The East Arm Little Calumet River, also known as the Little Calumet River East Branch, is a 22.1-mile-long stream that flows westward through Porter County, Indiana before emptying into Lake Michigan via the Burns Waterway. As one of Indiana's key Lake Michigan tributaries, this river is an important stocking location for migratory salmonids and offers anglers diverse fishing opportunities throughout the year. The river begins in New Durham Township in LaPorte County and flows west through Porter County, joined by several tributaries including Reynolds Creek, Sand Creek, Coffee Creek, and Salt Creek. Since 1926, when the Burns Waterway was excavated, the river's flow has been diverted directly into Lake Michigan at Burns Harbor, creating a vital migration route for stocked fish.