Emergency crews responded to more than 200 calls for help during Sunday's rainy deluge, including a race to save homes in Melbourne's north from flooding after a dam broke its banks.

At least one home was flooded and a number of other properties came under threat in Craigieburn after a dam failed around 3pm, sending water gushing through the loungeroom of a Central Park Avenue home.

SES crews spent the afternoon sandbagging the dam perimeter, pumping water and clearing drains in an effort to save other homes from also being inundated.

The SES was called to more than 200 jobs across Victoria, mostly around Melbourne, including 85 cases of building damage, 60 call-outs for fallen trees and more than 40 cases of flooding.