Laserfiche WebLink
<br />I <br /> <br />I <br /> <br />I <br /> <br />Table 22. Aggradation-Degradation Potentials for Fossil Creek and <br />Tributaries, Existing Conditions. <br /> <br />Table 22 (continued) <br /> <br />I <br /> <br />I <br /> <br />Reach <br />Description <br /> <br />Equilibrium <br />Slope <br />(ft/ft) <br /> <br />Potential <br />Depth of <br />Aggradation <br />(ft)l <br /> <br />Reach <br />Description <br /> <br />Equilibrium <br />Slope <br />(ft/ft) <br /> <br />Potential <br />Depth of <br />Aggradation <br />(ft)l <br /> <br />Fossil Creek; <br /> <br />Lang Gulch; <br /> <br />I <br /> <br />Reach 1 <br /> <br />I <br /> <br />Reach 2 <br /> <br />Reach 3 <br /> <br />I <br /> <br />Reach 1 <br /> <br />Taft Hill Road to Shields Street <br /> <br />0.0125 <br /> <br />Stable <br /> <br />Reach 2 <br />Reach 3 <br />Reach 4 <br />Note: <br />Reach 5 <br />Reach 6 <br />Reach 7 <br />Reach 8 <br /> <br />Shields Street to Burns Trib. <br /> <br />0.120 <br /> <br />-1.2 <br /> <br />Burns Trib. to Fossil Creek Dr. <br /> <br />0.0039 <br /> <br />-0.9 <br /> <br />Note: The lower part of Reach 3 is a pond which will actually experience <br />aggradation. <br /> <br />I <br /> <br />Reach 4 <br /> <br />Reach 5 <br /> <br />I <br /> <br />Reach 6 <br /> <br />Reach 7 <br /> <br />I <br /> <br />Reach 8 <br /> <br />Fossil Creek Dr. to Lang Gulch <br /> <br />0.0060 <br /> <br />-1.5 <br /> <br />Lang Gulch to CS RR Crossing <br /> <br />0.0029 <br /> <br />-0.5 <br /> <br />CS RR Crossing to Hwy. 287 <br /> <br />0.0057 <br /> <br />-2.5 <br /> <br />Hwy. 287 to Fossil Creek Drive <br /> <br />0.0010 <br /> <br />-0.2 <br /> <br />Fossil Creek Drive to Section 181 <br /> <br />0.0038 <br /> <br />Note: <br /> <br />2.3 <br /> <br />I <br /> <br />Note; Because of the effects of the culverts at County Roads 13 and 34, a <br />long-term equilibrium slope analysis becomes inapplicable downstream of <br />Section 181 on Fossil Creek. <br /> <br />Reach 9 <br /> <br />I <br /> <br />Above Shields street <br /> <br />0.0061 <br /> <br />-1.3 <br /> <br />Shields St. to CS RR Crossing #4 <br /> <br />0.0053 <br /> <br />-2.8 <br /> <br />CS RR #4 to CS RR Crossing #3 <br /> <br />0.0006 <br /> <br />1.5 <br /> <br />CS RR #4 to County Road 34 <br /> <br />Reach 4 is too short to adequately be described by the equilibrium <br />slope analysis. Major problems are local scour at culvert outlets. <br /> <br />county Rd. 34 to Smith Creek 0.0068 -1.8 <br />Smi th Creek to CS RR Crossing #2 0.0100 12.0 <br />CS RR #2 to Pond 0.0026 -1.8 <br />pond to CS RR #1 0.0083 -7.7 <br /> <br />The occurrence of geologic controls will limit degradation in reaches <br />7 and 8. <br /> <br />CS RR crossing #1 to Fossil Creek <br /> <br />0.0050 <br /> <br />0.4 <br /> <br />Burns Tributary: <br /> <br />Stanton Creek: <br /> <br />0.0072 <br /> <br />-12.0 <br /> <br />I <br /> <br />Reach 1 <br /> <br />Reach 2 <br /> <br />I <br /> <br />Smith Creek; <br /> <br />I <br /> <br />Reach 1 <br /> <br />Reach 2 <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Above Shields Street <br /> <br />0.0076 <br /> <br />Reach 1 <br /> <br />4.0 <br /> <br />Fossil Creek to Just Below County <br />Road 32 <br /> <br />Shields St. to Fossil Creek <br /> <br />0.0072 <br /> <br />-2.7 <br /> <br />lA negative sign indicates degradation. <br />2Degradation will be limited to a maximum of approximately 13 feet due to the <br /> <br />sloughing and failure of banks. <br /> <br />Above Shields Street <br /> <br />0.0080 <br /> <br />0.7 <br /> <br />Shields Street to Lang Gulch <br /> <br />0.0089 <br /> <br />3.1 <br /> <br />47 <br />