Interagency Development of a Reference Set of Watersheds for the United States WBD
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SUBCOMMITTEE spatial water data Interagency Development of a Reference Set of Watersheds for the United States WBD
description
Interagency Development of a Reference Set of Watersheds for the United States WBD. BLM. ACWI. NOAA. CA. USGS. FGDC. NSGIC. USFS. Subcommittee on Spatial Water Data (FACA). FEMA. TVA. COE. NRCS. TX. AK. EPA. ASCE. NWS. NED. NHD. WBD. EDNA. - PowerPoint PPT Presentation
Transcript of Interagency Development of a Reference Set of Watersheds for the United States WBD
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Interagency Development of a Reference Set of Watersheds for the
United StatesWBD
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FGDC
ACWI
SubcommitteeSubcommitteeon Spatialon Spatial
Water DataWater Data(FACA)(FACA)
NRCS
USGS
NOAA
EPA
USFS
TXTX
NSGICNSGIC
ASCEASCE
COEFEMA
BLM
NWS
TVA
CACA
AKAK
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Integration of key Spatial Water Datasets
NED NHD
WBDEDNA
“surface water geospatial
framework”
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Hydrologic Units2-digit= 1st level = 22 regions
4-digit= 2nd level = 222 subregions
6-digit= 3rd level = 789 accounting
8-digit= 4th level = 2223 cataloging
10-digit= 5th level = ~22,000 watersheds
12-digit= 6th level = ~160,000 subwatersheds
new!
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OKOK
TXTX
CCOO
KSKS
NNMM
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Vision:Follow a drop of water from where it falls on the land, to the stream, and all the way to the ocean.
WBD, a “key” part . . .
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Project Status
GOAL: Initial “draft” completed
December 2002
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Watershed Boundary Dataset for Maryland
Explanation
Shaded Areas Represent 4th Level Sub-basins
Watersheds, 5th Level ,HUC10
Subwatersheds, 6th Level, HUC12
Terrestrial hydrologic units completed, coastal 5th and 6th levels are currently being re-delineated by Dr. Randy Ferguson of NOAA.
Recently completed and submitted
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PROBLEMS IN COASTAL AREASPROBLEMS IN COASTAL AREAS
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Subcommitteeon Spatial
Water Data
GuidelinesGuidelinesWork GroupWork Group
Coastal Coastal WatershedsWatersheds
Work GroupWork Group
FGDCHUC Interagency
Guideline
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GeomorphologyGeomorphology
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PROBLEMS IN COASTAL AREASPROBLEMS IN COASTAL AREAS
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NOAA/NOS Implementation
• Pilots• Coastal delineation guidance• state/coast implementation
– Assisting state groups– Workshops– Data and data manipulation– One-on-one with States
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Watershed Boundary Dataset
Item name Width Output Type N.Dec. Example
Linesource 20 20 C - DEM30,DRG24,GPS
Meta_id 4 4 C - OK01
Line Attribution (.aat)
Info File Naming ConventionMO_com_poly MO_com_line
Item name Width Output Type N.Dec. Example
MO_com_poly# 4 5 B - 5
Comment 80 80 C - Levee influenced boundary
WBD metadata/attribution session Thursday morning
Kenny Legleiter
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Current version of the
HUC GUIDELINES . . .
www.ftw.nrcs.usda.gov/huc_data.html
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