USACE Savannah District Water Management Overview

Slides:



Advertisements
Similar presentations
Yellowtail Dam & Bighorn Lake Billings, Montana October 18, 2007 RECLAMATION Managing Water in the West.
Advertisements

John H. Kerr Dam and Reservoir John H. Kerr Dam and Reservoir U.S. Army Corps of Engineers Wilmington District.
US Army Corps of Engineers BUILDING STRONG ® Mid-West Electric Consumers Association September 16, 2014 Corps of Engineers US Army Missouri River Mainstem.
Yellowtail Dam & Bighorn Lake Water Supply & Operations Meeting Billings, Montana October 8, 2009 RECLAMATION Managing Water in the West.
® Cumberland River Basin 2007 Hydrologic & Hydraulic Drought Joy Broach – Aquatic Biologist Planning Branch - Environmental Section SWPBA Tennessee November.
US Army Corps of Engineers BUILDING STRONG ® Skiatook Lake Drought Issues and Management.
Hydrologic Theory One of the principal objectives in hydrology is to transform rainfall that has fallen over a watershed area into flows to be expected.
US Army Corps of Engineers BUILDING STRONG ® St. Louis District Low Water Operations Russell Errett Water Control St. Louis District February 2013.
US Army Corps of Engineers BUILDING STRONG ® USACE – ACF Operations Bailey Crane Water Management USACE, Mobile District.
Mid-Range Streamflow Forecasts for River Management in the Puget Sound Region Richard Palmer Matthew Wiley Department of Civil and Environmental Engineering.
31 DECEMBER VARIABLE FLOOD CONTROL DRAFT FOR LIBBY RESERVOIR U.S. Army Corps of Engineers Northwestern Division, North Pacific Region.
Lake Sidney Lanier Water Supply for Atlanta, Georgia Field Photos 11/19/07 by J. Ebert.
Yellowtail Dam & Bighorn Lake Billings, Montana January 2011 RECLAMATION Managing Water in the West.
Yellowstone River Compact Commission Technical Committee Discussions Sheridan County Courthouse Sheridan, WY April 24, 2007 Bighorn Reservoir operations.
Making Better Decisions in an Uncertain World Reservoir Operations Modeling.
Federal Columbia River Power System Operations Planning.
One Corps Serving The Army and the Nation Tulsa District The Tulsa District Corps of Engineers and Its Cooperative Partners.
U.S. Army Corps of Engineers TMT Annual Review Weather and Water Summary Presented by Karl Kanbergs USACE, Water Management Division December 7, 2011.
Yellowtail Dam & Bighorn Lake Operating Criteria Review Billings, MT September, 2010 RECLAMATION Managing Water in the West.
Youghiogheny River Lake Storage ReAllocation for Downstream Water Supply by Werner C. Loehlein, P.E.
February 26, 2003 Presentation in Clarksville, Virginia to the Bi-State Commission Overview of and Interlink of John H. Kerr, Philpott, and Private Hydropower.
FERC Relicensing of the Toledo Bend Project – Hydroelectric Power Generation Drought Hydroelectric vs. Water Supply Sabine River Authority Issues.
Water Supply Reallocation Workshop Determining Yield and Space Requirement.
US Army Corps of Engineers BUILDING STRONG ® Savannah River Basin Drought Workshop October 24-25, 2012.
National Integrated Drought Information System Drought Early Warning for the Apalachicola- Chattahoochee-Flint River Basin 19 May 2015.
National Integrated Drought Information System Southeast US Pilot for Apalachicola- Flint-Chattahoochee River Basin 4 December 2012.
IMPROVING MILLERTON LAKE FLOOD CONTROL OPERATIONS TO INCREASE WATER SUPPLY Mr. Antonio M. Buelna, P.E. Mr. Douglas DeFlitch Ms. Katie Lee October 29, 2009.
CORPS OF ENGINEERS NWS Meeting Tallahassee, FL, July 19, 2006.
NE Drought Conditions CARC Update: April 2011 Mark Svoboda and Brian Fuchs National Drought Mitigation Center University of Nebraska-Lincoln.
I RRIGATION P ARKS H YDROELECTRIC E LECTRIC D RAINAGE.
