Transcript California Data Exchange Center

California Data Exchange Center
Hydrologic Database System
[email protected]
http://cdec.water.ca.gov
http://cdec4gov.water.ca.gov
Objectives
• Collect and disseminate hydrologic and
weather information
• Provide a centralized database for user
access
• Provide an early flood warning system
Basic Uses of Database
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Early flood warning system
Monitoring river levels
Water supply forecasting
Planning reservoir releases
Monitor water quality in the Delta
Recreational use of water ways
Essential Functions
Real-Time
Data Collection
Data
Dissemination
Hydrologic
Database
Data
Exchange
Real-Time Data Collection
• Satellite transmissions from remote data
stations (851 stations)
• Microwave radio transmissions from remote
data stations (82 stations)
• Slowly phasing out microwave system due
to cost and better accessibility to satellite
transmissions
Data Exchange
• Electronic transfer of information between
Federal, State and public agencies including
National Weather Service, US Bureau of
Reclamation, US Army Corps of Engineers
• Data from 279 stations are received and
stored in centralized database
• Other information includes summary
reports and real-time images
Data Dissemination
• Government and public access
• Internet Web Server
– (http://cdec.water.ca.gov)
• Intranet Web Server
– (http://cdec4gov.water.ca.gov)
• Ability to display data in various ways:
plots, pictures, photos, maps, etc.
Data Dissemination
Internet
Database
Management
Website
Development
Application
Development
Data
Analysis
Tabular Data
Graphs, Charts
Maps
Images, Photos
Water Supply Forecasting
River/Flood Forecasting
Flood Operations
Snow Pack Surveys
Future Enhancements
• Use of Java application development (JSP,
Servlets, Applets)
• Viewing information using GIS presentation
• Website redesign using new web portal
standards
• Exploring use of web services
Future Enhancements
• Comprehensive database for the Division of
Flood Management that includes inventory
of levees in California, annual levee
inspections, documentation of flood control
systems, levee system evaluations, flood
damage identification, and levee erosion
sites
Future Enhancements
• Forecasted coordinated operations with
reservoir operators
GIS Presentation
CDEC Web Portal
Java Server Pages