City of Santa Barbara Public Works

Transcription

1 Santa Barbara Water

2 City of Santa Barbara Public Works Paul Casey Acting Public Works Director Rebecca Bjork Acting Water Resources Manager Cathy Taylor, P.E. Water System Manager

3 Water Supplies

4 Capacity - 188,030 AF Cachuma Current Storage - Spilling Annual Yield - 25,714 AF Santa Barbara Allotment - 8,277 AF/yr

5 2007 Capacity - 7,087 AF Gibraltar Current Storage - Spilling Annual Yield - 5,000 AF

6 Groundwater 9 Wells in 2 Basins Safe Yield - 1,400 AF Maximum Yield - 4,000 AF Basin Status Full

7 State Water City Allotment 3,000 AF 2008 Estimate of Availability 25%

8 Recycled Water Water for irrigation and toilet flushing Supplies 800 AF/yr (approximately 5% of total demand)

9 Desalination Originally capacity - 7,500 AF/yr Current capacity - 3,125 AF/yr Plant in deep storage Membranes sold No plan to use in next 5 yrs

10 250,000 Cachuma Storage During Recent Dry Periods Current Dry Period Shown Through November ,000 Acre Feet of Storage 150, ,000 50, Present Stage 1 Declared March 1989 Stage 3 Declared Feb Spill Year Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Water Years Since Full Cachuma

11 City of Santa Barbara Per Capita Potable Water Usage (Gallons per person per day - Total Potable Production Divided by Population) Calendar Year

12 Water Conservation Ongoing Efforts Free Water Check-ups: Rebates Green Gardener Training Media Campaign City Facilities Assessments Smart Irrigation Controllers Watering Index Landscape water budgets

13 Future Issues State Water Rights Hearing on Cachuma Balancing water supply with fish protection Post-Zaca Fire Impacts on the Watershed Loss of water storage capacity Degradation of water quality Plan Santa Barbara

14 City s Water System Water pressure - minimum of 20 psi per AWWA recommendations. Water system is designed to fight structure fires. Fire flows - designed for one fire hydrant to flow 750 gpm for two hours on a maximum-daydemand.

15

16 Upper Tunnel Zone Water Storage: Tunnel Reservoir (million gallon capacity) and hydro-pneumatic tank were constructed in the mid-1970's. 100 kw emergency generator w/ automatic transfer switch. 675 gallon diesel fuel tank for up to 66 hours of run time. Monitored by SCADA for reservoir level, pressure, chlorine levels, and emergency backup power. Water main diameters primarily range between 6 and 12 inch diameters. System maintenance includes annually flushing the fire hydrants and cleaning the reservoir.

17 Recent System Improvements Cater Cross Tie Pump Station Pump station and water main that provide a direct connection between Cater WTP & Tunnel Reservoir Tunnel Reservoir Slope Stability Project Slope repair and erosion control Tunnel Reservoir Rehabilitation Project Coated tank in/outside. Installed a mixing system Mission Cyn Rd/Paseo Del Ocaso Water Main Improved water delivery and added two fire hydrants

18 Upcoming Projects Pump efficiency testing with SCE Asset Management Magnetic meters for improved flow monitoring at the reservoirs and pump stations.

19

20 Gibraltar Reservoir

21 Gibraltar Reservoir Pass Through Agreement

22