Nevada · Area of Critical Environmental Concern
Osgood Mountain Milkvetch
BLM found a natural process here, and its plan calls for special management. BLM's records place at least 3 active mining claims inside the line today, and two grazing allotments cover part of it. It covers 55 acres and was designated May 21, 2015, in the WD RMP 2015. In the plan's name, WD stands for BLM's Winnemucca District and RMP for resource management plan.
One of the 1,120 places the Bureau of Land Management has designated an Area of Critical Environmental Concern. This page shows its line, what BLM found there and what sits inside it.
The line
Who holds the claims
At least 3 claims sit inside this line: 3 active, 3 with a holder BLM names. BLM lists 3 as Active.
- NEVADA GOLD MINES LLC3claims
BLM's mining rules list designated ACECs among the places where mining that disturbs the surface beyond casual use needs a plan of operations BLM approves. Exploration of five acres or less can go ahead on a notice instead.
Grazing allotments
2 grazing allotments cover part of this line. Their permittees aren't named here yet.
- OSGOOD85,535acres
- EDEN VALLEY62,105acres
The nearest areas
- Raised BogNevada · 42 acres · a grazing allotment covering part of it54miles
- East Fork Trout CreekOregon/Washington · 361 acres · a grazing allotment covering part of it76miles
- Owyhee River Bighorn Sheep Habitat AreaIdaho · 143,911 acres · at least 1 active mining claim, 3 rights of way, 10 grazing allotments covering part of it77miles
- Toppin Creek ButteOregon/Washington · 3,998 acres · a grazing allotment covering part of it79miles
- The Tules RNAIdaho · 114 acres · a grazing allotment covering part of it80miles
More from BLM's Nevada office
Every area BLM's Nevada office holdsThe proposed rule
A proposed rule, RIN 1004-AF53, would change how BLM drafts every land use plan, and how it designates ACECs like Osgood Mountain Milkvetch. The comment window hasn't opened: the proposed rule wasn't in the Federal Register at our last check. The Watch sends one email the day it prints.
The rule's abstract
The purpose of this rulemaking is to establish in regulations an updated process for the approval of the development, revision, amendment, and maintenance of land use plans, as provided for by the Federal Land Policy and Management Act of 1976, for public lands administered by the Bureau of Land Management (BLM). Additionally, this rulemaking will provide clarification of the process the BLM uses for designating Areas of Critical Environmental Concern.Unified Agenda entry for RIN 1004-AF53, Publication ID 2026, reginfo.gov (OMB OIRA), read Oct 18, 2026