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Delineating a Watershed Using SAGA GIS

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Satria Wira Bhakti

Academic year: 2024

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STEP1. Download Data Raster + Data SHP + SAGA 2. Manage File

3. Input data SHP

4. Input data Raster + atur CRS 5. Merge Raster

6. Sesuaikan Coordinate Reference System (CRS)

Peta raster raw langsung di merge -> sesuaikan CRS ke UTM 49S

s

Proses Delineasi dengan SAGA Akses Processing Toolbox 1.

Terrain Analysis -Hydrology >> Fill Sinks (Wang & Liu) 2.

Terrain Analysis - Channels >> Channel network and drainage basins 3.

Threshold 5-> default

Checklist Filled DEM + Save

Checklist Strahler Order Checklist Channels + Save (.SHP)

Tutorial 1

05 June 2024 20:36

Geomatika dan Sistem Informasi Geografis Page 1

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4. Upslope Area Klik bagian koordinat

Arahkan kursor ke tempat titik daerah tangkapan hilir.

Copy koordinat X Y dan pindahkan ke notepad Paste koordinat dari notepad ke upslope area Elevation-> Filled DEM

Metode upslope area -> [0] Deterministic 8 Save

Geomatika dan Sistem Informasi Geografis Page 2

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