The CUAHSI Hydrologic Information System
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Transcript of The CUAHSI Hydrologic Information System
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The CUAHSI Hydrologic Information System
Presented by Dr. Tim WhiteakerThe University of Texas at Austin
22 February, 2011
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About the Speaker
PhD 2004 Research Associate
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What You Will Learn
• What is the CUAHSI Hydrologic Information System (HIS)
• How to access data in HIS• How to publish data with HIS
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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HIS Connects People with Data
• The CUAHSI Hydrologic Information System (HIS) provides web services, tools, standards and procedures that enhance access to more and better data for hydrologic analysis.
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Niagara Peninsula Decision Support
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What is CUAHSI
• Funded by NSF• Develops infrastructure and
services to advance hydrologic science in US universities
Consortium of Universities for the Advancement of Hydrologic Science, Inc
www.cuahsi.org
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CUAHSI Member Institutions
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CUAHSI Hydrologic Information Systems Project
David R. MaidmentThe University of Texas at Austin
(HIS Project Leader)
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CUAHSI HIS Development2000
2008
2004
2002
2006
HIS Pilot Project
HIS Development Project
CUAHSI Regional Meetings
2010
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too much water
too little water
dirty water
water environment
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How can HIS help?
Just get me the data!
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What’s challenging about data?
- Data formats- Metadata
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Data IntegrationHydrologic
ObservationsGIS Data
Weather and Climate Remote Sensing
Digital Watershed
Currently, the focus is on data from monitoring sites at point locations.
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The Result
• WaterML language for describing water data
• National catalog of water data sources
• Free software for data access
Metadata Catalog
WaterML Standards
Services
Software
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Map integrating NWIS, STORET, & Climatic Sites 56 public services
18,000+ variables1.88+ million sites23.3 million seriesReferencing 5.1 billion data values
Metadata Catalog, October 2010
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Streamflow
2 services7 variables4,363 sites11,484 series9,493,968 records
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WaterTemperature
6 services11 variables11,158 sites22,953 series1,546,841 records
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Bacteria
1 service21 variables4,801 sites15,483 series297,849 records
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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Catalog(Google)
Web Server(CNN.com)
Browser(Firefox)
Access
Catalog harvestSearch
Web Paradigm
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HIS Central
HydroServer HydroDesktopData access
Service re
gistration
Search
Services-Oriented Architecture for Water Data
Catalog harvest
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HIS System Overview
Users(HydroDesktop)
USGS
University
Data
HydroServersData Discovery
Data Access
DataWeb
Service
MetadataCatalog
HIS Central
HIS CentralHydrologic OntologyData
Registration
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Rainfall & SnowWater quantity
and quality
Remote sensing
Water Data
Modeling Meteorology
Soil water
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Point Observations Time Series
A point location in space A series of values in time
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Sources of Observations Data
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Getting Water Data (the old way)Asking for data What comes back
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Point Observations Information Model
Data Source
Network
Sites
Variables
Values
City of Austin
Waller Creek Gauges
Waller Creek at Koenig Lane
Streamflow
0.15 cfs, 15 February, 2011, 2AM
who wherewhat when
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WaterML as a Standard FormatDischarge of the San Marcos River at Luling, June 28 - July 18, 2002
Streamflow data in WaterML
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WaterML Includes Sites, Variables, and Time Series
site
variable
time series
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Web Pages and Web Serviceshttp://www.safl.umn.edu/ http://his.safl.umn.edu/SAFLMC/cuahsi_1_0.asmx
Uses HTML
Uses WaterML
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Web Service Examples
Convert Temperature
Get Streamflow
Web services are resources that your applications can ask to do work for them
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WaterOneFlow Web Service
• Set of query functions– Get Sites– Get Site Info– Get Variable Info– Get Values
• Returns data in WaterML
Data Source
