Md. Code, Local Government § 21–627

(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.