Challenges in predicting mitigating and responding to drought
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Challenges in Predicting, Mitigating, and Responding to Drought. National Academy of Sciences. Chandra S. Pathak, PhD, PE, D.WRE, F.ASCE Hydrology Hydraulics & Coastal Community of Practice Engineering and Construction Division US Army Corps of Engineers – Headquarters Washington DC.

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Challenges in Predicting, Mitigating, and Responding to Drought

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Challenges in predicting mitigating and responding to drought

Challenges in Predicting, Mitigating, and Responding to Drought

National Academy of Sciences

Chandra S. Pathak, PhD, PE, D.WRE, F.ASCE

Hydrology Hydraulics & Coastal

Community of Practice

Engineering and Construction Division

US Army Corps of Engineers – Headquarters

Washington DC

Nov 7, 2013

US Army Corps of Engineers

BUILDING STRONG®


Challenges in predicting mitigating and responding to drought

USACE Mission Areas

BUILDING STRONG

Military Programs

Homeland

Security

  • MILCON for Modular Force

  • Global Positioning

  • BRAC 05

  • Field Force Engineering

  • MILCON Transformation

  • Environmental Restoration

Civil Works

  • Critical Infrastructure

  • Water Supply, Navigation

  • Flood Risk Management

  • Regulatory, Hydropower

  • Recreation, Disaster Response

  • Environmental Restoration

  • Anti Terrorism Plans

  • Intelligence

  • Facility Security

Partnership

Real

Estate

Interagency

Support

Research & Development

  • Water Resources

  • Environment

  • Installations

  • Warfighter

  • Federal

  • State

  • Local

  • International

  • DOD Recruiting Facilities

  • Contingency Operations

  • Acquire, Manage and

  • Dispose

BUILDING STRONG®


Infrastructure in usace

Infrastructure in USACE

  • Portfolio Stats:

    • Very Large

    • Aging (+55 years)

    • Relatively untested

    • Geotechnical Challenges Dominate

702 Dams

“Infrastructure follows Floods,

People Follow Infrastructure”

+2,500 Levee Systems


Usace our mission regulate reservoirs to support congressionally authorized purposes

USACE - Our Mission:Regulate Reservoirs to Support Congressionally Authorized Purposes


Dams reservoirs project purposes

Flood Risk Management

Low Flow Augmentation

for Navigation & Water Quality

Secondary

Water Supply

Hydropower

Recreation

Fish & Wildlife Conservation

Primary

Dams/Reservoirs Project Purposes


Challenges in predicting mitigating and responding to drought

INDUCED SURCHARGE POOL

FLOOD CONTROL POOL

CONSERVATION POOL

(Water Supply, Hydropower….)

INACTIVE POOL

Storage Zones

Tainter

Gate

DAM


Water control manuals

Water Control Manuals

  • The main purpose of a manual is for day-to-day use in water control for essentially all foreseeable conditions affecting a project or a system

  • Division and district commanders will develop water control plans as required by Section 7 of the 1944 Flood Control Act, the Federal Power Act and Section 9 of Public Law 436-83 for all projects located within their areas, in conformance with ER 1110-2-240

  • They must be prepared in compliance with the guidelines presented in :

    • Engineering Regulation ER 1110-2-240, Water Control Management

    • Engineering Manual EM 1110-2-3600, Management of Water Control System

    • Engineering Regulation ER 1110-2-8156, Preparation of Water Control Manuals

    • Environmental Operating Principals ER 200-1-5.


Drought operations

Drought Operations

  • Drought... abnormally dry and/or unusually warm weather sufficiently prolonged for the corresponding deficiency of water to cause a "serious hydrologic imbalance“

  • Reservoirs: Every reservoir has a Drought Contingency Plan which provides for releases for downstream communities.

  • Mississippi River Locks: Typically there are no drought operations; inflow = outflow.


Challenges issues and concerns

Challenges, Issues and Concerns

  • Aging infrastructure – during rehab reduced storage capacity for floods and droughts

  • Climate change – frequent floods and droughts

  • Increase flexibility of systems operations through revision and updating of water control manuals

  • Need more accurate (reduced uncertainty) short-term and long-term forecast for rainfall and drought from NWS/NOAA to improve water management operations and planning.


Questions

Questions?


Back up slides

BACK UP Slides


Challenges in predicting mitigating and responding to drought

U.S. Drought Forecast


Precipitation outlook

Precipitation Outlook


7 day quantitative precipitation forecast qpf

7-Day Quantitative Precipitation Forecast (QPF)


National gauging program

National Gauging Program


Water supply

Water Supply

  • The Corps can enter into Water Supply agreements for municipal or industrial use.

  • The Corps can also enter minor water supply agreements during State declared droughts.

  • Water Supply accounts for a minimal amount of storage in Corps Lakes.


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