately east of the study <br /> area. Substrate within the river is unknown as the biologists did not have access to this area during the site <br /> visit. The soil of the riverbank is mapped as Glen berg-Haversid complex, 0 to 2 percent slopes, occasionally <br /> flooded (USDA, 2019). Within the study area, the river width was approximately 25 feet. Depths may vary <br /> depending on location and time of year.An OHWM was mapped along the river edge based on aerial imagery <br /> (Figures 2f and 2g). <br /> 3.4.1.3 Excelsior Ditch <br /> Excelsior Ditch is represented as a solid blue line on the 2019 USGS Devine, Colorado 7.5-minute quadrangle <br /> and a dashed blue line on the 1960 USGS Devine, Colorado 7.5-minute quadrangle (Figure 1; Appendix A, <br /> Photo 4; USGS, 2019; USGS, 1960). Hydrophytic vegetation was noted in patches along the fringe (see Section <br /> 3.4.2.2 Excelsior Ditch for a description of the wetlands). The ditch flows to the east through the study area. <br /> Substrate within the ditch was generally comprised of sand and small rock/cobble intermixed. The soil of the <br /> bank of the ditch was comprised of sandy clay and is mapped as Las Animas fine sandy loam, 0 to 2 percent <br /> slopes, frequently flooded (USDA, 2019).Within the study area,the average width was approximately 18 feet. <br /> An OHWM was mapped along the ditch edge (Figure 2). Per aerial imagery, Excelsior Ditch is fed by the <br /> Biological Resources Report <br /> Thunderbird Property <br /> Pueblo County, Colorado Page 7 <br />