FLOOD10329

• Designation Number: 581
• County: Hinsdale
• Community: Hinsdale County
• Stream Name: Los Pinos, Weminuche, Middle Fork Piedra, E. Fork
• Title: Floodplain Information Report, Hinsdale County, Colorado
• Date: 9/1/2004
• Prepared For: Hinsdale County and CWCB
• Prepared By: Love and Associates, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

INTRODUCTION

Purpose and Scope

The Floodplain Information Report provides supporting documentation for modified
floodplains within Hinsdale County. For CWCB designation purposes, the flood-prone
areas contained herein replace those floodplains shown in Hinsdale County FIRM, dated
September 1987. The 1987 FIRM does not address the location of public lands within
the County. This document provides engineering information to fulfill the requirements
of CWCB designation.

The document 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 information.

Authorization

The CWCB has statutory responsibilities related 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(1)(c) of the Colorado Revised Statutes (CRS).

A CWCB designation and approval of current floodplain information is needed for
Hinsdale County, Colorado. CWCB has prepared the Floodplain Information Report to
update the identification of the County's flood-prone areas so the community can better
implement its floodplain management program.

3