This project covers the development of an automated flood warning system that uses real-time rainfall data to predict stream flows and potential flood risk. The system efficiently disseminates information to emergency responders and the public using the web, text, automated calls and other technologies, allowing more time to activate flood-fighting measures and reduce flood damage.
This past fall, we have upgraded to a more stable hydrologic modeling software on the back end. During the very wet 2017 season, the previous software was stress tested and issues relating to system automation were revealed. The “simpler modeling” strategy we had going into the wet season could not get around the software limitations. So far, it has proven to be extremely stable and less error prone than the old software.
The current system has 5 locations: Upper Guadalupe River, West Little Llagas Creek, San Francisquito Creek, Uvas Creek, and Upper Penitencia Creek. The point on Coyote Creek near Anderson Dam has been deferred to the National Weather Service’s River Forecast Center, and the point on Lower Silver Creek was removed due to the improvement near the Dobern Pedestrian Bridge, eliminating flood risk.
Over the next year, we will focus on completing forecast points for flood prone reaches, including reservoir inflow locations as well, most likely totaling over 7 total locations. Once the hydrologic models are accurate and complete, we will shift our energy to improving the website and the information dissemination services.
Updated January 2019
No current documents.
Key Performance Indicator for the Safe, Clean Water Program
Map, install, and maintain gauging stations and computer software on seven flood-prone reaches to generate and disseminate flood warnings.
Enhances interagency response to storm-related emergencies
Improves the accuracy of flood forecasting services
Helps municipalities and neighborhoods lessen flood impacts
Maintains access to technical resources that assist municipalities with floodplain management
Promotes community awareness of flood risks
Implements risk reduction strategies consistent with the Federal Emergency Management Agency's (FEMA) Community Rating System as appropriate
Geographic Area of Benefit
About the Safe, Clean Water and Natural Flood Protection Program
In November 2012 the voters of Santa Clara County overwhelmingly approved Measure B, the Safe, Clean Water and Natural Flood Protection Program, as a countywide special parcel tax for 15 years with a sunset date of June 30, 2028. This Program replaced the Clean, Safe Creeks and Natural Flood Protection Plan, which voters approved in November 2000.
The Safe, Clean Water Program was developed with input from more than 16,000 residents and stakeholders and was created to match the community’s needs and values. The voters of Santa Clara County identified five priorities:
Priority A: Ensure a Safe, Reliable Water Supply
Priority B: Reduce Toxins, Hazards and Contaminants in our Waterways
Priority C: Protect our Water Supply from Earthquakes and Natural Disasters
Priority D: Restore Wildlife Habitat and Provide Open Space
Priority E: Provide Flood Protection to Homes, Businesses, Schools and Highways
Other: Six projects from the Clean, Safe, Creeks Plan have been carried forward into the Safe, Clean Water Program.
Each year, the District prepares a report providing a progress update for each of these Program priorities, along with fiscal year accomplishments.
To ensure transparency and accountability to the voters, the ballot measure also created an Independent Monitoring Committee, appointed by the Santa Clara Valley Water District Board of Directors. The Independent Monitoring Committee annually reviews the Program’s progress to ensure the outcomes are achieved in a cost-efficient manner and reports its findings to the Board.
In addition, the Program requires three independent audits, the first of which was conducted in FY 2017.