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Impact of GNIS on NHD. By: Katy Hattenhauer ADEQ GIS Manager & AR State NHD Steward October 6, 2010. History of NHD. NHD is standard hydrography coverage for the nation NHD also features flow-direction capability Study cause-and-effect relationships

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impact of gnis on nhd

Impact of GNIS on NHD

By: Katy Hattenhauer

ADEQ GIS Manager & AR State NHD Steward

October 6, 2010

history of nhd
History of NHD
  • NHD is standard hydrography coverage for the nation
  • NHD also features flow-direction capability
  • Study cause-and-effect relationships
  • Many other capabilities such as flow navigation in disasters
  • Therefore, ideally suited for The National Map
  • USGS NHD Stewardship program for States
  • Designed to help with maintenance of NHD
  • Signed MOU 10/15/08
history of nhd in ar
History of NHD in AR
  • Border states – how to fix problem areas
  • Policy making, policy changing decisions
  • AGIO webpage for meeting notes and status map
our goal for arkansas
Our Goal for Arkansas
  • Make state recommendations on strategy moving forward
organization of agencies
Organization of agencies
  • Most of our state agencies have their own water division to handle NHD-type issues
  • APCEC
  • AR GIS Board
water issues in the state
Water Issues in the State
  • A myriad of issues, mostly environmental concerns
  • Flow networks
  • GNIS Names
nhd topo and gnis10
NHD, TOPO, and GNIS
  • 43 segments needing to be fixed
  • 277 potential name changes due to the GNIS name and Stream name being different
  • 713 total unnamed streams in GNIS, but we do have a NHD stream name for them
ditches16
Ditches
  • Cross County, Arkansas
  • 1, 126 ditches
  • Not including some artificial paths which appear to be ditches
  • Some of these have a GNIS name of a creek (e.g., Twomile Creek)
  • The others do not have a GNIS name
  • Most are farm field runoff ditches
ditches18
Ditches
  • Discovered the naming issue when editing Reg 2 and 303d list
  • How do we name these?
  • State agencies are implementing their own naming system for ditches
latest example

Latest Example

Gold Creek

Faulkner County, Arkansas

Site Assessment

derogatory name
Derogatory Name
  • Should we change this ourselves as part of the NHD program?
  • Should we just leave it alone?
  • Even though we’ve had some complaints from the public, if the townspeople aren’t complaining, should we bother at all?
  • Whose call is it to make?
summary solutions
Summary/Solutions
  • NHD GeoEdit Tool
  • Any suggestions are greatly appreciated for ditches!!
  • Submit forms for derogatory names
thank you
THANK YOU!!!

Katy Hattenhauer

hattenhauer@adeq.state.ar.us

501-682-0945