Aquifer Storage and Recovery (ASR) and Artificial Recharge (AR)

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					Aquifer Storage and Recovery (ASR)
                  and
      Artificial Recharge (AR)
                Donn Miller
     Oregon Water Resources Department
              Outline

1. Intro to Underground Storage
2. Administrative Processes
3. Feasibility: Key Factors
4. Oregon Case Studies
5. New Oregon Activities
Intro To Underground Storage

             Rainfall
             (supply)




        Water Use
        (demand)




J   F   M    A      M      J     J   A     S      O   N   D
    Winter              Spring           Summer           Fall
What are the Benefits of Underground Storage?


                 Rainfall
                 (supply)




            Water Use
            (demand)




    J   F   M    A      M      J     J   A     S      O   N   D
        Winter              Spring           Summer           Fall
What are the Benefits of Underground Storage?

 • Allows capture and storage of water in
   winter when surface water is abundant.
 • More water will be available for summer
   use and population growth.
 • Improves use of declining aquifers.
 • May increase base flow to streams.
What are the Benefits of Underground Storage?

 • May cause less environmental impact or
   use less surface area than reservoirs.
 • Lower cost than surface storage.
 • Helps plan for expected population growth
   and climate change projections that put a
   premium on the need for water storage
 • Provides water quality improvements
      Methods of Underground Storage



• Infiltration
• Injection
Administrative Processes
  Key Differences between AR & ASR
                                  Aquifer Storage
         Artificial Recharge
Category                           and Recovery
                (1961)
                                      (1995)
                                 Primarily drinking
Water Use Primarily irrigation
                                 water
Recharge Seepage systems,
                                 Injection wells only
 Method Injection wells
         Recharge water
                                 Recharge water must
 Water   cannot impair or
                                 meet drinking-water
 Quality degrade ground-
                                 standards
         water quality
 Key Differences between AR & ASR
                                 Aquifer Storage
         Artificial Recharge
Category                          and Recovery
                (1961)
                                     (1995)
          Permits required to
          appropriate source    Can use existing
 Water-
          water and to pump     rights to store and
 Rights
          recharged ground      recover the water
          water
                                ORS 537.531 to
Governing ORS 537.135           537.534
 Statutes
  /Rules  OAR 690-350-0120      OAR 690-350-0010
                                to 690-350-0030
    Generalized Application Process
             for AR & ASR
 Pre-Application                               WRD issues
   Conference:        Submit application       authorization
arranged by WRD        & supplemental         conditioned by
    with DHS,             reports to           all agencies
   DEQ, DFW                 WRD
  and applicant


                                            Operation
        Apply for additional              monitoring and
       authorization as needed         reporting to agencies
      Feasibility: Key Factors
• What are future water needs?
• Is water available for underground
  storage?
• Is there a suitable hydrogeologic setting
  for underground storage?
• Are the appropriate water rights in place?
• What are the analysis and implementation
  costs?
Oregon Case Studies
     Status of ASR & AR in Oregon


• Active ASR
  sites = 11

• Active AR
  sites = 5
        Status of ASR/AR in Oregon
                Underground Storage (ac-ft) in Oregon

        18000

        16000

        14000

        12000

        10000
ac-ft




        8000

        6000

        4000

        2000

           0
           1975    1980   1985   1990   1995   2000   2005   2010
Oregon Experience: Case Studies
County Line AR: Umatilla/Morrow Counties

• Canal recharge began
  in 1977
• Recharges an average
  of 6,000 ac-ft/year
• Augments Ordnance
  Critical Area gravel
  aquifer for irrigation
• Source water: Umatilla
  River
        Salem ASR: Marion County

• The City began ASR in
  1997
• Stores up to 500 Million
  Gallons/year
• Source Water: North
  Santiam River
• Columbia River Basalt
  aquifer
       New Oregon Activities

• OWSCI: Oregon Water Supply and
  Conservation Initiative

• Feasibility Studies: Water Conservation,
  Reuse and Storage Grant Program

• Research: Umatilla Basin Groundwater
  Storage
  OWSCI: Hydrogeologic Suitability
• WRD staff
  are
  evaluating
  geology
  across the
  state for the
  physical
  ability to
  store water:
  results on the
  web in July
  2009
Feasibility Studies: Grant Program
• Conservation, Reuse, and Storage
  Grant proposal reviews in progress

• Water Resources Commission will
  allocate funds at November meeting

• Projects to begin implementation in
  January 2009
         Research: Umatilla Basin
• Assess
  infrastructure,
  geology,
                               3
  need, water       1
  quality and
  availability to
                           2
  prioritize
  potential
  storage sites
             Conclusions
• Oregon has 2 administrative options:
  ASR & AR
• There are 16 active Groundwater
  Storage sites
• The State of Oregon is currently
  sponsoring 3 Groundwater Storage
  Activities

          www.wrd.state.or.us