Environmental flows policy and implementation l.jpg
This presentation is the property of its rightful owner.
Sponsored Links
1 / 15

Environmental Flows: Policy and Implementation PowerPoint PPT Presentation


  • 56 Views
  • Uploaded on
  • Presentation posted in: General

Environmental Flows: Policy and Implementation. Tyler Jantzen and Shane Walker Transboundary Water Resources November 15, 2005. Presentation Outline. Review of Environmental Flow Concept Implementation of Concept to Policy Case Study: South Africa Case Study: Australia Policy in the U.S.

Download Presentation

Environmental Flows: Policy and Implementation

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Environmental flows policy and implementation l.jpg

Environmental Flows:Policy and Implementation

Tyler Jantzen and Shane Walker

Transboundary Water Resources

November 15, 2005


Presentation outline l.jpg

Presentation Outline

  • Review of Environmental Flow Concept

  • Implementation of Concept to Policy

  • Case Study: South Africa

  • Case Study: Australia

  • Policy in the U.S.

    • Texas Waters DVD

    • Use of Eminent Domain

  • Questions for Discussion


Implementing environmental flows as water policy l.jpg

Implementing Environmental Flows as Water Policy

  • The Science is here (for the most part)

  • The public is mostly unaware of need for Environmental Flow

  • Giving the Environment a primary “right” to water is a paradigm shift for most people

  • Most water rights have alreadybeen allocated and are spoken for


Case study south africa l.jpg

Case Study: South Africa

An Introduction to the Concept of a Water Reserve


South africa water resources a recent history l.jpg

South Africa Water Resources:A Recent History

  • April, 1994: End of apartheid→ A new start

  • Dec., 1996: Constitution signed

  • 1997: “National Water Policy” adopted

  • 1998: “National Water Act” signed into law

  • Aug. 2002: Draft of “National Water Resource Strategy” proposed

  • Sept. 2002: NWRS- 1st Edition adopted


National water act l.jpg

National Water Act

  • Water considered a common asset

  • National and local governments “act in the public trust” to ensure that water used for “the benefit of all persons”

Licensed Users

Schedule 1- Unlicensed Users of Minor Extractions

Ecological Flow

The Water Reserve

Basic Human Needs


The water reserve l.jpg

The Water Reserve

  • Phase 1: Complete

    •  Desktop Model (Minimal data needed; Already exists)

    •  Low level of reliability

    •  Does not account for temporal flow distribution

    • ~20% of flow reserved for Ecological flow + 25 liters per person per day = Water Reserve

  • Phase 2: In Progress

    •  More complex Building Block Model

    •  High data needs, very little data exists

    •  Higher level of reliability- legally defensible

    •  Will account for temporal flow distribution

    • Prescription based on multiple parameters


Water management areas l.jpg

Water Management Areas

National: Department of Water Affairs and Forestry

Regional: Water [Catchment] Management Areas

Local: Water Users Associations

Regional Management Areas


Slide9 l.jpg

The Water Reserve: Ecological Flow


Slide10 l.jpg

The Water Reserve: Protecting Water for “Basic Human Needs”

X 25 L / cap day


Case study australia l.jpg

Case Study: Australia

Water “Cap”


Water resources in australia l.jpg

Water Resources in Australia

  • A water scarce continent

    • However, low population density

  • Rainfall is highly variable in time and space

    • Need for engineered water resource systems

    • One of highest Dam per Capita ratios in the world

  • National government encourages individual basins to implement environmental flow measures

    • The Murray-Darling Basin Commission has taken on one of the most progressive plans in Australia


The murray darling basin l.jpg

The Murray-Darling Basin

  • Large increase in development and water use in 1980s and 1990s.

  • 1995: MDBC implements an interim cap in an attempt to address declining river health

  • 1997: The cap becomes permanent

  • The cap limits diversions to 1993/1994 levels

  • Adjustments are made to account for natural changes in flow (drought)

  • Considered a “first step” towards achieving a sustainable basin ecosystem


U s and texas what are we doing l.jpg

U.S. and TexasWhat Are We Doing?

  • 1977- Thorton, CO acquired water rights from nearby irrigation companies for municipal use using eminent domain

  • 1990s- El Paso expanding groundwater rights

  • Texas The State of Water – Finding a Balance(Texas Parks and Wildlife) Video


Questions for discussion l.jpg

Questions for Discussion

  • How does a government or institution determine an equitable way to allocate water to both “reserve” and users? What level of ecological health is desired? What level of ecological health is reasonable and achievable? How much flow are users willing to forego?

  • How can the methods used by South Africa, Australia, and Armenia be applied to transboundary river basins?

  • How can American water policy makers (either on a local, regional, state, or national level) incorporate the concept of ecological and environmental flow? Should Eminent Domainbe applied to water rights in order to sustain environmental flows?


  • Login