1. Risk Mapping, Assessment, and Planning
RiskMAP in Oklahoma
Gavin Brady, CFM, State NFIP Coordinator
Janet K. Meshek, PE, CFM

2. OWRB - Cooperating Technical Partner
OWRB’s CTP PROGRAM TIMELINE
2002
BECAME A CTP
MMMS DUTIES FOR MAP MOD
MARCH 2011
CONTRACTED CTP SERVICES
APRIL 2011
FEMA NOTICE OF FUNDING
BUSINESS PLAN DEVELOPMENT
2012+
MAPPING PROJECTS IMPLEMENTATION

3. HUC 8 Basin Demographics

4. HUC 8 Basin Prioritization

5. 5-Year Plan - HUC 8 Discovery Projects
Lower Cimarron-Skeleton
Middle Washita
Polecat-Snake
Deep Fork
Lower Canadian-Walnut
Black Bear-Red Rock
Lower North Canadian
Lower Cimarron
Grand Lake O’ Cherokees
Northern Beaver
Middle North Canadian
Cache
Bird
Caney
Little
Lower Salt Fork Arkansas
Upper Washita
Farmers-Mud
Lower Verdigris
Clear Boggy
Lower Neosho

6. Grand Lake O’ Cherokees HUC 810

7. Lower North Canadian HUC 8

8. Middle North Canadian HUC 8

9. Polecat-Snake HUC 8

10. OWRB Risk MAP Responsibilities
Update of the State Business Plan
Program Management
Outreach
Update of the CNMS (Coordinated Needs Management Strategy) database
This is the stream assessment that determines the validity of the process used in mapping

11. OWRB Risk MAP Responsibilities
Coordinator and/or facilitator between FEMA, other State and Federal agencies, and local communities in the completion of mapping activities.
Resolve “unmet needs” from the CNMS database and other known sources.
Resolve mapping issues as they arise.

12. Goals for Oklahoma Mapping Program
Develop BFE’s for all Zone A floodplains, and convert all urban Zone A floodplains to Zone AE, as possible.
Update annually costs and timelines for the RiskMAP/CTP Business Plan Projects 5-Year Plan.
Coordinate with other state and federal agencies to provide seamless statewide topographic mapping.

13. Goals for Oklahoma Mapping Program
Develop an Oklahoma FloodMap Website with current effective maps, floodplain models and reports (currently use websites to receive mapping comments for Discovery).

14. Goals for Oklahoma Risk MAP Program
Maintain and support the Statewide Repetitive Loss Plan
Use the Risk MAP products in the State’s Multi-Hazard Mitigation Plan for flooding.
Develop a Risk MAP Plan format that will assist in obtaining HMA grants

15. Coordinated Needs Mapping Strategy
The CNMS database contains assessments for 61 out of the 71 Oklahoma HUC-8s
38,000 Zone A, AE, AO, & AH stream miles

16. Discovery Data Requests
Areas of nuisance flooding
Areas of repetitive structural flooding
Areas of frequently overtopped bridges and culverts
Local flood mitigation activities
Existing Flood Hazard Data
Areas of nuisance flooding
Areas that do not drain well cause pavement damage due to “pumping”. The subsequent damage is often hidden during a flooding event, creating a hazard
Ponded water can be quite deep, even in a backwater area, resulting in hazardous driving conditions.
Emergency vehicle passage is hampered or prevented.
Areas of repetitive structural flooding
The State has a State-wide Repetitive Loss Plan
Areas of frequently overtopped bridges and culverts
Locations where staff gages may be used to show depth of water over roadways
Potential for public awareness programs to show that often what is under the water is washed out
The State has a goal of developing an inventory of low-water crossings, to receive “Turn Around Don’t Drown” signs
Local flood mitigation activities
Flood Control Capital Improvement Projects planned, funded or under construction
Ongoing or Planned Hazard Mitigation Grant Projects
Purchase of repetitive loss properties
Structural Projects
Existing Flood Hazard Data
Previous stormwater studies
Project Design Reports for stormwater projects
Local Master Drainage Plans
High water marks from previous floods of any magnitude

17. Discovery Data Requests
Flood Study Needs
Areas of known flood losses
Areas of known inadequate storm sewers or channels
Problems with current floodplain mapping
Regional Watershed Plans
Possible sources are the Tulsa District Corps of Engineers and the NRCS
Comprehensive plans and regulatory controls
Many communities have adopted comprehensive plans, regulations and design criteria to control development
Flood Study Needs
Areas of known flood losses
Areas of known inadequate storm sewers or channels
Problems with current floodplain mapping
Regional Watershed Plans
Possible sources are the Tulsa District Corps of Engineers and the NRCS
Comprehensive plans and regulatory controls
Many communities have adopted comprehensive plans, regulations and design criteria to control development

18. Discovery Data Requests
Infrastructure Information not included in current Detailed Hydraulic Models
Levees
New Bridges
Dams
Culverts
Road Improvements
Infrastructure Information not included in current Detailed Hydraulic Models
Levees
New Bridges
Dams
Culverts
Road Improvements

19. Discovery Data Requests
Building Footprints and other Planimetric Data
Parcel Data or Boundaries
Available in communities with Enhanced E911
Available from County Assessors in many cases
GIS Layers
Boundary
Hydrography
Transportation
Building Footprints and other Planimetric Data
Parcel Data or Boundaries
Available in communities with Enhanced E911
Available from County Assessors in many cases
GIS Layers
Boundary
Hydrography
Transportation

20. Discovery Data Requests
Local Development and Floodplain Management Plans
Major development plans that directly address stormwater runoff
New Elevation Data and aerial photography
Local Development and Floodplain Management Plans
Major development plans that directly address stormwater runoff
New Elevation Data and aerial photography

21. Sample Data Leveraged as Local Match
Field Surveys, including QA/QC
Topographic Data
Detailed Hydrology and independent QA/QC
Hydraulic Analysis and independent QA/QC
Floodplain Mapping and independent QA/QC

22. Next Steps for Discovery Projects
Cimarron - Skeleton HUC 8
Lower Canadian - Walnut HUC 8

23. Questions?