Project Folders Setup

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Project Folders Setup
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Creating the Directory Structure for NHD
Maintenance
This Powerpoint will describe the suggested
method of creating a directory structure on your
workstation to store NHD data during the
Maintenance Process, and will suggest a naming
convention for each Geodatabase file used in the
NHD Maintenance Process. It is critical to note
that several versions of your Subbasin or
Subregion Geodatabase will be used in the NHD
Maintenance Process, including the original
version in Geographic Coordinates, a reprojected
version in some Projected Coordinate system, a QC
version that will go through many Quality Control
checks, and a final version in Geographic
Coordinates. Please note this is a suggested
directory structure and naming convention, the
user may follow these suggestions, or may create
their own directory structure and naming
convention.
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Open Windows Explorer Navigate to the C or D
drive on your workstation. For this example, the
D drive will be used. Create New Folder
directly under D drive, and rename the new
folder A_NHD_Maintenance. This naming
convention will place the new folder near or at
the top of the D directory structure. All NHD
work will be completed in this new folder.
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In Windows Explorer Navigate into New Folder
A_NHD_Maintenance Create a New Folder under
A_NHD_Maintenance, and rename the New
Folder GNIS. All Geographic Names and
Information System (GNIS) information/shapefiles w
ill be placed in this new folder.
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In Windows Explorer Create a New Folder under
A_NHD_Maintenance, and rename the New
Folder New_Reprojection_Templates. All
templates used to reproject NHD Geodatabase data
will be placed in this new folder. Please note
that several templates exist based on the version
of the Geodatabase file used. Also note that
templates exist to convert geodatabase data to a
Projected Coordinate system and to a Geographic
Coordinate system. A user may access the
reprojection templates from the USGS NHD
Stewardship webpage, http//webhosts.cr.usgs.gov/
steward/index.html.
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In Windows Explorer Create a New Folder under
A_NHD_Maintenance, and rename the New
Folder Reference_Layers. All reference layer
data such as boundary shapefiles, HUC shapefiles,
etc. will be placed in this new folder.
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Get Copy of Latest NHD Maintenance Process
Document Obtain copy of latest version of
NHDMaintenance_Training.htm from USGS. Contact
your NHD Technical Point of Contact to obtain the
latest version. You may have a copy from a
CD-ROM or DVD you obtained during an
NHD Maintenance Training Class. You should
verify with your Technical Point of Contact you
have the latest version!
Folder (NHDMaintenance_Training_17Jan08_files)
is copied with NHDMaintenance_Training_17Jan08.htm
file. Do not delete this folder!
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The NHD Maintenance Training HTML document is
basically a process description document that
lists all steps required to complete NHD
Subregion Maintenance.
HTML document will have hot-links to up-to-date
PowerPoint documents detailing the NHD
Maintenance process.
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Create New Folder for Subregion Maintenance
In Windows Explorer Create a New Folder under
A_NHD_Maintenance, and rename the New Folder
to the Subregion number (4 digit Hydrologic Unit
Code) of the Subregion to be reviewed or
edited. For this example, we will create a New
Folder named 1804.
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In Windows Explorer Create New Folder under
folder 1804, and rename New Folder
to 1804_orig. This folder will contain the
original Geodatabase data.
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In Windows Explorer Navigate to New Folder
1804_orig. Place a copy of the geodatabase to
be edited into folder 1804_orig. Geodatabase
file will typically be in .zip format. Unzip the
original copy of the subregion geodatabase
file. Copy new geodatabase file (NHD75464.mdb)
and paste back to folder 1804_orig. Rename
copy file of original geodatabase to
1804_orig.mdb.
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Remove Geometric Network from original
geodatabase file Open ArcCatalog. Navigate to
folder 1804_orig. Highlight Hydrography
Feature Dataset in 1804_orig.mdb. Remove the
Geometric Network from 1804_orig.mdb by
highlighting Hydro_Net, right mouse click, then
select delete from drop down menu.
Also see Delete_Network.ppt, in maintenance
process.
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In Windows Explorer Create New Folder under
folder 1804, and rename New Folder
to 1804_alb. All editing to the NHD
Geodatabase will be done in this directory!
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In Windows Explorer Navigate to New Folder
1804_alb. Place a copy of the Geographic to
Albers reprojection template (NHD_AlbersEqArea_L48
_v1.06_9.2.mdb) in this folder. Copy new
reprojection template and paste back to folder
1804_alb. Rename copy of reprojection template
to 1804_alb.mdb.
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In Windows Explorer Create New Folder under
folder 1804, and rename New Folder
to 1804_qc. This folder will contain the
Geodatabase file to be reviewed.
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In Windows Explorer Navigate to New Folder
1804_qc. Place a copy of the original
Geodatabase (1804_orig.mdb from 1804_orig) in
this folder. Rename copy of original Geodatabase
to 1804_qc1.mdb.
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In Windows Explorer Create New Folder under
folder 1804, and rename New Folder
to 1804_geo. This folder will contain the
Geodatabase file to be reviewed.
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In Windows Explorer Navigate to New Folder
1804_geo. Place a copy of the Albers to
Geographic reprojection template
(NHD_Geo_DD_L49_v1.06_9.2.mdb) in this
folder. Copy new reprojection template and
paste back to folder 1804_geo. Rename copy of
reprojection template to 1804_geo.mdb.
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In Windows Explorer Create New Folder under
folder 1804, and rename New Folder
to 1804_geo_load. This folder will contain the
final version of the edited Geodatabase file to
be returned to USGS for review and upload.
After completing all editing, the final version
of the Geodatabase will be placed in this folder,
renamed to 1804_geo_load.mdb, and forwarded to
USGS.
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In Windows Explorer Create New Folder under
folder 1804, and rename New Folder
to 1804_backups. This folder will contain
backup files for the Geodatabase file being
edited.
It is suggested to make many backups during the
editing process, and store all backup files in
this folder.
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NHD Geodatabase Files that will reside in project
folders
1804_alb.mdb 1804_Mval_Checked_10_5_06.mdb 1804_ge
o.mdb 1804_geo_load.mdb 1804_orig.mdb 1804_qc1.mdb

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The following slide shows the general process
flow for NHD Maintenance
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Flow Diagram for NHD Maintenance Process
NHD Stewardship Web site
XML Extract
Reproject
XML2pgdb
1804_qc 1804_qc1.mdb Copy of NHD75464.mdb with
transactions applied
1804_alb 1804_alb.mdb All edits performed on this
mdb
Extract from database NHD75464.zip
Corrections?
Yes
Reproject
UnZip
No
Make copy of final 1804_geo.mdb and name
it 1804_geo_load.mdb
1804_geo 1804_geo.mdb 1804_alb.mdb reprojected to
geographic
1804_orig 1804_orig.mdb Save zip file in
this folder
1804_geo_load 1804_geo_load.mdb Used for build
flow, releveler and final XML extract