Losses are not clear.

Following the Battle of Dead Buffalo Lake, Brig. Gen. Henry Hastings Sibley continued his march after the retreating Sioux until he reached Stony Lake, where his animals’ exhaustion compelled him to encamp. On the 28th, the force had started out in pursuit again when Sibley discovered that a large number of Sioux was moving upon him. He ordered the men to make defensive preparations, which many had already accomplished. In the face of enemy, Sibley now resumed his march. The Sioux searched for weak points in the soldiers' position.

Finding none, the Sioux rode off at great speed, preventing pursuit. The Sioux had hoped to halt Sibley’s advance but were unable to do so. Sibley remarked in his report that Stony Lake was “the greatest conflict between our troops and the Indians, so far as the numbers were concerned.”

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eHistory Staff

Selected sources:
American Battlefield Protection Program, Heritage Preservation Services, National Park Service.