Water and Wastewater CommissionNov. 3, 2021

D2 — original pdf

Backup
Thumbnail of the first page of the PDF
Page 1 of 11 pages

Water Supply Outlook Agenda  Water supply overview  Current water supply status • FY21 overview • Water supply outlook  COA-LCRA Partnership update  Other items Water supply overview • Colorado River and Highland Lakes • State-granted water rights & long-term firm contract with LCRA • 325,000 acre-feet per year t e e f - e r c a , e g a r o t S 2,200,000 2,000,000 1,800,000 1,600,000 1,400,000 1,200,000 1,000,000 800,000 600,000 400,000 200,000 Combined Storage of Lakes Buchanan and Travis January 1, 2005 through October 1, 2021 2.01M ac-ft Full Storage Current water supply status 0.6M ac-ft Interruptible stored water for non- Garwood divisions was not provided by LCRA in 2012 through 2015. 0 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15 Jan-16 Jan-17 Jan-18 Jan-19 Jan-20 Jan-21 Jan-22 t e e F - e r c A 225,000 200,000 175,000 150,000 125,000 100,000 75,000 50,000 25,000 0 Highland Lakes Inflows Average 1942 - Present Average 2008 - 2015 2021 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Water supply outlook • Moderate strength La Niña expected to persist through the winter • In TX, La Niña usually results in drier and warmer-than- average weather COA-LCRA Water Partnership  The Water Partnership was created through the June 2007 Austin and LCRA Settlement Agreement  Provides a cooperative management structure through which Austin and LCRA staff can collaborate and more effectively manage both entities’ water supplies and resources COA-LCRA Water Partnership update  Key partnership activities: • Ongoing meetings of the Technical and Water Quality Committee • TCEQ water use reporting • Mussel monitoring and response • Harmful algae coordination • Region K water planning process LCRA Water Management Plan (WMP) New LCRA WMP was approved by TCEQ in Feb. 2020  Key changes from previous WMP: • Updated limits on the releases of interruptible stored water • New max limit on release of interruptible stored water • Updated limits on releases of water to help meet environmental flow needs • Test for declaring Drought Worse than Drought of Record updated to reflect new Drought of Record Other items  Water Forward Supplies • 2018 plan includes strategies to protect our core Colorado River • 2024 plan will include updated climate and hydrology analysis and updated supply needs assessment  AW staff continue to participate with and provide input into regional planning efforts  When needed, AW staff work with state water agencies on water rights issues Questions?