Unit X9a Zone X9a
California's premier limited-draw mule deer zone — the migratory Round Valley herd on the Sierra's eastern front
Eastern Sierra X-zones — Mammoth, Long Valley & Mono Basin · Last reviewed 2026-07-12
Area
1,950
sq mi
Public land
75%
approx.
Elevation
5,000–11,000
feet
Motorized
moderate
access
Overview
Zone X-9a is the crown jewel of California's premium X-zone draws, spanning the eastern escarpment of the Sierra Nevada from Bishop north through Long Valley, Mammoth Lakes, the June Lake Loop, and the Mono Basin, reaching into portions of Fresno, Inyo, Madera, and Mono counties. It holds the migratory Round Valley (south) and Casa Diablo (north) deer herds of Inyo mule deer, which summer high along the Sierra crest and pour down traditional migration corridors with the first hard fall storms. The zone is majority public — Inyo National Forest, BLM, and LADWP land — and posts by far the highest deer success of the X-9 complex (roughly 56%), making the tag one of the toughest draws in the state.
Terrain
Big-country eastern Sierra: flat sage valleys and pumice benches at the base of the escarpment rising to very steep, rocky, glacier-carved granite high country. Weather swings hard — warm days and freezing nights early, snow developing at elevation later in the season.
Cover: Great Basin sagebrush and bitterbrush scrub on the valley floors and benches, grading up through pinyon-juniper woodland, Jeffrey pine forest, montane chaparral, montane riparian, and subalpine conifer near timberline.
Landmarks: Eastern Sierra escarpment · Rock Creek drainage · Mammoth Mountain & the Mammoth Lakes Basin · Long Valley & Crowley Lake · Owens River · Glass Mountains · June Lake Loop (June, Gull, Silver, Grant Lakes) · Mono Basin & Mono Lake · Conway Summit
Access
Majority public land with generally excellent access, but scattered private parcels cluster around Long Valley, Crowley Lake, Mammoth Lakes, and June Lake — written permission is required and enforced. Terrain east of US-395 is far more vehicle-accessible than the steep Sierra front to the west, where access is largely limited to improved roads up the major drainages (Convict, McGee, Rock creeks). Pumice soils are soft and fragile; OHV travel is restricted to designated roads. Overnight camping is not allowed on LADWP land.
Managers: Inyo National Forest (USFS), Bureau of Land Management (BLM), Los Angeles Department of Water & Power (LADWP), Private (Long Valley, Crowley Lake, Mammoth Lakes & June Lake areas)
Access points: US Highway 395 (primary corridor, Bishop to Lee Vining) · US-6, State Routes 203, 120, 158, 167 · Rock Creek, McGee Creek & Convict Creek roads (Sierra front) · Inyo NF & BLM dirt-road networks off 395
Species notes
Mule Deer
common qualityThe migratory Round Valley and Casa Diablo herds of Inyo mule deer are the marquee draw and the reason X-9a is one of California's hardest tags to pull. Deer summer at 7,500-11,000 ft along the Sierra crest and migrate down to winter range in southeastern Mono County and into Mineral County, Nevada, with fall movement triggered by snow and freezing temperatures.
- →Hunt the weather — the first hard fall snowstorm collapses deer off the summer range onto traditional migration routes, often in just a few days
- →Glass sage/bitterbrush transition benches and the mouths of major drainages where migrating deer stage
- →Work the pinyon-juniper and montane chaparral edges on the summer range early in the season before the push
- →Cover ground with optics across the open eastern country rather than grinding the steep granite to the west
Black Bear
common opportunityBlack bears are well established in the timbered Sierra drainages and riparian bottoms of the Inyo NF, a solid secondary opportunity while chasing deer.
- →Glass timbered slopes, aspen pockets, and creek bottoms at first and last light
- →Check bitterbrush and berry benches in the higher forest
- →Work the montane riparian corridors along the major creeks
Pro tips
- →Hunt the storms — the single biggest driver of deer movement here is the first heavy fall snow at elevation
- →Learn the traditional migration routes off the summer range; they follow drainages and the base of the escarpment
- →Focus on sage/bitterbrush transition zones between summer and winter range as the push develops
- →Stay east of 395 for glassing-friendly, vehicle-accessible country; the Sierra front is steep and road-limited
- →Verify private boundaries around Long Valley, Crowley Lake, Mammoth, and June Lake before hunting
Watch out for
- !Private parcels scattered through the valley towns (Long Valley, Crowley, Mammoth, June Lake) — get written permission
- !No overnight camping on LADWP land
- !Soft pumice soils and designated-road-only OHV restrictions
- !Severe weather and early snow at elevation; unimproved roads turn bad fast
- !Long distances between fuel and water — be self-sufficient
- !Fire-season closures and restrictions
Logistics
Bishop is the main supply hub, with services strung along US-395 at Toms Place, Mammoth Lakes, June Lake, and Lee Vining. This is big, remote mileage — enter the field with full fuel tanks and carry snow chains, a shovel, a good spare, and extra food and water. Four-wheel drive is advised on unimproved roads, and higher campgrounds may close before the season. Cell service drops off quickly away from the highway.
Nearest towns: Bishop, Mammoth Lakes, Toms Place, June Lake, Lee Vining, Crowley Lake
Seasons & regulations
This page carries no season dates or regulations. Get current rules from the official California sources:
Research sources: CDFW Zone X-9a & Area-Specific Archery A-16 General Deer Hunting Information (Wildlife Branch, 2025) · CDFW Deer Hunting · GoHunt — California Deer Zone X-9a Unit Profile
FAQ
- How big is Unit X9a in California?
- Unit X9a (Zone X9a) covers about 1,950 square miles, ranging from roughly 5,000 to 11,000 feet in elevation. Area is computed from the unit boundary polygon.
- How much public land is in Unit X9a?
- Approximately 75% of the unit is public land. Primary managers: Inyo National Forest (USFS), Bureau of Land Management (BLM), Los Angeles Department of Water & Power (LADWP), Private (Long Valley, Crowley Lake, Mammoth Lakes & June Lake areas). Always verify ownership boundaries on the ground.
- What species does the catalog list for Unit X9a?
- Mule Deer, Black Bear. For seasons, tags, and regulations, use the official California agency resources linked on this page — this page carries no regulatory information.
Put Unit X9a on your map.
Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.