Overview of Alabama Power’s Tallapoosa River Operations Martin Dam Relicensing Informational Meeting April 1, 2008 Andy Sheppard, P.E. Project Mgr. - Hydro.
Yellowtail Dam & Bighorn Lake Water Supply & Operations Meeting Billings, Montana October 9, 2008 RECLAMATION Managing Water in the West.
US Army Corps of Engineers BUILDING STRONG ® Understanding Sedimentation and Land Use Cover Relationships in the Lake Sidney Lanier Watershed Russell A.
Fairy Lake Annual General Meeting Dave Macpherson Water Management Technical Specialist Parry Sound District Ministry of Natural Resources.
Lake Sydney Lanier Northeast Georgia Chris McCurdy & Andrea D. Roche.
National Integrated Drought Information System Drought Early Warning for the Apalachicola- Chattahoochee-Flint River Basin 14 April 2015.
Drought Monitoring, Prediction and Response - A View From Georgia - David Emory Stooksbury, Ph.D. State Climatologist and Associate Professor Engineering.
Central & Southern Florida Project George Horne Deputy Executive Director Operations & Maintenance Resource Area.
USACE Managing a Drought  Overview  Timeline  Depletion Scenario Current Status– 17 Oct 07.
CANADIAN COLUMBIA RIVER FORUM U.S. Flood Control and Operational Perspective Jim Barton, Chief of Corps of Engineers Columbia Basin Water Management Division.
US Army Corps of Engineers BUILDING STRONG ® Mark Twain Lake Water Control Manual Update Joan Stemler St. Louis District Water Control.
NON-TREATY STORAGE AGREEMENT “Introduction to Operations and the Non Treaty Storage Scenarios” Presenter: Jim Gaspard.
U.S. Army Corps of Engineers Wilmington District Real-Time Conservation Pool Storage Accounting for the Falls Lake Project.
National Integrated Drought Information System Drought Early Warning for the Apalachicola- Chattahoochee-Flint River Basin 13 January 2015.
NID Data Model based on HUC CE394K.3 Term Project by Seungwon Won December 7, 2000.
NE Drought Conditions CARC Update: November 17, 2015 Brian Fuchs National Drought Mitigation Center University of Nebraska-Lincoln School of Natural Resources.
Yellowtail Dam & Bighorn Lake Reservoir Operating Criteria Proposed Modifications Lovell, Wyoming July 29, 2008 RECLAMATION Managing Water in the West.
Susan Sylvester Department Director Operations Control Department Mechanics of the Primary Water Management System.
Note: This presentation contains only preliminary research results. If you have any questions, please contact Julie Vano at Thanks.
Reclamation and Hoover Dam It’s All About The Water.
1 Bonneville Power Administration. 2 BPA markets power from 31 federally owned dams, one non-federal nuclear plant, and wind energy generation facilities.
Climate Change Threat Reduced Snowpack 1. Potential Impacts Related to Reduced Snowpack How might our community be impacted by reduced snowpack? 2.
Yuma Agriculture Water - Rights and Supply Terry Fulp Director, Lower Colorado Region Yuma Agriculture Water Conference January 13, 2016.
Presented by Jon Traum, P.E.
Savannah River Projects
Colorado River Commission of Nevada (CRCNV)
Overview of Spokane- Coeur d’Alene Hydrology
Management of Flood Waters through Mcphee Reservoir
Mid-West Electric Consumers Association
Effects of persistent drought on Lake Mead and the Las Vegas Valley
NC EMC – Water Allocation Committee
Department of Environmental Quality
Grapevine Lake Modeling & Watershed Characteristics
Drought Response Workshop
Using Models to Explore Options for Middle Oconee River Management
Albeni Falls Dam Operations
Mitigation and aquifer recharge opportunities in the Clark Fork Basin
Hydrology CIVL341.
DG Environment, Nature Protection Unit (D3)
Hydrology CIVL341 Introduction
Presentation transcript:

