Elbert CountyRural Water Supply Study

- Workshop 2 -

April 13, 2017

Elbert CountyRural Water Supply Study

- Workshop 2 -

April 13, 2017

Forsgren Associates, Inc.Forsgren Associates, Inc.

DRAFTINFORMATION

Presentation Overview

1. Introduction and Purpose

2. Water Supplies

3. Denver Basin Groundwater ReviewDenver Basin Aquifers

Groundwater Trends

4. Future Water NeedsPopulation Estimates / Water Users

Future Water Demands

5. Planning Strategies

6. Water Supply Options

7. Project Alternatives

1. Introduction and Purpose

• Existing County Water Supplies

• Growing Water Demands-> 2035, 2050

• Strategy to Meet Demands

• Planning Options

• 5 Alternatives -> 3 for FurtherStudy

2. Water Supplies

Colorado’s Water Plan (By 2050):• 500,000 AF Water Supply Gap

• 400,000 AF Met by Efficiency, Reuse

PLANNING HAS BEGUN!

2. Water Supplies

Acre-Foot (AF)

2. Water Supplies

Colorado’s Divide• 80% population on East Slope

• 80% water on West Slope

2. Water Supplies

Elbert County Groundwater• Creeks

• Alluvial Water

• Denver Basin Aquifers

• Designated Basins

2. Water Supplies

Water Use In Colorado• >60% leaves state• Remaining: 5.3 MAF:

• 89% Agricultural use

Denver Basin Aquifer Cross Sections

3. Denver Basin Groundwater Review

Aquifer Drawdown Trends

< ADD GRAPHICS >

3. Denver Basin Groundwater Review

County Population Estimates

DRAFTINFORMATION

4. Future Water Needs

Projected Water Demands

(ACRE-FT / YEAR)

DRAFTINFORMATION

4. Future Water Needs

DRAFTINFORMATION

5. Planning Strategies

• Denver Basin Groundwater

Preservation

Drought Supply

• Renewable Water Supplies

Mixture Of Options

A. Reliance on GroundwaterContinue development of Denver Basin aquifersNo water sources pursued

6. Water Supply Options

B. Purchase and Import Renewable Water

Purchase Junior Water Rights – S. Platte River System

Increased Competition

6. Water Supply Options

C. Reuse Water Systems Indirect Potable Reuse

6. Water Supply Options

WastewaterTreatment

Facility

ReuseTreatment

Facility

Wells

WaterTreatment

Facility

D. Increase Surface Storage• Repurpose Small Existing Sites

• Build Large, Centralized Storage

• Large Sites Difficult to Permit

• Evaporative Losses / Maintenance

6. Water Supply Options

E. Aquifer Storage and Recovery (ASR)

< ADD GRAPHICS >

6. Water Supply Options

7. Project Alternatives DRAFTINFORMATION

11,400