SUSTAINABLE WATER MANAGEMENT PROJECT OVERVIEW Mitch Reid Brad Moore August 2013

SUSTAINABLE WATER MANAGEMENT PROJECT OVERVIEW

ACF STAKEHOLDERSa diverse group representing sectors in all three

states – working together for the first time to achieve a common goal

achieve equitable water-sharing solutions among stakeholders that balance economic, ecological and social values, while ensuring sustainability for current and future generations. After developing a strong organizational

infrastructure and completing a forward-thinking strategic planning process, ACFS is now ready to move forward with the critical next steps, centered around developing a Sustainable Water Management Plan for the Basin.

Through scientific modeling and a shared vision process, ACFS will work to achieve a sustainable solution that works for everyone in the ACF Basin.

ACF BASIN

WHAT IS THE SWMP?Sustainable Water Management Plan

Use of hydrologic modeling of the ACF basin to allow informed decision making

Includes an evaluation of Apalachicola Bay

2011 consensus on a science based approach

Developed specifications and executed RFQ Process

Initiated fundraising campaign Chose contractors and started fall 2011

PROJECT HISTORY

16 March 2011

PROJECT TEAM

Gail Bingham

RESOLVE

TOCWG

FUNDINGInternal contributions

Grants

Task

1:

Work

Pla

n

Task 6: SWMP Model Runs

Sub-Task 6.1: Baseline/Current Conditions Model Runs

Sub-Task 6.2: Model Runs to Evaluate WMA’s

Task 4: Model Inputs – Unimpaired Flows Dataset and Water Balance

Task 3: Model Development

Task 5: Water Management AlternativesTask 5: Water Management Alternatives

Task 2: Performance Metrics: Evaluate Model Results Tasks 7 & 8: Develop

consensus on SWMP

In-stream Flow Analysis

In-stream Flow Analysis

Modeling performed by GWRI Scenarios are be performed using

both ResSim and ACF-DSS.

16 March 2011

Modeling

PERFORMANCE METRICS

Desired lake levelsNavigation windowsEnvironmental flows Flows needed for industry or thermal power

PERFORMANCE METRICS EXAMPLES

NODE Water Supply

ENVIRONMENTAL RECREATION NAVIGATION

Lake Lanier % time ramp rate < .5 ft per day Apr-Jun

% time < 1061 ft

NA

Columbus % time 7-day avg < 1850cfs

% time daily avg < 1350 cfs

% time 7-day avg < 1850cfs

NA

Bainbridge None specified

% time flow is < 15% of UIF avg daily flow

% time > 900 cfs

Jan-May 9 ft channel

Sumatra NA Hi, med,low flow hydrographs

Covered by navigation

Jan-May 9ft channel

ENVIRONMENTAL METRICSPerformed Instream Flow AnalysisUtilized USFWS informationUtilized river keeper’s judgment

HABITAT-BASED APPROACH

Unimpaired inflow (UIF) series represent the natural inflows that would occur if no human development were present

Using latest USACE UIF

UNIMPAIRED FLOWS

WATER BALANCE

1. Water Withdrawals – Tabulation of existing and growth based (future) water users in the basin; includes municipal, industrial, agricultural, and thermoelectric users

2. Water Returns – Tabulation of existing and future returns from municipal and industrial NPDES permit holders

Withdrawals

Returns

Net Consumption = Net Consumption = SSWithdrawals - Withdrawals - SSReturnsReturns

Utilized a panel of experts to review to receive briefing.

Stakeholder meetings to develop WMAs Screening process of WMAs during iterative

model runs.

WATER MANAGEMENT ALTERNATIVES PROCESS

Potential changes to RIOPInterbasin transfersMunicipal conservationAdditional storageAgricultural conservation/limits

WMA EXAMPLES

Baseline runs

Alternative WMA Scenarios (iterative)

MODELING SCENARIO PROGRESSION

19

BASELINE RUNSNo reservoirs, no controls, no consumptionReservoirs with run of river, no consumptionReservoirs with UASCE controls, no

consumptionCurrent conditions including net consumption

FIRST ITERATION RUNSChange consumption in range of +/- 30%Drop all IBT’sRaise Lanier by 2 ft

SECOND ITERATION RUNSTo focus on insights from round one and changes to RIOP

APALACHICOLA BAY IMPACT

Running hydrodynamic bay model to evaluate saline changes

Performing an ecological evaluation of impact to oysters based on salinity changes

2. Problem Definition/Performance Indicators

1. Work Plan

8. Report and Study Dissemination

3. Tailoring of Models to Indicators (ACF-DSS and ResSim)

NOVNOV DECDEC JANJAN FEBFEB MARMAR APRAPR MAYMAY JUNJUN JULJUL AUGAUG SEPSEP OCTOCT NOVNOV DECDEC

4. Data and Information

5. Development of Water Management Alternatives

6. Conduct Iterative Basin Assessments

7. Seek Consensus

OVERALL SUSTAINABLE WATER MANAGEMENT PLAN TASKSOVERALL SUSTAINABLE WATER MANAGEMENT PLAN TASKS

JANJAN FEBFEB

Where are we now?

REPORT DISSEMINATION

25

ACFS WILL CARRY

RECOMMENDATIONS

TO STATES AND

USACE

ANY QUESTIONS ?