NPS - National Capital Region
NPS Regional Flood Fighting across the
Potomac Watershed
Silver Jackets & NPS Dam-Levee Safety Program – Presenter René Senos
NPS - National Capital Region
NPS Regional Flood Fighting across the Potomac
Watershed
• DC flood-fighting occurs within regional Potomac watershed context
and interagency collaboration
• NPS–NCR and its parks serve critical role to reduce flood risk in DC
and Potomac Watershed
• NPS applies Risk Management Model to identify flood risk and
prioritize projects across the region
• Case Studies: recent NPS flood planning, design, monitoring, and
rehabilitation projects
Potomac Watershed
14,700 sq miles
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C&O Canal = 185 miles –
functions as a dam facility
NPS-NCR
Parks
Potomac Watershed Boundary
EXPERIENCE
YOUR
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NPS – National Capital Region
• Dozens of National Parks,
Sites and Monuments
• Diversity – urban/rural
• NPS land manager: most
DC acreage
• DC Flood Protection on
National Park lands
• Unique Mission: protect
cultural and natural resources
while providing interpretive,
educational, recreational
opportunities
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USPP-D3
Rock
Creek
GRFA
HAFE
MONO
National Mall
NCR/USPP
Headquarters
USPP-D1
National Capital
Parks East
USPP-D5
Tidal
Flooding
Prince William
Park
Piscataway Park
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NPS Risk Management
STEPS:
1. Evaluate Risk (RISK =
Probability + Consequences)
2. Mitigate Unacceptable Risks
Risk Assessment Matrix
NPS-NCR Wash. D.C. Flood Risk Management
PROJECTS & PRODUCTS:
•
NCR Emergency Operations Plan (draft)
•
Flood Risk Screening Reports & Flood
Response Plans
•
Hydraulic Structures Risk Screening
Assessments (ex: Lower CHOH 23 mls)
•
Strategic Projects: 17th St. & NACE levees
•
Potomac Levee CBA Workshop – extreme Flood
event
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Chesapeake & Ohio Canal
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C&O Canal / Potomac River 184.5 miles
Canal & Towpath = 1800s structure built by mules
74 Lift Locks and Five Dams (Dams #4 and #5 = High Hazard)
C&O Canal National Historical Park
Potomac River Flood Response Plan
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Key Risk Drivers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Inlet Lock #2 Gates (PFM 1-3)
Great Falls Waste Weir (PFM 114)
Mary’s Wall (PFM 1-16)
Log Wall and Potomac
Interceptor (PFM 2-5/2-6)
Cabin John Creek Culvert (PFM
2-17)
Glen Echo Culvert (PFM 2-19)
Towpath Embankment MP 6.2
(PFM 2-21)
Inlet Lock # 1 Gates (PFM 2-24)
Little Falls Culvert (PFM 3-1)
Towpath Embankment MP 5.0
to 3.0 (PFM 3-2)
Foundry Branch Waste Weir
(PFM 3-4)
Lock #4 Gates (PFM 3-6)
Lock #3 (PFM 3-7)
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5
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Risk Mitigation Approach
Fallen Tree
Potomac
Interceptor
Potomac River
Top of Log Wall
Sinkhole
Canal
Towpath ~ MP 11.2
• Phased Implementation
•
•
•
Short Term Repair
Mid Term Solutions
Long Term Risk Reduction
• NPS-DC Water Partnership
• Structural & Non-Struct. Measures
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C & O Canal / Log Wall
Monitoring & Evaluation
CHOH Dam 5
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Georgetown Focus
• Locks 3 & 4 Repair & Inlet Gates Repair
• Levee Raise during NWS-NOAA Meeting
• Lower C&O/Georgetown Flood Plan
17th Street Levee Constructed
17th Street
Levee Raise –
December 2015
(2-3 men/3 hrs =
15 labor hours)
Sandbagging to Raise a Levee
(30-40 men/2 days = 1000 labor hours)
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Potomac Park Levee Contingency
Flood Fighting CBA Workshop
Source: HDR
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Eliminate Flooding Risk at Hains Point
NPS-NCR Campus Renovation and New D1 Substation
New federal flood risk
standard applied per
Exec. Order 13690
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Structural & Nature-based Solutions
National Capital Parks East – Anacostia River
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NACE Flood Plan - Levee Repairs
DOEE-NPS FEMA Resiliency Grant + Wetland Restoration
NACE Levee & Kennilworth Aquatic Gardens
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Designing Resilient Shoreline
Communities
Piscataway & Fort Washington National Parks
Ferguson Center – Living Shoreline + Top 10 Living Building in the World
EXPERIENCE
YOUR
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CONTACT:
René Senos,
NPS Dam/Levee Safety Coordinator
[email protected]
EXPERIENCE
YOUR
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