How Many Wild Horses Can the Fifteenmile HMA Support?

The Draft DNA asserts that a 2019 EA fully covers the removal of wild horses later this year and constitutes BLM’s compliance with the requirements of the NEPA.

The EA indicates on page 21 (page 24 in the pdf) that five allotments overlap the HMA.

The Allotment Master Report gives management status, acreage and active AUMs.

The EA does not give the percentage of public lands inside the HMA but those numbers can be estimated from the ArcGIS Viewer.

The allotments offer a weighted average 109.7 AUMs per thousand public acres, equivalent to 9.1 wild horses per thousand public acres.

Your faithful public servants claim that public lands in the western U.S. can only support one wild horse per thousand acres (25,500 animals on 25.6 million acres).

The HMA covers 68,607 public acres and has an AML of 230 according to the 2025 population dataset.

The HMA supports livestock equivalent to 347 wild horses, so the True AML would be 230 + 347 = 577.

The stocking rate would be 8.4 wild horses per thousand public acres.

RELATED: Fifteenmile DNA Out for Review, No Announcement.

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