NOTICE: PhillyWatersheds.org has been archived.
The archive will be available at http://archive.phillywatersheds.org for approximately one year (through September 2020). If you use or are responsible for content here that is not yet available elsewhere, please contact the PWD Digital Team.
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 |
wClick one of the letters above to be taken to a page of all terms beginning with that letter.
- GIS
Geographic Information Systems
- grade
a slope, usually of a road, channel, or natural ground specified in percent
- groundwater
water beneath the earth’s surface that supplies wells and springs and is often between saturated soil and rock
- groundwater recharge
the replenishment of existing natural underground water supplies from rain or overland flow