Frequently Asked Questions
Click on a question below to view the answer. If you still need more
information, e-mail firstname.lastname@example.org or call the
toll-free help line at 1-800-844-0638.General
How do I get the ADB v.2?
You can get the ADB v.2 by downloading it from the Tools section. You
can also call EPA's toll-free help line at 1-800-844-0638 or send an
e-mail to email@example.comHow do I create a meaningful Assessment Unit ID?
When designing an ID scheme, several important factors
should be considered:
- The list of IDs should be able to grow easily
- The IDs should not have to be changed unless the Assessment Unit
- The ID should not contain information that is stored in the
Generally, it is a good idea to start the ID with your state
abbreviation. After that, you could choose to add an 8, 10, or 14-digit
USGS subbasin or other locational information such as abbreviations for
the state basin and watershed. A sequential number at the end is also a
good idea. Here is an example from Colorado that uses the state basin
The first two letters (CO) indicate the state: Colorado.
The second two letters (LC) indicate the State Basin: Lower Colorado.
The last two letters (WH) indicate the State Watershed: White River
Basin. The number at the end (01) is a sequential number and is
independent of the location of the Assessment Unit. Avoid trying
to put too much information into the Assessment Unit ID. You should also
avoid creating IDs that contain information that can change, such as use
support or stream order. The only required conventions for
setting up unique IDs for the Assessment Units (AUs) is that they must
be 50 characters or less.
How do I get the lastest version of the
The most current version of the ADB is ADB v2.3.1. If you
have the ADB installed already, you can update it by going to the File
menu and choosing check for Updates. Don't forget to update the
Database, Tables, and the Software tabs.
Where is the TMDL snapshot stored on my hard
The TMDL snapshot is downloaded and stored at C:\Program
How do I export my category lists or my 303(d)
There are several ways to export data from the ADB. Category
and 303(d) lists are exported by using going to the file menu and
choosing data and then choosing data exports. You may export your 303(d)
list, Category list, and/or 4a, 4b, and 4c lists to a comma separated
file from this screen.
How do I migrate my ADB v.1 database to ADB
Please call call EPA's toll-free help line at 1-800-844-0638
or send an e-mail to firstname.lastname@example.org for help with data