topic Re: The difference between dendritic and deranged terrains. in Water Resources Questions

The difference between dendritic and deranged terrains.

Bravery233 — Tue, 15 Jun 2021 01:46:06 GMT

I want to understand the difference between dendritic and deranged terrains.

Re: The difference between dendritic and deranged terrains.

JayantaPoddar — Tue, 15 Jun 2021 05:26:33 GMT

Dendritic Drainage System, has a branching/ tree-like drainage pattern, develop in areas of uniform rock, with little distortion by folding or faulting. The rock (or unconsolidated material) beneath the stream has no particular fabric or structure and can be eroded equally easily in all directions.

Deranged drainage system is an irregular broken drainage system, where there is no coherent pattern to the rivers and lakes. It happens in areas where there has been much geological disruption. Rivers have not had time to adapt to the underlying rock structure, and follow the irregularities of glacial deposits.

Drainage Patterns - WVCA

Drainage system (geomorphology) - Wiki

EDIT: Adding Arc Hydro: Overview of Terrain Preprocessing Workflows , as referred by Dean.

Re: The difference between dendritic and deranged terrains.

DeanDjokic — Tue, 15 Jun 2021 05:22:16 GMT

From the point of view of DEM processing, dendritic terrains do not have sinks/depressions while deranged terrains do. Specifically with Arc Hydro tools, dendritic terrains have only streams (no sinks), deranged terrains have only sinks (no streams), and combined terrains have both. There are different workflows and tools to use for processing these three terrain types. Please review the details in Arc Hydro document "Arc Hydro - Overview of Terrain Preprocessing Workflows".

Re: The difference between dendritic and deranged terrains.

Bravery233 — Wed, 16 Jun 2021 11:59:56 GMT

Thank you very much for your guidance, good luck.

Re: The difference between dendritic and deranged terrains.

Bravery233 — Wed, 16 Jun 2021 12:01:16 GMT

Thank you very much.