Network
Sites
Variables
Values
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Locations
Variables
Date Ranges
WaterML and WaterOneFlow
GetSitesGetSiteInfoGetVariableInfoGetValues
WaterOneFlowWeb ServiceClient
EPA
UTUSGS
DataRepositories
Data
DataData
WaterML
WaterOneFlow is how you ask for dataWaterML is the data format
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HydroExcel Demo: Introducing
WaterOneFlow
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HIS System – HydroServer
Users
University
Data
HydroServersData Discovery
And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataCatalog
HIS Central
HIS CentralHydrologic Ontology
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HydroServer Goals
• A platform for publishing space-time hydrologic datasets that:– Provides local control of data– Makes data universally available– Is open source (hydroserver.codeplex.com)
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GIS Data
Data Collection
Time Series Data
Historical Data Files
Database
Internet Applications
GetSitesGetSiteInfoGetVariableInfoGetValues
WaterOneFlowWeb Service
WaterML
HydroServer
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Operational HydroServers
http://icewater.usu.edu/ http://www.his.npca.ca/hydroserver/
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Why Publish Data with HIS
Recognition Public serviceCollaboration Cost savings
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What Have We Covered
• HIS Overview• HydroServer
– WaterOneFlow– WaterML
Users
University
Data
HydroServersData Discovery
And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataCatalog
HIS Central
HIS CentralHydrologic Ontology
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HIS System – HIS Central
Users
University
Data
HydroServersData Discovery
And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataCatalog
HIS Central
HIS CentralHydrologic Ontology
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• Data publishers– Register a service
• Users– Find a service
• Supported by– Metadata Catalog– Hydrologic Ontology
HIS Central
http://hiscentral.cuahsi.org
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Metadata Catalog
Stores description of time series, e.g.,The USGS measures streamflow at Waller Creek
& Koenig with data from 7/31/1968 to the present…
…and you can get the data from here.
Registered services harvested weekly
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Map integrating NWIS, STORET, & Climatic Sites 56 public services
18,000+ variables1.88+ million sites23.3 million seriesReferencing 5.1 billion data values
Metadata Catalog, October 2010
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Streamflow Nutrients
Water Temperature
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Hydrosphere
Biological
ChlorophyllChlorophyll A
Pheophytin
Indicator
Organisms
E. Coli
Fecal Coliform
Chemical
Dissolved
Oxygen
DO Concentration
DO Saturation
Suspended
Solids
Fixed Suspended Solids
Total Suspended Solids
Physical
DischargeGroundwater Flow
Stream Discharge
TemperatureAir Temperature
Water Temperature
Thematic ConceptsCore Concept Property Branch Leaf
Variables
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HydroTagger
Each Variable in your data is connected to a corresponding Concept
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WaterTemperature
6 services11 variables11,158 sites22,953 series1,546,841 records
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HIS Central Web Service• Programmatic methods
to query the national metadata catalog
• Search by:– Location– Variable– Date Range– Data source
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HIS System – HIS Desktop
University
Data
HydroServersData Discovery
And Access
Data Access
Data Registration
WebService
USGS
Data
MetadataCatalog
HIS Central
HIS CentralHydrologic Ontology
Users(HydroDesktop)
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HIS in Familiar Software
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HydroExcel
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HydroExcel Limitations
• Can’t hold much data• No dates before year 1900• Not truly geospatially enabled• Not free
• How can I use HIS in software built to work with HIS from the ground up?
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HydroDesktop• Free, open source solution for HIS data access• www.hydrodesktop.org
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GIS fully integrated with HIS
- Metadata catalog - Ontology keywords - WaterOneFlow/WaterML
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Built-in Analysis
• Tables• Graphs• Editing• Export
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Customizable with Plug-ins
• Community development
• Build on the HydroDesktop framework
HydroModeler
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Outline
• The HIS Story
• HIS components
• Putting the pieces together
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Services-Oriented Architecture for Water Data
WaterML
HIS Central
HydroServer HydroDesktopData access
SearchService
registr
ation
Catalog harvest
Data Publisher
Catalog
User
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Start Using HIS
• HIS Website – his.cuahsi.org
• User Support Specialist – Yoori Choi – [email protected]