FLOOD11043

• County: Statewide
• Basin: Statewide
• Title: Map Modernization Implementation Plan for Colorado
• Date: 8/1/2002
• Prepared For: FEMA Region 8
• Prepared By: CWCB, UDFCD
• Floodplain - Doc Type: Educational/Technical/Reference Information

Mapping Plan for Colorado

Table of Contents

Executive Summary........................................................................................................................ ............ iii

1.0 Introdu ction ..................................................................................................................................... 2

1.1 Background a nd Purpose of Plan................................................................................................. 2
1.2 State Role in the Flood Hazard Mapping Program....................................................................... 2
1.3 Mapping Needs Assessment and Priority Setting Approach ........................................................ 2
1.4 Underlying Principles of Colorado's Map Modernization Implementation Plan .........................2

2.0 Overview of CW CB Analysis......................................................................................................... 2

3.0 Meeting FEMA's Map Modernization Implementation Goals................................................... 2
3.1 Reducing the Average Age ofthe Maps....................................................................................... 2
3.2 Preparing Maps for Unmapped Communities............................................... ................................2
3.3 Preparing Digital Maps for the Top-Ranked Counties .................................................................2
4.0 Meeting Colorado's Goals for Floodplain Mapping .................................................................... 2
4.1 Likelihood of Mapping Success.................................................................................................... 2
4.2 CWCB Rating of Flood Risk........................................................................................................ 2

4.3 Wildfire Impacts................................................................................................... ........... .............2

5.0 Collection of C omm unity Data ...................................................................................................... 2

6.0 Prioritization of Community Mapping Needs Statewide ............................................................ 2

6.1 Population in 2000 .............................................. .......................................................................... 2

6.2 Likelihood of Floodplain Mapping Success .................................................................................2
6.3 Population Growth from 1990 to 2000 ......................................................................................... 2
6.4 CWCB Evaluation of Flood Hazard Risk ..................................................................................... 2

6.5 Age of Maps......................................................................................................................... .........2

6.6 Unmapped Communities....................................................... ........................................................ 2

6.7 Wildfire Impacts................................................................................................... ........... .............2

6.8 Assigning Weights to Individual Parameters ................................................................................ 2
7.0 Results of CW CB Prioritization Process....................................................................................... 2
8.0 Cooperation With the Urban Drainage & Flood Control District ............................................. 2
9.0 Overall C 01 0 rad 0 Recomm en dati ons ............................................................................................ 2

9.1 First Priority Counties........................... ........................................................................................ 2

9.2 Second Priority Counties.............................................................................................................. 2

9.3 Third Priority Counties ................................................................................................................. 2

9.4 Fourth Priority Counties................................................................................................................ 2

10.0 1m p lem en tin g th e Plan.................................................................................................................... 2

10.1 Proposed Approach To Addressing Mapping Needs ....................................................................2
10.2 Proposed Approach To Map Production....................................................................................... 2
10.3 Estimated Costs To Complete Proposed Mapping Activities .......................................................2

List of Figures
1 Age of Effective Map Panels ........................................................................................................ 1

2 Population Ranking....................................................................................................................... 16

3 Readiness and Likelihood of Success ........................................................................................... 17

4 Population Growth........................................................................................................................ 19

5 Flood Hazard Risks......................................................................................................... ..............20

6 Panel Age........................................................................................................................... ........... 22

7 Unmapped Counties...................................................................................................................... 24

12/26/2002