Arc Hydro for EPA Basins

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Arc Hydro for EPA Basins
David R. Maidment, University of Texas at
Austin Dean Djokic, ESRI, Redlands

• Implement Basins on Arc Hydro now for a region of
  interest
• Examine new environment-wide modeling approaches
  for specific constituents e.g. Mercury, bacteria

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Hydrologic Information System
Arc Hydro Geodatabase
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Arc Hydro Extension for EPA Basins

• Arc Basins
• Builds on core Arc Hydro landscape representation
• Provides additional feature datasets and tables
  to store Basins data

Arc Hydro Feature classes
Basins feature classes
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Arc Basins as one geodatabase
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Arc Basins as two related databases
Connect these two databases using relationships
Geodatabase stores geographic feature classes
Relational database stores purely tabular
information
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National Water Information System
Web access to USGS water resources data in real
time
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Arc Hydro Toolset Ver 1.0
Provides tools for processing raster and vector
data and populating the attributes of the Arc
Hydro data model
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Arc Hydro USA

• Arc Hydro Framework dataset for USA at 1500,000
  scale
• Built from USGS and National Weather Service data
• HydroPoints are active USGS stream gaging stations

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ArcGIS Hydro Data Model
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Streams Drainage Areas Hydrography Channels
Terrain Surfaces Rainfall Response Digital
Orthophotos
Thematic Layers supporting the Arc Hydro data
model (from Michael Zeiler Modeling Our World
Volume 2)
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Data Model Based on Behavior
Follow a drop of water from where it falls on the
land, to the stream, and all the way to the ocean.
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Integrating Data Inventory using a Behavioral
Model
Relationships between objects linked by tracing
path of water movement
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Hydrologic Information System
Hydrologic Analysis and Modeling
Arc Hydro Geodatabase
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Other Arc Hydro Implementations

• USGS
• Stream Stats
• HEC
• GeoRAS
• GeoHMS

Streamstats
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Conclusions

• Chief innovations of ArcGIS
• Network, geodatabase, object modeling
• Chief innovations of ArcHydro so far
• HydroNetwork
• New raster tools and methodology
• HydroID relationships
• Integration of Time and Space in a single system
• Geodatabase convenient for working with large
  vector datasets (use larger packaging units than
  8-digit HUCs)

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Arc Hydro for EPA Basins
David R. Maidment, University of Texas at
Austin Dean Djokic, ESRI, Redlands

• Implement Basins on Arc Hydro now for a region of
  interest
• Examine new environment-wide modeling approaches
  for specific constituents e.g. Mercury, bacteria