USACE Savannah District Water Management Overview

AGENDA Welcome Current Basin Status Seasonal Forecast Water Management Overview Questions

WATER MANAGEMENT WEB PAGE http://water.sas.usace.army.mil

MOBILE APPLICATION http://water.sas.usace.army.mil/smart

Past Year’s Rainfall and Levels Hartwell Reservoir Current Pool Elevation 653.5 NGVD29 Data current as of 12 JUNE 2017

Hartwell Basin Rainfall Thurmond Basin Rainfall Deficit since 1/1/2006 1/1/2007 1/1/2008 1/1/2009 Hartwell 20.5 29.4 17.1 2.8 Thurmond 9.9 15.2 6.5 -0.4

El Nino La Nina Mid-May 2017 ENSO Forecast More Rainfall La Nina More Tropical Systems On June 8 NOAA Climate Prediction Center stated that the chance of El Niño is at 35-50% during the Northern Hemisphere fall and winter.

Pool Projection

DROUGHT TRIGGER LEVELS 2012 Drought Plan Level 1 (Reduce Thurmond Outflow to 4200 CFS Level 2 (Reduce Thurmond Outflow to 4000 CFS), (3600 Nov1-Jan31) Level 3 (Reduce Thurmond Outflow to 3800 CFS), (3100 Nov1-Jan31) Level 4 (Reduce Thurmond Outflow to 3600 CFS), (3100 Nov1-Jan31) Level 4 (Reduce Thurmond Outflow to 3600 CFS), (3100 Nov1-Jan31) Flood Operation Normal Operation Drought Operation File Name

And now for some insight to the seasonal forecast… File Name

Water Management 101

Hartwell PROJECT 3rd most-visited Corps project – 9.3 M Visitors/yr Constructed in 1962 56,000 acre water surface (660 ft-msl) 962-mile shoreline 5 Turbines with a 422 MW Generating capacity Largest shoreline management program in the Corps with 47,523 permitted activities Built in the late 50’s and early 60’s, Hartwell Lake is only slightly smaller than its older sister, J. Strom Thurmond Lake, above Augusta, Georgia. The dam lies seven miles below the confluence of the Seneca and Tugaloo Rivers which join to form the Savannah. At full summer pool, the lake has a shoreline of almost 1000 miles. The five turbines are housed in the Corps’ only outdoor power plant. At the completion of the current rehabilitation project, the project will be able to provide 422 megawatts of electricity. Hartwell Lake has the Corps’ largest shoreline permitting program in the Corps of Engineers. Fifty percent of the public shoreline is allocated for limited private use. Over 10,000 boat docks ring the lake and there are a total of 30,000 permitted activities.

Richard B. Russell Project Largest Corps power plant east of Mississippi River Completed in 1984 26,653 acre water surface (475 ft-msl) 540-mile shoreline Four conventional turbines 328 MW Generating Capacity Four pump turbines 320 MW Generating Capacity 27 recreation sites 4 state parks

J. Strom Thurmond Project 8th most-visited Corps project - 5.0M Visitors/yr Completed in 1952 71,100 acre water surface (330 ft-msl) Seven turbines capable of generating 364 MW 1,200 miles of shoreline 76 recreation sites

Congressional Authorization   Congressional Authorization Authorized Purpose Hartwell Russell Thurmond Flood Damage Reduction Flood Control Act of 1950 Flood Control Act of 1966 Flood Control Act of 1944 Hydropower Navigation N/A  Water Supply Water Supply Act of 1958 Water Quality Federal Water Pollution Control Act of 1972 Fish and Wildlife Federal Water Project Recreation Act of 1965 Federal Water Project Recreation Act of 1965, WRDA 1986 WRDA 1986 Recreation Federal Water Project Recreation Act of 1965

Pool Schematic The Hartwell Project is the most upstream Reservoir in the Corps 3 project system. The Hartwell conservation pool holds over 1.4 million acre-ft and extends 35 feet from 660 ft-msl to 625 msl.

