Treasure Valley Water Future: Choices and Tradeoffs Choosing a Path - - PowerPoint PPT Presentation

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Treasure Valley Water Future: Choices and Tradeoffs Choosing a Path - - PowerPoint PPT Presentation

Idaho Environmental Forums 7 th Annual Boise River Conference Treasure Valley Water Future: Choices and Tradeoffs Choosing a Path Toward Problem Resolution" Dave Tuthill, PhD, PE August 11, 2010 Outline Water problems loom in


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“Choosing a Path Toward Problem Resolution" Dave Tuthill, PhD, PE

August 11, 2010

Idaho Environmental Forum’s 7th Annual Boise River Conference

Treasure Valley Water Future: Choices and Tradeoffs

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Outline

 Water problems loom in the Treasure

Valley

 One example  What we can do about it

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Prediction…

Relative to water delivery in the Treasure Valley…

Change

is coming between now and 2020

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In Idaho the appropriation doctrine is used for the delivery both surface water rights and ground water rights— “first in time is first in right”

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  • Mrs. Adams
  • Mrs. Adams

Irrigation of Irrigation of 50 acres 50 acres 1.0 cfs 1.0 cfs 6/16/1887 6/16/1887

  • Mr. Black
  • Mr. Black

Irrigation of Irrigation of 60 acres 60 acres 1.2 cfs 1.2 cfs 6/17/1887 6/17/1887

1 miner’s inch = .02 cubic feet per second = 9 gallons per minute 1 miner’s inch = .02 cubic feet per second = 9 gallons per minute

  • Mrs. Clark
  • Mrs. Clark

Irrigation of Irrigation of 500 acres 500 acres 10.0 cfs 10.0 cfs 6/16/1982 6/16/1982

Well Well

Administered by a State of Idaho Water District which hires a Watermaster

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Surface Water Evolutionary Cycle – Boise River

Initial Diversions - 1865 Initial Decrees – 1906 and 1929 Rental Pool – 1990’s Instream Requirements – 1980’s Addition of Storage – 1900’s – 1960’s Initial Water District - 1923

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Ground Water Evolutionary Cycle – Boise River Basin

Initial Domestic Wells – 1860’s Initial Municipal Wells – 1890’s Surge of Supplemental Wells – 1977 Initial Irrigation Wells – 1940’s

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Implementation of Conjunctive Administration

Creation of water rights from surface water and ground water Snake River Basin Adjudication initiated in 1987 Basin poised for Implementation of Conjunctive Administration Fewer than100 recommendations Are unresolved Recommended water rights in Basin 63: 13,000+ domestics 6,000+ non-domestics

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Additional Drivers of Change

 Increasing urbanization  Increased recognition of instream values  Water needs for energy production and

mining

 Impacts of climate change?  A need to coordinate land use planning with

water use planning

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How Water Professionals can Deal with Water Management Change

  • 1. Recognize that conjunctive

administration and other changes are coming

  • 2. Stay abreast of technology
  • 3. Measure, model, improve

understanding

  • 4. Conserve
  • 5. and.. most importantly…
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…seek to develop partnerships in problem solving before the fight is on.

Examples: 1. IEF Water Forums 2. Treasure Valley CAMP 3. City water planning workshops 4. Meetings between surface water users and ground water users

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208-378-1513 Website: Idahowaterengineering.com Email: info@idahowaterengineering.com