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<br />Insurance Studies for the City of Monte Vista and the Town of Del <br />Norte, Colorado (References 1 and 2). Additional analyses for the <br />other detailed-study areas were performed by the U.S. Soil Conser- <br />vation Service, as reported in the Flood Hazard Study for South <br />Fork, Colorado (Reference 3). This study was completed in 1985. <br /> <br />1.3 Coordination <br /> <br />In a memorandum dated May 17, 1985, the FEMA Regional Office in <br />Denver, Colorado, requested that a Flood Insurance Study be pre- <br />pared for Rio Grande County, Colorado. This study uses informa- <br />tion presented in the effective Flood Insurance Studies for the <br />incorporated areas of the City of Monte Vista and the Town of Del <br />Norte, and existing data from a Flood Hazard Study for portions of <br />the Rio Grande and South Fork Rio Grande in the vicinity of South <br />Fork, Colorado (Reference 3). A final coordination meeting review- <br />ing the findings of this study was held on May 5, 1986. <br /> <br />2.0 AREA STUDIED <br /> <br />2.1 Scope of Study <br /> <br />This Flood Insurance Study covers Rio Grande County, Colorado. <br />The area of study is shown on the Vicinity Map (Figure 1). <br /> <br />The incorporated areas of the City of Monte Vista and the Town of <br />Del Norte are included. A small portion of the City of Center, <br />Colorado, lies in Rio Grande County, but is not included in this <br />study. The Rio Grande National Forest, the Monte Vista National <br />Wildlife Refuge, and undeveloped areas, which have little or no <br />potential for future habitation, are also excluded. A specific <br />area of the Rio Grande National Forest near South Fork is included <br />where detailed flood hazard information was available. <br /> <br />The two sources of flooding in Rio Grande County are the Rio Grande <br />and South Fork Rio Grande. The Rio Grande was studied in detail <br />in the vicinity of Monte Vista, Del Norte, and South Fork. The <br />South Fork Rio Grande was studied in detail in the vicinity of <br />South Fork. <br /> <br />The areas studied by detailed methods were selected based on the <br />extent and validity of available hydrologic and hydraulic data. <br /> <br />2.2 Community Description <br /> <br />Rio Grande County, encompassing a total area of approximately 913 <br />square miles, is located in southwestern Colorado. Sagauche County <br />lies to the north, Alamosa County to the east, Conejos County to <br />the south, Archuleta County to the southwest, and Mineral County <br />to the west. The incorporated communities in Rio Grande County <br />(Monte Vista, Del Norte, and a portion of Center) have a combined <br /> <br />2 <br />