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1
National Hydrography DatasetApplication Symposium
Andrew T. Battin
Senior Information Resource Management Official
U.S. Environmental Protection Agency
Office of Water
December 11-14, 2000
The University of Texas at Austin
2
Geo-Referencing History & Purpose
• A Brief History of the Office of Water – Traditional permitted outfall / intake approach– Watershed emphasis
• Recent Agency Emphases– Multi-media program implementation and
oversight– Place-based initiatives– Information integration
• Why Do We Need Geo-Referencing?
3
OW Needs to Portray and Analyze DataGeographically ...
- Monitoring site- Point source discharge- Drinking water supply- …
Polygons
Points
Lines
- Drainage network - 303(d) listed waters- Designated use waters- 305(b) waterbodies
- Watersheds- Source Water Protection Areas- ...
4
To Best Support Its Mission Needs
• Easy Access from the Desktop and Through the Internet
• Enabling Simple Queries to Complex Analyses of OW & Other Data Resources to Support:
– Public Right-To-Know
– TMDLs
– Water Quality Standards
– Source Water Protection Areas
– Water Treatment Construction Needs
– Permits
– Clean Water Action Plan
– Unified Watershed Assessments
– GPRA
– Consolidated Reporting
– Drinking Water Intakes
– ...
Land Use
Demography
Habitat
States/Counties
Surface W
aters
...
5
How Does NHD SupportWater Programs?
• Geo-Referencing of Water Program Information
• EPA & Public Use of Geo-Referenced Water Information to Support Program Implementation and Oversight
• Systems Integration using the Geo-Referencing Framework
6
Water Program Priorities for Geo-Referencing
• Water Quality Standards
• Total Maximum Daily Loads
• Combined Sewer Overflows
• Sanitary Sewer Outfalls
• Tribal Boundaries & Facilities
• Drinking Water Intakes
• Source Water Protection Areas
• Sediments• Nutrients• Stormwater Drains• Beaches• Fish Advisories• STORET Monitoring
7
• Enable simple queries– Locate all permitted
facilities on a river section
• Modeling and other complex analyses– Calculate TMDL for a
river section
• Static & Dynamic Maps and Database Access
Land Use
Demography
Habitat
States/Counties
Surface W
aters
...
EPA & Public Use of Geo-Referenced Water Information
8
Integrated Systems using the Framework
Reach Address Database
NHD Reach Indexing Tool
NH
D R
ea
ch I
nd
ex i
ng
To
ol
Inte
rnet
NHD
WQSDatabase
STORET(modernized)
NationalAssessment
Database
TMDLTrackingSystem
GRTS
ReachID
303(d)Events
TMDLEvents
305(b)Events
TMDLID
WB SegID
ReachID
WQSEvents
Reach ID
WQSID
303(d)List ID
STORET
Events
Reach ID
Agency/Station ID
Agency/Station ID
GRTS
Events
Reach ID
WBSeg ID+ CauseReach
ID
9
The NHD Framework and Other EPA Initiatives
• Reinventing Environmental Information (REI) Data Standards
• Locational Data Improvement Project (LDIP)
• EPA’s Information Integration Initiative (I3)
10
Reinventing Environmental Information Data Standards
• Facility Identification Data Standard
• Latitude/Longitude Data Standard– Point location/documentation
• Geo-Locational Data Standard– Under “development”– To support linear and polygon features
NEW!
11
Locational Data Improvement Project (LDIP)
• Gather existing latitude/longitude point coordinates (with metadata)
• Encourage High Quality, Well-Documented Future Collections
• High Quality Coordinates critical for Geo-Referencing Activities
12
EPA’s Information Integration Initiative (I3)
• Demonstrating Integration through Geography – “Window to my Environment”
• Geo-referencing framework supports place-based integration of information
IV.
13
Summary
• Geo-Referencing of Water Program information
• Query / Modeling Capabilities
• Databases Access and Maps can be Dynamic
• Systems Integration using the Geo-Referencing Framework
• Data Standards are in place and new standards are under development
• Geo-Referencing supports the Agency goal of placed-based integration of information