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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
13
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 [email protected]
FEMA Project MonitorJim [email protected]
FEMA Mitigation Planning ContactPatricia Schaffer940-898-5136
New Mexico NFIP CoordinatorBill Borthwick505-476-9617william@[email protected]
New Mexico Planning ContactSophia A. Beym, SHMO505-476-9607
Questions?
