Del. Code tit. 23 § 1904
Whoever owns, leases or controls any milldam or millpond upon or across any stream of water shall construct and maintain the dam across such stream in such manner and with such gates and appliances that the waters of the stream shall not at any time be thrown, held or forced back upon the land of any other owner above such millpond to the injury or damage of such other owner.
Whoever violates this section, upon the complaint of the owner of land injured or damaged thereby, shall be fined not more than $10 for each day such violation continues. Whoever offends shall also be liable in pecuniary damages to the owner of land injured by any violation of this section, to be recovered in an action at law. This section shall not apply to the flooding of lands by backwater occasioned by rains or freshets. This section shall apply within the limits of Kent and Sussex Counties only.
23 Del. C. § 1904