A small number of properties (tax parcels) in the City of Madison are in drainage districts. As of 2008 if a parcel is within a drainage district, the city is required to indicate that on the tax bill. If your property is within a drainage district (this applies to less than 5% of the parcels in Madison), you will see a reference to that in the upper right portion of the tax bill. In addition to the name of the district, you will see a dollar sign ($) and a zero. In theory, property within a drainage district could be assessed for work done in that district. If that were the case, the dollar amount of the assessment would be listed. However, for 2013 there were no assessments (therefore, the "$0"). Drainage district work is usually done in rural areas. It is not anticipated that any parcels within the city of Madison will have a drainage assessment in the foreseeable future.