Heber KMIs

What does the new plan look like in terms of key management indicators?

Data from the AML rationale document for the Heber WHT:

  • 19,700 acres available
  • 1,248 AUMs allocated to horses
  • 506 AUMs assigned to privately owned livestock

Other values needed to compute the KMIs:

  • 12 month grazing season for horses
  • 5.6 month grazing season for livestock (determined elsewhere)
  • 600 pounds dry weight per AUM (assumed)

Herd size

  • 104 horses allowed by plan (1,248 ÷ 12)
  • 90 cow/calf pairs allowed by plan (506 ÷ 5.6)

Stocking rate

  • 5.3 horses per thousand acres (104 ÷ 19,700 × 1,000)
  • 4.6 cow/calf pairs per thousand acres (90 ÷ 19,700 × 1,000)

Resource loading

  • 3.2 pounds per acre per month for horses (1,248 × 600 ÷ 19,700 ÷ 12)
  • 2.8 pounds per acre per month for livestock (506 × 600 ÷ 19,700 ÷ 5.6)

Would you say that the WHT is managed principally for wild horses?

During the grazing season, no.  During the off season, when livestock values drop to zero, yes.

Many of the horses currently inhabiting the area will have to be removed to achieve these targets.

RELATED: Forest Service Invites Comments on Heber Management Plan.

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