Laserfiche WebLink
<br />001793 <br /> <br />INTRODUCTION <br /> <br />1- <br />~1 <br /> <br />Purpose and Scope <br /> <br />This document provides a report on the evaluations and findings of a <br />reconnaissance study for the Rio Grande Levee System at Alamosa. The <br />study has been undertaken by Muller Engineering Company, Inc. (MEC) <br />under contract with the City of Alamosa and Alamosa County, and with <br />the coordination of the Colorado Water Conservation Board (CWCB). <br /> <br />Following the flooding experienced by the community in mid-June, 1985, <br />the need was foreseen to investigate the adequacy of the exi st i ng <br />levee system in and around the City. During the flood peak in June, <br />1985, the levee system was significantly eroded in certain areas and <br />threatened to fail in others. <br /> <br />Emergency assistance was provided by the Colorado Division of Disaster <br />Emergency Services (DODES) and expertise and guidance was also <br />provided by the Corps of Engineers, Albuquerque District (COE), Pueblo <br />Area Office. Many other governmental agencies and divisions were also <br />assisting the community in their flood fight effort. Through the <br />month of October, emergency monies have been used to clear the river <br />channel of vegetation and also to move years of accumulated river <br />sediment from the floodway area. <br /> <br />The purpose of this study was to perform a reconnaissance level <br />evaluation of future flood characteristics, identify the condition of <br />existing levees and other flood control facilities, and identify <br />possible improvements to reduce the risk of future flooding along the <br />Rio Grande through the City and the immediate surrounding areas of <br />Alamosa County. <br /> <br />~ <br /> <br />! <br /> <br />The study area extends from generally River Mile 47.6, downstream of <br />the Denver and Ri 0 Grande Western Rail road (D&RGWRR) bri dge on the <br />southeast side of town, to approxi mate ly Ri ver Mi 1 e 50.8 near the <br />northerly corporate limit of the City of Alamosa. <br /> <br />The study includes the following workscope: <br /> <br />, <br />L <br /> <br />. Visit the site to become familiar with the current <br />conditions of the levee system and the community. <br /> <br />.' <br /> <br />. Identify and record the flood history and hydrology of <br />the area. <br /> <br />b <br />r <br /> <br />. Prepare an estimate of the potential flood damages and <br />determine the average annual cost of flood damages. <br /> <br />;-. <br /> <br />. Prepare a hydraulic analysis of the Rio Grande to <br />determine anticipated flood profiles. <br /> <br />-1- <br />