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Texas Water Information and Digital Libraries. David R. Maidment Director, Center for Research in Water Resources University of Texas at Austin. Water Problems in Texas. Flooding. Water Quality. Drought. Environmental health. Texas Water Information and Digital Libraries.
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Texas Water Information and Digital Libraries David R. Maidment Director, Center for Research in Water Resources University of Texas at Austin
Water Problems in Texas Flooding Water Quality Drought Environmental health
Texas Water Information and Digital Libraries • Digital Water Information from CRWR • WaterML – internet water data services • Semantic web for water data • How can we move forward together?
Texas Water Information and Digital Libraries • Digital Water Information from CRWR • WaterML – internet water data services • Semantic web for water data • How can we move forward together?
Digital Archiving of Theses, Dissertations and Reports since 1994 at CRWR
CRWR Water Information Services A digital archive that supports Senate Bill 3: Environmental Flows for Texas
http://www.waterdatafortexas.org Water Data Sites
Texas Water Information and Digital Libraries • Digital Water Information from CRWR • WaterML – internet water data services • Semantic web for water data • How can we move forward together?
Consortium of Universities for the Advancement of Hydrologic Science, Inc (CUAHSI) 118 Universities in North America (and 3 in Europe) NSF supports building a Hydrologic Information System (HIS)
Water Observations Data Water quantity Soil water Rainfall Water quality Groundwater Meteorology
Services-Oriented Architecture A services‐oriented architecture is a concept that applies to large, distributed information systems that have many owners, are complex and heterogeneous, and have considerable legacies from the way their various components have developed in the past (Josuttis, 2007).
Web pages Web services We are at a tipping point… Internet Internet Internet WaterML People interact with a remote information server People interact with a network of Information services
HTML as a Web Language Text and Pictures in Web Browser HyperText Markup Language <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>Vermont EPSCoR</title> <link rel="stylesheet" href="epscor.css" type="text/css" media="all" /> <!-- <script type='text/javascript' language='javascript‘ src='Presets.inc.php'>--> </head>
Point Water Observations Time Series A point location in space A series of values in time
WaterML as a Web Language Discharge of the San Marcos River at Luling, TX June 28 - July 18, 2002 Streamflow data in WaterML language
CUAHSI Water Data Services 35 services 15,000 variables 1.75 million sites 8.33 million series 342 million data
Synthesis and communication of the nation’s water data http://his.cuahsi.org Federal Water Data Academic Water Data State and Local Water Data To make a complete picture of water data, we need to be able to add state and local data to national and academic data sources. Regional Water Data Systems
11 services 4,816 variables 15,645 sites 645,565 series 23,272,357 records
Texas Water Information and Digital Libraries • Digital Water Information from CRWR • WaterML – internet water data services • Semantic web for water data • How can we move forward together?
request return return request NAWQA request return return request NAM-12 request return NWIS request return request return return request NARR Data Searching • Search multiple heterogeneous data sources simultaneously regardless of semantic or structural differences between them Searching each data source separately Michael Piasecki Drexel University
NAWQA NWIS NARR HODM Semantic Mediation Searching all data sources collectively GetValues GetValues GetValues GetValues generic request GetValues GetValues Michael Piasecki Drexel University GetValues GetValues
Thematic Concepts Kate Marney, CRWR Core Concept Property Branch Leaf Variables
A Theme Layer Synthesis over all data sources of observations of a particular variable e.g. Salinity
Texas Salinity Theme 7900 series 347,000 data 7900 series TPWD 3400 TCEQ 3350 TWDB 150
Copano and Aransas Bay Salinity Number of Data 0 – 50 50 – 150 150 – 400 400 – 1000 1000 – 3000 Copano Bay Aransas Bay
Texas Daily Streamflow Theme USGS Data 1138 sites (400 active)
Austin – Travis Lakes Streamflow Years of Data 0 – 10 10 – 20 20 – 40 40 – 60 60 – 110
Texas Water Temperature Theme 22,700 series 966,000 data
Texas Water Information and Digital Libraries • Digital Water Information from CRWR • WaterML – internet water data services • Semantic web for water data • How can we move forward together?
Texas Digital Library Members Many of these universities also have a Water Research Center
Senate Bill 3: Environmental Flows Senate Bill 3 passed by the 2007 Texas Legislature Provides for “Environmental Flows” in Texas Rivers and Bays
CRWR Water Information Services A digital archive that supports Senate Bill 3: Environmental Flows for Texas
Senate Bill 3 Information Needs Hydrology Water Quality Government Information Geomorphology Aquatic Biology Academic Information
Conclusions • I think Texas Digital Library is great! • We need to understand better how to integrate digital objects with water data • How to connect TDL and TNRIS? • Is environmental flows a good focus?