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California Department of Water Resources

California Department of Water Resources. Division of Flood Management – Forecasting Section Dave Rizzardo, Senior Engineer, P.E. Mike Anderson, Engineer, Ph.D. B.G. Heiland, Engineer, P.E. UC Davis - March 7, 2006. Outline. California Basics Types of Work Operation/ Coordination

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California Department of Water Resources

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  1. California Department of Water Resources Division of Flood Management – Forecasting Section Dave Rizzardo, Senior Engineer, P.E. Mike Anderson, Engineer, Ph.D. B.G. Heiland, Engineer, P.E. UC Davis - March 7, 2006

  2. Outline • California Basics • Types of Work • Operation/ Coordination • Forecasting Model • Information to the Public • Products • Salaries

  3. California Hydrology Where the Water Falls

  4. California HydrologyWhere the Water Drains

  5. California Demo-graphics Where the People Live

  6. California’s PlumbingHow Do We Get the Water to the People

  7. California’s GeographyThe Big Obstacles The Transverse Mountain Range The Delta

  8. Division of Flood Management • Hydrology • Forecasting (our section) • Snow Surveys • Flood Operations • Floodplain Management • Project Integrity & Inspection (levees)

  9. Forecasting Section Duties • Work with NWS to provide river forecasts • Hydraulic / Hydrologic Modeling • Meteorology • Supply Forecasts • Flood Operations • Hydrometeorological Data Collection • Real-Time Data Collection Network • California Data Exchange Center • Programming – update models into newer languages • Update Intensity Duration Frequency curves • Update Flood Frequency Curves • Climate Change

  10. Hydrologic Regions • North Coast • San Francisco Bay • Central Coast • South Coast • Sacramento River • San Joaquin • Tulare Lake • North Lahontan • South Lahontan • Colorado River-Desert

  11. Operational Hydrology Overview

  12. Flood/Emergency Management Cooperating Agencies

  13. River Stages Defined Typical Non-Leveed Stream Typical Leveed Stream

  14. Flood Forecasting

  15. Post-processing - Graphical River Forecast Guidance “Observed” “Forecasted”

  16. National Weather Service CNRFC http://www.cnrfc.noaa.gov/

  17. California Data Exchange Center http://cdec.water.ca.gov/guidance_plots/

  18. Flood Forecasting • Forecasts for over 80 locations in CA & NV • 1200 rain gages • 600 air temperature sensors • 500 river gages • 120 reservoir elevation gages • Flood Season – late October thru mid-April

  19. Weather station near Lake Almanor

  20. Northern Sierra Precipitation

  21. Snow Water Content

  22. Dec ’05/Jan ’06 weir flow

  23. Moulton Weir, 1997

  24. OUTPUT Regression Equations RUNOFF FORECAST Water Supply Forecasting • Input • Snow Water Content • Precipitation – Current Conditions • Last Year’s Runoff • Runoff – Current Conditions • Historical Snow and Precipitation Accumulation

  25. Products • Publish Bulletin 120 • Water supply index forecasts • April-July runoff forecasts • Snowmelt forecast • Statewide precipitation estimates • Statewide snowpack estimates • Unimpaired flow estimates Available from CDEC website: http:\cdec.water.ca.gov\water_supply.html

  26. Precipitation Statistics

  27. We’re looking to hire • Student Assistants • Hourly pay: $10.79-$16.15 (depending on class standing – Frosh/Soph/JR/SR) • Engineers • With B.S. – start at $42,894/year • With M.S. – start at $49,096/year Note: Engineer salaries can be higher based on prior experience

  28. Salary Breakdown • Range A: no experience • Range B: 1 year experience • Range C: 3 years experience • Range D: have PE license Note: 5% /year raises

  29. Questions?

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