Each year, communities flush their fire hydrants and take note of
flow rate, time flushed, and condition of hydrants. For 2011, the City
of Lake Forest used GIS to aid in visualizing the locations of hydrants
that were found to be in need to attention.
Notes from field work were grouped into subcategories to keep repair
types to a manageable amount. From here, special symbology was given to
each category to make it stand out from the other hydrants that were
displayed on the map. The map was then divided into sections so it could
be printed out at a readable scale on 8.5 x 11 paper, and when
combined, formed a book that could be used in the field.
Having a visual aid to go with normal maintenance should prove to
save time in locating the hydrants and planning of what kind of repairs
will be needed. In addition to this, both the water and fire departments
can see areas of concern where numerous hydrants may not be functioning
properly, which can cause delays in the event that a fire needs to be
put out in that area.