GIS assists with calculating values for storm water utility fee

Blog_GIS assistswithcalculatingvaluesforstormwaterutilityfee.png

The City includes a Storm Water Fee with every water bill. The
purpose of this fee is to collect money for the maintenance of City
Owned storm sewers. The current fee is based solely on the building
footprint. Over time it has become apparent that this method is not
adequate as it does not include all impervious surfaces. For example a
property with a small building and a large parking lot is only charged
for a small portion of the storm water that runs off the property and
into the city storm sewers.

Therefore it was decided to include Parking lots, sidewalks, and
private roads, along with the buildings to ensure that property owners
were assessed in a more equitable manner. It also had the benefit of
increasing the amount of money collected from Storm Water Utility Fees
without increasing the fees themselves.

The Finance Department approached the GIS Office to create imperious
values for each parcel and tie them to utility billing accounts. The GIS
office created values by merging all impervious features with parcel
features. Addresses were used to tie the Utility Billing Accounts with
each parcel associated with the utility billing account. Finally a table
was created showing the new impervious values with existing impervious
values.

The comparison table was created to show how much of the fees would
increase if all impervious areas are included. It was also used as a
check to verify the accuracy of the GIS data. At this time the new
values are not being used, but they are planned to be added by January
2011. By using GIS the city quickly created impervious values for each
utility billing account and ensure that storm water fees would be
assessed in a fairer manner.

GIS assists with calculating values for storm water utility fee

Blog_GIS assistswithcalculatingvaluesforstormwaterutilityfee.png

The City includes a Storm Water Fee with every water bill. The
purpose of this fee is to collect money for the maintenance of City
Owned storm sewers. The current fee is based solely on the building
footprint. Over time it has become apparent that this method is not
adequate as it does not include all impervious surfaces. For example a
property with a small building and a large parking lot is only charged
for a small portion of the storm water that runs off the property and
into the city storm sewers.

Therefore it was decided to include Parking lots, sidewalks, and
private roads, along with the buildings to ensure that property owners
were assessed in a more equitable manner. It also had the benefit of
increasing the amount of money collected from Storm Water Utility Fees
without increasing the fees themselves.

The Finance Department approached the GIS Office to create imperious
values for each parcel and tie them to utility billing accounts. The GIS
office created values by merging all impervious features with parcel
features. Addresses were used to tie the Utility Billing Accounts with
each parcel associated with the utility billing account. Finally a table
was created showing the new impervious values with existing impervious
values.

The comparison table was created to show how much of the fees would
increase if all impervious areas are included. It was also used as a
check to verify the accuracy of the GIS data. At this time the new
values are not being used, but they are planned to be added by January
2011. By using GIS the city quickly created impervious values for each
utility billing account and ensure that storm water fees would be
assessed in a fairer manner.