physical map revision flood insurance study map revision flood insurance study santa fe county, new...

Physical Map RevisionFlood Insurance Study

Santa Fe County, New MexicoKickoff Meeting

April 27, 2010

Presentation Overview

Introduction FEMA Risk MAP Update Project Scope Update Project Goals and Process Methodology Technical Challenges Schedule Information Resources Questions and Contact Information

Introductions

Introduction of Participants• Name• Community• Your Department• Your Role/Title

Please make sure that you sign in

Introduction

Why are we here?• Project scope update • Identify area for physical map revision and

methodology• Project schedule and community reviews

Introduction

FY2009 transition from Map Modernization (Map MOD) to FEMA Risk MAP

• Three focus areas Coastal Levees Other engineering needs

FEMA Risk Mapping Assessment Planning Update

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Map Modernization used increasingly-available technology to increase the quality, reliability and availability of flood hazard maps and data It focused on creating digital maps to

provide timely, accurate information to community planners

Risk MAP further enhances the maps, involves communities during the assessment and planning stages, and guides and encourages them to

communicate risk to their constituents

FEMA Risk MAP Update

Through collaboration with State, Local, and Tribal entities, Risk MAP will deliver quality data that increases public awareness and leads to action that reduces risk to life and property.

Study Discussion

NOTE: Schedule to be discussed later in the presentation

FEMA Flood Study Project Phases

Scoping Meeting

(completed)

Project Kickoff Meeting

Data Acquisition & Development

DFIRM Production

& Preliminary DFIRM

Issuance

CCO MeetingPost

Preliminary Processing

Project Scope Development

Scoping Meeting was held on November 4, 2009 Captured Needs from the Community during the

Meeting Community Coordination Meeting with City of Santa

Fe and Santa Fe County on March 31, 2010 Prioritized Needs Developed our Final Scope after the Scoping Meeting

Project Scope Update

Scoping Wrap-Up• Overview of Final Scope Total Length of Streams to be studied: 75.7 miles Length of detailed studied streams: 12.3 miles Length of limited detailed studied streams: 30.0 miles Length of new approximate study (Automated Hydrology and

Hydraulics): 33.4 miles 30 panels anticipated to be revised (including map index)

Project Scope Update

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Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

Santa Fe County

Arroyo Hondo Detailed w/Floodway

From: Confluence with Arroyo De Los ChamisosTo: Upstream end of existing detailed study

9.7

Santa Fe County

Rio Tesuque Detailed From: Approximately 2700 feet downstream of Tesuque Village RoadTo: Confluence with Big Creek

1.8

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

Santa Fe County and Santa Clara Pueblo

Santa Cruz River

Detailed From: Approximately 1300 feet downstream of State Road 106To: Approximately 500 feet downstream of confluence with Arroyo Del Llano

0.8

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

City of Santa Fe Arroyo Barranca

Limited Detailed

2.0

City of Santa Fe Arroyo De La Paz

Limited Detailed

From:Confluencewith Arroyo De Los AntaresTo:Approximately800 feet upstream of Rodeo Road

0.8

Project Scope Update –Selected Streams

15

Community Stream Name Study Type From and To Total Miles

City of Santa Fe Arroyo De La Piedra

Limited Detailed

From: Upstream end of existing detailed studyTo: Approximately 1400 feet upstream of Barranca Road

1.9

City of Santa Fe Arroyo de Los Amigos

Limited Detailed

From: Confluence with Arroyo De Los ChamisosTo: Approximately 1400 feet upstream of Saint Michaels Drive

1.2

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

City of Santa Fe Arroyo de Los Antores

Limited Detailed

From: Confluence with Arroyo De Los ChamisosTo: Intersection of Calle De Los Ninosand CalleCampeon

0.7

City of Santa Fe and Santa Fe County

Arroyo En Medio

Limited Detailed

From: Confluence with Arroyo De Los ChamisosTo: Approximately 1500 feet of East end of Sky Island Road

4.5

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

Santa Fe County

Arroyo Hondo Limited Detailed

From: Upstream end of existing detailed studyTo: Approximately 700 feet South of intersection of La Barbaria Road and Happy Trails Road

4.7

City of Santa Fe Arroyo Ranchito

Limited Detailed

From: Approximately 250 feet upstream of confluence with Arroyo De La PiedraTo: Approximately 600 feet upstream of Camino Encantado

1.7

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

City of Santa Fe Arroyo Saiz Limited Detailed

From: Upstream end of existing detailed studyTo: Confluence with Canada Ancha

0.6

Santa Fe County

Big Creek Limited Detailed

From: Confluence with Rio TesuqueTo: Approximately 2500 feet East of North end of Bauer Road

