User:Davetoo/NHD

My Stuff

Stuff I worry about

Database explosion

• Some of the uploads I've looked at, had nodes tagged with attributions and such; we don't want to make the same mistake as on the TIGER uploads.
  • {{User/Davetoo/Todo|look at more

Artificial paths

• How do the tools/operators know when these are meaningless/redundant?
• pipelines?

Stuff I'm doing

• My original DRAFT Table of NHD Feature Codes vs. OSM features

Other People's Stuff

[Project Page]

DRAFT Table of NHD Feature Codes vs. OSM features

Notes

The TOC for the Hydrography Feature Dataset will list six Feature Classes:

• HYDRO_NET_Junctions – Nodes between NHDFlowlines used by the geometric network for flow navigation.
• NHDFlowline – The core linear network of the surface water drainage system primarily consisting of streams, and artificial paths through polygons.
• NHDWaterbody – Polygons representing areal hydrographic waterbody features such as lakes.
• NHDPoint – Points representing hydrographic landmark features.
• NHDLine – Line features representing linear hydrographic landmark features.
• NHDArea – Polygons representing areal hydrographic landmark features.

-- http://nhd.usgs.gov/NHD_QuickStart_Sept_05.pdf

Links

• NHD Home
  • Standards for National Hydrography Dataset - High Resolution
    • Attributes definitions and values
• National Geospatial Program Standards --
  • Part 5 symbols
  • Part 6 symbols