Water Advisory Board March 29, 2016. Annual rainfall 1995-2015.

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Presentation transcript:

Water Advisory Board March 29, 2016

Annual rainfall

O.H. Ivie Reservoir 12.6% full as of Historical levels

O.H. Ivie Reservoir 12.4% full as of Current storage – 68,761 acre-feet

Twin Buttes Reservoir 12.0% full as of Historical levels Current storage – 21,287 acre-feet

O.C. Fisher Reservoir 15.9% full as of Historical levels Current storage – 18,406 acre-feet

E.V. Spence Reservoir 9.1% full as of Historical levels Current storage – 47,281 acre-feet

O.H. Ivie Reservoir Rainfall vs. Water storage

O.H. Ivie Reservoir Rainfall vs. Water storage March 2016

Recent San Angelo water demand

Per capita daily water use State average: Total water use -167 gallons Residential -85 gallons San Angelo: Total water use -116 gallons Residential -65 gallons

San Angelo projected water demand Year Region F17,72917,90618,08518,15018,24418,42618,61118,79718,98519,17519,366 San Angelo14,67614,87215,07115,27215,47715,68415,89516,10916,32616,54616,769

Water Supply Options

Lipan Aquifer - groundwater developed in Tom Green County S Proximity to Ivie Pipeline W 60 – 90 Day Supply Annually O Voluntary Irrigation Suspension Program T Aquifer is susceptible to drought $ N/A

Edwards-Trinity Plateau in Schleicher County S None Known W Availability and Quality O SWIFT Funding T Legal Issues / Permitting $ Estimated Cost $52 M for 4,500 acft/yr

Brackish water Whitehorse & Clear Fork formations S Proximity to San Angelo W Limited Production Capacity and Poor Quality O SWIFT Funding T Drilling Would Be a Wildcatting Operation $ ESTIMATED COST - $65 million for 3,750 acft/yr

Spence transmission line rehabilitation S 3,000 acft/yr yield / 3,000 acft banked ROW / Easements in Place W Low Water Levels O Line could be used for non-Spence water T Currently only 18 months supply $ 2012 Study estimated $17 - $23 M

CRMWD system water S Utilize existing infrastructure Utilizes entire CRMWD inventory W Water Availability not certain O None known T Costly w/ no guarantee of water $ $50 - $75 M

WTWP / Abilene S 8 mgd available W Short term supply O SWIFT Funding T Provides no new water $ $50 - $60 M

Hickory Aquifer S Established well field / Infrastructure W Regulatory Environment O Expand Treatment Facility to 10 mgd T None Known $ ESTIMATED COST – $10.5 M

Ellenburger – San Saba Aquifer S Proximity to Hickory Pipeline W Limited Capacity O None Known T Reliabilty $ ESTIMATED COST - $20 - $30 M

Red Arroyo off-channel reservoir S Captures stormwater in major rain events W Requires Rainfall O SWIFT Funding T Quality / Treatability $ Basin Cost – TBD Advanced Treatment - $50 - $75 M

Direct potable reuse S Drought Resistant Source W Public Perception O Plant Improvements / SWIFT Funding T None Known $ ESTIMATED COST - $136 M

Water Advisory Board March 29, 2016