Water Advocacy Task Water Advocacy Task Force Presentation Force - - PowerPoint PPT Presentation

Water Advocacy Task Water Advocacy Task Force Presentation Force Presentation

Source Water Utilization Tool Source Water Utilization Tool March 27, 2008 March 27, 2008

• Review of WATF Recommendation

Review of WATF Recommendation

• Source Water Utilization Goals

Source Water Utilization Goals

• Approach

Approach

• Interested Parties

Interested Parties

• Historical Data & Document Reviews

Historical Data & Document Reviews

• Development of SWU Tool

Development of SWU Tool

• Overview of SWU Tool

Overview of SWU Tool

• Discussion

Discussion

Presentation Outline

Recommendation by WATF

“… “…the City should adopt a water source use the City should adopt a water source use management plan to ensure optimal use of all management plan to ensure optimal use of all surface and groundwater sources available to the surface and groundwater sources available to the

• City. Municipal, industrial, natural resource, and
• City. Municipal, industrial, natural resource, and

recreational uses should be considered in the recreational uses should be considered in the development of the plan. development of the plan.

• This approach:

This approach:

• Maximizes resources in drought and wet

Maximizes resources in drought and wet periods periods

• Provides the necessary flexibility for operation

Provides the necessary flexibility for operation

• Protects water supplies for the future

Protects water supplies for the future

Source Water Utilization

Current Portfolio Galleries Surface Water Wells

• Portfolio # 1 utilizes aquifer storage when necessary (drought)
• Portfolio # 2 allows aquifer to recharge during wet periods

Surface Water Galleries Portfolio # 1 (Dry Year) Portfolio # 2 (Wet year)

Peak

Wells Wells Galleries Surface Water

Demand

Historical Pactola Levels

Historical Aquifer Levels

USGS 440326103180702

3380 3390 3400 3410 3420 3430 3440 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 DATE

WATER LEVEL ALTITIUDE IN FEET MADISON AQUIFER OBSERVATION WELL NEAR JACKSON SPRINGS

Source Water Utilization

Current Portfolio Galleries Surface Water Wells

• Portfolio # 1 utilizes aquifer storage when necessary (drought)
• Portfolio # 2 allows aquifer to recharge during wet periods

Surface Water Galleries Portfolio # 1 (Dry Year) Portfolio # 2 (Wet year)

Peak

Wells Wells Galleries Surface Water

Demand

• Provide a

Provide a simple simple and and useful useful tool that tool that will allow the operational staff to will allow the operational staff to

• ptimize use of the City
• ptimize use of the City’

’s raw water s raw water resources, while considering the resources, while considering the needs of all interested parties. needs of all interested parties.

Goal of SWU Tool

• Identify Interested Parties

Identify Interested Parties

• Collect documents and review

Collect documents and review agreements agreements

• Determine variables of interest

Determine variables of interest

• Analyze historical data

Analyze historical data

• Develop scoring methods

Develop scoring methods

Approach

• For the purposes of this tool,

For the purposes of this tool, Interested Parties Interested Parties were defined as were defined as entities that: entities that:

• Have water use or source water

Have water use or source water agreements with the City agreements with the City

• Can be directly impacted by the City

Can be directly impacted by the City’ ’s s use of water rights use of water rights

• Can directly impact the City

Can directly impact the City’ ’s ability to s ability to use their water rights use their water rights

Interested Parties

• City of Rapid City

City of Rapid City

• Water customers

Water customers

• South Dakota Game Fish & Parks

South Dakota Game Fish & Parks

• Pactola

Pactola Marina & Recreation Marina & Recreation

• U.S. Bureau of Reclamation

U.S. Bureau of Reclamation

• U.S. Geological Survey

U.S. Geological Survey

• South Dakota Department of

South Dakota Department of Environment and Natural Resources Environment and Natural Resources

Interested Parties

• Rapid Valley Sanitary District

Rapid Valley Sanitary District

• Rapid Valley Irrigators

Rapid Valley Irrigators

• C&J Sanders, Inc.

C&J Sanders, Inc.

• Ellsworth AFB

Ellsworth AFB

• Chapel Valley Water District

Chapel Valley Water District

• Other Madison Aquifer Users

Other Madison Aquifer Users

Interested Parties (cont.)

• Pactola

Pactola Agreement Agreement

• Deerfield Contract

Deerfield Contract

• Bureau of Reclamation Reservoir

Bureau of Reclamation Reservoir Operating Criteria (portion) Operating Criteria (portion)

• Rapid Valley Sanitary District

Rapid Valley Sanitary District

• Agreements & Correspondence

Agreements & Correspondence

• C&J Sanders

C&J Sanders

• Agreement & Correspondence

Agreement & Correspondence

• Pactola

Pactola Level & Release Data Level & Release Data

• USGS Stream Gauge Data

USGS Stream Gauge Data

• Precipitation Data

Precipitation Data

Documents Reviewed

• Level in

Level in Pactola Pactola

• Precipitation

Precipitation

• Stream Flow

Stream Flow

• Gauging station near packing plant

Gauging station near packing plant

• Date

Date

• Pactola

Pactola Agreement & Usage Agreement & Usage

• Pactola

Pactola Minimum Releases Minimum Releases

• Water Demand

Water Demand * * All other variables evaluated were determined

All other variables evaluated were determined to be dependent on one of these variables to be dependent on one of these variables

Variables of Interest

• Operators input values for each variable

Operators input values for each variable and select the sources available for use and select the sources available for use

• Tool calculates a score for each variable

Tool calculates a score for each variable based on: based on:

• Historical data

Historical data

• Time of year

Time of year

• Agreements with other entities

Agreements with other entities

• Other constraints (i.e. minimum creek flows)

Other constraints (i.e. minimum creek flows)

• Scores are tallied and used to indicate

Scores are tallied and used to indicate quantity of surface vs. groundwater to use quantity of surface vs. groundwater to use

Overview of SWU Tool

SWU Tool Variable Inputs

Precipitation Scoring

Pactola Level Scoring

Creek Flow Scoring

Creek Flow Scoring

SWU Output

• Tested Model Using 108 Different

Tested Model Using 108 Different Scenarios Scenarios

• Includes extremes, wet & dry years

Includes extremes, wet & dry years

• Operator/User Friendly

Operator/User Friendly

• Minimal Supervisor Maintenance

Minimal Supervisor Maintenance

• Historical data updated monthly

Historical data updated monthly All All Interested Parties and the City will Interested Parties and the City will benefit from this tool through better benefit from this tool through better utilization of the water resources! utilization of the water resources!

SWU Tool Summary

Questions & Discussion