Maryland Tax - Property Section 9-224
§ 9-224.
  (a)   The Mayor and City Council of Baltimore City or the governing body of a county or of a municipal corporation may grant, by law, a tax credit against the county or municipal corporation property tax imposed on real property on which there is located a sediment control pond or stormwater management structure that has been:
    (1)   required by law to be built and maintained on the property; and
    (2)   built and maintained in compliance with the applicable law.
  (b)   A county or municipal corporation may provide, by law, for:
    (1)   the amount of a property tax credit under this section;
    (2)   the duration of a property tax credit under this section;
    (3)   subject to subsection (a) of this section, the definition of a sediment control pond or stormwater management structure qualifying for the credit; and
    (4)   any other provision necessary to carry out this section.