Flow accumulation
tr_flow_accumulation
What it does
Depression-filled D8 flow direction and accumulation, with an optional stream network (Strahler order).
Like Fill + Flow Direction + Flow Accumulation (Spatial Analyst) in ArcGIS Pro and GRASS r.watershed / SAGA Fill Sinks + Flow Accumulation in QGIS. Run by the product's terrain engine on 30 m cells from Copernicus DEM GLO-30 (full resolution): 740 x 930 = 688,200 cells; no model was called.
Flow accumulation and streams
Flow accumulation (pure): the largest catchment drains 138.166 km2 through one cell; 274 stream link(s), Strahler order up to 4.
Parameters
| Parameter | Value |
|---|---|
| cell_size_m | 30 |
| stream_threshold_cells | 1,111 |
Numbers
| Measure | Value |
|---|---|
| backend | pure |
| max_accumulation | 1.535e+05 |
| outlets | 202 |
| streams | 274 |
| max_order | 4 |
| dem.rows | 740 |
| dem.cols | 930 |
| dem.cell_m | 30 |
| dem.crs | EPSG:32737 |
| dem.missing_frac | 0 |
| dem.elev_min_m | 1,562 |
| dem.elev_max_m | 2,456 |
| dem.elev_mean_m | 1,824 |
| dem.relief_m | 894.3 |
| dem_source.kind | copernicus |
| dem_source.native_res_m | 30.91 |
| dem_source.crs | EPSG:4326 |
| dem_source.dataset | Copernicus DEM GLO-30 |
Notes
- DEM: Copernicus DEM GLO-30 (open data; cached). Copernicus DEM GLO-30: produced using Copernicus WorldDEM-30 (c) DLR e.V. 2010-2014 and (c) Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA
- the grid (30 m) is finer than the DEM (30.9 m): values between DEM samples are interpolated
