Water, Water Everywhere

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Water, Water Everywhere

• Finding and Using
• Hydrography Data

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USGS Hydrography Products (Geospatial)

• NHD - National Hydrography Dataset
• EDNA - Elevation Derivatives for National
  Applications
• NHDPlus

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Overview of National Hydrography Dataset (NHD)

• A Framework dataset that includes
• Hydrographic features for making maps
• A national stream addressing system
• A modeling network for navigating
  upstream/downstream
• A maintenance infrastructure

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Overview of National Hydrography Dataset (NHD)

• A Framework dataset that includes
• User updates
• Distributed formats personal geodatabase,
  shapefiles, coverages
• Compatible with ArcHydro Model Tools

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Overview of National Hydrography Dataset (NHD)

• Resolution or Scale
• Medium Resolution, 1100K scale
• High Resolution, 124K scale or better
• Local Resolution, limited availability, from 15K
  source

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Medium Resolution NHD, 1100K
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High Resolution NHD, 124K
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High and Medium Resolutions
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NHD Features
Stream/River Pipelines Ditches/canals
Artificial Paths Connectors Underground
Conduit Coastline Lake/pond
Drain features
These features receive the reach code number
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NHD Features

• Underground Conduit represents underground
  streams/drains particularly for karst and
  volcanic geomorphology.
• Artificial Paths represent flow in rivers and
  lakes that are represented as 2 dimensional.
• Connector connects flow between two streams,
  ditches, or a combination of drain features.

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Reach Code

• Assigned to drain features, (streams, canals,
  pipelines, connectors, artificial paths)
  coastlines and lakes
• Is a numeric code that uniquely labels each reach
  Is a permanent identifier and occurs only once
• Contains 14 digits
• First 8 digits represent the subbasin
• Last 6 digits are assigned sequentially, but
  applied arbitrarily

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Reach Code
05120208 05 Region 0512 Subregion 051202
Basin 05120208 Subbasin
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Reach Code
05120208 (Subbasin) 000262 (arbitrary) reach
code
05120208000262
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Event Tables

• Point
• Line
• Area

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National Water Information System (NWIS)
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High Resolution Status for U.S.A.
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High Resolution Status for Indiana
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Download NHD data

• http//nhd.usgs.gov

1.) Click Data button
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Download NHD data

• http//nhd.usgs.gov

• 1.) Click Data button
• 2.) Click Viewer Button

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Download NHD data

• http//nhd.usgs.gov

• 1.) Click Data Button
• 2.) Click Viewer Button
• 3.) Zoom to Area

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Download NHD data

• http//nhd.usgs.gov

• 1.) Click Data Button
• 2.) Click Viewer Button
• 3.) Zoom to Area
• 4.) Zoom to State

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Download NHD data

• http//nhd.usgs.gov

• 1.) Click Data Button
• 2.) Click Viewer Button
• 3.) Zoom to Area
• 4.) Zoom to State
• 5.) Highlight Subbasin

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Download NHD data

• http//nhd.usgs.gov

• 1.) Click Data Button
• 2.) Click Viewer Button
• 3.) Zoom to Area
• 4.) Zoom to State
• 5.) Highlight Subbasin
• 6.) Refine Search

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Elevation Derivatives for National Applications
http//edna.usgs.gov
Primary purpose is for watershed boundary
delineation and network navigation.
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Elevation Derivatives for National Applications

• Data Layers
• Aspect
• Contours
• Filled DEM
• Flow Accumulation
• Flow Direction
• Reach Catchment Seedpoints
• Reach Catchments

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Elevation Derivatives for National Applications

• Data Layers
• Shaded Relief
• Sinks
• Slope
• Synthetic Streamlines

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Elevation Derivatives for National Applications
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Elevation Derivatives for National Applications
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NHDPlus
Medium resolution, 1100K scale
http//www.horizon-systems.com/nhdplus/data/NHDPLU
S_UserGuide.pdf http//www.horizon-systems.com/nhd
plus/
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NHDPlus

• An integrated suite of application-ready
  geospatial surface water data products.
• Its the first national effort to integrate
• National Hydrography Dataset (NHD)
• National Elevation Dataset (NED)
• National Watershed Boundary Dataset (WBD)
• National Land Cover Dataset (NLCD)

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NHDPlus

• Greatly improved 1100K NHD
• PLUS (8 more components)
• Value Added Attributes
• Elevation-based Catchments
• Catchment Characteristics
• Headwater Node Areas
• Cumulative Drainage Area Characteristics
• Flow Direction, Flow Accumulation, and Elevation
  Grids
• Min/Max Elevations and Slopes
• Flow Volume Velocity Estimates

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Examples of NHD Applications
StreamStats
http//water.usgs.gov/osw/streamstats/ssonline.htm
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Thanks for your attention!