1. Spatial Water Data Subcommitte Update to the FGDC CAG
Bob Pierce, DOI
Tod Dabolt, EPA

2. Vision for a National Geospatial Surfacewater Framework - Mission Accomplished?
NHD
NED
WBD

3. National Hydrography Dataset
Seamless National Coverage
Managed by Hydrologic Units
National Consistency
Uniform Characteristics
Advanced Geospatial Model
Relational/Feature Based
Living Database
Designed for Updates Through Data Stewardship
Analytical Capabilities
Flow Network/Linear Referencing

4. Example of National Hydrography Dataset

5. Medium Resolution NHD

6. High Resolution NHD

7. Local Resolution NHD

8. Integration of NHD and WBD

9. What is NHDPlus?
An integrated suite of application-ready geospatial data sets that incorporate many of the best features of the
National Hydrography Dataset (NHD)
National Elevation Dataset (NED)
Watershed Boundary Dataset (WBD)
NHDPlus includes -
improved NHD names and networking,
value-added attributes (such as stream order) that enable advanced query, analysis and display,
elevation-derived catchments that integrate the land surface with the network,
catchment attributes (such as temperature, precipitation, land cover),
stream flow volume and velocity estimates for pollutant dilution modeling, and
associated flow direction and accumulation grids.

10. The inset map shows the watershed (white boundary) defining the drainage area upstream from the mouth of Four Mile Run (red dot) and a report of associated watershed characteristics – both produced using NHDPlus.

12. National Hydrography Dataset
The Hydrography component of
The National Map
Surface Water of the United States
1:100,000-scale content
1:24,000-scale content
1:4,800-scale content - ongoing

13. National Hydrography Dataset
The Hydrography component of
The National Map
Surface Water of the United States
1:100,000-scale content
1:24,000-scale content
1:4,800-scale content - ongoing

15. Combination of U.S. – Canada Hydrography
St. Croix Subbasin, Maine-New Brunswick
This is an example of the joint U.S. – Canadian St. Croix subbasin between Maine and New Brunswick. The hydrography is well-harmonized and looks uniform despite the fact that it came from two mapping programs.

16. Stewardship Model MAINE CALIFORNIA NEW YORK U.S. FOREST SERVICE
SAN FRANCISCO
BAY ESTUARY
INSITUTE
CITY OF
NEW YORK
MAINE
CALIFORNIA
NEW YORK
U.S.
FOREST
SERVICE
ALABAMA
COLORADO
USGS
Bureau
Land
Management
UTAH
ARKANSAS
DEPARTMENT
ENVIRONMENTAL
QUALITY
KANSAS
STATE
ENGINEER’S
OFFICE

17. The Watershed Boundary Dataset
Drainage to a point
Drainage boundaries for all surface areas
Impartial to boundaries, projects, programs, or agencies
Meets the National Standards for Spatial Data Accuracy (NSSDA)
Uses DOQQ’s or higher resolution imagery, contours of elevation, stream locations and other data to improve accuracy or currency
And carries a suite of useful attribution
Also, could add carries a suite of useful attribution

20. WBD Completed
The nationally consistent and seamless WBD is now completed for the lower 48 states, Hawaii, Puerto Rico and the Virgin Islands, with Alaska to follow this Fall. This significant accomplishment was achieved through partnerships of 10 Federal agencies, 8 different state agencies, local organizations, universities, and Tribes in all 50 states and U.S. territories.
The Watershed Boundary Dataset complements the NHD and supports numerous programmatic missions and activities including:
watershed management, rehabilitation, and enhancement
aquatic species conservation strategies
flood plain management and flood prevention
water-quality initiatives and programs
dam safety programs
fire assessment and management
resource inventory and assessment
water data analysis
water census

21. Next year we will have a combined WBD and NHD
A new way of thinking about Hydrography

22. Watershed Boundary Dataset integration with the National Hydrography Dataset

23. Benefits of a joint WBD/NHD
NHD and the WBD naturally complement each other
Both are used extensively in hydrology, biology, resource management, and pollution control
Improves interoperability of the two datasets, and for users
A single hydrography geodatabase facilitates all aspects of joint stewardship of the two feature databases-NHD and WBD
Joint data distribution services
Joint stewardship operations
Joint program management
Combined operations to the extent possible
Many positive outcomes to have WBD become part of The National Map (TNM)
NHD GeoEdit tool could accommodate WBD edits and provide feature level metadata tracking

24. Stewardship
Stewardship is a partnership between local, state and federal entities to ensure that WBD and NHD data is current, available, and relevant.
NATIONAL RESPONSIBILITIES:
Provide program leadership and management
Work with state stewards to ensure success of WBD/NHD stewardship objectives
Ensure “certification” integrity is maintained in WBD
Assist with technical issues
Support successful integration of NHD and WBD stewardship
DOI recognizes WBD as an authoritative dataset, 2007 Geospatial Blue Print, Table 2.2 USFS-NRIS, NRCS and BLM also key dataset to tie their data to

25. International Border Harmonization
U.S./Canada
U.S./Mexico

26. WBD Coastal Modifications
Washington coast after the 3-nm NOAA marine boundary was applied for the outer limit of the HU. No nearshore limit was applied

27. Integration with Geographic Names Information System (GNIS) Integration
Arizona,