(Vale, OR) -- An eight-thousand-dollar reward is offered for information that helps identify the person who started several fires in Malheur County in July. The largest fire, the Cow Valley Fire, burned 133-thousand acres. The fires started early on July 11th near Highway 26 and the Malheur Reservoir. The Cow Valley Fire destroyed homes, outbuildings, livestock, rangeland and irrigation equipment. The Oregon Cattlemen's Association is joining the Bureau of Land Management in offering the reward.