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Data Stewardship and Maintenance for the National Hydrography Dataset

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Data Stewardship and Maintenance for the National Hydrography Dataset. Gladys Conaway USGS National Geospatial Technical Operations Center III. National Hydrography Dataset. Nationally integrated, seamless, dataset of surface water features. Network Classification Names

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slide1

Data Stewardship and Maintenance for the National Hydrography Dataset

Gladys Conaway

USGS

National Geospatial Technical Operations Center III

national hydrography dataset
National Hydrography Dataset
  • Nationally integrated, seamless, dataset of surface water features.
    • Network
    • Classification
    • Names
    • Inventory (National Identifier) REACH Code
    • Lineage
  • The NHD is the hydrography layer of the National Map
current nhd status
Current NHD Status
  • Medium Res. available Nationwide (1:100K-Scale)
  • High Res. available for 80% of Nation (1:24K-Scale + 1:63K-Scale AK )
    • Partners: EPA, USFS, NPS, and States.
    • National coverage to be completed in 2006
  • Local Res. available for Vermont (>1:24K-Scale)
    • North Carolina – local res. from LIDAR
    • West Virginia – 1:4800 hydro source
phases of the nhd
Phases of the NHD
  • Initial Collection
    • Based on available sources
  • Refinement
    • Based on completing the Network
  • Maintaining Currency
    • Updating - Based on local knowledge
    • Revision
nhd maintenance
NHD Maintenance
  • Goal – keep NHD data synchronized with national holdings
  • Managed as National Repository in GeoDatabase
  • Feature based transactional updates
  • Looking for partners, data stewards
    • Examples: Minnesota, Pennsylvania, New York
  • Develop and use common tools
  • Training kits and user documentation
nhd updates
NHD Updates
  • Geometry
    • Content
    • Revision
  • Flow
    • Flow Direction
    • Adding Connectors
  • Attributes
    • GNIS Name
maintenance and stewardship
Maintenance Documentation available

Maintenance Tools available

Maintenance USGS Support

Stewardship Memorandum of Understanding (MOU)

Proposed Stewardship models

USGS Leadership

Maintenance and Stewardship
nhd maintenance tools
NHD Maintenance Tools
  • NHDnGEO Table Edit
    • Editing Tool in ArcGIS editing environment
  • NHDnGeo Edit Tools
    • Tool limited to updates only
    • Available for release in mid 2006
nhd maintenance support
NHD Maintenance Support
  • Training
    • Tools and procedures
    • Partnership Development
  • Workshops / Seminars
    • User applications
  • Technology Transfer
    • Software and Design
stewardship
Stewardship
  • Distributed Maintenance
    • Typically on a State-by-State basis
    • Suited to regional needs
  • Roles defined in Memorandum of Understanding (MOU)
nhd stewardship models
NHD Stewardship Models
  • Model 1 – Administrative Steward
  • Model 2 – Data Steward
  • Model 3 – Data Steward Serving Data
  • Model 4 – Multiple Stewards
administrative steward

Data Exchange

Administrative Exchange

Tech. Steward A

NHD Update

Tech. Steward B

NHD Update

Administrative Steward

National

Map

NHD

GeoDataBase

1+2

1+2

Approved

list of

Maintainers

NHD Data Users

Coordination

of Data

Maintainers

Administrative Steward

(Adjudicator)

Ex:State Agency

slide15

Forest A

NHD Update

Forest B

NHD Update

NHD Steward

Ex:Forest Service

Data Exchange

National

Map

Data Steward

NHD

GeoDatabase

1

USGS

Data

Distribution

Updates

to

USGS

NHD Data Users

4

2+3

2+3

2+3

2+3

5

Validated

Updates

with

National

Identifiers

FS NHD

GeoDatabase

slide16

Tech. Steward A

NHD Update

Tech. Steward B

NHD Update

State NHD

GeoDatabase

NHD Steward

Ex:State

Data Exchange

National

Map

Data Steward – Serving NHD data

NHD

GeoDatabase

1

USGS

Data

Distribution

Updates

to

USGS

NHD Data Users

4

2+3

2+3

2+3

2+3

5

Validated

Updates

with

National

Identifiers

slide17

Tech. Steward

Forest A

NHD Update

Tech. Steward A

NHD Update

Tech. Steward

Forest B

NHD Update

Tech. Steward B

NHD Update

2+3

2+3

2+3

2+3

FS NHD

GeoDatabase

State NHD

GeoDatabase

NHD Steward

Ex:State

NHD Steward

Ex:Forest Service

Data Exchange

National

Map

Multiple Stewards

NHD

GeoDatabase

Updates

to

USGS

Updates

to

USGS

1

1

4a

4

USGS

Data

Distribution

Validated

Updates

with

National

Identifiers

Validated

Updates

with

National

Identifiers

5

5

4b

NHD Data Users

stewardship and maintenance usgs ngtoc
Stewardship and Maintenance USGS NGTOC
  • Stewardship And Maintenance (SAM)
    • User Support
    • Stewardship Promotion and Development
    • Maintenance Tool Training / Support
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