Lake Johnston SI51-01 — AUSTopo 1:250,000 Topographic Map (2025)

Salt lakes, mineralised ranges, and immense Great Western Woodlands—mapped across Western Australia’s remote southern Goldfields

Covering Lake Johnston, Lake Hope, the Bremer Range, and surrounding country between the Wheatbelt and the southern Goldfields, this AUSTopo 1:250,000 sheet provides a clear, authoritative overview of an exceptionally remote inland landscape. Expansive salt-lake systems, low greenstone and banded-ironstone ranges, granite outcrops, mallee, and eucalypt woodland form a region of striking contrasts and significant ecological and geological interest.

The map brings together the Lake Johnston mining district, exploration and access tracks, isolated natural features, drainage systems, and the broader road network linking remote operations with regional centres. It is an essential big-area reference for mineral exploration, environmental assessment, emergency planning, land management, and experienced travellers crossing the Great Western Woodlands.

At 1:250,000 scale (1 cm = 2.5 km), this is the largest scale at which published topographic maps cover the entire Australian continent—ideal for regional planning, land management, emergency coordination, and serious remote-area navigation.

Explore adjoining coverage with the official AUSTopo 1:250,000 map index.

🧭 Why this map stands out

• Updated mapping (2025) — aligned to modern Australian datums for confident, current use

• Exceptional geological context — salt lakes, greenstone country, low ranges, and mineral-access corridors shown in one coherent view

• Great Western Woodlands coverage — broad regional perspective across one of southern Australia’s largest substantially intact woodland landscapes

• Professional-grade cartography — suited to exploration teams, environmental specialists, surveyors, emergency services, and land managers

• Dual coordinate systems — supports seamless transition between office planning and field navigation

• Printed in Australia — precision output, locally finished and quality-checked

🗺️ What you’ll see

• Lake Johnston, Lake Hope, and associated salt-lake and drainage systems

• The Bremer Range, low hills, granite outcrops, and broad woodland plains

• Mining areas, exploration routes, access tracks, airstrips, and isolated infrastructure

• Vegetation patterns, reserves, localities, and administrative boundaries

• Contours, spot elevations, and clear grid overlays for accurate positioning and large-area planning

Remote travel note: This is isolated country with limited services, unreliable communications, and numerous mining, private, or restricted-access tracks. Confirm permissions, current road conditions, fire and weather risks, fuel range, water, communications, and emergency arrangements before departure.

📐 Map details at a glance

• Scale: 1:250,000

• Series: AUSTopo — Australian Digital Topographic Map Series

• Coverage: Lake Johnston SI51-01

• Map currency: 2025

• Coordinates: Geographical & MGA

• Datum: GDA2020, AHD

• Projection: Universal Transverse Mercator (UTM)

• Sheet size: 800 mm (W) × 500 mm (H)

💧 Field-Ready Options for Rugged Use

Choose the format that best suits your intended use—from lightweight trip planning to demanding all-weather fieldwork.

✅ Standard Paper

• Printed on 100 gsm FSC® coated paper

• Produces crisp, clear text and finely defined map symbols

• Lightweight and convenient for general reference or protected field use

• An economical choice for trip planning, research and office applications

✅ Waterproof and Tearproof Tyvek®

• Made from genuine DuPont™ Tyvek®, an advanced synthetic material composed of pure polyethylene fibres

• Waterproof, tear-resistant, foldable and extremely lightweight

• Printed using HP pigment-based inks for a permanent waterproof finish

• Suitable for backpacks, vehicles and exposed field conditions

• Ideal for bushwalkers, emergency personnel and outdoor professionals

• Provides exceptional durability without the weight and bulk of lamination

✅ Laminated

• Fully encapsulated between two 80-micron gloss laminate sheets

• Highly resistant to water, stains, smudges and tearing

• Draw on the surface with whiteboard markers for route planning or instruction

• Use Mark-It-Dots to identify campsites, hazards, access points or other locations without marking the map permanently

• Wipeable and reusable

• Ideal for offices, classrooms, operations centres and repeated field reference

🎯 Who it’s for

• Mining, mineral-exploration, geology, and field-support teams

• Environmental, conservation, and land-management professionals

• Surveyors, engineers, infrastructure planners, and contractors

• Emergency services and remote-area coordinators

• Researchers, educators, and Great Western Woodlands specialists

• Experienced four-wheel-drive travellers and expedition planners

🇦🇺 Our commitment

Every AUSTopo map we supply is printed and finished in Australia, colour-managed for accuracy, hand-checked, and packed with care—so it arrives ready for real-world use.

Plan, brief, and work across the Lake Johnston region with confidence. Choose your finish and add this essential 2025 AUSTopo map to your kit today.