Horsethief Basin Lake

Prescott National Forest

Fish Consumption Advisory for Horsethief Basin Lake

Warning for Horsethief Basin Lake located on the Bradshaw Ranger District.  There has been a fish consumption advisory in place since January of 2021 and now the waterbody is being listed as impaired. The EPA will add Horsethief Basin as impaired by methylmercury in fish tissue to Arizona’s 2020-2022 List of Impaired Waters under Clean

Prescott National Forest

Mingus Lake and Granite Basin Lake Fish Die-Off And Swimming/Wading Advisory

Warning for Granite Basin Lake and Horsethief Basin Lake located on the Bradshaw Ranger District and Mingus Lake located on the Verde Ranger District: An increase in vegetation growth has occurred on Granite Basin Lake this summer. As the vegetation dies and decomposes there is greater biochemical oxygen demand (BOD). The consequence of high BOD causes

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