Laserfiche WebLink
<br />. <br /> <br />~:'~*-~-''''.' <br /> <br />. <br /> <br />. <br /> <br />Design of Energy Dissipators for Culverts and Channels," Hydraulic Engineering Circular No. 14, <br />September 1983, and/or "Design of Small Dams," US Bureau of Reclamation, 1987. <br /> <br />(3) Hydraulic design of both Oak creek and Oak creek will be performed. <br /> <br />e. Risk and Uncertainty will be incorporated. <br /> <br />(1) The hydraulic design will be performed in accordance with EC 1105-2-205, dated 25 <br />February 1994, subject: Risk Based Analvsis for Evaluation ofHvdrologylHvdraulics and Economics <br />in Flood Damage Reduction Studies. <br /> <br />(2) The standard deviation for stage, based on conveyance, roughness, and cross-section <br />geometry, will be developed for use in the risk analysis. <br /> <br />(3) If applicable, additional guidance will be incorporated as it is issued. <br /> <br />(4) Any case studies that become available will be utilized. <br /> <br />f. Post-project flooded areas will be determined using similar procedures. <br /> <br />g. The Corps of Engineers will identify any potential interior flooding problems caused by <br />the proposed alternative and will then address them with appropriate drainage and/or ponding <br />structures. <br /> <br />h. The care of water during the construction will be analyzed in accordance with EC 110-2- <br />1405, dated 30 September 1982, subject: Hvdraulic Design for Local Protection Proiects. <br /> <br />i. The Operation, Maintenance, Repair, Replacement, and Rehabilitation (OMRR&R) <br />requirements will be identified and costs estimated. The guidance in ER 1110-2-40 I and ER 1110- <br />2-1405 will be followed to identify OMRR&R and surveillance requirements. <br /> <br />j. The Corps of Engineers will prepare a report presenting the results of the hydraulic study. <br />The report will contain a detailed description of the study methods, proposed plan, pertinent data, <br />risk and uncertainty, and assumptions made during the execution of the study. <br /> <br />2.7 HYDROLOGIC INVESTIGATIONS. The Government will perform this item in <br />coordination with the sponsor. The hydrology study performed in the fact sheet phase, previous <br />studies on the Rio Grande, and the work done by RTI will be adapted for use in the feasibility phase. <br /> <br />a. Studies will be performed in accordance with Engineer Manual 1110-2-1417, Flood <br />Runoff Analysis; Training Document 15, Hydrologic Analysis of Un gaged Watersheds Using HEC- <br />I; and Training Document II, Adoption of Flood Flow Frequency Estimates at Ungaged Locations. <br /> <br />SECTION B, PAGE 9 <br />