Wyoming · Area of Critical Environmental Concern
Lander Slope ACEC
BLM found a natural system, a wildlife resource, a scenic value, a natural process and a natural hazard here, and its plan calls for special management. BLM's records place 18 rights of way inside the line today, and 41 grazing allotments cover part of it. It covers 90,469 acres and was designated June 26, 2014, in the Lander 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
The rights of way
18 rights of way sit inside the line. BLM files 16 under non-energy facilities and 2 under other energy facilities.
- QWEST CORP4rights of way
- FREMONT COUNTY (Wyoming)3rights of way
- WYOMING DEPARTMENT OF TRANSPORTATION2rights of way
- Holder not listed by BLM2rights of way
- FS1right of way
- MT ARTER ESTATES HOMEOWNERS ASSOC1right of way
- WYOMING GAME & FISH COMM1right of way
- WYOMING STATE OFFICE1right of way
- PACIFICORP1right of way
- HIGH PLAINS POWER INC1right of way
- WASHAKIE RANGER DISTRICT1right of way
Grazing allotments
41 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Allotment USFS-GRZ-10049.01033727,409acres
- Allotment USFS-GRZ-10043.01033722,143acres
- Allotment USFS-GRZ-10045.01033720,530acres
- LITTLE POPO AGIE AMP13,070acres
- Allotment USFS-GRZ-10050.0103379,378acres
- Allotment USFS-GRZ-10052.0103376,917acres
- HARVEY BASIN3,378acres
- ORCHARD DRAW3,058acres
- STEERS 192,607acres
- NICHOLAS 402,318acres
- SPRIGGS 362,200acres
- TABLE MTN 612,164acres
- MADISON CREEK1,992acres
- NORTH FORK RIM1,964acres
- SQUAW CREEK1,579acres
- WUNDER 381,326acres
- MEYER BASIN1,275acres
- TABLE MOUNTAIN 91,217acres
- WILLOW CREEK 241,109acres
- HOPKINS 13545acres
- HORNY TOAD ASSOCIATE523acres
- BEASON CREEK 63477acres
- NORTH FORK474acres
- PINE BAR 21419acres
- DOUBLE A 41280acres
- KAPER 59277acres
- NATURAL LAKE235acres
- JUNIPER HILL200acres
- BALDWIN CREEK 51199acres
- WICKSTROM 17179acres
- SJOSTROM 66169acres
- CRUMP 53164acres
- BOOTH 62161acres
- SCHOOL ALLOTMENT160acres
- BALDWIN CREEK SCHOOL156acres
- FREEMAN 70121acres
- SPRIGGS 57119acres
- DAY 39107acres
- SQUAW CREEK82acres
- HUNTER79acres
- RED BUTTE40acres
The nearest areas
- Red Canyon ACECWyoming · 23,962 acres · 7 rights of way, 9 grazing allotments covering part of it12miles
- Twin Creek ACECWyoming · 65,109 acres · at least 1 active mining claim and 1 more BLM lists as Filed, 1 oil and gas lease, 22 rights of way, 22 grazing allotments covering part of it15miles
- South Pass Historical Landscape ACECWyoming · 158,545 acres · at least 485 active mining claims and 942 more BLM lists as Filed or Under Review, 50 rights of way, 20 grazing allotments covering part of it25miles
- Beaver Rim ACECWyoming · 6,729 acres · 5 rights of way, 4 grazing allotments covering part of it29miles
- Big Sandy Openings ACECWyoming · 1,994 acres · 2 rights of way, 3 grazing allotments covering part of it30miles
Next to it
Red Canyon Area of Critical Environmental Concern and Twin Creek Area of Critical Environmental Concern touch the line.
More from BLM's Wyoming office
Every area BLM's Wyoming 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 Lander Slope ACEC. 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