(a) On establishing a stormwater management district, Montgomery County and Prince George’s County each shall: (1) establish a stormwater management fund; and (2) deposit in the fund: (i) receipts and revenues from an ad valorem tax imposed under § 21–623 of this subtitle; and (ii) charges, fees, fees–in–lieu, and other contributions received from any person or governmental unit in connection with stormwater management activities or practices. (b) Money in a county stormwater management fund shall be used only to pay for the costs of stormwater management as set forth in § 21–623(a) of this subtitle.
Maryland Legal Code