GMU 163 - Marengo, Washington

Gently rolling to moderately dissected Palouse-edge terrain at 1,200–3,000 ft elevation. The majority of the unit is dryland wheat and cereal-grain farmland on broad upland plateaus. The Tucannon River and several small creeks cut diagonally through the unit, creating narrow riparian strips of tall bunch grass, buck brush, reeds, and willow that provide the primary cover and water for wildlife. The northwest corner grades into dry scabland and sage prairie typical of the Columbia Basin. Large commercial wind farms occupy portions of the plateau. No national forest land is present; the unit sits east and north of the main Blue Mountains block.

97% private, 3% public/state. No Colville NF or Umatilla NF acreage falls within GMU 163. Public access is almost entirely through WDFW's Feel Free to Hunt (FFTH) and Hunt by Written Permission (HWPP) programs, which enroll significant private agricultural acreage. Small scattered DNR and state parcels exist but are limited. Hunters must pre-plan landowner contacts well before the season. Wind-farm operators require completion of online safety forms before accessing leased ground.

Dominant cover types: dryland wheat/cereal grain agriculture (plateau), native bunchgrass and sage scabland (northwest), riparian willow/buck brush/reed canary grass (creek/river corridors), and wind-farm grassland corridors. Virtually no conifer forest. Agricultural edge and riparian draws provide the highest-quality deer habitat. Crop fields (especially unharvested or waste grain) are key feed sources in fall.

White-tailed deer use the riparian corridors along the Tucannon and tributary draws as travel lanes and bedding cover, moving out into wheat and grain stubble fields to feed at dawn and dusk. Elk are largely agricultural-conflict animals moving between Blue Mountains foothills (adjacent GMUs 149, 154) and lowland grain fields; WDFW manages them primarily to reduce crop damage rather than for trophy hunting. Black bear are present but uncommon, following berry and grain sources. Mule deer are rare to absent — this is firmly whitetail country. Turkey (primarily Rio Grande) use riparian corridors and adjacent agricultural edges.

Elk in GMU 163 are formally managed under a damage-reduction objective — WDFW surveys damage complaints to set opportunity levels. No general modern firearm elk season exists; the only elk opportunity is early archery (spike bull), late archery (antlerless), and a very limited special-permit antlerless firearm hunt (Hunt 2212, ~5 permits). Whitetail deer hunting is the primary draw; the 3-point minimum antler restriction on all deer applies. Hunting pressure drops sharply after the first two days of general season. Access scouting and landowner relationships are the single biggest factor in hunter success. The HuntScore 2021 dataset recorded 652 hunters and 147 harvested animals (22.5% success rate) across all species combined.