Westfield River Levee Maint Work
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City of WestfieldInformational Meeting
Westfield RiverFlood Control System
September 23, 2009
Presenters:
Mark Cressotti, P.E., City Engineer
Ronald Michalski, P.E., Tighe & Bond, Inc.
David Loring, P.E., LEED AP, Tighe & Bond, Inc.
Has Westfield Experienced Floods?YES
■ Periodic City Flooding Over 200 Years– City constructed various levees dating back to late 1800’s
■ 1930’s – Major Flood– Federal & State Governments responded
■ 1955 – Major Flood– Additional Federal & State involvement
■ 1960 – Westfield Flood Control Commission Established
Historic Flooding
What is the Westfield River Flood Control System?
■ 10,000 + Feet of Earthen Levee– 4,500 feet west of Elm Street constructed late 1800’s– 5,500 feet east of Elm Street constructed in the 1940’s/1950’s
■ Williams Riding Way Pumping Station– Constructed in the 1950’s
■ Protects the City from the Westfield River– Minimizes cost of flood insurance
Westfield River Levee System
Williams Riding Way Pump Station
Westfield
River
Levee System
Leve
e S
tart
Leve
e E
nd
Elm
St.
N. Elm
St.
Meadow St.
Orange St.
St. Paul St.
Miller S
t.
What is Happening Now?
■ Hurricane Katrina Response – Nationwide Levee Assessment Program
■ Federal Emergency Management Agency (FEMA) is the Focal Point
■ FEMA Flood Maps are Being Updated (2007 Notice)
■ FEMA Knows Little About the Westfield River Flood Control System
■ City Requested to Certify the System by September 2009
■ Without Certification, the City’s Flood Protected Areas Will No Longer be Protected
Current FEMA Map
100 Yr. Flood
500 Yr. Flood
Flood Protected Area – What Does it Mean to the City?
■ Properties Do Not Need Flood Insurance
■ Properties in a Flood Zone Need Flood Insurance
■ Homeowner Insurance Does Not Provide Flood Insurance
■ Flood Insurance is Expensive ->$1,000 per $100,000
What is the Levee Certification Process?
■ Follows Rigid Federal Requirements
■ City/Engineering Consultant Must Inspect and Certify that the System is OK
■ Example Certification Items– No trees– No structures– No washouts/penetration problems– Mowed/maintained– High enough– Stable/properly constructed
■ Levee is currently Provisionally Accredited
Existing Flood Control System has Problems
Trees Fences/Obstructions
Williams Riding Way Pump Station
Levee Certification is Needed:
■ FEMA Flood Maps Are Being Modified
■ If The Levee Is Not Certified, FEMA Maps Will Change
■ Current Flood Protected Areas Will Be Eliminated
■ Expensive Flood Insurance Will Be Needed
Levee Certification Improvement Costs
■ Levee Accreditation $200,000
■ Contract #1 $200,000– Levee Maintenance
■ Contract #2 $1,200,000– Levee Repair
■ Pump Station Work $ 800,000– Maintenance/Upgrade
Total $2, 400,000*
*$200,000 Levee System Accreditation is not a part of the proposed $2,200,000 borrowing request.
City Initiated a Three Phased Levee Certification Program
■ Pursue Levee Certification
■ Contract #1 –Maintain the Levee
■ Contract #2 – Upgrade the System– Raise the height in sections– Remove structures– Repair drainage outlets– Upgrade the Williams Riding Way Pump Station
■ Annually – Continue to Maintain the Levee
How Are You Impacted?
■ City has a Levee Easement/Row■ You’re an Abutter■ You May Be Using the Levee■ You’ll See Maintenance and Construction Work■ Certain Levee Impacts Must Be Removed
– Trees– Fences– Landscaping– Sheds/Garages– Parking Areas
What’s the Levee Certification Schedule?
■ Levee Certification Process – Ongoing
■ Levee Maintenance Work – This Fall/Winter
■ Levee Upgrade Work – Next Spring/Summer
■ Accreditation Process Should be Finished in August 2010
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