Geo-Spatial Engineering | DEMO for WALCHA Council GIS

☷ Contents Map layers

BASEMAP Satellite imagery Street map Topographic

TRANSPORT & CADASTRE

UTILITY ASSETS Concept

ENVIRONMENT & OPEN SPACE

OSM coverage may be incomplete. Load verified park or water GeoJSON if needed.

CLIMATE, TERRAIN & FOREST HEALTH

Weather: 25 Open-Meteo model samples interpolated across the 3 km radius, locally stretched colours. Terrain: real SRTM 30 m elevation samples (Open Topo Data), interpolated across the same 3 km study circle. Uniform rain is retained when the model reports uniform rainfall.

Not loaded

NDVI is a continuous raster product. Use a published NDVI service clipped to the Walcha 3 km radius, or import NDVI polygons (automatically clipped to the study area). No synthetic NDVI is generated.

Awaiting NDVI layer

🌳 CANOPY HEIGHT

1 m canopy height · GEE asset. Import a classified GeoJSON exported using the included GEE script; no fabricated tree heights.

Awaiting GEE export (not yet loaded)

🌊 1% AEP (100-YEAR) FLOOD DEPTH

Connect a Walcha-specific published flood-depth service. No modelled depths are assumed without an official source.

Awaiting verified Walcha flood-depth service

Walcha Flood Study ↗

OTHER FLOOD INFORMATION

Connect an official flood map service URL to display published flood information. No hazard area is inferred from the satellite image.

Not connected

Parks and surface-water features are requested from OpenStreetMap; availability depends on the public endpoint. Land-cover candidates are not proof of public park ownership.

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Layer condition overview

Selected layerClassification

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Condition distribution

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Selected feature details

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Data provenance

Roads: NSW Spatial Services, RoadCentreline (live service)

Lots: NSW Spatial Services, Lot (live service)

Imagery: Esri satellite basemap (online)

Utilities: synthetic roadside-offset illustration

Parks: OpenStreetMap public park/recreation tags, where available; not ownership-verified

Surface water: OpenStreetMap water polygons, where available

Flood: official service supplied by user; no invented flood extents

Tree height: not included until canopy-height raster is obtained and processed