NOTICE: This site has been archived. The archive remains available for reference, but is no longer updated. Please visit water.phila.gov for current information. If there is something you use on this site that you cannot find one water.phila.gov, please let us know by emailing the PWD Digital Team. Thank you!

Glossary beginning with U

terms for which definitions are available

a | b | c | d | e | f | g | h | i | l | m | n | o | p | r | s | t | u | v | w
Click one of the letters above to be taken to a page of all terms beginning with that letter.
unimpaired

natural, unmolested; destribing an unaltered or undisturbed state

USDA

United States Department of Agriculture

USGS

United States Geological Survey