What is… Induced Surcharge Storage (665 - 674) (Dec 2015) Additional flood storage gained when gates are lifted allowing pool > 665 Flood Storage (660 - 665) used to temporarily store inflows from flood events Conservation Storage (625 - 660) Water Supply Recreation Hydropower Navigation Water Quality Fish and Wildlife Inactive Storage (625 - streambed) Intended for the storage of sediment

Managed as System of Projects We can look at the Savannah River Basin to see a complex system supporting the needs of many different requirements. You are familiar with the three major dams pictured here. Further upriver, Duke Energy operates hydropower dams and GA Power operates run-of-the-river dams. Down river from our dams is Steven's Creek Dam, City of Augusta diversion dam, which diverts into the Augusta Canal, Augusta Levee, and Augusta's New Savannah Bluff Lock and Dam. Every part of the basin affects the other parts, and we must be aware of what is happening in every area to make informed operating decisions. Total Drainage Basin Area -10,580 sq miles 31 31

Collaborating Agencies

Drainage Basins Hartwell = 1294 Square Miles (Local Basin) 1 in. Runoff = 34,799 cfs-days = 1.2 ft. @ 660.0 Russell = 802 Square Miles (Local Basin) 1 in. Runoff = 21,566 cfs-days = 1.5 ft. @ 475.0 Thurmond = 2890 Square Miles (Local Basin) 1 in. Runoff = 87,502 cfs-days = 2.2 ft. @ 330.0

Water Management Objectives Minimize Flood Damages and Loss of Life Provide Maximum Benefit to the Public Water Supply Water Quality Recreation Navigation Hydro-Production Fish and Wildlife Management Flood Risk Management Balance Drought impacts to Project Purposes Follow USACE Environmental Operating Principles Adaptively Manage within Corps Authorities Educate the Public File Name

Balancing Project Purposes Flood Management Level 1 Operation Level 2 Operation Level 3 Operation Normal Operation Level 4 Operation Flood Management Flood Risk Management Guide Curve Navigation Non-Drought Hydropower Mild Drought Drought Level 1 Recreation Drought Level 2 Moderate Drought Fish and Wildlife Drought Level 3 Severe Drought Water Quality Drought Level 4 Catastrophic Drought Water Supply

POOL BALANCING Hartwell vs Thurmond

Precipitation Estimates (Doppler Radar) Data used to make our decisions

USGS Stream Gage Network GOES Satellite RIVER FORECAST CENTER INFLOW FORECAST STREAMFLOW FORECAST

Sources of Inflow Water Withdrawals Loss to Vegetation Inflow from Rainfall Releases from upstream Projects Water Withdrawals Insignificant Loss to Vegetation Seasonally varying Loss to Groundwater Insignificant, slow to recover Releases Limited by current conditions Evaporation… File Name

Average Lake Evaporation Seasonal Evaporation can account for about 25% of the total water leaving the reservoir.

Typical Release Range Flood Operations (30,000 cfs Channel Capacity) Normal Operations (3800 cfs – 30,000 cfs) In-Lake Fish Spawn (keep pools stable in spring) Meet Ecological Flow Needs Meet Hydropower Commitments Drought Management (3100 cfs - 4200 cfs)

Flood Management Flood Damages Prevented (Cumulative) Channel Capacity = 30,000 cfs (Augusta) Release not to exceed Channel Capacity Seasonally Varying Flood Storage Hartwell and Thurmond Operate as a system Minimize downstream flooding/damages Protect the integrity of the Dams Induce additional Flood Surcharge Storage if necessary Flood Damages Prevented (Cumulative) Hartwell $68,887,000 Russell $23,545,000 Thurmond $114,639,000

