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Glenn-Colusa Irrigation District Landowner Meeting February 17 and 18, 2009

Glenn-Colusa Irrigation District Landowner Meeting February 17 and 18, 2009. Agenda. Water Supply Outlook Critical Year Scenario: 1994 Recap Projected 2009 Water Supply / Demand Groundwater Supply Conservation Measures Water Rate Analysis Drought Water Bank

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Glenn-Colusa Irrigation District Landowner Meeting February 17 and 18, 2009

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  1. Glenn-Colusa Irrigation DistrictLandowner MeetingFebruary 17 and 18, 2009

  2. Agenda • Water Supply Outlook • Critical Year Scenario: • 1994 Recap • Projected 2009 Water Supply / Demand • Groundwater Supply • Conservation Measures • Water Rate Analysis • Drought Water Bank • Private Landowner Transfer Possibilities • Questions, Comments, Future Topics

  3. 2008- 2009 Water Supply

  4. Inflow To Shasta Lake 2/16/09 Inflow of 1,134 MAF

  5. 1994 Water Year Recap • Critical Year Announced May 9 - 75% Water Supply • Full Planting Allowed • 95,033 Acres Planted to Rice • 526,666 AF Diverted from the Sacramento River • 45,825 AF of Unused Project Water • 46,259 AF of Unused Base Water • 52,200 AF Purchased from Well Owners • 1.85 inches of rainfall between mid-April and mid-May • Only a few days with over 100 degree temperatures • Pumping constraints for the Endangered Species Act

  6. 1994 Water Management and Conservation Measures 10% of growers used Leathers method 30-day holding period for Ordram Notched weir boards required prior to July 15 Impermeable barrier at the tail box (plastic or dirt) No-spill after July 15 Water deliveries terminated 7-days before draining Zero spill at the Davis Weir from July 7 to July 22

  7. 2009 Critical Year Supply / DemandFull Planting with Groundwater Program

  8. 2009 Critical Year Water Supply Crop Demand 667,000 AF Base Water - 540,000 AF Project Water - 78,750 AF Shortfall = 48,250 AF Groundwater from GCID Wells = 6,000 AF Groundwater from Private Wells = 42,250 AF 48,250 AF

  9. Groundwater Supply • 42,250 AF of groundwater needed to meet demand • Approximately 25 wells required (based on 3000 gpm/avg) • Well owners to receive $50.00 per AF • Well criteria / selection process • Location and downstream demand • Flow capacity • Condition of well (must meet all safety standards) • Well owner to supply meter • Water quality

  10. 2009 Proposed Critical Year Water Management and Conservation Measures Rice Irrigation: • Spillage allowed from initial flood to July 1, no spill after July 1 • 2 field drainages and re-floods allowed prior to July 1 at established rice water rate • Rice field flooding depth no greater than 6 inches • Tiered water pricing for excess refloods • Drainage and re-flood for crop stress allowed after July 1 with PCA recommendation at a cost of $24/acre per event • Water delivery must be terminated at least 7-days prior to end of season field drainage • No water available for rice straw decomposition. Could be available under Winter Water Right after November 1

  11. 2009 Proposed Critical Year WaterManagement and Conservation Measures Permanent and Other Crops: • Water must be efficiently managed to minimize the release of tail water • Water must be delivered on a 24-hour basis - no early shutoffs

  12. Critical Year - Additional CostsFull Planting with Groundwater Program • 42,250 AF of groundwater @ $50.00 per AF = $2,112,500 (costs do not include the District groundwater wells) • 65,000 AF of rescheduled water @ $6.50 per AF = $422,500 (Bureau charge for moving base water between months) • Total additional cost = $2,535,000 • Board will need to determine how to allocate costs in 2009 water rates

  13. 2009 Drought Water Bank • South of Delta contractors still wanting to purchase supplies • T-C Contractors to be included in the Bank • Current Delta pumping restrictions and Sacramento River temperature control standards will limit opportunities • Fallowing/Crop shifting will be allowed • Terms: • $275/AF, for rice at 3.3 af/ac yields $907/ac • GCID to retain $100/ac (11%), and the crop water rate • For rice fallowing, fallowed blocks could be limited to 160 or 320 acres due to Giant Garter Snake (issue not resolved)

  14. Private Landowner Actions • GCID is aware that landowners may want to undertake actions to move water from GCID to neighboring Districts • Transferred water must be based on actions taken by landowner, through fallowing or groundwater pumping • GCID cannot facilitate numerous separate individual transfers, but needs to combine these proposed actions into a broader single “Project” • The following actions need to occur: • By February 28, landowners need to identify their proposals and submit their request to GCID • GCID Board will need to review and approve actions • GCID will prepare a “Project Description” and submit to the Bureau of Reclamation for review • An environmental document will need to be prepared; likely require 30-60 days to approve • Cost of program will need to be analyzed

  15. Landowner / Water User Questions and Comments

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