FLOOD03452

• County: San Miguel
• Community: Telluride and Sawpit
• Basin: San Juan/Dolores
• Title: Hydrology Addendum San Miguel County And Incorporated Areas
• Date: 11/1/2000
• Prepared For: County of San Miguel
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

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INTRODUCTION

Purpose and Scope
This Hydrology Addendum was prepared to provide supporting documentation for the
approximate lOO-year floodplain boundaries shown in the San Miguel County and Incorporated
Areas FlS, dated September 30, 1992, Portions of the Flood Insurance Rate Maps (FIRMs)
developed as part of the FIS were prepared using approximate floodplain mapping techniques,
Engineering information was not provided by FEMA to support the approximate floodplain
delineations shown on the FIRMs, This HA provides limited engineering information to fulfill
that need,

This HA includes:

1, Authorization for the report and its purpose and scope;

2, Study area description including information on the community, the watershed, any known
flooding history/flooding problems, previous studies and projects, and community response
to the CWCB designation and approval process;

3, Description of hydrologic and hydraulic information; and

4, Floodplain management program,

Authorization
The CWCB has certain statutory responsibilities relating to the designation and approval of
floodwater runoff channels or basins as follows:

.., "to devise and formulate methods, means, and plans for bringing about the greater
utilization of the waters of the state and the prevention of flood damages therefrom, and
to designate and approve storm or floodwater runoff channels or basins, and to make such
designations available to legislative bodies of cities and incorporated Counties, to County
planning commissions, and to boards of adjustment of cities, incorporated Counties, and
counties of this state".., Section 37-60-106(l)(c) of the Colorado Revised Statues (CRS),

A CWCB designation and approval of current floodplain information is needed for San Miguel
County, Colorado, The CWCB has prepared this HA as a means of designating San Miguel
County's FIS so that the community can better implement its floodplain management program,