1.5

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

City of Santa Fe and Santa Fe County

Canada Ancha Limited Detailed

From: Approximately 200 feet downstream of Lejano LaneTo: Approximately 1300 feet upstream of La Entrada

2.9

Santa Fe County

Little Tesuque Creek

Limited Detailed

From: Confluence with Big CreekTo: Approximately 1500 upstream of Bauer Road

1.3

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

City of Santa Fe NE Arroyo de Los Pinos

Limited Detailed

From: Approximately 200 feet Northeast of intersection of Saint Michaels Drive and Llano StreetTo: Approximately 1100 feet upstream of Luisa Street

1.5

City of Santa Fe SW Arroyo de Los Pinos

Limited Detailed

From: Upstream end of existing detailed studyTo: Galisteo Street

0.9

Project Scope Update –Selected Streams

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Community Stream Name Study Type From and To Total Miles

City of Santa Fe Unnamed Stream 11

Limited Detailed

From: Confluence with Arroyo De La PiedraTo: Approximately 700 feet Southeast of East end of Brownell-Howland Road

1.8

City of Santa Fe and Santa Fe County

Unnamed Stream 31

Limited Detailed

From: Confluence with Rio TesuqueTo: Approximately 500 feet upstream of Sangre De Cristo Drive

2.0

Project Goals & Process –Terrain

Terrain source to use for PMR• Bohannan Huston LiDAR (2005);

vertical datum NAVD88; horizontal datum NAD83.

• Supplemented by 10M USGS DEMs in areas without LiDAR.

Project Goals & Process –Base Data

Base Data layers • 2009 NAIP Imagery• Roads from City of Santa Fe and

Santa Fe County(2010)• Corporate Boundaries from City of

Santa Fe and Santa Fe County (2010)

• Other Base Map Layers Effective FIRMs or TIGER Water lines; PLSS; Benchmarks;

Rail roads, Structures; Forest, Park & Reservation Boundaries

• Airport & Railroad from Census Tiger / Line files

• Database Completely Updated• Only Modified DFIRMs Updated

Project Goals & Process –Field Survey Plan

Field survey planned for channel geometry and structures. Detailed vs. Limited

Detailed survey of structures.

Typical Cross-section Photograph: Indian Creek IND-6600 (Displays Survey Code Locations)

Project Goals & Process –Methods

FEMA G&S • Appendix C, Riverine

Flooding• Appendix E, Shallow

FloodingBrief Description of

Hydrology and Hydraulics

Project Goals & Process –Hydrology

Enhanced Product - Riverine• Hydrology Rainfall-Runoff model, HEC-HMS Effective Discharges

Project Goals & Process –Hydraulics

Enhanced Product -Riverine

• Hydraulics WISE HEC RAS version 4.1 Multiple frequencies Tie-In to effective BFEs

Project Goals & Process –Hydrology

Base Product - Riverine• Hydrology Regional Regression

Equations Zone As

Project Goals & Process –Hydraulics

Base Product- Riverine• Hydraulics HEC-RAS version 4.1 One percent annual chance flood event- Zone A. Tie-in to effective

boundaries

Project Goals & Process –Products (all study types)

Flood Insurance Study Preliminary DFIRM GIS database Mapping Panels

• Hardcopy• Adobe PDF on data disk

Schedule

Project Task Completed by

Base Mapping, Topographic Data Development, and Field Survey 08/29/10

Hydrologic and Hydraulic Analysis 10/29/10

Floodplain Mapping 11/30/10

Issue Preliminary 12/30/10

Post Preliminary Consists of 3 Stages

• Community Coordination Meeting

• Appeal Period and Resolution

• Map Adoption FEMA Publication 495

Schedule

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Information Resourceshttp://rampp-team.com

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Information Resources

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Information Resources

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Information Resources

Presentation Review

Introduction FEMA Risk MAP Update Project Scope Update Project Goals and Process Methodology Technical Challenges Schedule Information Resources Questions and Contact Information

Contact Information – New Mexico

Production Lead ContactDave Turk505-855-7543dave_turk@urscorp.com

FEMA Project MonitorJim Orwat940-898-5302james.orwat@dhs.gov

FEMA Mitigation Planning ContactPatricia Schaffer940-898-5136

New Mexico NFIP CoordinatorBill Borthwick505-476-9617william@borthwick@state.nm.us

New Mexico Planning ContactSophia A. Beym, SHMO505-476-9607

Questions?