Drought MANAGEMENT History Objectives First Drought Contingency Plan (March 1989) 0, 4500, 3600 Update 2006 (Adjusted Trigger Flows) 4200, 4000, 3800 Update 2010 (Level 3 adjustment to 3600, Wintertime reduction to 3100) Update 2011 (Clarify Level 4 Operations) Update 2012 (Introduced Broad River Gage, Winter reductions Levels 2 & 3) Update 2014 (New Storage Balance Agreement/Duke Energy) Update 2017 (Currently out for Public Comment) Objectives Balance impacts to authorized purposes Balance impacts between upstream and downstream Elevation Based Triggers, limit releases based on drought severity Maintain an updated Plan

Pool Balancing Procedure Hartwell Russell Thurmond 665 480 335 660 475 330 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Level 1 Level 1 470 Level 2 Level 2 Level 3 Level 3 Level 4 312 Once the pools have declined more than 15 feet we balance Hartwell and Thurmond based on the percent of Conservation pool depth remaining 7:1 Then we balance the Hartwell and Thurmond pools foot for foot while in the top 15 feet of their respective Conservation pools 1:1 The lakes were designed to meet specific authorized project purposes. There is a limit as to how far each lake elevation can fluctuate. Lake Hartwell’s pool is designed to operate between full pool and 625 ft. mean sea level. Full pool varies seasonally between 660 ft. mean sea level during the summer months, and 656 ft. mean sea level in the winter months. This normal range of fluctuation is called the conservation pool. The size of the conservation pool is designed so that during dry periods a specific rate of release can be maintained to meet downstream flow requirements for water quality, water supply and hydropower. If we were to further limit the amount that the pool could be drawn upon, then we could not meet these needs. It is very important to note, that contrary to popular misunderstanding and rumors, we have been releasing only enough water to meet state mandated water quality and related supply needs since May of 1999. The average release at Lake Thurmond since that time was 4283 cubic feet per second. The average since September 12, 2002, the date we hit trigger level 3, was 3470 cubic feet per second. During Flood Control Operations we evacuate the downstream flood storage first Level 4 625

Storage Balancing Procedure (USACE and DUKE) USACE Projects Duke Projects The Duke Projects have limited flood control storage. The USACE projects utilize their Flood Control Storage to lessen the effects of flooding on Augusta. 800 660 Level 1 - 82% USACE requires no release from KEOWEE until the USACE projects reach 90% conservation storage remaining. Level 2 – 73% Percent of Conservation Storage Remaining Once the USACE Projects reach 80% conservation storage remaining, the Duke Projects will release to match the remaining conservation storage. Level 3 – 43% Keowee 800-790 Jocassee 1080-1110 Bad Creek 2310 – 2150 Hartwell Guide Curve – 625 Russell Guide Curve (475) – 470 Thurmond Guide Curve - 312 No required release from Duke Projects if Dukes % conservation storage is less than 12% 625 Bad Creek Jocassee Keowee Hartwell Russell Thurmond

Where To From Here? Is the Drought over??? Not Yet… Continue with release restrictions per Drought Plan

Questions?

WATER MANAGEMENT WEB PAGE http://water.sas.usace.army.mil

MOBILE APPLICATION http://water.sas.usace.army.mil/smart

A Notice of Availability of a Draft Environmental Assessment Savannah River Basin Comprehensive Study Interim #2 Released to the Public on June 12, 2017 Public Workshop 12 July 17 @ 2:00 to 4:00 PM North Augusta Municipal Building, Palmetto Terrace 100 Georgia Ave, North Augusta, SC 29841 Savannah District, U.S. Army Corps of Engineers, Planning Branch Comments will be taken until: ATTN: Mr. Nathan Dayan (PB) 12 O'CLOCK NOON, July 13, 2017 100 West Oglethorpe Avenue Savannah, Georgia 31401-3640, by FAX: 912-652-5787 or by emailing: CESAS-PD@usace.army.mil. The reports can be found at: http://www.sas.usace.army.mil/About/Divisions-and-Offices/Planning-Division/Plans-and-Reports/