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Interagency Development of the National Watershed Boundary Database (WBD). NWQMC 2002 May 20, 2002. 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 .

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Interagency development of the national watershed boundary database wbd l.jpg
Interagency Development of the National Watershed Boundary Database(WBD)

NWQMC 2002 May 20, 2002


Slide2 l.jpg

BLM Database

ACWI

NOAA

CA

USGS

FGDC

NSGIC

USFS

Subcommittee

on Spatial

Water Data

(FACA)

FEMA

TVA

COE

NRCS

TX

AK

EPA

ASCE

NWS


Integration of key spatial water datasets l.jpg

NED Database

NHD

WBD

EDNA

Integration of key Spatial Water Datasets

“surface water

geospatial

framework”


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NHD Database

National Hydrography Dataset


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NED Database

National Elevation Dataset


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EDNA Database[alias NED-H]

2002

INITIAL PHASE COMPLETE FOR

CONTIGUOUS U.S.!!

STAGE 1


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Hydrologic Units, 1973 Database

2-digit= 1st level = 22 regions

4-digit= 2nd level = 222 subregions

6-digit= 3rd level = 789 accounting

8-digit= 4th level = 2223 cataloging


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Watershed Boundaries Dataset Database(WBD): Why is it needed?

  • 8-digit Cataloging Units too large

  • uniform, widely accepted boundaries

  • Need a standard nomenclature, ID’s, names

  • Speed up basin/drainage area delineation

NRCS, early 1990’s


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Hydrologic Units Database

2-digit= 1st level = 22 regions

4-digit= 2nd level = 222 subregions

6-digit= 3rd level = 789 accounting

8-digit= 4th level = 2223 cataloging

new!

10-digit= 5th level = ~22,000 watersheds

12-digit= 6th level = ~160,000 subwatersheds


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CO Database

KS

NM

OK

TX


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GOAL: DatabaseInitial “draft” completed

December 2002

Project

Status


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2002 Database

23/50


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Review . . . . Database

historically:

NRCS certification

currently:

Subcommittee review

“provisional certification” in

consideration of coastal HUCs


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Guidelines . . . . Database

[Things to think about in delineating the next logical level down:]

  • one unified federal “guideline”, accepted by all agencies

  • Water flows to/through a single point

  • Acreage

    • 5th level, 40,000-250,000 acres

    • 6th level, 10,000-40,000 acres

  • Relatively equal in size.

  • ~5-8 subdivisions of previous level (nested levels)

  • Persistent, modification of existing FIPS/ANSI standard to encompass “watersheds” & “subwatersheds”


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Example of Mapping Criteria Database

RIDGE LINES

DRAIN POINT


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Unified guidelines: Database

  • names

    • region,subregion,basin,subbasin,watershed,subwatershed

    • naming convention for watersheds/subwatersheds

  • numbering

    - headwaters to mouth increasing by one

  • topographic flow

    • natural flow vs man’s pertubations (ditches, canals)

  • enhanced hydrologic attribution

    • ability to move upstream /downstream, karst


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Vision: Database

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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PROBLEMS IN COASTAL AREAS Database

?

?

?

?


Slide21 l.jpg

Subcommittee Database

on Spatial

Water Data

Coastal

Watersheds

Work Group

Guidelines

Work Group

FGDC

HUC Interagency

Guideline


Geomorphology l.jpg
Geomorphology Database


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NOAA/NOS Implementation Database

  • NOAA coordinator – Dr.Randy Ferguson

  • Pilots

  • Coastal delineation guidance

  • state/coast implementation

    • Assisting state groups

      • Workshops

      • Data and data manipulation

      • One-on-one with States


For additional information visit l.jpg
For additional information visit... Database

Current “guidelines”www.ftw.nrcs.usda.gov/huc_data.html

Others

water.usgs.gov/wicp

www.fgdc.gov

rrpierce@usgs.gov

klegleit@nrcs.usda.gov


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the end Database