HomeMy WebLinkAbout South Kona PPT January 23 & 24South Kona Flood Hazard Study Public Information Meetings January 23-24, 2008 Steve Yamamoto USACE, Honolulu
County of Hawaii
Introductions
Purpose
Discuss Corps of Engineers’ study authority
Provide information and status on the South Kona Flood Hazard Study
Discuss study area, methodology and products
Gather input from community
Study Authority
Authority:
Section 206 of the Flood Control Act of 1960, as amended (Flood Plain Management Services Program)
Purpose:
To encourage prudent use of the Nation’s flood plains for the benefit of the national economy and general welfare by supporting comprehensive flood plain management at all governmental
levels.
Aloha and thank you for allowing me to present the Corps of Engineers Flood Plain Management Services program.
Almost everyone knows that the US Army Corps of Engineers build water resource projects. Everything from Deep Draft Harbors to Flood Control Dams and Channels to Hydropower and Inland
Navigation.
Not so well known is that the Corps also provides assistance to help States and Local governments to help them manage their water and land resources. The two programs are the Flood
Plain Management Services and Planning Assistance to the States program.
I will be presenting information about the FPMS program.
FPMS Program
TECHNICAL SERVICES
Obtain, develop or interpret flood plain data which includes:
providing historical data on flooding
establishing flood frequency
determining flood stage
The types of technical services provided to state and local governments include:
gathering high water mark data
obtain historical flood information
assist other agencies with determining flood frequency (Storms – NWS; Stream flow – USGS)
TECHNICAL SERVICES (cont.)
determining extent of flood plains
establishing regulatory floodways
providing site specific flood hazard evaluations
inventory of flood prone structures
post flood studies
FPMS Program
Flood plain delineation
Site specific flood hazard evaluation studies
Flood plain management plans
Regulatory floodway determination
Inventory of flood prone structures
Post flood studies
South Kona Flooding
Historical Floods
March 1956 8-12 inches in 3-hr period
April 1963 4 inches in 2 hours
Nov 1967 4 inches in 2 ½ hrs
May 1976 5 inches in 4 hours
Nov 2007 7 ½ inches in 4 hours
South Kona Flood Study Scope of Work
Collect lidar topographic survey data for 142 sq. mi.
Gather flood information at public meetings
Conduct hydrologic and hydraulic analyses to determine flood hazards within the study area
Prepare report and flood maps documenting study results
Process maps for FEMA FIRM revisions
South Kona Flood Study Schedule
Current Study Schedule
Execute Study Agreement June 2007
Award Lidar Topographic Contract Sept 2007
Award Floodplain Hydraulics Contract Jan 2008
Conduct initial public meeting Jan 2008
Complete Draft report and flood maps Sept 2008
Conduct second public meeting Oct 2008
Complete Final report and flood maps and submit results to FEMA Nov 2008
Points of Contact
Steven Yamamoto, USACE, Project Manager
438-0881
Steven.H.Yamamoto@usace.army.mil
Milton Yoshimoto, USACE, Project Manager
438-2250
Milton.T.Yoshimoto@usace.army.mil
Jeff Overton, Group 70, Chief Environmental Planner
523-5866
Massoud Rezakani, MRC, Principal
480 656-2304
Galen Kuba, Chief of Engineering Div, County of Hawaii DPW
961 8422