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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 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 • Forecasting Model • Information to the Public • Products • Salaries
California’s GeographyThe Big Obstacles The Transverse Mountain Range The Delta
Division of Flood Management • Hydrology • Forecasting (our section) • Snow Surveys • Flood Operations • Floodplain Management • Project Integrity & Inspection (levees)
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
Hydrologic Regions • North Coast • San Francisco Bay • Central Coast • South Coast • Sacramento River • San Joaquin • Tulare Lake • North Lahontan • South Lahontan • Colorado River-Desert
River Stages Defined Typical Non-Leveed Stream Typical Leveed Stream
Post-processing - Graphical River Forecast Guidance “Observed” “Forecasted”
National Weather Service CNRFC http://www.cnrfc.noaa.gov/
California Data Exchange Center http://cdec.water.ca.gov/guidance_plots/
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
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
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
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
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