FLOOD05288

• County: Montrose
• Community: Nucla
• Basin: San Juan/Dolores
• Title: FloodPlain Information Report Town of Nucla
• Date: 11/1/2000
• Prepared For: Nucla
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

.
.
.
I.
.
.
.
.
.
.
.
.
.
.
.
I.
i.
'.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
,.
.
.
I.
.
.
.
.
.
.
.
.
.
I.
.
.
.
I.
.
.

PREFACE

This Floodplain Information Report (FIR) is part of a program by the Colorado Water Conservation
Board (CWCB) to make approximate floodplain maps prepared by the Federal Emergency
Management Agency (FEMA) easier for local governments to use. This CWCB report provides
limited engineering information to support the approximate delineations on the FEMA maps, and it
provides floodplain management information to guide the local governments in the use of the maps.

The official floodplain information for Nucla is the Flood Hazard Boundary Map (FHBM), dated
March 26, 1976. The FHBM was prepared by the Federal Insurance Administration (PIA) and
contains approximate floodplain delineations. The approximate floodplains do not include any
engineering information to describe basis of the approximate floodplain mapping. The initial
purpose of this report, therefore, is to provide the Town with limited supporting information for the
approximate floodplain delineations. This FIR includes a description of available hydrologic
information for major flooding sources within or adjacent to the Town. In addition, the FIR gives
the Town some basic information about floodplain management and it provides some alternatives
that could be considered in formulating and implementing floodplain management objectives.

A second function of this report is to assure that the FHBM meets the basic technical requirements
for designation and approval by the CWCB. Without the inclusion of basic engineering
information, the approximate floodplain delineations shown on the Nucla Flood Hazard Boundary
Maps cannot qualify for CWCB designation. Colorado statutes require that local governments
obtain from the CWCB the designation and approval of floodplain information for its use in
regulatory purposes. This FIR provides a means for the FHBM to meet that statutory objective. As
new and more detailed floodplain information becomes available, the approximate floodplain areas
shown on the FHBM panels will become superseded. The CWCB will designate and approve new
information, and rescind old information as appropriate.

ii