Reborn as a Fisherman's Daughter: Lord River Inspector, Please Control the Floods

In her previous life, floods swallowed her hometown, corrupt officials pocketed the relief grain, and she died full of hatred. Reborn, she stockpiled grain, built dikes, and mapped the currents in advance, hoping only to change her fate. But then the regional river commissioner came to her door in person, asking her to join his staff and help control the floods. She handed him the grain records and maps, then suddenly turned cold. In her previous life, he had ordered the sluice gates opened, flooding the entire county. This time, should she oppose him, or use his power to wipe out every corrupt official?