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WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group...

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WILDCAT CREEK WATERSHED MITIGATION THROUGH PARTNERSHIPS Chad Bunger, AICP, CFM, Senior Planner Rob Ott, P.E., Director of Public Works
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Page 1: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

WILDCAT CREEK WATERSHED  MITIGATION THROUGH PARTNERSHIPS

Chad Bunger, AICP, CFM, Senior PlannerRob Ott, P.E., Director of Public Works

Page 2: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &
Page 3: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &
Page 4: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

The Back Story  Significant flooding history

•1914•1915•1941•1951•1965

•1970•2007•2010•2011* Riley Co. FIS

Page 5: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

2 Consecutive Years= Same Flooding

Page 6: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

June 6, 2011 Wildcat Creek Flood Event

Page 7: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

June 6, 2011 Wildcat Creek Flood Event

Page 8: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

June 6, 2011 Wildcat Creek Flood Event

Page 9: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Wildcat Creek Watershed Working Group Working group was formed in July, 2011

6 sub‐committees Grants and Funding Sources Detention & Watershed Development & Freeboard Research & Data Collection Debris Mitigation & Enforcement Training & Education

Assisted by city, county, state & federal professional staff

Page 10: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Working Towards Risk Reduction 

Silver Jackets Pilot Project Future Conditions Mapping Higher Standard Floodplain Regulation  Community Rating System

Page 11: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

11

What is ?Silver Jackets is a program which the US Army Corps of Engineers uses to do collaborative work with federal, state and local agencies create an interagency team at the state level to develop and implement solutions to state natural hazard priorities.

The Silver Jackets Program provides a formal and consistent strategy for an interagency approach to planning and implementing measures to reduce the risks associated with natural hazards.

Page 12: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Pilot Project Details

Cost sharing of 3 stream gauges Riley County Ft. Riley (DOD) City of MHK NWS  USGS USACE

Page 13: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &
Page 14: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Pilot Project Details

Three stream gauges Increased accuracy for time of concentration Increase accuracy on flow rates

National Weather Service Forecast Point Improve Emergency Response Time and Level Increased Public Awareness 

Page 15: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

q

Page 16: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Pilot Project Details

Cost sharing of 3 stream gauges National Weather Service Forecast Point AHPS website

Wildcat Creek Floodplain Management Plan

Page 17: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &
Page 18: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Section 3 – Goals and Objectives Goal #1:  Develop a collaborative multi‐jurisdictional approach 

towards floodplain management to address the flooding concerns and impacts in the Wildcat Creek Watershed.

Goal #2:  Proactively manage and reduce flood risk along Wildcat Creek and its tributaries to protect life and property.

Goal #3:  Protect and preserve the natural riparian corridor environment to enhance habitat connectivity, water quality, erosion and sediment management, bank and channel stabilization, and provide compatible recreational opportunities.

Goal #4:   Obtain a balance between development needs and the proper functions of the floodplain within the Wildcat Creek Watershed.

Goal #5:   Improve public understanding of the flood risks within the Wildcat Creek Watershed.

Page 19: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &
Page 20: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Document can be found atwww.cityofmhk.com/fmp

Page 21: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Future Conditions MappingTale of 2 Floodplains

Page 22: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Higher Standard Floodplain Regulations

Page 23: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Detention & Post‐Construction BMP Requirements Pre Development = Post Development runoff for 50%, 10% & 1% year events.

Post Construction BMP ~ Multiple Phase 2 Cities within the State of Kansas adopted a uniform Post Construction BMP Manual. 

Manual can be found at http://www.cityofmhk.com/DocumentCenter/Index/816

Page 24: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

New Definition of BFE

FLOOD PROTECTION ELEVATION (FPE) means the elevation to which all structures located within the Community Special Flood Hazard Area or FEMA Special Flood Hazard Area must be elevated or floodproofed if non‐residential.  Where the Community Base Flood Elevation is provided, the elevation shall be that elevation plus one (1) foot of freeboard.  Where the Community Base Flood Elevation is not provided, Flood Protection Elevation shall be the FEMA Base Flood Elevation plus two (2) foot of freeboard.  

Page 25: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Compensatory Storage 

Any development, including fill, new construction, substantial improvement or other encroachment within the Community Special Flood Hazard Area shall not result in an increase in the Community Base Flood Elevation that is greater than one tenth of a foot (0. 1’).  The flood elevation shall be documented and certified by a registered professional engineer.  In the event that the development creates a net rise in the Community Base Flood Elevation that is greater than one tenth of a foot (0.1’), compensatory storage shall be provided, as followed:

Page 26: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Compensatory Storage (cont.)

Floodplain along a stream = at least 1.2 times the volume of floodplain storage lost or displaced

Floodplains in low‐lying areas = at least 1 times the volume of floodplain storage lost or displaced

Compensatory storage shall be located opposite or adjacent to the fill areas

Compensatory storage areas shall drain freely A drainage easement & restrictive covenant shall be 

provided on the property An as‐built survey shall be provided once project is 

completed. Only applies to developments over an acre

Page 27: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Existing Development

Cumulative Substantial Damage & Improvements‐Damage – 2 events in 10 years that exceed average 

of 25%.‐ Improvements –Any expansion of the footprint of 

the structure over its life that equals or exceeds 50%

* Must conform to FPE or get an FPE Exception

Page 28: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Community Rating System

Accepted into program in May, 2013 Level 8 = 10% discount on premiums Looking to substantially increase our level in the upcoming years

Page 29: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Takeaways from the Process

Collaboration is key! Flooding is not just a local entity problem

Seek out the experts 

Think outside the box

Harness Political Will

Page 30: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Looking Ahead

Adopting FIRMs with Future Conditions Adopting Higher Standard Floodplain Regulations

Big Blue River Project with local, state & federal agencies Similar project but is including a mitigation elements

Public Outreach Plan BIG POINTS FOR CRS!

Page 31: WILDCAT CREEK WATERSHED MITIGATION THROUGH …Wildcat Creek Watershed Working Group Working group was formed in July, 2011 6 sub‐committees Grants and Funding Sources Detention &

Check us out!

Twitter@MHK_Com_Dev

FacebookKnowYourFloodRiskMHK

www.KnowYourFloodRiskMHK.com


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