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<br />Fish Creek Soil Investigation <br />SOIL MAPPING 8 TAXONOMY <br />Preliminary soil maps from the unpublished NRCS Soil Survey for Routt County were <br />reviewed prior to locating soil mapping unit boundaries for the study area. Field <br />descriptions from each of the 12 soil cores and additional non-characterized cores were <br />used to determine soil map unit boundaries (Maps 1 & 2) and soil taxonomy to the soil <br />series or family level. Preliminary NRCS map unit descriptions of the Slocum loam, <br />Winevad-Splitro Complex, Clayburn loam, Aaberg clay and Binco silty clay loam and <br />their known inclusions were used to determine the affected soil series (Appendix 3). As <br />with all flood plains in this area, flooding and the deposition and erosion of material <br />may be a frequent occurrence (100 year precipitation event). Frequent flooding, channel <br />movement, erosion and deposition have resulted in highly variable soil profiles within <br />the previously mapped AVF. <br />RESULTS <br />The soil description field forms and photographs for each characterized soil core are <br />contained Appendix 1 and Appendix 2 respectively. The primary soil parameters <br />including bottom depth of rooting, depth to the top of mottling and depth to surface of <br />the groundwater table are summarized in Table 1. NRCS soil series descriptions are <br />contained in Appendix 3. <br />• Soil core #1 was characterized as a Winevada and soil cores # 3 and #4 as Splitro series <br />within the Winevada-Splitro complex, 3-25 percent slopes, map unit XSD. Soil core #2 <br />was characterized as a Cumulic Cryaquoll and soil core #9 was characterized as a <br />Menbar series and both were mapped as inclusions within the Slocum loam variant, 0-5 <br />percent slopes, map unit 56A. Soil cores #5 and 6 were characterized as within the <br />Clayburn series, 3-25 percent slopes, map units 68C and 68D. Soil cores #7 and 8 were <br />mapped as a Aaberg silty clay, 25-65% slopes, map unit 35F. In Section 17, soil cores <br />#10, 11 and 12 were located within the Binco silty clay Ioam, 3-25 percent slopes, map <br />units C10 and D10. A narrow inclusion of Cumulic Cryaquoll soil was observed in the <br />small drainage channel bisecting the ventilation pad area in Section 17 (Map 2). <br />n <br />U <br />Habitat Management, Inc. 2 01/06/04 <br />