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TABLE OF CONTENTS (Continued) ApPENOIX Maps Flood Hazard Area Map Index Flood Hazard Area Maps, San Juan River and McCabe Creek Flood Profi les Reach 1 San Juan River Reach 2, San Juan River Reach 3 McCabe Creek Reach 4 West Fork Reach 5 North Fork Reach 6 San Juan River Typical Valley Cross Sections San Juan River Cross Section E San Juan River Cross Sectio'n CG McCabe Creek Cross Sect ion 01' West Fork Cross Section FJ North Fork Cross Section GO San Juan River Cross Section HG Tab I es Flood Frequency-Elevation and Discharge Data San Juan River Reach I and 2 McCabe Creek Reach 3 West Fork Reach 4 North Fork Reach 5 San Juan Ri ver Reach 6 Investigation, Analyses, and Technical Data Maps Surveys Elevation Reference Marks Hydrology and-Hydraulics Soi I Surveys Glossary of Terms Bibliography Numbers FLOOD HAZARD ANALYSES Sheets 1 and 2 through 9 and Supplement 2 SAN JUAN RIVER AND McCABE CREEK IN THE VICINITY OF pAGOSA SPRINGS ARCHULETA COUNTY, COLORADO through through through A-ld A-2h A-3b A-I A-2 A-3 A~4 A-5 Supplement 2 INTRODUCTION This flood hazard analyses report presents the results of a study on the Exhibit B-1 flood plain lands of the San Juan River and McCabe Creek in the vicinity of pagosa Springs, Colorado. It was prepared by the U. S. Department of Exhibit B-2 Agriculture, Soil Conservation Service, in cooperation with the Colorado Exhibit B-3 Water Conservation Board, the Upper San Juan Region Planning Commission, Archuleta County, the town of Pagosa Springs, and the San Juan Soil Conservation District. Tables 1 and 2 ,Table 3 Table 4 Table 5 Table 6 Primary purpose of this report is to provide large scale detailed mapping of the flood hazard areas. Without detailed mapping, it is very difficult to implement a workable flood plain management program which will minimize potential flood losses. Detailed flood hazard maps are C-I C-l C-2 C-2 C-4 C-6 needed to administer flood plain management regulations. Included in the report are engineering and hydrologic data which will facilitate ,the use of the-maps. The data should be useful in developing a master drainage plan, in road and bridge plans and design, and in the 'planning C-7 of channel modification, and flood control structures - if needed. The report contains interpretations of the flood hazard analyses and recom- c-8 mendations to reduce flood damages. However, it is beyond the scope of