Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [stream-order]

A method of classifying the relationship between segments of flowing water bodies.

2
votes
1answer
120 views

Simplifying stream network based on grid using QGIS?

I have a river network (blue line in the below image) and I need to simplify this based on a grid. I basically need to snap the river to the closest vertex or middle-of-side of the grid cell's bounds (...
0
votes
0answers
40 views

Getting higher stream number for lower order stream in ArcGIS Desktop?

The fourth order stream is showing greater stream number then third order stream?
0
votes
0answers
30 views

using con tool for Hydrological analysis using ArcGIS

when I use the tool con with VALUE > 500 the stream order of the basin is 4th order,and I have already done the morphometric analysis using these data, but when using VALUE > 100 the order changes ...
0
votes
0answers
37 views

r.stream.order creating broken streamlines

I used r.stream.order in GRASS GIS but the streamlines are broken. Hence, a continuous stream with order 5 is broken and after the apparent break the stream order shows lower order 1 or 2. How do I ...
1
vote
0answers
140 views

How to use GRASS command “r.stream.distance” in Qgis 2.16.2?

I like to figure out the distance from each cell to the outlet along the flow path. Maybe you can suggest some other opportunities/commands to solve my problem. It would be nice, if someone can help ...
0
votes
1answer
112 views

Find the nearest point on a stream network from a given point?

I have a vector layer for stream network created by r.stream.extract and then vectorized stream file using r.to.vect of grass algorithm in qgis. I want to find nearest point for a given point on ...
2
votes
1answer
386 views

How to know stream order in QGIS on output of r.stream.extract

I have stream order created over DEM using r.stream.extract , which gives 3 output files: stream_raster - raster map stores extracted streams. stream_vector - extracted points for each stream ...
1
vote
1answer
127 views

Dissolve Lines without Dissolving Convergent Lines?

I've been playing with arcHydro and related processes a bit and have run into an obstacle. I have been creating stream networks from the flow accumulation, direction, and stream order functions. When ...
3
votes
1answer
714 views

QGIS: Saga Channel network: how to prepare SRTM data

I am trying to use the Saga toolbox (2.2.3) in QGIS (2.18) to create a channel network from SRTM data using this tutorial 1. It works, but the result I get when using the DEM that comes with the ...
0
votes
1answer
76 views

Flow direction without DEM / raster

I am trying to figure out flow direction for a stream network and I do not have a high resolution DEM data for the same. I only have information about the stream orders and the network itself. Is ...
1
vote
1answer
1k views

Making River/water map with stream order in QGIS?

I'm a complete novice. I am using QGIS but am open to trying anything else. I am trying to make a map like the example at http://www.hydrosheds.org/. HydroSHEDS provides void filled elevation, ...
10
votes
1answer
406 views

what is the stream order coming to next given map

I am following Strahler's method for stream ordering. Is the green colored stream 4th order, according to this method?
2
votes
1answer
143 views

Connectivity of Streams

I have a line vector layer containing streams (see image below). What is the easiest approach to determine the connectivity of each stream segment (eg. sum of upstream nodes)?
1
vote
0answers
113 views

Automatically selecting main rivers of very branched river network using Arc Hydro? [closed]

I'm using ArcGIS 10.1 for Desktop and Arc Hydro. Is there any way to automatically select the main rivers of a very branched river network?
1
vote
0answers
702 views

How can we extract the stream order branch?

Actually I am new to GIS, so I don't know much about technical terminology. I have extracted a river network but now have a problem in distinguishing the branch order of stream (from order 1 to 2, 2 ...
1
vote
1answer
1k views

Automatically generating pour points along stream network?

The following screenshot shows the results of a water flow analysis where I identified stream order via the Strahler method in ArcGIS. Now I need to generate watersheds for 2nd order streams and ...
1
vote
1answer
147 views

Shreve Stream Order - labels

I am working on Shreve stream order. I made raster where is basin with rivers. I created Shreve stream order but problem is that I should put labels to map, but I don't know how (only putting text ...
0
votes
1answer
235 views

How to join multiple lines (branches of a large stream network)

I've generated a channel/stream network based on a DEM, but each branch of the network is split into very small lines. I'd like to have the network divided into as few separate lines as possible, so ...
0
votes
1answer
3k views

Creating Stream Order [closed]

I'm new user of this software, please can somebody guide me, how to calculate stream order in QGIS or GRASS GIS, step by step.... mean commands and how to calculate watershed in this.
4
votes
1answer
802 views

Horton Stream Ordering in ArcGIS?

Is there a way to order streams using the Horton (opposed to Horton-Strahler) method in ArcGIS (10.2.2)? I know the Stream Order tool allows you to use Strahler and Shreve.
1
vote
2answers
389 views

Creating Stream Order with using thresholding

While creating stream network, I implement a thresholding. All cells's value is "1". Later, while creating stream segments, Do I use the second thresholding for separating link to segments ?
2
votes
1answer
172 views

Creating Stream Order

All of cell's values are "1" into stream network. Later, stream link seperates the segments using stream order tool. And, each stream segment has different grid codes. How do Stream Order discriminate ...
4
votes
2answers
1k views

Stream Segmentation in ArcGIS

When I create a stream segmentation using Archydro,“Fdr” and “Str” are the inputs for the Flow Direction Grid and the Stream Grid respectively. The output is the Link Grid. How is defined considering ...
3
votes
2answers
3k views

Create stream network using ArcGIS

When I create stream network in ArcGIS, for example, if there is a cell of more than 100 flowing into that, it assumes stream. Does ArcGIS decide to cells more than 100 or 80? If I decide, what are ...
1
vote
1answer
2k views

How to derive stream order from vector network [duplicate]

I have a recently-updated extract from NHD High Resolution (updated in last 6 months) which means it hasn't been cranked through NHDPlus, and won't for many years to come, and thus has no Stream Order ...
0
votes
1answer
196 views

How are minor tributaries determined?

What are the criteria to determine if river A is a major or minor tributary to another River B? Is stream order the only deciding factor i.e. the highest order is the main stem, one less order is a ...
4
votes
2answers
1k views

Installing NVS Vector Stream Tool with ArcGIS Desktop version later than 10.0?

I can't seem to get a response form NVS about their Vector Stream Tool add-on, but they did send me a fixed-up version that I have now been able to install. However, I cannot find any associated ...
4
votes
2answers
7k views

Finding Stream Order from DEM using ArcGIS Desktop?

I have DEM Data for the study area, I want to know how to find out the stream order using DEM. I saw Stream order tool in Hydrology toolset in ArcGIS. in Stream order tool what is input stream raster ...
9
votes
2answers
6k views

How to calculate stream order for vector data without a DEM? [closed]

I have a shapefile which contains the streams that were digitized from a satellite Image. I would like to calculate the stream order for this data. The data does not exactly match the DEM that I have, ...